RWR89N1R00FSB12 Equivalent & Substitute Parts

Part Overview

The RWR89N1R00FSB12 is a 1 Ohm, 3W wirewound axial resistor manufactured by Vishay Dale, designed for military applications per MIL-PRF-39007 specification. This component features moisture-resistant construction and non-inductive design, suitable for high-reliability through-hole applications in temperature-controlled environments. The part maintains Active product status with 776 units in current inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same military specification series.

Substiute Parts

RWR89N1R00FSB12

Vishay DaleIn Stock: 884RWR89N1R00FSB12 Datasheet

Current PartRFQ

RWR89S1R00FSB12

Vishay DaleIn Stock: 1125RWR89S1R00FSB12 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The RWR89S1R00FSB12 qualifies as a parametric equivalent to the RWR89N1R00FSB12 based on strict alignment of the following critical parameters:

• Resistance value: 1 Ohms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Temperature coefficient: ±400ppm/°C
• Operating temperature range: -55°C ~ 250°C
• Package configuration: Axial
• Physical dimensions: 0.187" Dia x 0.560" L (4.75mm x 14.22mm)
• Termination count: 2
• Military specification compliance: MIL-PRF-39007
• Failure rate classification: S (0.001%)

Both parts are manufactured by Vishay Dale within the RWR89 military resistor series. The substitution is valid where the primary difference is the internal construction variant (RWR89N versus RWR89S), with the RWR89S variant omitting the non-inductive feature specification while maintaining all other electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the RWR89N1R00FSB12 and RWR89S1R00FSB12 maintain Active product status with full MIL-PRF-39007 military specification compliance. Selection between these parts should be based on application-specific requirements regarding inductive characteristics. The RWR89N variant includes explicit non-inductive design specification, while the RWR89S variant does not specify this feature. For applications where inductive behavior must be minimized, the RWR89N1R00FSB12 is the specified choice. Both parts carry identical RoHS non-compliant and REACH Affected designations, with EAR99 export classification. Current inventory availability favors the RWR89S1R00FSB12 with 1034 units in stock compared to 776 units for the RWR89N variant.

Frequently Asked Questions (FAQ)

Q: What determines if RWR89S1R00FSB12 can substitute for RWR89N1R00FSB12?

A: Substitution is valid when all electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical parameters (package type, physical dimensions, termination count) are identical. Both parts meet these criteria. The primary distinction is the non-inductive feature specification present in the RWR89N variant.

Q: Are there any compliance differences between these parts?

A: No. Both parts share identical RoHS status (non-compliant), REACH status (Affected), and ECCN classification (EAR99). Military specification compliance (MIL-PRF-39007) and failure rate classification (S, 0.001%) are equivalent.

Q: Can these parts be used interchangeably in all applications?

A: Interchangeability depends on application requirements for inductive behavior. Applications requiring non-inductive performance must use the RWR89N1R00FSB12. Applications without specific inductive constraints can use either variant.

Q: What is the physical compatibility between these parts?

A: Both parts are identical in package configuration (Axial) and physical dimensions (0.187" Dia x 0.560" L / 4.75mm x 14.22mm), ensuring direct mechanical compatibility in through-hole PCB layouts.

Q: Are both parts currently available?

A: Yes. Both parts maintain Active product status. The RWR89S1R00FSB12 has higher current inventory (1034 units) compared to the RWR89N1R00FSB12 (776 units).