This document describes a series of current sense resistors called OFSC resistors. They are available in 5W and 10W power ratings with resistance values ranging from 0.001 ohm to 0.003 ohm for 5W resistors and 0.0004 ohm to 0.003 ohm for 10W resistors. The resistors have four termination points to eliminate lead resistance and are coated in flame retardant silicone for high temperature operation from -55C to 275C. Electrical and environmental specifications are provided including tolerance, temperature coefficient, overload capacity and more. Typical applications include use in inverters and UPS systems.
This product is a type of Silicone Coated Resistors, which is a type of Wire Wound Resistors. Features of this product are: Fiber glass core, UL approved flame retardant coating. This products is consumable for Low cost solution for Consumer Electronics.
For more information of this product, please copy & paste the url given below:
http://htr-india.com/product/hfa/
This product is a type of Silicone Coated Resistors, which is a type of Wire Wound Resistors. Features of this product are: Fiber glass core, UL approved flame retardant coating. This products is consumable for Low cost solution for Consumer Electronics.
For more information of this product, please copy & paste the url given below:
http://htr-india.com/product/hfa/
HTR India - Products - Current Sense Resistors - Current Sense Open Frame Res...Creativity Please
This product is a type of Current Sense Open Frame Resistors, which is a type of Current Sense Resistors. Features of this product are: Four terminals for highly accurate current sensing applications, UL approved flame retardant coating, Increased lead diameter for high current handling capability. This product is consumable for: Highly accurate current sensing applications in automotive & industrial electronics.
For more information of this product, please copy & paste the url given below:
http://htr-india.com/product/ofsc/
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When stars align: studies in data quality, knowledge graphs, and machine lear...
OF - CURRENT SENSE / LOW OHM OPEN FRAME TYPE
1. Terminations Hot Dipped
in Solder (65/35) or Pb Free
Plating for RoHS Version
CURRENT SENSE / LOW OHM
SILICONE COATED TYPE
OFSC
SERIES
Hi-POWER CURRENT SENSE RESISTOR
Four Terminal / Negligible Inductances
• 5W and 10W
• Resistance Range
For 5W - R00012 to R002
For 10W - R0004 to R003
• Flame Retardant Coating
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
Asper AEC-Q200
2. PHYSICAL CONFIGURATION
OFSC-5-012 5W 15.5 2.1 4.5 12.0 R00012 4.8
OFSC-5-015 5W 15.5 2.1 4.5 12.0 R00015 4.8
OFSC-5-02 5W 15.5 2.1 4.5 12.0 R0002 3.8
OFSC-5-03 5W 15.5 2.1 4.5 12.0 R0003 3.5
OFSC-5-04 5W 13.0 1.6 3.1 9.6 R0004 2.2
OFSC-5-05 5W 13.0 1.6 3.1 9.6 R0005 2.0
OFSC-5-06 5W 13.0 1.6 3.1 9.6 R0006 1.7
OFSC-5-07 5W 13.0 1.6 3.1 9.6 R0007 1.6
OFSC-5-08 5W 13.0 1.6 3.1 9.6 R0008 1.5
OFSC-5-09 5W 13.0 1.6 3.1 9.6 R0009 1.5
OFSC-5-1 5W 13.0 1.6 3.1 9.6 R001 1.5
OFSC-5-2 5W 13.0 1.6 3.1 9.6 R002 1.4
OFSC-10-04 10W 16.0 2.1 6.4 11.5 R0004 9.8
OFSC-10-05 10W 16.0 2.1 6.4 11.5 R0005 8.0
OFSC-10-1 10W 16.0 2.1 6.4 11.5 R001 6.9
OFSC-10-125 10W 14.5 2.1 6.4 11.5 R00125 5.95
OFSC-10-15 10W 14.5 2.1 6.4 11.5 R0015 5.0
OFSC-10-16 10W 14.5 2.1 6.4 11.5 R0016 4.8
OFSC-10-2 10W 14.5 2.1 6.4 11.5 R002 4.2
OFSC-10-25 10W 14.5 2.1 6.4 11.5 R0025 4.2
OFSC-10-3 10W 14.5 2.1 6.4 11.5 R003 2.8
HTR TYPE POWER
RATING
at 70°C
(Ambient)
RESISTANCE
VALUE
TYPICAL
WEIGHT
PER PC
(gms)
• Current Rating : Upto 160amps under certain conditions and diameter of terminals used (please check with factory for details).
• Due to availability of different resistance alloys, it is sometimes possible to offer these resistors with alternatives mounting pitches
(please check with factory for details).
DIMENSIONS (mm)
H D E B
(max) 0.15/-0.1 ±0.5 ±1.0
CURRENT
SENSE / LOW
OHM
SILICONE
COATED TYPE
OFSC
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
3. ELECTRICAL & ENVIRONMENTAL CHARACTERISTICS / DATA
Parameter / Performance Test Test Method / Condition Performance Requirement
Resistance Tolerance No : 303 of MIL 202 F ± 5% (J); ± 3% (H); ± 2% (G)
± 1% (F) + 1.5%
Power Rating Full power dissipation at upto 70°C 5W/10W (70°C)
and linearly derated down to zero
dissipation at 275°C (see derating curve above)
Ambient Operating -55°C to +275°C -55°C to +275°C (Suitably directed
Temperature Range as per derating curve shown above)
Voltage Rating / √ PxR 5 W - Temperature on body /
Limiting Voltage / termination } <120°C / 75°C
Max Working Voltage 10W - Temperature on body /
termination } < 220°C/ 90°C
Short time Overload 1) 10 x Power Rating for 5 secs - For 10W ∆ R ± < 0.75% (typical)
2) 5 x Power Rating for 5 secs - For 5W ∆ R ± < 0.35% (typical)
Inductance < 10 nH
Temperature Co-efficient No: 304 (20°C - 60°C) Closer to 1000 ppm / °C
Of Alloy Utilized of MIL 202 F
Thermal Shock Limiting voltage applied until temperature ∆ R < 0.3% (typical)
stabilizes & then placed in cold temperature
-55°C for 15 minutes
Damp Heat (Steady State ) No : 103 B of MIL 202 F and test condition“D” ∆ R < 0.5%
Solderability No : 208 F of MIL 202 F Continuous and Satisfactory
Load Life No: 108 A of MIL 202 F ∆ R < 1.5% (typical)
CURRENT
SENSE / LOW
OHM
SILICONE
COATED TYPE
OFSC
TYPICAL APPLICATIONS
The OFSC series offers a PCB mounted, non-inductive resistor having high stability / overload capacity. The unique 4 termination design
serves the purpose of eliminating the inherent resistance of the leads.This makes the resistor highly accurate in current sensing operations.
The resistor is finding widespread acceptance among inverter / UPS manufacturers.
ORDERING INFORMATION
1. For RoHS version - OFSC-10-2 *
Series Type Packing Resistance Value Tolerance
OFSC OFSC-10-2/ Bulk OFSC-10-2 R002 J
OFSC-10-2* OFSC-10-2*
e : info@htr-india.com
www.htr-india.com
Rev Date : 22/11/2016
