SRM
Surge Resistant MELF Resistor
bility
tion
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VDE
REG.-Nr. A830
Specifications Per
VDE
• IEC 60115-1
D2
REG.-Nr. E932
• AEC-Q200 Rev.D
SRM
Features
• AEC-Q200 Compliant
• Anti-sulfuration test qualified
B
L
• MELF packaging yet capable of high power handling
D1
• Special conductive film enhances anti-surge capability.
• Absorbs harmful surge which damages precious devices or
components.
• SMD-enabled alternative to carbon composition resistors
• Approved to the safety requirement of VDE0860
under license number 40043961 (=IEC 60065 clause 14.2a
& UL 1676)
• Products meet RoHS requirements and do not contain
substances of very high concern identified by European
Chemicals Agency
DIMENSIONS
Body Length
(L, mm)
Type
Cap Diameter
(D1, mm)
Body Diameter
(D2, mm)
Soldering Spot
(B, mm)
Net Weight
Per 1000 pcs
SRM204
3.52 ± 0.15
1.35 ± 0.1
D1+0.02/ -0.15
0.6 Min.
17 grams
SRM204T
3.52 ± 0.15
1.35 ± 0.1
D1+0.02/ -0.15
0.6 Min.
17 grams
SRM207
5.90 ± 0.20
2.20 ± 0.1
D1+0.02/ -0.2
1.0 Min.
66 grams
SRM207P
5.90 ± 0.20
2.20 ± 0.1
D1+0.02/ -0.2
1.0 Min.
66 grams
SRM101
5.90 ± 0.20
2.20 ± 0.1
D1+0.02/ -0.2
1.0 Min.
66 grams
SRM101T
5.90 ± 0.20
2.20 ± 0.1
D1+0.02/ -0.2
1.0 Min.
66 grams
SRM201
8.50 ± 0.50
3.00 ± 0.2
D1+0.05/ -0.35
1.3 Min.
186 grams
SRM301
10.5 ± 0.50
4.00 ± 0.5
D1+0.05/ -0.45
1.6 Min.
446 grams
GENERAL SPECIFICATIONS
Type
Power
Rating
( at 70°C )
Maximum
Working
Voltage
Maximum
Permissible
Surge Voltage
Minimum
Resistance
Maximum
Resistance
Resistance
Tolerance
Available
Resistance
Values
SRM204
1/4W
400V
2,000V
1Ω
1MΩ
±1%~±5%
E-24/E-96
SRM204T
1/2W
450V
4,000V
1Ω
10MΩ
±1%~±5%
E-24/E-96
SRM207
1/2W
600V
6,000V
1Ω
2M2Ω
±1%~±5%
E-24/E-96
SRM207P
1/2W
600V
8,000 V
0.1Ω
2M2Ω
±1%~±5%
E-24/E-96
SRM101
1W
600V
8,000 V
0.1Ω
2M2Ω
±1%~±5%
E-24/E-96
SRM101T
1W
600V
10,000 V
0.1Ω
2M2Ω
±1%~±5%
E-24/E-96
SRM201
2W
700V
9,000V
0.1Ω
2M2Ω
±1%~±5%
E-24/E-96
SRM301
3W
800V
10,000V
0.1Ω
2M2Ω
±1%~±5%
E-24/E-96
Special sizes, values, and specifications not listed available on special order.
For resistance values outside the specified ranges, please contact us.
179
www.firstohm.com.tw
general@firstohm.com.tw
Revision: 15-AUG-2019
SRM
Surge Resistant MELF Resistor
bility
tion
Relia
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Innova
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PART NUMBER
SRM204T
F
16R2
TKZ
TR3K0
Type
Tolerance*
Resistance
TCR
Packaging
F(1%)
G (2%)
J (5%)
16.2Ω
4-character code
containing 3 significant digits
1 letter multiplier
3-character code
5-character code
TKZ = Default Product
Temperature Coefficient.
TR = Tape Reel
OHM MULTIPLIER
R=1
K = 103
M = 106
G = 109
Information of typical
product temperature
coefficient can be found
in the Technical Summary
section of the datasheet.**
SRM
Example: SRM204TF16R2TKZTR3K0
(pieces per reel)
SRM204/SRM204T
3K0 = 3,000
6K0 = 6,000***
10K = 10,000***
SRM207/SRM207P
SRM101/SRM101T
2K0 = 2,000
6K0 = 6,000***
10K = 10,000***
SRM201
2K5 = 2,500
SRM301
2K0 = 2,000
* Listed values may not be applicable across product types or to all resistance values. Please check with us before placing order.
** For the availabilities of non-default temperature coefficient, please check with us. Reference for TCR letter codes can be found in section (4) of Part
Number Construction in the Appendices.
*** upon request
RATED
LOAD
POWER DERATING CURVE
o
AMBIENT TEMPERATURE ( C)
TECHNICAL SUMMARY
Characteristics
Ranges & Limits
Dielectric Withstanding Voltage, VAC or DC
SRM204T
SRM204/207/207P/101
SRM201/101T
SRM301
Temperature Coefficient, PPM / °C*
±200, ±400, ±800, ±1200
Operating Temperature Range, °C
-55 ~ +150
Insulation Resistance, MΩ
>104
Tin Whisker (JESD201 Temperature Cycling &
High Temp. /Humidity Storage), μm
SRM101F3R60TKZTR2K0 价格&库存
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