RN65C2500FRE6 Equivalent & Substitute Parts

Part Overview

The RN65C2500FRE6 is a 250 Ohm, 1/2W metal film axial resistor manufactured by Vishay Dale, designed for military applications per MIL-R-10509/2 specification. This component features flame retardant coating, moisture resistance, and safety-rated construction suitable for high-reliability electronic assemblies. The part is currently active in production with 638 units in stock. Substitute parts are identified to address packaging format availability, tolerance requirements, and power rating specifications while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	250 Ohms
Tolerance	±1%
Power Rating	0.5W (1/2W)
Composition	Metal Film
Package Type	Axial
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-65°C to 175°C
Size/Dimension	0.180" Dia x 0.562" L (4.57mm x 14.27mm)
Series	Military, MIL-R-10509/2, RN65
Packaging Format	Tape & Reel (TR)

Substitute Part Grouping Explanation

Substitute parts for RN65C2500FRE6 are qualified based on the following criteria:

Core Electrical Compatibility: All substitute parts maintain the same 250 Ohm resistance value and identical operating temperature range (-65°C to 175°C), ensuring functional equivalence in circuit applications.

Mechanical Compatibility: All substitutes retain the axial package configuration with identical physical dimensions (0.180" Dia x 0.562" L), allowing direct board-level replacement without layout modifications.

Military Series Alignment: Substitutes belong to the same military-grade resistor families (RN65 and RN70 series) under MIL-R-10509 specifications, maintaining safety and reliability standards.

Allowable Parameter Variations:

Tolerance: Substitutes with ±0.1% tolerance provide improved precision over the ±1% specification
Power Rating: RN70E2500BB14 offers 0.75W (3/4W) rating, exceeding the 0.5W requirement
Temperature Coefficient: Substitutes with ±25ppm/°C provide superior stability compared to ±50ppm/°C
Packaging Format: Substitutes available in Bulk and Cut Tape formats in addition to Tape & Reel

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package Type	Packaging Format	Series	Status
RN65C2500FRE6	Vishay Dale	250 Ω	±1%	0.5	±50	-65 to 175	Axial	Tape & Reel	RN65, MIL-R-10509/2	Active
RN65E2500BB14	Vishay Dale	250 Ω	±0.1%	0.5	±25	-65 to 175	Axial	Bulk	RN65, MIL-R-10509/2	Active
RN65E2500FRE6	Vishay Dale	250 Ω	±1%	0.5	±25	-65 to 175	Axial	Cut Tape	RN65, MIL-R-10509/2	Active
RN70E2500BB14	Vishay Dale	250 Ω	±0.1%	0.75	±25	-65 to 175	Axial	Bulk	RN70, MIL-R-10509/3	Active

Engineering Selection Recommendations

All substitute parts maintain active production status with Vishay Dale, ensuring long-term availability and supply chain stability. Selection among substitutes should be based on specific application requirements:

RN65E2500BB14 provides improved tolerance specification (±0.1% versus ±1%) and superior temperature coefficient (±25ppm/°C versus ±50ppm/°C) while maintaining identical power rating and physical dimensions. This substitute is suitable for applications requiring enhanced precision and thermal stability. Bulk packaging format requires consideration for inventory management and component handling procedures.

RN65E2500FRE6 maintains the original ±1% tolerance specification while offering improved temperature coefficient (±25ppm/°C) and identical physical dimensions. Cut Tape packaging provides an intermediate format between Tape & Reel and Bulk options, accommodating various assembly workflows.

RN70E2500BB14 represents a power-rated upgrade to 0.75W (3/4W) with ±0.1% tolerance and ±25ppm/°C temperature coefficient. This substitute is applicable in circuits where thermal margin enhancement is required or where component derating practices necessitate higher power ratings. Physical dimensions remain identical, ensuring mechanical compatibility.

All substitutes comply with identical RoHS non-compliance status, REACH affected designation, and ECCN/HTSUS classifications as the original part, maintaining regulatory consistency.

Frequently Asked Questions (FAQ)

Q: Can RN65E2500BB14 be used as a direct replacement for RN65C2500FRE6?

A: Yes. Both parts share identical 250 Ohm resistance, 0.5W power rating, axial package configuration, and physical dimensions (0.180" Dia x 0.562" L). The primary differences are tolerance (±0.1% versus ±1%), temperature coefficient (±25ppm/°C versus ±50ppm/°C), and packaging format (Bulk versus Tape & Reel). Electrical and mechanical compatibility is maintained.

Q: What is the difference between RN65E2500FRE6 and RN65C2500FRE6?

A: Both parts are 250 Ohm, 0.5W axial resistors with identical physical dimensions and ±1% tolerance. The primary distinction is temperature coefficient: RN65E2500FRE6 offers ±25ppm/°C compared to ±50ppm/°C for RN65C2500FRE6. Packaging format differs (Cut Tape versus Tape & Reel). Electrical performance in standard applications is equivalent.

Q: Is RN70E2500BB14 suitable for circuits designed for 0.5W resistors?

A: Yes. RN70E2500BB14 is a 0.75W-rated component with identical 250 Ohm resistance and axial package dimensions. The higher power rating provides additional thermal margin and is mechanically compatible with board layouts designed for 0.5W resistors. Circuit performance remains unchanged; the upgrade provides enhanced reliability margin.

Q: What packaging format should be selected for high-volume assembly?

A: Tape & Reel (RN65C2500FRE6) and Cut Tape (RN65E2500FRE6) formats are optimized for automated pick-and-place assembly. Bulk packaging (RN65E2500BB14, RN70E2500BB14) is suitable for manual assembly or lower-volume applications. Selection depends on assembly equipment capabilities and production volume requirements.

Q: Are all substitute parts qualified to MIL-R-10509 specifications?

A: Yes. RN65E2500BB14 and RN65E2500FRE6 are qualified to MIL-R-10509/2. RN70E2500BB14 is qualified to MIL-R-10509/3. All parts maintain military-grade construction with flame retardant coating, moisture resistance, and safety-rated design suitable for high-reliability applications.

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