SMD High Power Resistors
Type 3502 Series
Key Features
2W@70°C in
2010 size
package
Suitable for
auto
placement
Available from
distribution
Terminal finish
matte sn over
ni barrier
TE Connectivity is pleased to introduce this thick film high power device, sister
to our popular 3522 series, suitable for auto placement in volume and for most
applications. Supplied as standard on 7 inch Reels of 2000 pieces per reel.
Characteristics – Electrical
Power Rating @ 70°C
Resistance Range
Resistance Tolerance
Temperature Coefficient of Resistance
(TCR)
Max. Working Voltage
Max. Overload Voltage
Dielectric Withstanding Voltage
Operating Temperature Range
2W
1Ω ~ 10MΩ
±1%, ±5%
Ω~ Ω ≤±
PPM/℃
. Ω~ MΩ ≤±
PPM/℃
200V
500V
500V
-55℃ ~ 155℃
Resistors shall have a rated direct-current (DC) continuous working voltage or an
approximate sine-wave root-mean-square (RMS) alternating-current (AC)
continuous working voltage at commercial line frequency and waveform
corresponding to the power rating, as determined from the following formula :
RCWV = √P x R
Where the calculated RCWV is greater than the stated Max. Working Voltage,
the Max. Working Voltage will apply.
1773204-4 Rev. A 01/2019
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
SMD High Power Resistors
Power Rating and Derating
Resistors shall have a power rating based on continuous load operation at an
ambient temperature of 70 ℃ . For temperature in excess of 70 ℃ , The load
shall derate as shown in chart below.
Construction and Dimensions:
Type
3502
1773204-4 Rev. A 01/2019
L
5.00 ± 0.10
Dimensions in
millimetres unless
otherwise specified
W
2.50 ± 0.15
Dimensions (mm)
H
ℓ
1.10 ± 0.10 0.60 ± 0.25
Dimensions Shown for
reference purposes only.
Specifications subject to
change
ℓ
0.50 ± 0.20
For Email, phone or live chat,
go to: www.te.com/help
SMD High Power Resistors
Performance Specification
Characteristics
Limits
Dielectric Withstanding
Voltage
No evidence of flashover,
mechanical damage, arcing
or insulation break down
Temperature
Coefficient
Ω~ Ω ≤±
PPM/℃
. Ω~ MΩ ≤±
PPM/℃
Test Methods
( JIS C 5201-1 )
4.7 Clamped in the trough of a
90℃ metallic v-block and shall be
tested at ac potential
respectively specified in the type
for 60-70 seconds
4.8 Natural resistance change per
temp. degree centigrade.
R2-R1
R1(t2-t1)
1773204-4 Rev. A 01/2019
Short Time Overload
Resistance change rate is:
± 5% . % + . Ω Max.
± % . % + . Ω Max.
Solderability
95 % coverage Min.
Soldering heat
Resistance change rate is:
± . %+ . 5Ω Max.
Temperature Cycling
Resistance change rate is:
± 5% . % + . Ω Max.
± % .5% + . Ω Max.
Humidity
Resistance change rate is:
± 5% . % + . Ω Max.
± % .5% + . Ω Max.
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
x 106 (PPM/℃)
R1: Resistance value at room
temperature (T1)
R2: Resistance value at room
temp. plus 100 ℃(T2)
Test pattern: room temp. (T1),
room temp. +100℃(T2)
4.13 Permanent resistance
change after the application of a
potential of 2.5 times RCWV for 5
seconds
Wave Solder:
Test temperature of solder:
245°C ±3°C dipping time in solder
: 2-3 seconds.
Reflow
4.18 Dip the resistor into a solder
bath having a temperature of
260°C±3°C and hold it for 10±1
seconds.
4.19 Resistance change after
continuous 5 cycles for duty cycle
specified below:
Step Temp.
Time
1
-55℃ ± 3℃
30m
2
Room temp.
10~15m
3
+155℃ ± 2℃
30m
4
Room temp.
10~15m
4.24 Temporary resistance
change after 240 hours exposure
in a humidity test chamber
controlled at 40±2°C and 90-95%
relative humidity
For Email, phone or live chat,
go to: www.te.com/help
SMD High Power Resistors
Performance Specification (Cont.)
Characteristics
Limits
Load life in humidity
Resistance change rate is:
± 5% . % + . Ω Max.
± % . % + . Ω Max.
Load Life
Resistance change rate is:
± 5% . % + . Ω Max.
± % . % + . Ω Max.
Terminal bending
Resistance change rate is:
± . % + . 5Ω Max.
Test Methods
( JIS C 5201-1 )
7.9 Resistance change after 1,000
hours (1.5 hours "on", 0.5 hour
"off" ) at RCWV in a humidity
chamber controlled at 40℃ ± 2℃
and 90 to 95 % relative humidity
4.25.1 Permanent resistance
change after 1,000 hours
operating at RCWV, with duty
cycle of (1.5 hours "on", 0.5 hour
"off") at 70℃ ± 2℃ ambient
4.33 Twist of Test Board:
Y/X = 3/90 mm for 60 seconds
Marking
A. 4 digit marking for E-96 series:
*The first 3 digits are significant figures of resistance and the 4th digit
denoted number of zeros.
Ex.
*For ohmi
alues elo
Ex.
1273
127KΩ
Ω, letter "R" is for decimal point.
49R9
49.9Ω
B. 3 digit marking for E-24 series:
*The first 2 digits are significant figures of resistance and the 3rd digit
denoted number of zeros
Ex.
*For ohmi
alues elo
Ex.
124
120KΩ
Ω, letter "R" is for decimal point
4R7
4.7Ω
Soldering
PCB Plan (mm)
4 layers PCB specification:
1) Outside 2 layers (Top and Bottom)
with copper foil thickness at 2oz.
2) Inside 2 layers (Middle layers)
with copper foil thickness at 4 oz.
1773204-4 Rev. A 01/2019
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
SMD High Power Resistors
Soldering
Reflow solder profile
Packaging
Tape and Reel
(mm)
A ±0.1
B ±0.1
C±0.15
2.65
5.25
2.0
ØD+0.1
-0
1.5
E±0.1
F±0.15
G ±0.1
W ±0.3
1.75
5.5
4.0
12
ØD1
±0.1
1.0
T ± 0.1
1.35
Peeling Strength of Top Cover Tape
Test Condition: 0.1 to 0.7 N at a peel-off speed of 300 mm / min.
1773204-4 Rev. A 01/2019
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
SMD High Power Resistors
Reel Dimensions
Qty Reel
2000
A±0.5
2.0
B±0.5
13.0
C±0.5
21.0
D±1
60.0
M±2
178
W±1
13.5
Environment Related Substance
This product complies to EU RoHS directive, EU PAHs directive, EU PFOS
directive and Halogen free.
Storage Condition
The performance of these products, including the solderability, is guaranteed
for a year from the date of arrival at your company, provided that they
remain packed as they were when delivered and stored at a temperature of
25°C ± 10°C and a relative humidity of 60%RH ± 10%RH, chemical and dust
free atmosphere.
Even within the above guarantee periods, do not store these products in the
following conditions:
1. In salty air or in air with a high concentration of corrosive gas, such as Cl2,
H2S, NH3, SO2, or NO2
2. In direct sunlight
How To Order
3502
Common Part
3502 – 2W 2010
Resistor
1773204-4 Rev. A 01/2019
Dimensions in
millimetres unless
otherwise specified
1R0
Resistance Value
1Ω - 1R0
100Ω - 100R
1KΩ - 1K0
F
Tolerance
T
Pack Style
F – 1%
J – 5%
T- 2000 per reel
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
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