Discontinued
Voltage Step-up Coils
Chip type
ELT3KN
series
High inductance Voltage Step-up coil chip series for
piezoelectric buzzers and DC/DC circuitry of EL panels
Features
● Small and thin
● High inductance
● RoHS compliant
Recommended applications
● Piezoelectric buzzer, Booster circuit for EL backlight (Watch, Electric thermometer, Portable device)
Standard packing quantity (Minimum quantity/Packing unit)
●1,000 pcs or 5,000 pcs / reel
Explanation of part numbers
1
2
3
4
5
6
7
8
9
10
E
L
T
3
K
N
0
0
4
C
Product code
Outer size
Construction
Design No.
Packaging
Code
Packaging
B
ø 180 Reel
C
ø370 Reel
5.5±0.2
➄
0.8±0.1
1.2±0.1
3.1±0.2
0.85±0.10
0.10±0.05
4.5±0.2
3.3±0.1
2.5±0.1
1.2±0.1
①
②
④
0.8±0.1
H
⑥
0.10±0.05
0.25±0.05
0.18±0.05
1.1±0.2
(3.1)
4.5±0.2
➄
3.1±0.2
1.2±0.1
(3.3)
5.5±0.2
1.4 max.
0.18±0.05
0.6±0.1
3.3±0.1
①
④
④
1.2±0.1
②
1.1±0.2
③
1.1±0.1
(3.3)
D
③
3.3±0.1
①
5.5±0.2
3.3±0.2
0.6±0.1
0.125±0.050
1.4±0.2
③
0.85±0.10
3.3±0.2
1.2±0.1
②
0.18±0.05
3.3±0.1
①
(3.1)
➄
5.5±0.2
B
④
0.85±0.10
1.2±0.1
③
1.65±0.20
(3.1)
➄
④
E
②
2.0±0.2
1.5±0.1
0.18±0.05
③
➄
①
②
②
④
0.6±0.1
1.2±0.1
3.3±0.2
①
3.3±0.1
C
3.3±0.2
0.6±0.1
3.3±0.1
1.2±0.1
A
0.85±0.10
Dimensions in mm (not to scale)
➄
Part Name: ①Core ②Terminal ③Ring ④Coil ⑤Terminal board ⑥Adhesive
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.
12-May-23
Voltage Step-up Coils (Chip type)
Standard parts
Inductance
Part No.
(mH)
ELT3KN004
ELT3KN007
ELT3KN113
ELT3KN126
ELT3KN142
ELT3KN019
ELT3KN109
ELT3KN114
ELT3KN014
ELT3KN018
ELT3KN028
ELT3KN032
ELT3KN101
ELT3KN104
ELT3KN118
ELT3KN121
ELT3KN122
ELT3KN123
ELT3KN124
ELT3KN127
ELT3KN128
ELT3KN129
ELT3KN130
ELT3KN131
ELT3KN020
ELT3KN111
ELT3KN125
ELT3KN041
ELT3KN042
ELT3KN043
ELT3KN139
ELT3KN140
ELT3KN135
ELT3KN136
ELT3KN137
ELT3KN149
ELT3KN151
ELT3KN152
ELT3KN155
ELT3KN162
ELT3KN163
14.00
20.00
1.00
1.50
0.82
14.00
3.80
2.50
30.00
35.00
50.00
25.00
10.00
1.00
2.50
1.00
2.00
1.00
4.00
0.47
0.56
0.68
2.30
2.00
30.00
7.50
4.00
14.00
20.00
12.00
0.68
0.82
1.10
2.00
4.00
0.33
0.56
0.47
1.10
4.00
1.10
DC resistance
Tolerance(%)
(Ω)
125
170
34
49
24
125
115
83
150
235
250
185
285
35
64
22.5
44
25
85
14
15
17
51
44
150
177
85
125
175
117
19
22
32
55
117
11
17
14
38
117
32
±40
±10
±40
±10
±40
±35
±40
±10
±30
±10
±40
±10
Tolerance(%)
DC current
(mA) max.
1.7
1.4
25.0
29.0
30.0
1.7
15.0
15.0
1.9
1.9
1.4
10.0
1.4
30.0
20.0
40.0
20.0
30.0
15.0
50.0
45.0
34.0
23.0
20.0
2.5
10.0
15.0
1.7
1.4
1.7
40.0
30.0
30.0
20.0
15.0
60.0
50.0
50.0
25.0
15.0
30.0
±10
±15
±10
±20
±15
±10
±15
±10
±15
±10
±15
±10
±15
±10
±15
Magnetic
composition
Dimensions
Permalloy ring
A
Brass ring
Permalloy ring
B
Brass ring
Permalloy ring
C
Brass ring
Permalloy ring
D
Brass ring
Permalloy ring
E
Brass ring
H
Ring less
E
Brass ring
“□” shows the packaging specifications.
Applied diagram examples
〈For buzzer〉
VO
+1.5 V
〈For EL DC/DC〉
+3.0 V
V2
V1
VO
Vi
Vi
Vi
Vi
V1
V2
Load
SC
SC
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.
12-May-23
Voltage Step-up Coils (Chip type)
Temperature (°C)
Reflow soldering conditions
T3
T2
T1
t1
t2
0
Time
● Pb free solder recommended temperature profile
Voltage Step-up Coils
Part No.
ELT3KN
Preheat
Soldering
Peak temperature
T1 [℃]
t1 [s]
T2 [℃]
t2 [s]
T3
T3 Limit
150 to 170
60 to 120
230 ℃
30 max.
245 ℃, 10 s
260 ℃, 10 s
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.
Time of reflow
2 times max.
6-Aug-21
Voltage Step-up Coils (Chip type)
Packaging methods (Taping)
● Embossed carrier tape dimensions in mm (not to scale)
t1
Chip pocket
Sprocket hole
B
F
A
W
E
øD0
Chip component
P1
Tape running direction
P2 P3
t2
Unit : mm
Part No.
A
B
W
E
F
P1
P2
P0
øD0
t1
t2
ELT3KN
3.7
6.4
12.0
1.75
5.5
8.0
2.0
4.0
1.5
0.3
2.6
● Reel dimensions in mm (not to scale)
T
E
C
B
Unit : mm
D
W
A
Packaging
A
B
C
D
E
W
t
T
B
180
60
13
21
2
13
1.1
15.2
C
370
60
13
21
2
14
2.0
18.0
t
● Leader Part, Vacant Position
Leader part
200 min.
50 min.
Vacant position
Tape end
50 min.
Vacant position
Standard packing quantity
Packaging
Quantity per reel
B
1,000 pcs
C
5,000 pcs
Kind of taping
B 1,000 pcs. Embossed carrier
Embossed carrier taping
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.
6-Aug-21
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
Voltage Step-up Coils
Application Guidelines
1. Safety precautions
・ Make sure to exchange product specifications before using this product, regardless of the intended use.
The design and specifications in this catalog are subject to change without prior notice.
・ Do not use the products beyond the specifications described in this catalog.
・ This catalog explains the quality and performance of the products as individual components. Before use, check and evaluate
their operations when installed in your products.
・ If a malfunction of this product may result in the loss of human life or other serious damage in transportation equipment
(trains, automobiles, ships, etc.), signaling equipment, medical equipment, aerospace equipment, electric heating equipment, combustion
and gas equipment, rotating equipment, disaster prevention and security equipment, and other equipment, ensure safety by implementing
a fail-safe design with the following system.
✽ Systems equipped with a protection circuit and a protection device.
✽ Systems equipped with a redundant circuit or other system to prevent an unsafe status in the event of a single fault.
2. Precautions for use
2-1. Operation range and environments
① These products are designed and manufactured for general and standard use in general electronic equipment
(e.g. AV equipment, home electric appliances, office equipment, information and communication equipment)
② These products are not designed for the use in the following special conditions. Before using the products,
carefully check the effects on their quality and performance, and determine whether or not they can be used.
・In liquid, such as water, oil, chemicals, or organic solvent
・In direct sunlight, outdoors, or in dust
・In salty air or air with a high concentration of corrosive gas, such as Cl2,H2S,NH3,SO2,or NOx
・In an environment where these products cause dew condensation
2-2. Handling
① Do not bring magnets or magnetized materials close to the product. The influence of their magnetic field can change the
inductance value.
② Do not apply strong mechanical shocks by either dropping or collision with other parts.
Excessive schock can damage the part.
2-3. Resoldering with a soldering iron
① Resoldering should be done within 3 seconds by soldering iron, the temperature with 350 °C or less and should be cooling
down after ward. Both side of terminals shall be fixed closely to PWB. And terminals shall not be pressed in heating.
Don’t Press
② The wiring tab shall not be held by sharp-edged tool.
Wiring Tab
③ Iron shall not be put to the component itself.
2-4. Mounting side
① External force must be less than 4.9N while mounting.
② The wiring tab is expose the terminal, so please be careful when you design PWB pattern of coil circumference.
2-5. Cleaning
If ultrasonic cleaning is used, check the product with your equipment.
2-6. Storage conditions
Normal temperature (‒5 to 35 ℃), normal humidity (85 %RH max.),shall not be exposed to direct sunlight and harmful
gases and care should be taken so as not to cause dew.
<Package markings>
Package markings include the product number, quantity, and country of origin.
In principle, the country of origin should be indicated in English.
10-Feb-23