product guide
Low Ohm Thick Film Chip Current Sensing
Resistor Type SR
±1% to ±5%, 1/16w to 3w
Construction
Features:
Low TCR from ±100ppm to ±600ppm
Resistance values 10m ohms to 1 ohms
High purity alumina substrate for high power dissipation
Applications:
Battery Packs, Chargers, Cell Phones, Desktop P.C., Automotive Engine Control Switching, Power Supply
Dimensions (mm)
Size Style L W T D1 D2
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 0.50±0.10 0.30±0.20 0.30±0.20
1206 SR06 3.10±0.15 1.55±0.15 0.60±0.10 0.50±0.30 0.40±0.20
2010 SR10 5.00±0.15 2.50±0.15 0.60±0.10 0.60±0.30 0.50±0.25
2512 SR12 6.30±0.15 3.10±0.15 0.60±0.10 0.60±0.30 0.50±0.25
1225 SR25 3.10±0.15 6.30±0.15 1.00±0.10 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

Standard Electrical Specifications:
Item
Type		 Power
Rating		 Operating
Temp. Range		 Resistance
Tolerance 		Resistance
Range		 T.C.R.
SR02 1/16W -55 ~+155°C. ±1%

±2%

±5%		 51m ~ 100m
101m ~ 500m
501m ~ 1		 ±400 ppm
±300 ppm
±200 ppm
SR03 1/10W 20m ~ 50m
51m ~ 100m
101m ~ 500m
501m ~ 1		 ±600 ppm
±400 ppm
±300 ppm
±200 ppm
SR05 1/8W 20m ~ 50m
51m ~ 100m
101m ~ 500m
501m ~ 1		 ±600 ppm
±400 ppm
±300 ppm
±200 ppm
SR06 1/4W 10m ~ 20m
21m ~ 50m
51m ~ 500m
501m ~ 1		 ±600 ppm
±400 ppm
±300 ppm
±200 ppm
SR10 1/2W
SR12 1W
SR37 1W 10m ~ 50m
 ±300 ppm
SR75 2W 1m ~ 350m ±200 ppm
SR25 3W 3m ~ 49m
50m ~ 200m		 ±300 ppm
±150 ppm

PerformanceSpecifications:
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
Series A B W F E P1 P2 P0 Dia D0 T
SR02 0.62±0.5 1.12±0.05 8.00
±0.10		 3.50
±0.05		 1.75
±0.05		 2.00±0.02 2.00
±0.05		 4.00
±0.05		 1.55
±0.05		 0.50±0.10
SR03 1.10±0.10 1.90±0.10 4.00±0.05 0.70±0.10
SR05 1.60±0.15 2.40±0.20 0.80±0.10
SR06 2.00±0.15 3.60±0.20 0.80±0.10

Emboss Plastic Tape Specifications
Series A B W F E P1 P2 P0 Dia D0 T
SR10 2.80±0.20 5.30±0.20 12.00
±0.10		 5.50
±0.05		 1.75
±0.05		 4.00
±0.05		 2.00
±0.05		 4.00
±0.05		 1.55
±0.05		 1.0
±0.20
SR12 3.50±0.20 6.80±0.20
SR37 2.40±0.20 4.25±0.20 12.00
±0.30		 5.50
±0.10		 1.50
±0.20
SR75 2.40±0.20 8.20±0.20
16.00
±0.30
7.50
±0.10
SR25 3.50±0.20 6.80±0.20
12.00
±0.10
1.75
±0.01
 5.5
±0.05
4.00
±0.05
4.00
±0.05
 2.00
±0.05		 1.50
±0.10		 1.40
±0.10

Reel Specifications
Series A
dia		 B
dia		 C
dia		 W T
SR02 180
+0/-3		 60
+1/-0		 13.0
±1.0		 9.0
±0.50		 11.40
±1.00
SR03 180
+0/-3		 60
+1/-0		 13.0
±1.0		 9.0
±0.50		 11.40
±1.00
SR05 180
+0/-3		 60
+1/-0		 13.0
±1.0		 9.0
±0.50		 11.40
±1.00
SR06 180
+0/-3		 60
+1/-0		 13.0
±1.0		 9.0
±0.50		 11.40
±1.00
SR10 180
+0/-3		 60
+1/-0		 13.0
±1.0		 14.0
±0.50		 16.40
±1.00
SR12 180
+0/-3		 60
+1/-0		 13.0
±1.0		 14.0
±0.50		 16.40
±1.00
SR37 180
+0/-3		 60
+1/-0		 13.0
±1.0		 14.0
±0.50		 16.40
±1.00
SR75 180
+0/-3		 60
+1/-0		 13.0
±1.0		 14.0
±0.50		 19.00
±1.00
SR25 180
+0/-3		 60
+1/-0		 13.0
±1.0		 14.0
±0.50		 19.00
±1.00
Packaging Quantity
How To Order:
Example: SR 12 .01 2% 600ppm T/R




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

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