RER45F1400RC02 Equivalent & Substitute Parts

Part Overview

The RER45F1400RC02 is a 140 Ohms ±1% 10W wirewound chassis mount resistor manufactured by Vishay Dale, part of the Military MIL-PRF-39009 RER45 series. This component is designed for applications requiring precision resistive elements with high power dissipation capability and military-grade reliability. The part is currently active in production with 963 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling component interchangeability in circuit designs where the primary part becomes unavailable or when alternative series options are preferred.

Substiute Parts

RER45F1400RC02

Vishay DaleIn Stock: 1048RER45F1400RC02 Datasheet

Current PartRFQ

RER65F1400RC02

Vishay DaleIn Stock: 939RER65F1400RC02 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RER45F1400RC02 is determined by strict equivalence across the following critical parameters:

• Resistance value: 140 Ohms
• Tolerance: ±1%
• Power rating: 10W
• Composition: Wirewound
• Temperature coefficient: ±20ppm/°C
• Operating temperature range: -55°C ~ 250°C
• Housing type: Aluminum
• Mounting feature: Flanges
• Lead style: Solder Lugs
• Package type: Axial, Box
• Failure rate: R (0.01%)
• Military compliance: MIL-PRF-39009

The RER65F1400RC02 meets all substitution criteria as a parametric equivalent within the Vishay Dale military resistor portfolio. Both components share identical electrical specifications and mechanical dimensions, differing only in series designation (RER45 versus RER65) while maintaining full compatibility with the original design requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the RER45F1400RC02 and RER65F1400RC02 are active production components with identical electrical and mechanical specifications. Selection between these parts should be based on availability and supply chain requirements. Both components maintain military-grade reliability with R-series failure rates (0.01%) and are classified under the same ECCN (EAR99) and HTSUS codes. Neither component is RoHS compliant, and both carry MSL rating 1 (Unlimited moisture sensitivity level). The RER45F1400RC02 currently has 963 units in stock, while the RER65F1400RC02 has 878 units available. For applications requiring military specification compliance under MIL-PRF-39009, either part satisfies the design requirements without modification to circuit topology or thermal management strategies.

Frequently Asked Questions (FAQ)

Q: Can the RER65F1400RC02 be used as a direct replacement for the RER45F1400RC02?

A: Yes. Both components are parametric equivalents with identical resistance, tolerance, power rating, temperature coefficient, operating temperature range, physical dimensions, and mounting configuration. The series designation difference (RER45 versus RER65) does not affect electrical or mechanical compatibility.

Q: Are there any differences in reliability or failure rate between these parts?

A: No. Both components carry the same R-series failure rate classification (0.01%) and are manufactured to identical military specifications under MIL-PRF-39009.

Q: Do these parts have the same physical footprint?

A: Yes. Both components share identical dimensions: 0.750" L x 0.800" W (19.05mm x 20.32mm) with a maximum seated height of 0.405" (10.29mm). They use identical flanged mounting features and solder lug lead styles, ensuring direct mechanical interchangeability on PCBs and chassis assemblies.

Q: What is the significance of the ±1% tolerance specification?

A: The ±1% tolerance indicates that the actual resistance value will not deviate more than 1% from the nominal 140 Ohm specification. This tight tolerance is suitable for precision circuit applications where resistive accuracy directly impacts circuit performance.

Q: Are these components suitable for high-temperature applications?

A: Yes. Both components are rated for continuous operation across the -55°C to 250°C temperature range with a temperature coefficient of ±20ppm/°C, making them suitable for military and aerospace applications requiring extended thermal operating windows.

Q: What does the aluminum housing type indicate?

A: The aluminum housing provides thermal conductivity for efficient heat dissipation during the 10W power dissipation operation. The flanged mounting design allows direct attachment to heat sinks or chassis surfaces for enhanced thermal management.

Q: Are these parts RoHS compliant?

A: No. Both the RER45F1400RC02 and RER65F1400RC02 are classified as RoHS non-compliant. Applications requiring RoHS compliance must identify alternative components from the Vishay Dale portfolio or other manufacturers.