RWR80S75R0FSB12 Equivalent & Substitute Parts

Part Overview

The RWR80S75R0FSB12 is a 75 Ohm, 2W wirewound axial resistor manufactured by Vishay Dale, designed for military applications per MIL-PRF-39007 specifications. This component features moisture-resistant construction and operates across an extended temperature range of -55°C to 250°C. The part is currently active in production with 824 units in stock. Substitute parts are identified when electrical specifications, mechanical dimensions, and military qualification requirements remain identical across alternative manufacturer part numbers.

Substiute Parts

RWR80S75R0FSB12

Vishay DaleIn Stock: 928RWR80S75R0FSB12 Datasheet

Current PartRFQ

RWR80S75R0FRB12

Vishay DaleIn Stock: 1173RWR80S75R0FRB12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RWR80S75R0FSB12 is determined by strict equivalence across the following parameters:

• Resistance value: 75 Ohms
• Tolerance: ±1%
• Power rating: 2W
• Composition: Wirewound
• Package: Axial
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C to 250°C
• Military qualification: MIL-PRF-39007, RWR80S series
• Physical dimensions: 0.094" Dia x 0.406" L
• Number of terminations: 2

The RWR80S75R0FRB12 meets all substitution criteria. Differences in failure rate classification and inventory levels do not affect functional or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the RWR80S75R0FSB12 and RWR80S75R0FRB12 are active production components from Vishay Dale with identical electrical and mechanical specifications. Selection between these parts should be based on failure rate requirements and inventory availability. The RWR80S75R0FSB12 carries a failure rate classification of S (0.001%), while the RWR80S75R0FRB12 carries a classification of R (0.01%). Both parts maintain RoHS non-compliant and REACH Affected status. For applications requiring the lowest failure rate specification, the RWR80S75R0FSB12 is the primary choice. The RWR80S75R0FRB12 serves as a direct functional equivalent when the higher failure rate classification is acceptable.

Frequently Asked Questions (FAQ)

Q: Can RWR80S75R0FRB12 be used as a direct replacement for RWR80S75R0FSB12?

A: Yes. Both parts are electrically and mechanically identical, with matching resistance, tolerance, power rating, temperature coefficient, and operating temperature range. The difference in failure rate classification does not affect functional compatibility.

Q: What is the significance of the failure rate difference between these parts?

A: Failure rate classification indicates the expected percentage of component failures per 1,000 hours of operation under specified conditions. The RWR80S75R0FSB12 (S classification, 0.001%) has a lower failure rate than the RWR80S75R0FRB12 (R classification, 0.01%). Selection depends on application reliability requirements.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.094" diameter by 0.406" length (2.39mm x 10.31mm) and use axial packaging, ensuring identical PCB footprint and mounting compatibility.

Q: Do both parts meet military specifications?

A: Yes. Both the RWR80S75R0FSB12 and RWR80S75R0FRB12 are qualified to MIL-PRF-39007 and belong to the RWR80S military series with moisture-resistant construction.

Q: What compliance certifications apply to these parts?

A: Both parts are RoHS non-compliant and REACH Affected. Verify compliance requirements for your specific application before selection.