Precision sensors & shunt resistors for electronic fuses

Safety-relevant systems in vehicles, such as electronic steering, are connected to non-safety-relevant systems (infotainment, etc.) via the 12 V electrical system.

If a non-safety-relevant system is faulty, this can, in the worst case, cause the failure of all components in the vehicle electrical system, including the safety-relevant ones. Fuses in vehicles are therefore of fundamental importance in order to disconnect the faulty system from the vehicle electrical system in the event of a malfunction.

The classic fuse boxes in vehicles, which essentially consist of relays and fuses, are increasingly being replaced and integrated into zonal control units. These control units are units that can be arranged in different zones of the vehicle. Due to this arrangement, costs can be significantly reduced. The increasing complexity of vehicle electronics is also leading to fuses and relays being replaced by electronic circuits known as circuit breakers.

The current measurement in the electronic circuit breakers is mainly carried out using shunt-based current measurement, for which Isabellenhütte supplies the appropriate portfolio.

Low initial tolerance

The low initial tolerances of the components allow them to be used without the need for initial calibration by the customer.

High pulse loads

The high pulse load capacity of the components enables the use of the smallest components with maximum reliability in electronic fuses.

Flexible placement

With small, compact but highly accurate shunt-based sensors from our portfolio, current measurement can be integrated flexibly and easily.

Our products for your circuit breaker

If you cannot find a suitable product for your requirements here, please contact us.

BVB

4-terminal resistor made of composite material. Ideal for use on DCB and FR4 Space-saving design.

Product area:	Resistor
Size:	2725
Power (Watt):	3 - 12
Tol (%):	1.00
Res (Ohm):	0.0002 - 0.005

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BVE

2-terminal resistor made of composite material. Very low resistance values. Large connectors for high currents.

Product area:	Resistor
Size:	5930
Power (Watt):	4 - 15
Tol (%):	1.00 - 5.00
Res (Ohm):	0.0001 - 0.003

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BVN

4-terminal resistor made of composite material. Ideal for use on DCB and FR4. Space-saving design.

Product area:	Resistor
Size:	1216
Power (Watt):	3 - 10
Tol (%):	1.00 - 5.00
Res (Ohm):	0.0003 - 0.003

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BVR

4-terminal resistor made of composite material. Ideal for use on DCB and FR4. Very low resistance values.

Product area:	Resistor
Size:	4026
Power (Watt):	5 - 12
Tol (%):	1.00 - 5.00
Res (Ohm):	0.0002 - 0.003

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BVS

2-terminal resistor made of composite material. Very low resistance values. Large connectors for high currents.

Product area:	Resistor
Size:	3920
Power (Watt):	2.5 - 12
Tol (%):	1.00 - 5.00
Res (Ohm):	0.0001 - 0.005

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BVT

2-terminal resistor made of composite material. Very low resistance values. Large connectors for high currents.

Product area:	Resistor
Size:	2512
Power (Watt):	1.5 - 10
Tol (%):	1.00 - 5.00
Res (Ohm):	0.0002 - 0.0068

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BVZ

2-terminal resistor made of composite material. Ideal for use on DCB. Space-saving design.

Product area:	Resistor
Size:	4026
Power (Watt):	5 - 13
Tol (%):	1.00 - 5.00
Res (Ohm):	0.000525 - 0.003

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CMK

2-terminal resistor for medium power requirements. Low TC <50ppm/K for the entire value range.

Product area:	Resistor
Size:	1206
Power (Watt):	0.5 - 4
Tol (%):	1.00 - 5.00
Res (Ohm):	0.005 - 0.1

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CMP

2-terminal resistor for medium power requirements. Low TC <50ppm/K for the entire value range.

Product area:	Resistor
Size:	2010
Power (Watt):	1 - 2
Tol (%):	1.00 - 5.00
Res (Ohm):	0.01 - 0.5

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CMS

2-terminal resistor for medium power requirements. Low TC <50ppm/K for the entire value range.

Product area:	Resistor
Size:	2512
Power (Watt):	2 - 2.5
Tol (%):	1.00 - 5.00
Res (Ohm):	0.01 - 0.5

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FMH

Zero Ohm Resistor / Jumper. Solid metal plate design. Ideal for high load applications up to 35 A.

Product area:	Resistor
Size:	0603
Power (Watt):	0.135
Res (Ohm):	0.0002

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FMK

2-terminal resistor. Low resistance values <=6 milliohms. Good TC. Solid construction as metal plate. High pulse load.

Product area:	Resistor
Size:	1206
Power (Watt):	1 - 3.5
Tol (%):	1.00 - 10.0
Res (Ohm):	0.002 - 0.006

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FMP

2-terminal resistor. Low resistance values <=6 milliohms. Good TC. Solid construction as metal plate. High pulse load.

Product area:	Resistor
Size:	2010
Power (Watt):	1 - 3.5
Tol (%):	1.00 - 5.00
Res (Ohm):	0.002 - 0.006

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PMT

Pulse load resistor for snubber circuits or pre-charging and discharging applications.

Product area:	Resistor
Size:	2817
Tol (%):	10.0
Res (Ohm):	0.050 - 2.5

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SMK

2-terminal resistor with large solder pads. Very powerful. Largest selection of resistor values up to 0.5 Ohm.

Product area:	Resistor
Size:	1206
Power (Watt):	1 - 1.5
Tol (%):	1.00 - 5.00
Res (Ohm):	0.008 - 0.5

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SMK-R000

Zero Ohm Resistor / Jumper. Solid metal plate construction. Ideal for high load applications up to 50 A. Standard solder pad connections.

Product area:	Resistor
Size:	1206
Power (Watt):	0.5
Res (Ohm):	0.0002

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SMP

2-terminal resistor with large solder pads, very powerful. Largest selection of resistor values up to 1 Ohm.

Product area:	Resistor
Size:	2010
Power (Watt):	2 - 3
Tol (%):	0.500 - 1.00
Res (Ohm):	0.005 - 1

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SMS

2-terminal resistor with large solder pads. Very powerful. Largest selection of resistance values up to 1 Ohm.

Product area:	Resistor
Size:	2512
Power (Watt):	3 - 5
Tol (%):	0.500 - 5.00
Res (Ohm):	0.005 - 1

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SMS-R000

Zero Ohm Resistor / Jumper. Solid metal plate construction. Ideal for high load applications up to 100 A. Standard solder pad connections.

Product area:	Resistor
Size:	2512
Power (Watt):	2
Res (Ohm):	0.0002

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SMT

2-terminal resistor with large solder pads. Very powerful. Largest selection of resistor values up to 4.7 Ohm.

Product area:	Resistor
Size:	2817
Power (Watt):	5 - 7
Tol (%):	0.500 - 5.00
Res (Ohm):	0.004 - 4.7

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SMT-R000

Zero Ohm Resistor / Jumper. Standard solder pad geometry. Solid metal plate construction. Ideal for high load applications up to 100 A. Standard solder pad connectors.

Product area:	Resistor
Size:	2817
Power (Watt):	2
Res (Ohm):	0.0002

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VMI-R000

Zero Ohm Resistor / Jumper. Solid metal plate design. Ideal for high load applications up to 35 A.

Product area:	Resistor
Size:	0805
Power (Watt):	0.25
Res (Ohm):	0.0002

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VMK

2-terminal resistor. Standard solder pad geometry. Very low TC <20ppm/K for the entire value range. High continuous load, wide range of resistance values up to 470 mOhm.

Product area:	Resistor
Size:	1206
Power (Watt):	1 - 1.5
Tol (%):	1.00 - 5.00
Res (Ohm):	0.01 - 0.47

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VMP

2-terminal resistor. Standard solder pad geometry. Very low TC <20ppm/K for the entire value range. High continuous load. Wide range of resistance values up to 1 Ohm.

Product area:	Resistor
Size:	2010
Power (Watt):	2 - 3
Tol (%):	1.00 - 5.00
Res (Ohm):	0.005 - 1

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VMS

2-terminal resistor. Standard solder pad geometry. Very low TC <20ppm/K for the entire value range. High continuous load. Wide range of resistance values up to 1 Ohm.

Product area:	Resistor
Size:	2512
Power (Watt):	3 - 4
Tol (%):	1.00 - 5.00
Res (Ohm):	0.005 - 1

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