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VPG Foil Resistors’ New FRFC Flip-Chip Resistors Offer Ultra-Stable Performance, Improved Ruggedness for High Precision Applications

2016-02-22 | Return

MALVERN, Pa. — Feb. 22, 2016 — VPG Foil Resistors announced today that its Vishay Foil Resistors brand has released the FRFC Series, a new family of ultra-high-precision flip chip resistors based on the market-leading Z1 Foil Technology. The FRFC Series delivers remarkable load life stability of 50 ppm, better withstanding to higher temperatures, and better moisture resistance than previous-generation foil resistors. Compared to surface-mount chips with wraparound terminations, the flip chip configuration of the FRFC Series provides PCB space savings of more than 35%.

The FRFC Series owes its high-performance characteristics to a resistive element based on Z1 Foil Technology, a solid alloy that is matched to the ceramic substrate with polyimide bonding to enable a uniform thickness of the bond line, superior adhesion strength, and improved resistance to moisture. Virtually insensitive to destabilizing factors, the FRFC Series features a temperature coefficient of resistance (TCR) or ± 0.2 ppm/°C (−55°C to +125°C, +25°C ref), ESD immunity to 25 kV or more, and noise-free operation. Its power rating is 750 mW at +70°C, a 25% improvement over the VFCP Series, which is already a superior product in the high-precision resistors industry. The FRFC Series flip-chip resistors are offered in the 0805, 1206, 1506, 2010, and 2512 case sizes, with power TCR (ΔR due to self-heating) of 5 ppm at rated power and tight tolerances to ±0.01%.

“The FRFC Series devices provide designers with the most stable resistors available today — allowing them to achieve new benchmark levels in performance,” said Jacky Acoca, Vishay Foil Resistors Director of Sales and Marketing. “In addition to saving on board space, the devices’ flip-chip terminations increase reliability by providing better strain relief to eliminate cracked substrates and board delamination.”

The FRFC Series flip chip resistors are optimized for a wide range of high-precision industrial, telecommunications, medical, and laboratory applications, including bridge networks, gyro navigational controls, pressure sensors, standards and decade boxes, process controls, weighing systems, electron beams, and automatic test equipment.

The new resistors offer a resistance range from 5 W to 125 kW with any conceivable ohmic value within this range — out to six digits — available with no additional cost or lead time effect. They feature a rise time of 1.0 ns with effectively no ringing; a thermal stabilization time of < 1 s (within 10 ppm of steady state value); current noise of 0.010 μVrms/V of applied voltage (< -40 dB); and a voltage coefficient of < 0.1 ppm/V. The RoHS-compliant FRFC resistors offer a non-inductive (< 0.08 μH), non-capacitive design and are available in matched sets upon request.

Device Specification Table:

Chip size	Rated power (mW) at +70°	Resistance range (W)
0805	200	5 to 8 k
1206	300	5 to 25 k
1506	400	5 to 30 k
2010	500	5 to 70 k
2512	750	5 to 125 k

Further information about the FRFC Series and other Vishay Foil Resistors products is available at http://www.vishayfoilresistors.com. Follow Vishay Foil Resistors at http://twitter.com/foilresistor.

Source：http://www.vishaypg.com/