Equivalent & Substitute Parts for RN65D2490FRE6

Part Overview

The RN65D2490FRE6 is a 249 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 1046 units in stock. Alternative part numbers within the RN65 series are available to accommodate different packaging requirements and temperature coefficient specifications while maintaining core electrical and mechanical compatibility.

Substiute Parts

RN65D2490FRE6

Vishay DaleIn Stock: 1146RN65D2490FRE6 Datasheet

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RN65D2490FB14

Vishay DaleIn Stock: 982RN65D2490FB14 Datasheet

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RN65C2490FB14

Vishay DaleIn Stock: 786RN65C2490FB14 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution within the RN65D2490FRE6 family is determined by the following allowable parameters:

• Resistance value: 249 Ohms (fixed)
• Tolerance: ±1% (fixed)
• Power rating: 0.5W / 1/2W (fixed)
• Composition: Metal Film (fixed)
• Package type: Axial (fixed)
• Physical dimensions: 0.180" Dia x 0.562" L (fixed)
• Operating temperature range: -65°C ~ 175°C (fixed)
• Military specification compliance: MIL-R-10509/2 (fixed)

Substitute parts are grouped by packaging configuration (Tape & Reel versus Bulk) and temperature coefficient specification. The RN65D2490FB14 and RN65C2490FB14 maintain identical electrical and mechanical parameters as the main part, with differences limited to packaging format and temperature coefficient performance.

Parameter Comparison

Engineering Selection Recommendations

All three part numbers are active products manufactured by Vishay Dale and comply with MIL-R-10509/2 military specification. Selection between RN65D2490FRE6, RN65D2490FB14, and RN65C2490FB14 is determined by packaging requirements and temperature coefficient tolerance needs.

RN65D2490FRE6 is supplied in Tape & Reel format, suitable for automated assembly processes. RN65D2490FB14 and RN65C2490FB14 are supplied in Bulk packaging, appropriate for manual assembly or alternative handling methods.

RN65C2490FB14 provides improved temperature coefficient performance at ±50ppm/°C compared to the ±100ppm/°C specification of RN65D2490FRE6 and RN65D2490FB14. This enhanced stability is applicable to circuits requiring tighter resistance value maintenance across the full operating temperature range.

All parts maintain identical RoHS non-compliant status, REACH affected designation, and ECCN/HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can RN65D2490FB14 be used as a direct substitute for RN65D2490FRE6?

A: Yes. Both parts share identical electrical specifications (249 Ohms, ±1%, 0.5W, ±100ppm/°C) and mechanical dimensions (0.180" Dia x 0.562" L). The primary difference is packaging format: RN65D2490FRE6 is supplied in Tape & Reel, while RN65D2490FB14 is supplied in Bulk. Substitution is valid when bulk packaging is acceptable for the assembly process.

Q: What is the difference between RN65D2490FB14 and RN65C2490FB14?

A: Both parts are supplied in Bulk packaging with identical resistance, tolerance, power rating, and physical dimensions. The distinction is temperature coefficient: RN65D2490FB14 specifies ±100ppm/°C, while RN65C2490FB14 specifies ±50ppm/°C. RN65C2490FB14 provides superior temperature stability for applications requiring tighter resistance tolerance across the -65°C to 175°C operating range.

Q: Are these parts interchangeable in PCB assembly?

A: Yes, all three parts are axial through-hole resistors with identical physical dimensions (0.180" Dia x 0.562" L). They are mechanically and electrically interchangeable on PCBs designed for 249 Ohm, 1/2W, ±1% metal film resistors. Packaging format differences (Tape & Reel versus Bulk) affect only the supply and handling method, not board-level compatibility.

Q: Do all substitute parts meet the same military specification?

A: Yes. RN65D2490FRE6, RN65D2490FB14, and RN65C2490FB14 all comply with MIL-R-10509/2 military specification and are part of the RN65 series. All maintain identical flame retardant coating, moisture resistance, and safety features required for military applications.

Q: Which part should be selected for temperature-critical applications?

A: RN65C2490FB14 is the appropriate selection for circuits requiring maximum temperature stability. Its ±50ppm/°C temperature coefficient provides half the drift rate of RN65D2490FRE6 and RN65D2490FB14 across the full -65°C to 175°C operating range, resulting in more stable resistance values in temperature-sensitive analog circuits.