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Thin Film Chip Resistor Arrays come in 073, 074 case sizes.

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Thin Film Chip Resistor Arrays come in 073, 074 case sizes.
Thin Film Chip Resistor Arrays come in 073, 074 case sizes.

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December 9, 2013 - Featuring RoHS-compliant construction, PRA073 and PRA074 are precision, SMT, wraparound chip resistor arrays available with up to 8 resistors of different ohmic values, tight tolerance ratios down to 0.01%, and TCR tracking to 1 ppm/C. Pitch is 0.7 mm, and dimensions are 1.4 x 0.75 mm for PRA073 and 1.4 x 1 mm for PRA074 (withtwo resistors). Offering ohmic ranges up to 100 kΩ, arrays feature power ratings to 40 mW per resistor at +70C and limiting voltages to 40 V.
Original Press Release

63 Lincoln Hwy., P.O. Box 4004
Malvern, PA, 19355

Vishay Intertechnology Extends PRA Series of High-Precision Thin Film Chip Resistor Arrays to 073 and 074 Case Sizes

Arrays Offer up to Eight Resistors of Different Ohmic Values With Tolerance Ratios to 0.01 % and TCR Tracking to 1 ppm/C

MALVERN, Pa. — Vishay Intertechnology, Inc. (NYSE: VSH) today announced that it has extended its PRA series of high-precision thin film surface-mount wraparound chip resistor arrays to the compact 073 and 074 case sizes. The new PRA073 and PRA074 are the industry's smallest such devices available with up to eight resistors of different ohmic values, tight tolerance ratios down to 0.01 %, and TCR tracking to 1 ppm/C.

Each of the new PRA arrays features a pitch of 0.7 mm, with ultra-compact dimensions of 1.4 mm by 0.75 mm for the PRA073 and 1.4 mm by 1 mm for the PRA074 (with two resistors). The devices offer ohmic ranges up to 100 kΩ, power ratings to 40 mW per resistor at +70 C, and limiting voltages to 40 V. The PRA073 and PRA074 both feature tight TCR of 10 ppm/C, very low noise of ≤ 35 dB, and a low voltage coefficient of ≤ 0.01 ppm/V.

The Vishay Sfernice arrays released today are designed for use in instrumentation, calibration, and data conversion systems in aircraft engine controls and flight command computers; precision scales; automatic test equipment; and medical applications. In these end products, the devices save board space and can replace more expensive matched resistors without compromising precision or reliability.

The PRA073 and PRA074 feature a high-stability passivated nichrome resistive layer for a load-life ratio of 0.02 % for 1,000 hours at +70 C. With high-quality contacts between the resistive and conductive layers, and a proprietary patterning and laser trimming technique, designs are simplified by eliminating the need for digital drift compensation.

The surface-mount wraparound chip resistor arrays are RoHS-compliant and conform to Vishay "Green" standards. The devices are available with humidity withstand testing to AEC-Q200.

Device Specification Table:
Part number PRA073 PRA074
Case size 073 074
Dimensions 1.4 mm x 0.75 mm 1.4 mm x1 mm
Ohmic range 10 Ω to 50 K 10 Ω to 100 KΩ
Power ratings (per resistor) 30 mW 40 mW
Limiting voltages 20 V 40 V

Samples and production quantities of the PRA073 and PRA074 are available now, with lead times of nine weeks for larger orders. Pricing for U.S. delivery starts at $2 per piece.

Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay's product innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can be found on the Internet at
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