Varistors (ZNR Surge Absorber)
SMD type
HF series
Features
● Meet for load dump surge test (JASO D 001-94) [Vp=70 V，τ=200 ms，Ri=0.8 Ω]
● Meet for load dump surge test ISO7637-2 and ISO16750-2
● Suitable for requirements of automotive
● Compact size SMD
● Meet flow/reflow/iron soldering
● Strong against “Soldering heat shock” due to molded construction
● AEC-Q200 compliant
● RoHS compliant
Recommended applications
● Protection of body & accessory ECU about DC12 V automotive against load dump surge
■ As for handling precautions and minimum quantity / Packing unit please see related information.
Explanation of part numbers
T ERJS02 ～ ERJS1Tシリーズ
1
2
3
4
5
6
7
8
9
10
11
E
R
Z
H
F
2
M
2
2
0
F
Product code
Construction
Series
12
Design No.
Nominal
Varistor voltage
Embossed taping
Construction
①
②
ZnO, others
① Multilayer varistor
Epoxy (UL94 V-0 approved)
② Mold resin
③ Lead terminal
ERZHF2M220F
: Sn plated Cu alloy
ERZHF2M220D / ERZHF2M270
: Sn plated Ni-Fe alloy
③
Dimensions in mm (not to scale)
Unit : mm
H
Part No.
S
S
L
E
W
Dimensions
W
L
6.4±0.4
8.0±0.5
ERZHF2M220F
ERZHF2M220D
ERZHF2M270
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
H
5.5±0.5
S
E
1.3±0.3
2.5±0.2
4.5±0.5
20-Jan-23
SMD type / HF series
Ratings and characteristics
● Operating temperature range
● Storage temperature range
Part No.
ERZHF2M220F
ERZHF2M220D
ERZHF2M270
: ERZHF2M220F -55 to 150 ℃, ERZHF2M220D/ERZHF2M270 -40 to 125 ℃
: ERZHF2M220F -55 to 150 ℃, ERZHF2M220D/ERZHF2M270 -40 to 125 ℃
Varistor
voltage
at 1 mA
Maximum
allowable
voltage
Short time
over-voltage
Clamping
voltage
(V)
DC (V)
DC (V)
(V)at Ip 5(A)
20 to 23.2
27±20 %
JASO
Category:A, A-1
70 V, 1 time
35 max.
24
5 min.
16
Load dump surge
energy ISO7637-2
TEST A
Load dump
surge
43 max.
(J)
50 max. 10 times
ー
Marking contents
ZNR Surge Absorbers
HF220F (ERZHF2M220F), HF220 (ERZHF2M220D), HF270 (ERZHF2M270)
① Product name
② Abbreviation of P/N
ZNR
②H F 2 2 0 F
③ ◆◇●〇■
①
③ Date code
◆
Yearly
◇
Monthly
●
Daily
〇
■
Suffix-1
Suffix-2
2010:0, 2021:1,・・・, 2019:9, 2020:A, 2021:B,・・・,
2027:H, 2028:J,・・・, 2032:N, 2033:P, 2034:R,・・・, 2039:W (30 year cycle)
Jan.: 1, Feb.: 2, ・・・, Aug.: 8, Sep.: 9, Oct.: O, Nov.: N, Dec.: D
1st to 9th: 1 to 9, 10th: A, 11th: B, ・・・, 17th: H, 18th: J, ・・・,
22nd: N, 23rd: P, 24th: R, ・・・, 30th: X, 31st: Y
A single digit of alphanumeric
A single digit of alphanumeric
Minimum quantity
● Packing quantity
Product
Series / Type
“ZNR”
Transient/surge
absorbers
SMD
type
Part number
Minimum quantity
/ Packing unit
Packing quantity
in carton
800
3200
1000
4000
ERZHF2M220F
ERZHF2M220D
ERZHF2M270
Embossed
(HF)
※ Part No., quantity and country of origin are designated on outer packages in English.
Carton (about)
L×W×H (mm)
340×345×105
※ Please contact local sales office about packing specifications.
● Embossed taping
Chip pocket
Feeding hole
Width of tape :16 mm
øD0
P2
W
B
F
P0
E
t1
P1
A
t2
Chip component
Direction of feed
Unit : mm
A
B
Ｗ
F
E
P1
P2
P0
7.5 max.
11.9 max.
16.0±0.3
7.5±0.1
1.75±0.10
12.0±0.1
2.0±0.1
4.0±0.1
Part No.
ERZHF2M220F
ERZHF2M220D
øD0
1.5+0.1/0
t1
t2
0.8 max.
ERZHF2M270
9.0 max.
8.0 max.
● Reel
T
r
C
B
E
øD
Unit : mm
Part No.
A
t
W
ERZHF2M
A
B
C
øD
382 max.
50 min.
13.0±0.5
21.0±0.8
W
T
t
r
16.4+2.0/0
22.4 max.
2.5±0.5
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
E
2.0±0.5
1.0
20-Jan-23
SMD type / HF series
Performance characteristics
Characteristics
Test methods
Specifications
Environmental conditions under which every measuring is done without doubt on the
Standard test condition measuring results. Unless specially, specified, temperature, relative humidity are 5 °
C to 35 °C, 45 to 85% RH respectively.
Maximum allowable
voltage
-
The maximum DC voltage that can be applied continuously in the specified
environmental temperature range.
Short time over-voltage The maximum DC Voltage that can be applied specified period without breakdown.
Varistor voltage
Clamping voltage
Voltage between both terminals of ZNR measured when 1 mA of DC current is
applied under standard conditions. It is called V1. Measuring the varistor voltage
should be made promptly to avoid heat affection.
To meet the
specified value
The maximum voltage between two terminals with the specified impulse current (8/20
μs).
The test waveform of transient voltage which specified JASO Category
A A-1 70 V without breakdown.
Load dump surge
Vp=70 V
No breakdown
36.8 %
PS Voltage
0V
τ=200 ms
Surge energy which can be applied at 10 times on the condition of
ISO16750-2 TEST A.
td
US
Load dump surge
energy
No breakdown
UA
PS Voltage
0.1(US-UA)
0V
※ Please Check Specification of the products about Mechanical & Environmental etc. requirements.
Recommendation land size
Land
8.0
6.4
3.0
Product
Occupied Space
5.0
10.0
Unit : mm
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
20-Jan-23
Safety and Legal Matters to Be Observed
Safety and Legal Matters to Be Observed
Product specifications and applications
■ Please be advised that this product and product specifications are subject to change without notice for
improvement purposes. Therefore, please request and confirm the latest delivery specifications that explain
the specifications in detail before the final design, or purchase or use of the product, regardless of the
application. In addition, do not use this product in any way that deviates from the contents of the company's
delivery specifications.
■ Unless otherwise specified in this catalog or the product specifications, this product is intended for use in
general electronic equipment (AV products, home appliances, commercial equipment, office equipment,
information and communication equipment, etc.).
When this product is used for the following special cases, the specification document suited to each application
shall be signed/sealed (with Panasonic Industry and the user) in advance..These include applications requiring
special quality and reliability, wherein their failures or malfunctions may directly threaten human life or cause harm
to the human body (e.g.: space/aircraft equipment, transportation/traffic equipment, combustion equipment,
medical equipment, disaster prevention/crime prevention equipment, safety equipment, etc.).
Safety design and product evaluation
■ Please ensure safety through protection circuits, redundant circuits, etc., in the customer's system design so
that a defect in our company's product will not endanger human life or cause other serious damage.
■ This catalog shows the quality and performance of individual parts. The durability of parts varies depending on
the usage environment and conditions. Therefore, please ensure to evaluate and confirm the state of each part
after it has been mounted in your product in the actual operating environment before use.
If you have any doubts about the safety of this product, then please notify us immediately, and be sure to conduct
a technical review including the above protection circuits and redundant circuits at your company.
Laws / Regulations / Intellectual property
■ The transportation of dangerous goods as designated by UN numbers, UN classifications, etc., does not apply
to this product. In addition, when exporting products, product specifications, and technical information described
in this catalog, please comply with the laws and regulations of the countries to which the products are exported,
especially those concerning security export control.
■ Each model of this product complies with the RoHS Directive (Restriction of the use of hazardous substances in
electrical and electronic equipment) (2011/65/EU and (EU) 2015/863). The date of compliance with the RoHS
Directive and REACH Regulation varies depending on the product model.
Further, if you are using product models in stock and are not sure whether or not they comply with the RoHS
Directive or REACH Regulation, please contact us by selecting "Sales Inquiry" from the inquiry form.
■ During the manufacturing process of this product and any of its components and materials to be used,
Panasonic Industry does not intentionally use ozone-depleting substances stipulated in the Montreal Protocol
and specific bromine-based flame retardants such as PBBs (Poly-Brominated Biphenyls) / PBDEs
(Poly-Brominated Diphenyl Ethers). In addition, the materials used in this product are all listed as existing
chemical substances based on the Act on the Regulation of Manufacture and Evaluation of Chemical Substances.
■ With regard to the disposal of this product, please confirm the disposal method in each country and region
where it is incorporated into your company's product and used.
■ The technical information contained in this catalog is intended to show only typical operation and application
circuit examples of this product. This catalog does not guarantee that such information does not infringe upon
the intellectual property rights of Panasonic Industry or any third party, nor imply that the license of such rights
has been granted.
■ Design, materials, or process related to technical owned by Panasonic Industry are subject to change without
notice.
Panasonic Industry will assume no liability whatsoever if the use of our company's
products deviates from the contents of this catalog or does not comply with the
precautions. Please be advised of these restrictions.
10-May-24
Matters to Be Observed When Using This Product
Matters to Be Observed When Using This Product
(D-type : V series / SMD-type : HF・VF series)
Safety measures
An abnormal state for varistors (ZNR surge absorbers) of the D type/V series and SMD-Type/HF, VF Series (hereinafter
the product or "the surge absorber") that results from a problem with service conditions (materials used, the surrounding
environment, power conditions, circuit conditions, etc.) may cause a fire accident, electric shock accident, burn accident,
or product failure. Matters to note when handling this product will hereinafter be described. What is described below should
be checked sufficiently before the product is used.
■ Confirming rated capabilities
Use the surge absorber within the range of its rated capabilities. Each type of surge absorber has specified rated
capabilities including a maximum allowable circuit voltage, a surge current tolerance, an energy tolerance, an impulse
lifespan (surge lifespan), average pulse power, and a service temperature. Using the surge absorber under severe
service conditions that are beyond the rated capabilities causes degraded performance of the surge absorber or
destruction of a circuit element, which may lead to smoke generation, ignition, etc.
■ Take the following measures in order to avoid an accident caused by expected phenomenon.
(1) Destruction of the surge absorber may scatter its fractured pieces around. To protect other elements from these
pieces, set product in a case or shield it with a cover.
(2) Do not place the surge absorber near combustible materials (vinyl cable, resin mold, etc.). If avoiding the vicinity
of combustible materials is difficult, protect the combustible material with an incombustible cover.
(3) Surge absorber placed between lines
When the surge absorber is placed between lines, connect a normal type current fuse in series with the surge
absorber.
* See "Current fuse" in the "Circuit design and circuit board design" section.
(4) Surge absorber placed between a line and the ground
① When the surge absorber is placed between a line and the ground, even if the surge absorber short-circuits,
ground resistance will remain in the section between the line and the ground, leaving a possibility that the
current fuse won’t blow, in which case the outer sheath resin of the surge absorber may generate smoke or
ignite due to current flow. To prevent such a case, place an earth leakage breaker in a location closer to the
power supply than the surge absorber. When not using an earth leakage breaker, use a current fuse and
temperature fuse in series with each other.
* See Table 1 in the "Circuit design and circuit board design" section.
② When the surge absorber is placed between a live part and a metal case, it may cause electric shock if the
surge absorber short-circuits. To avoid this, ground the metal case or shield it to prevent direct contact with the
metal case.
■ In case the surge absorber should short-circuit and generate smoke or ignite, immediately cut off current flow
to the surge absorber.
■ Rated voltage for UL certification, etc.
To allow the surge absorber to meet leak current requirements, etc., a maximum allowable circuit voltage and rated
voltage are specified for the surge absorber.
When applying for UL certification, etc. of a device equipped with a surge absorber, ensure the working voltage of the
device does not exceed the rated voltage of the surge absorber.
■ An unexpected sharp rise in the working voltage, an incoming excessive surge, etc., may cause the surge absorber to
generate smoke or ignite.
In such a case, fire spreading through the device should be prevented to avoid expanded damage. To achieve this,
take a multi-protection measure, such as adopting fire-resistant materials that make up the outer shell components
and structural materials.
30-Jun-23
Matters to Be Observed When Using This Product
Use environments and cleaning conditions
■ Do not use the surge absorber in an outdoor environment where the surge absorber is exposed to sunlight.
■ Do not use the surge absorber in which direct sunlight hits the surge absorber or near a heating element where the
temperature of the surge absorber would rise above its working temperature.
■ Do not use the surge absorber in a place where the surge absorber is exposed to wind or rain or a highly humid place
where steam is emitted or dew concentrates.
■ Do not use the surge absorber in a place filled with dust or salt, in an atmosphere contaminated with a corrosive gas,
etc., or in liquids such as water, oil, chemical, or organic solvents.
■ Do not wash the surge absorber with a solvent (thinner, acetone, etc.) that damages the outer sheath resin.
Response to anomalies and handling conditions
Be careful not to drop the surge absorber on the floor, etc. The product is likely to suffer mechanical or electrical damage
when dropped on the floor. Avoid using such a product.
Reliability
A capacitor conforming to "AEC-Q200" refers to a capacitor having passed some or all of evaluation test items defined
in AEC-Q200.
To know the detailed specifications of each capacitor or specific evaluation test scores, please contact us.
We issue a delivery specification sheet for each product ordered. Please confirm the delivery specification sheet when
you place an order with us.
Circuit design and circuit board design
Meet the following requirements. Not following the requirements can result in a shorter lifespan of the surge absorber or its
failure.
■ Choose a surge absorber whose maximum allowable circuit voltage has a margin relative to the maximum voltage range
including source voltage fluctuations.
* See Table 1 in the "Circuit design and circuit board design" section.
■ When surges are applied intermittently to the surge absorber at short intervals (when pulses of voltages are applied in a
noise simulator test, etc.), make sure that the surge power does not exceed the maximum average pulse power of the surge
absorber.
■ The product numbers of recommended surge absorbers to choose are shown in Table 1.
(1) The case of placing the surge absorber between lines
When the source voltage is expected to rise temporarily due to unbalanced single-wire loads in a three-phase three-wire
connection configuration, a short circuit between a voltage line and a neutral line, loss of the neutral line, or resonance of
a capacitive load caused by switching on/off, use a surge absorber (varistor) indicated by "*" in Table 1.
(2) The case of placing the surge absorber between a line and the ground
Line-to-ground voltage may rise with a single-wire ground fault, etc. Use a recommended surge absorber in Table 1 that
is different from the surge absorber placed between lines. When the device is subjected to an insulation resistance test
(500 V DC), use a D-type surge absorber indicated by "**" in Table 1.
According to "Electrical Appliance Technical Standards" based on the Electrical Appliance and Material Safety Act, when
using a varistor voltage which would fail the insulation performance test, the surge absorber may be removed from the
device when being subjected to the test, depending on circuit test conditions.
* See attached table 4, appendix 4, "Electrical Appliance Technical Standards" based on the Electrical Appliance and
Material Safety Act.
When conducting a withstand voltage test (1000 V AC or 1200 V AC) of the device, use the recommended D type /
V series surge absorber indicated by "***" in Table 1.
30-Jun-23
Matters to Be Observed When Using This Product
■ Current fuse
(1) Select a surge absorber and the rated current for a current fuse to be used in a manner shown in the following table.
Confirm that no secondary accident arises when the surge absorber in an actual circuit breaks. Selected rated currents
of current fuses shown in the following table are exemplary one and may vary depending on circuit conditions used.
Confirm the rated current by a test, etc., before using the current fuse.
Standard
product number
Rating
current
ERZV05D□□□ ERZV07D□□□ ERZV09D□□□ ERZV10D□□□ ERZV14D□□□ ERZV20D□□□
3 A max.
5 A max.
7 A max.
7 A max.
10 A max.
10 A max.
* Use the rated voltage of the current fuse that corresponds to the circuit voltage of a circuit including the current fuse.
Standard
product number
ERZVF□M□□□
Rating current
5 A max.
* Use the rated voltage of the current fuse that corresponds to the circuit voltage of a circuit including the current fuse.
* For the HF series surge absorber, select the rated current of the fuse after confirming the way the fuse handles a load dump
surge and the protective coordination action it makes when the surge absorber is destroyed.
(2) Recommended parts where fuses are connected are shown in Table 1. When a load current to a protected device is so
large as to exceed the rated current of the fuse, however, connect the fuse in a location shown in the following diagram.
Power supply
Current fuse
ZNR
Protected
device
■ Temperature fuse
When connecting the surge absorber to a temperature fuse, choose a connection method and a temperature fuse that allow
fine thermal coupling between the surge absorber and the temperature fuse.
30-Jun-23
Matters to Be Observed When Using This Product
Table 1 Application example of the product (ordinary application example)
Surge absorber placed between lines
Surge absorber placed between a line and the ground
DC
Single-phase AC
L
Current fuse
DC
Single-phase AC
Protected
device
Connection
N
Current fuse
L
ZNR1
ZNR1
Protected
device
N
ZNR2
Temperature fuse
Thermal coupling
Three-phase AC
Three-phase AC
Current fuse
Current fuse ZNR3 ZNR3
ZNR3
Protected
device
Protected
device
ZNR3
ZNR4
ZNR3
Varistor voltage selection
ZNR
ZNR 1
ZNR 3
Power supply
voltage
[AC]
Thermal coupling
Nominal varistor voltage
D-type
SMD-type
ZNR
Power supply
voltage
[AC]
Temperature fuse
Nominal varistor voltage
D-type
SMD-type
100 V
201 to 361*
201 to 361*
471
471
120 V
241 to 431*
241 to 431*
511
-
200 V
471 to 621*
471
220 V
471 to 621*
471
240 V
511、 621*
-
380 V
751、 821*
-
100 V
220 V
ZNR 2
ZNR 4
230 V
380 V
621*
-
821 or higher**
-
182***
-
511
-
621*
-
821 or higher**
-
182**
-
112**
-
182***
-
* Choose the element size while taking surge conditions into consideration.
Processing conditions
■ Do not apply vibration, impact (drop impact, etc.), or pressure strong enough to crack the outer sheath resin or absorber
body of the surge absorber.
■ When coating the surge absorber with a resin or embedding it in a resin mold, avoid using a resin that degrades the
surge absorber.
■ Do not bend or apply a force to the lead of a D-type surge absorber close to the outer sheath resin.
30-Jun-23
Matters to Be Observed When Using This Product
Mounting and storage conditions
■ When soldering the surge absorber, follow recommended soldering conditions shown in the following table so that
solder or the insulation material making up the surge absorber is not melted.
■ When making holes for mounting the surge absorber on the board, check the dimensions of the holes on the board,
referencing the central point of the interval between the leads.
Because the overall dimensional tolerance is large, forming the holes with high precision requires careful processing.
D-type
Soldering method
Recommended conditions
Flow soldering
260 ℃, 10 seconds or less
(solder bath immersion method)
Flow soldering
SMD-type
(solder bath immersion method)
Reflow soldering
(controlled atmosphere heating
method)
Mater to note
The D-type surge absorber should not be soldered by reflow
soldering.
A high component mounting density may lead to poor
260 ℃, 10 seconds or less solderability. In such a case, consider vent hole formation.
Refer to the recommended When a land is excessively larger than the terminal surface of
soldering temperature
a component, the component may shift position when solder is
profile.
melted.
Note 1: Soldering the surge absorber under soldering conditions different from the recommended soldering
conditions requires extra checking to ensure it won’t cause any problems.
Additional soldering is allowed only once. It must be done within 5 seconds, with the soldering iron
temperature kept at 400 ℃ or lower.
Note 2: A temperature profile may include a large error, depending on the measurement method used.
Be careful in such cases.
Note 3: Board temperatures vary depending on the sizes of boards and mounting densities. Confirm the
temperature for each type of board.
Heat resistance range of the
product in the reflow soldering
process
Time
Preheating part
Soldering part
Cooling part
Normal temperature
120 seconds or less
to 130 ℃
260 ℃ or less
10 seconds or less
Gradual cooling
(cooling under the normal temperature)
Cooling part
Temperature-rising part (I)
Preheating part
Temperature-rising part (II)
Temperature (°C)
Preheating part
Soldering part
Cooling part
260
Reflow soldering
(controlled atmosphere heating method)
Terminal temperature (°C)
Temperature (°C)
Flow soldering
(solder bath immersion method)
Main heating part
250
240
230
220
210
200
0
10
20
30
40
50
60
Time (s)
Time
Temperature-rising
part I
Normal temperature to
preheating temperature
30 to 60 seconds
Preheating part
150 ℃ to 180 ℃
60 to 120 seconds
Temperature-rising
Preheating temperature to 200 ℃
2 to 6 ℃ per second
part II
Main heating
Refer to the heat resistance range of the product
part
in the reflow soldering process.
Cooling part
200 ℃ to 100 ℃
1 to 4 ℃ per second
* Do not perform reflow soldering more than two times.
■ Mounting the surge absorber (SMD-type)
When mounting the surge absorber on the board, make sure that no excessive impact or load, such as pressure from a
suction nozzle for mounting the absorber, positional shift, or mechanical impact/stress caused by a positioning of the
absorber, is applied to the surge absorber. There are cases where the surge absorber shifts from its intended position
when mounted on the board. In such cases, consider a method of bonding the board and the outer sheath resin together.
■ Do not keep the product in a high-temperature or high-humidity condition. Keep the surge absorber in a room with
a temperature of 40 ℃ or lower and a relative humidity of 75% or lower and use the surge absorber within two years of
storage. Check the solderability of a surge absorber stored for a long period (two years or more) before using the surge
absorber.
■ Keep the surge absorber in a place where no corrosive gas atmosphere (hydrogen sulfide, sulfurous acid, chlorine,
ammonia, etc.) is present.
■ Keep the surge absorber in a place where the surge absorber is protected from direct sunlight, dew concentration, etc.
30-Jun-23
