RNF12FTC6K65 Equivalent & Substitute Parts

Part Overview

The RNF12FTC6K65 is a 6.65 kOhms ±1% 0.5W through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal film resistor features flame retardant coating and safety construction, designed for applications requiring precision resistance values with stable performance across industrial temperature ranges. The part maintains Active product status with 786 units in current inventory. Substitute parts are identified to address supply chain continuity, packaging format preferences, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RNF12FTC6K65

Stackpole Electronics IncIn Stock: 796RNF12FTC6K65 Datasheet

Current PartRFQ

CMF556K6500FHEB

Vishay DaleIn Stock: 1779CMF556K6500FHEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC6K65 are qualified based on the following electrical and mechanical parameters:

• Resistance value: 6.65 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The CMF556K6500FHEB from Vishay Dale meets all electrical specifications and regulatory requirements. Physical dimensions differ slightly, and operating temperature range extends to 175°C (versus 155°C for the primary part). Packaging format differs (Cut Tape versus Tape & Reel), which may affect procurement and assembly workflows.

Parameter Comparison

Engineering Selection Recommendations

Both the RNF12FTC6K65 and CMF556K6500FHEB are Active status products with ROHS3 compliance and REACH Unaffected certification. Selection between these parts should be based on:

Packaging format requirements: The RNF12FTC6K65 is supplied in Tape & Reel format, while the CMF556K6500FHEB is supplied in Cut Tape format. Assembly line automation and component handling procedures may dictate packaging preference.

Physical dimensions: The CMF556K6500FHEB features a smaller axial profile (0.090" diameter, 0.240" length) compared to the RNF12FTC6K65 (0.108" diameter, 0.344" length). PCB layout constraints or mechanical clearance requirements may influence selection.

Temperature margin: The CMF556K6500FHEB operates to 175°C, providing 20°C additional margin above the RNF12FTC6K65 specification of 155°C. Applications with elevated ambient or self-heating considerations may benefit from this extended range.

Inventory availability: Current stock levels differ (786 units for RNF12FTC6K65 versus 1765 units for CMF556K6500FHEB), which may impact procurement lead times.

Frequently Asked Questions (FAQ)

Q: Can the CMF556K6500FHEB directly replace the RNF12FTC6K65 in existing designs?

A: Yes, from an electrical standpoint. Both parts share identical resistance (6.65 kOhms), tolerance (±1%), power rating (0.5W), composition (metal film), and temperature coefficient (±50ppm/°C). Physical dimensions differ, so PCB layout verification is required. Packaging format differs (Cut Tape versus Tape & Reel), which may require assembly process adjustment.

Q: What are the key differences between these two parts?

A: The primary differences are physical dimensions, operating temperature upper limit (175°C versus 155°C), packaging format (Cut Tape versus Tape & Reel), and manufacturer. All electrical specifications and regulatory compliance are identical.

Q: Are both parts suitable for high-temperature applications?

A: The CMF556K6500FHEB supports operation to 175°C, while the RNF12FTC6K65 is rated to 155°C. For applications approaching or exceeding 155°C ambient or with significant self-heating, the CMF556K6500FHEB provides additional thermal margin.

Q: Does the smaller physical size of the CMF556K6500FHEB affect performance?

A: No. The smaller axial profile does not impact electrical performance. Both parts maintain identical resistance tolerance, temperature coefficient, and power dissipation characteristics. Size difference is a manufacturing variation between manufacturers and may affect PCB layout and mechanical fit only.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the RNF12FTC6K65 and CMF556K6500FHEB are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components.