RN55D7500FRE6 Equivalent & Substitute Parts

Part Overview

The RN55D7500FRE6 is a 750 Ohm, 1/8W metal film axial resistor manufactured by Vishay Dale, designed for military and high-reliability applications. This part features ±1% tolerance, flame retardant coating, and moisture resistance, meeting MIL-R-10509/7 specifications. The component is currently active in production with 1184 units in stock. Substitute parts are identified when packaging, inventory, or tolerance requirements necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

RN55D7500FRE6

Vishay DaleIn Stock: 1218RN55D7500FRE6 Datasheet

Current PartRFQ

RN55E7500BB14

Vishay DaleIn Stock: 832RN55E7500BB14 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN55D7500FRE6 is determined by the following critical parameters:

• Resistance Value: Must be 750 Ohms
• Power Rating: Must be 0.125W (1/8W)
• Package Type: Must be Axial
• Physical Dimensions: Must be 0.090" Dia x 0.240" L (2.29mm x 6.10mm)
• Composition: Must be Metal Film
• Series Compliance: Must conform to MIL-R-10509/7 and RN55 base product specifications
• Operating Temperature Range: Must support -65°C to 175°C

The RN55E7500BB14 qualifies as a substitute because it maintains all critical electrical and mechanical parameters. Variations in tolerance (±0.1% vs ±1%), temperature coefficient (±25ppm/°C vs ±100ppm/°C), and packaging format (Bulk vs Cut Tape) do not prevent substitution when the primary electrical and mechanical requirements are met.

Parameter Comparison

Engineering Selection Recommendations

Both the RN55D7500FRE6 and RN55E7500BB14 are active production components from Vishay Dale, conforming to MIL-R-10509/7 military specifications. Selection between these parts should be based on:

• Packaging Requirements: The RN55D7500FRE6 is supplied in Cut Tape format, suitable for automated assembly. The RN55E7500BB14 is supplied in Bulk format, appropriate for manual assembly or alternative handling processes.
• Tolerance Specifications: The RN55E7500BB14 offers ±0.1% tolerance compared to the ±1% tolerance of the RN55D7500FRE6. Applications requiring tighter tolerance control benefit from the substitute part.
• Temperature Stability: The RN55E7500BB14 provides superior temperature coefficient performance (±25ppm/°C vs ±100ppm/°C), advantageous in temperature-sensitive circuit designs.
• Inventory Availability: Current stock levels are 1184 units for RN55D7500FRE6 and 729 units for RN55E7500BB14. Selection may depend on procurement lead time and supply chain requirements.

Both parts maintain identical electrical performance in circuits designed for the RN55D7500FRE6 specifications.

Frequently Asked Questions (FAQ)

Q: Can RN55E7500BB14 be used as a direct replacement for RN55D7500FRE6?

A: Yes. Both parts share identical resistance value (750 Ohms), power rating (1/8W), physical dimensions (0.090" Dia x 0.240" L), and operating temperature range (-65°C to 175°C). The RN55E7500BB14 meets or exceeds all electrical specifications of the RN55D7500FRE6.

Q: What is the difference between Cut Tape and Bulk packaging?

A: Cut Tape (CT) packaging is pre-cut and typically used for automated pick-and-place assembly equipment. Bulk packaging contains loose components suitable for manual assembly or alternative handling methods. Electrical performance is identical; packaging format affects assembly process compatibility only.

Q: Does the tighter tolerance of RN55E7500BB14 affect circuit compatibility?

A: No. The ±0.1% tolerance of RN55E7500BB14 is a subset of the ±1% tolerance specification of RN55D7500FRE6. Circuits designed for ±1% tolerance operate within specification with the tighter tolerance substitute.

Q: Are both parts RoHS compliant?

A: Both RN55D7500FRE6 and RN55E7500BB14 are RoHS non-compliant. Both are REACH Affected and classified under ECCN EAR99.

Q: What is the significance of the temperature coefficient difference?

A: Temperature coefficient measures resistance change over temperature range. RN55E7500BB14 exhibits ±25ppm/°C compared to ±100ppm/°C for RN55D7500FRE6. In applications operating across the full -65°C to 175°C range, the substitute part provides superior stability and predictability.