RNF12FTC82R5 Equivalent & Substitute Parts

Part Overview

The RNF12FTC82R5 is a 82.5 Ohms ±1% 0.5W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values in compact form factors. The part is currently active in production with 784 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit component flexibility within specified electrical and mechanical parameters.

Substiute Parts

RNF12FTC82R5

Stackpole Electronics IncIn Stock: 804RNF12FTC82R5 Datasheet

Current PartRFQ

CMF5582R500FHEB

Vishay DaleIn Stock: 847CMF5582R500FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTC82R5 is determined by strict equivalence across the following critical parameters:

• Resistance value: 82.5 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Metal Film (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Package type: Axial (exact match required)
• Compliance: ROHS3 Compliant (minimum requirement)

The CMF5582R500FHEB from Vishay Dale meets all critical electrical parameters and compliance requirements. Physical dimensions differ slightly, but both parts maintain axial package configuration suitable for through-hole PCB assembly. Operating temperature range extends to 175°C for the substitute part, providing enhanced thermal performance within the same electrical specification class.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC82R5 and CMF5582R500FHEB are active production components with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

Electrical equivalence is confirmed across all specified parameters. The CMF5582R500FHEB provides an extended operating temperature range to 175°C compared to 155°C for the RNF12FTC82R5, offering additional thermal margin in high-temperature applications.

Physical dimensions differ, with the CMF5582R500FHEB being more compact. PCB layout and mechanical clearance requirements must be evaluated to confirm fit within the target assembly. The CMF5582R500FHEB includes moisture resistance as an additional feature, beneficial for applications in humid or corrosive environments.

Packaging format differs: RNF12FTC82R5 is supplied in Tape & Reel format, while CMF5582R500FHEB is supplied in Cut Tape format. Production volume and assembly automation requirements should guide packaging selection.

Frequently Asked Questions (FAQ)

Q: Can CMF5582R500FHEB replace RNF12FTC82R5 in all applications?

A: Yes, provided PCB layout accommodates the smaller physical dimensions (0.090" Dia x 0.240" L versus 0.108" Dia x 0.344" L). Electrical performance is equivalent across all specified parameters.

Q: What is the significance of the extended operating temperature range in the CMF5582R500FHEB?

A: The CMF5582R500FHEB operates to 175°C versus 155°C for the RNF12FTC82R5. This provides additional thermal headroom in applications approaching the upper temperature limit, though both parts meet the same electrical specifications within their respective ranges.

Q: Are there compliance differences between these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: How do packaging formats affect component selection?

A: RNF12FTC82R5 is supplied in Tape & Reel format suitable for high-volume automated assembly. CMF5582R500FHEB is supplied in Cut Tape format, typically used for lower volumes or manual assembly. Procurement and assembly process requirements should guide selection.

Q: Does the moisture resistance feature of CMF5582R500FHEB provide additional value?

A: Moisture resistance is an additional feature in the CMF5582R500FHEB not specified for the RNF12FTC82R5. This may provide benefits in applications exposed to humidity or condensation, though both parts meet the same electrical specifications.