High power wirewound resistor VISHAY RSSD25168C1500JB04 featuring adjustable collars and robust construction

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Product Description

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 complement existing Vishay styles in the low ohmic value range and feature adjustable collars for custom tapping. Ideal for applications requiring high power dissipation, robustness, and long-term stability.

Product Attributes

Brand: Vishay Sfernice
Material: WELDED STAINLESS STEEL 304 L (Collars), SCREWED STAINLESS STEEL 304 L (Collars)
Mechanical Protection: Vishay Sfernice special cement
Resistive Element: Nickel alloy wire
Connections: AN collars, CS supporting collars
Certifications: NF F 16101, 10/1988 and 16102, 04/1992 (Not applicable)
Material Categorization: Refer to 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 min	2 % or 0.05	1 %
Load Life	90 / 30 cycle, 1000 h at Pr at +25 C	5 %	5 %