product guide
Low Ohm Thick Film Chip Current Sensing
Resistor Type SR
±1% to ±5%, 1/20w to 3w
Construction
Features:
3w power rating in 1w, 1225 package
Low TCR from ±100ppm
Resistance values 1m ohms to 1 ohms
High purity alumina substrate for high power dissipation
Long side terminations for higher power rating
Applications:
Battery Packs, Chargers, Cell Phones, Desktop P.C., Automotive Engine Control Switching, Power Supply
Dimensions (mm)
Size Style L W T D1 D2
0201 SR01 0.58±0.05 0.29±0.05 0.23±0.05 0.12±0.05 0.15±0.05
0402 SR02 1.00±0.05 0.50±0.05 0.32±0.05 0.25±0.10 0.20±0.10
0603 SR03 1.60±0.10 0.80±0.10 0.45±0.10 0.30±0.20 0.30±0.20
0805 SR05 2.00±0.15 1.25±0.15 0.55±0.10 0.30±0.20 0.40±0.25
1206 SR06 3.05±0.15 1.55±0.15 0.55±0.10 0.50±0.30 0.40±0.25
1210 SR13 3.00±0.15 2.50±0.15 0.55±0.10 0.50±0.30 0.50±0.25
2010 SR10 5.00±0.20 2.45±0.15 0.60±0.15 0.60±0.30 0.50±0.25
2512 SR12 6.35±0.20 3.15±0.15 0.60±0.10 0.60±0.30 0.55±0.25
2512 SR12
2W(10-99m)		 6.35±0.20 3.15±0.15 0.74±0.10 0.60±0.30 0.55±0.25
2512 SR12
2W(100-1000m)		 6.35±0.20 3.15±0.15 0.74±0.10 0.60±0.30 2.70±0.10
1225 SR25 3.10±0.15 6.30±0.15 0.90±0.15 0.60±0.30 0.55±0.25
3720 SR37 2.00±0.20 3.75±0.20 0.60±0.10 0.40±0.20 0.40±0.20
7520 SR75 2.00±0.20 7.50±0.30 0.60±0.10 0.40±0.20 0.40±0.20


High Power Rating Electrical Specifications
Type
Power Rating
at 70°C
Operationg Temp.
Range
Resistance Range (m)
1%, 2%, 5%
TCR
(PPM°C)
SR03 (0603)
1/8W
-55 ~ + 155°C
51 ~ 100
101 ~ 500
501 ~ 1010
±400
±300
±200
SR05 (0805)
1/4W
SR06 (1206)
1/2W
-55 ~ + 155°C
10 ~ 200
21 ~ 50
51 ~ 500
501 ~ 1000
±600
±400
±300
±200
SR13 (1210)
3/4W
SR10 (2010)
1W
SR12 (2512)
1.5W
SR12 (2512)
2W
Low TCR Electrical Specifications
Type
Power Rating
at 70°C
Operationg Temp.
Range
Resistance
Tolerance
Resistance Range
(m)
 TCR (PPM°C)
SR06 1206
1/4W
-55 ~ + 155°C
±1%, ±2%, ±5%
100 ~ 1000
±100
SR13 1210
1/2W
100 ~ 1000
±100
SR10 2010
3/4W
100 ~ 1000
±100
SR12 2512
1W
100 ~ 1000
±100
SR37 3720
1W
100 ~ 500
±100
SR75 7520
2W
50 ~ 350
±100
Operating Current = √(P/R), Operating Voltage V= √(PR)

Performance Specifications:
1 Temperature Coefficient of Resistance As Spec MIL-STD-202F Method 304
+25/-55/+25/+125/+25°C.
2 Short Term Overload ±(0.5% + 0.05) JIS-C-5202-5.5
RCWV 2.5orMax Overload Voltage
5seconda
3 Dielectric Withstand Voltage by Type MIL-STD-202F Method 301
Apply Max Overload Voltage
for 1 minute
4 Insulation Resistance >1000M MIL-STD-202F Method 302
Apply 100Vdc for 1 minue
5 Thermal Shock ±(0.5% + 0.05) MIL-STD-202F Method 107G
-55°C.~125°C, 100cycles
6 Load Life ±(1% + 0.05) MIL-STD-202F Method 108A
RCWV 70°C 1.5 hours on, 0.5 hours off
1000~1048 hours
7 Humidity
(Steady State)		 ±(1% + 0.05) MIL-STD-202F Method 103B
40°C, 90-95%RH, RCWV 1.5 hours on,
0.5 hours off 1000~1048 hours
8 Resistance to Dry Heat ±(0.5% + 0.05) JIS-C-5202-7.2
96 hours @ +125°C without load
9 Low Temperature Operation ±(0.5% + 0.05) JIS-C-5202-7.1
1 hour, -65°C followed by 45 minutes
of RcWV
10 Bending Strength ±(0.5% + 0.05) JIS-C-5202-6.1
Bending Amplitude 3mm for 10 seconds
11 Solderability 95% min. coverage MIL-STD-202F Method 208H
235°C ±5°C, 2±0.5 (sec)
12 Resistance to Solderimng Heat ±(0.5% + 0.05) MIL-STD-202F Method 2010E
260±5°C, 10 ±1second

Paper Tape Specifications
Unit: mm
Codes A B W E F P0 P1 P2 Dia. D0 T
SR01 0.40±0.05 0.70±0.05 8.00±0.10 1.75±0.05 3.5±0.05 4.00±0.10 2.00±0.05 2.00±0.05 1.55±0.05 0.42±0.02
SR02 0.70±0.05 1.16±0.05 2.00±0.05 0.40±0.03
SR03 1.10±0.05 1.90±0.05 4.00±0.10 0.60±0.03
SR05 1.60±0.05 2.37±0.05
4.00±0.10
 0.75±0.05
SR06 2.00±0.05 3.55±0.05
4.00±0.10
 0.75±0.05
SR13 2.75±0.05 3.4±0.05
4.00±0.10
 0.75±0.05

Emboss Plastic Tape Specifications
Unit: mm
Codes A B W E F PO P1 P2 Dia D0 T
SR10 2.85±0.10 5.45±0.10 12.0±0.10 1.75±0.010 5.50±0.05 4.00±0.05 4.00±0.10 2.00±0.05 1.50±0.010 1.00±0.20
SR12 3.40±0.10 6.65±0.10
12.0±0.10
1.75±0.010
5.50±0.05
4.00±0.05
4.00±0.10
2.00±0.05
1.50±0.010
1.00±0.20
SR25 3.50±0.20 6.80±0.20 12.0±0.30
1.75±0.010
5.50±0.010
4.00±0.010
4.00±0.10
2.00±0.05
1.55±0.010
 1.00±0.20
SR37 2.50±0.20 4.45±0.20 12.00±0.30 1.75±0.010
5.50±0.05
4.00±0.05
4.00±0.10
2.00±0.05
1.50±0.010
 1.50±0.20
SR75 2.50±0.20 8.30±0.20
16.00±0.30
1.75±0.10
7.80±0.05
4.00±0.05
4.00±0.10
2.00±0.05
1.50±0.010
1.50±0.010

Packaging
How To Order:
Example: SR 12 .01 2% 600ppm 1.5W T/R







TO ORDER PRODUCT
E mail: microohm@mail.com
Call Toll Free: 1-800-845-5167

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