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High power wirewound resistor VISHAY RSSD40370C2R20KB02 designed for low ohmic values and severe shock vibration resistance

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High power wirewound resistor VISHAY RSSD40370C2R20KB02 designed for low ohmic values and severe shock vibration resistance

Resistance : 2.2Ω

Power(Watts) : 450W

Tolerance : ±10%

Description : 2.2Ω 450W ±10% Through Hole Adjustable Power Resistor RoHS

Mfr. Part # : RSSD40370C2R20KB02

Model Number : RSSD40370C2R20KB02

Package : Through Hole

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Product Overview

The Vishay Sfernice RSSD series offers industrial high-power, vitreous tubular, adjustable wirewound resistors designed for demanding applications. These resistors are known for their ability to withstand heavy transient conditions, severe shock, and vibration. They are particularly useful for low ohmic value applications and can be tapped using adjustable collars for flexible resistance adjustment. Standard models feature a single adjustable collar.

Product Attributes

Brand: Vishay Sfernice
Material: WELDED STAINLESS STEEL 304 L COLLARS, SCREWED STAINLESS STEEL 304 L COLLARS
Certifications: NF F 16101, 10/1988 and 16102, 04/1992 (Not applicable)
Material Categorization: For definitions of compliance please see www.vishay.com/doc?99912

Technical Specifications

Model Size	Resistance Range	Rated Power P25 C W	Tolerance %	Approx. Average Unit Weight (g)
RSSD 8 x 34	0.12 to 10	16	5, 10, 20	10
RSSD 10 x 50	0.12 to 22	25	5, 10, 20	22
RSSD 13 x 70	0.12 to 43	42	5, 10, 20	38
RSSD 16 x 94	0.33 to 75	70	5, 10, 20	55
RSSD 20 x 117	0.22 to 100	100	5, 10, 20	80
RSSD 25 x 138	0.10 to 150	140	5, 10, 20	90
RSSD 25 x 168	0.12 to 220	200	5, 10, 20	115
RSSD 30 x 250	0.22 to 360	280	5, 10, 20	240
RSSD 40 x 370	0.47 to 470	450	5, 10, 20	845
RSSD 50 x 373	0.68 to 560	600	5, 10, 20	1270

Performance Tests

Test	Conditions	Requirements	Typical Values and Drifts
Short Time Overload	10 Pr during 5 s	2 %	1 %
Climatic Sequence	-55 C, +200 C 5 cycles	3 %	1 %
Thermal Shock	Load at 100 % Pr followed by cold -55 C / 15	2 % or 0.05	1 %
Load Life	90 / 30 cycle 1000 h at Pr at +25 C	5 %	5 %

Mechanical Specifications

Mechanical Protection: Vishay Sfernice special cement
Resistive Element: Nickel alloy wire
Connections: AN collars, CS supporting collars

Environmental Specifications

Temperature Range: -55 C, +450 C
Climatic Category: -55 C / +200 C / 56 days

Additional Tappings

Tappings can be adjusted by Vishay Sfernice upon request. Advise ohmic values, tolerances of sections, and total Rn. Consult Vishay Sfernice for acceptable tolerance.

Recommendations for Use

Maximum Current Strength: Imax. = sqrt(POWER RATING / Rn)

Marking

Vishay Sfernice trademark, model, style, nominal resistance (in ), tolerance (in %), manufacturing date.

2412091029_VISHAY-RSSD40370C2R20KB02_C17692974.pdf

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