The Isabellenhütte FMH-K-R000 is an ISA-PLAN® high power jumper: a zero ohm resistor of solid metal plate design, built in full copper with tinned terminals on a standard 0603 pad. It carries a constant current of up to 26A at a resistance value below 0.2mΩ.

Jumpers and Multiple Use of PCB Layouts

The FMH-K-R000 is used as a jumper and for the multiple use of PCB layouts.

Current, Power and Resistance

Constant current is rated up to 26A and power at 0.135W at a terminal temperature of 125°C. Full rated power holds to a terminal temperature of 125°C and falls to zero at 170°C. Resistance value is below 0.2mΩ with an inductance below 1nH. The temperature coefficient is 3200±500ppm/K, measured from 20°C to 60°C. The datasheet gives the pulse current characteristic at a terminal temperature of 125°C for pulse durations from 0.001ms to 100ms.

Temperature Range and Long-Term Stability

The applicable temperature range is −65°C to +170°C. Specified values by test:

• Temperature cycling, 2000 cycles from −55°C to +150°C: ±20% ±0.2mΩ
• Operational life, 2000h at nominal load: ±20% ±0.2mΩ
• High temperature exposure, 2000h at 170°C: ±20% ±0.2mΩ
• Bias humidity, +85°C at 85% relative humidity for 1000h: ±10%
• Resistance to soldering heat, three reflow cycles to condition K with 60s to 150s above 217°C: ±30%

Soldering and Packaging

The FMH-K-R000 is mounted by reflow or infrared soldering, with a recommended profile of 260°C peak, 40s at 255°C and 90s at 217°C. The proposed reflow layout is two pads of 1.0mm by 0.96mm, 0.6mm apart. Parts are supplied on 8mm paper tape to DIN EN 60286-3, 20,000 to a 13-inch reel. Components are not marked.

Samples and Start of Production

C-samples of the FMH-K-R000 are available on request. Start of production is February 2027.

Contact our resistor specialists to request C-samples of the FMH-K-R000 or to discuss it for your layout.