RNF12FTC32K4 Equivalent & Substitute Parts

Part Overview

The RNF12FTC32K4 is a 32.4 kOhms ±1% metal film axial through-hole resistor rated at 0.5W (1/2W) manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety construction, designed for applications requiring precision resistance values with stable performance across industrial temperature ranges. The part is currently in active production status with 933 units available in stock.

Substitute parts are identified to provide design flexibility, supply chain alternatives, and equivalent electrical performance for applications where the original part may be unavailable or where alternative packaging formats are preferred.

Substiute Parts

RNF12FTC32K4

Stackpole Electronics IncIn Stock: 952RNF12FTC32K4 Datasheet

Current PartRFQ

CMF5532K400FHEB

Vishay DaleIn Stock: 1954CMF5532K400FHEB Datasheet

MFR RecommendedRFQ

CMF5532K400FHEK

Vishay DaleIn Stock: 1249CMF5532K400FHEK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF12FTC32K4 are qualified based on the following electrical and mechanical parameters:

• Resistance value: 32.4 kOhms (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)
• Features: Flame Retardant Coating, Safety (minimum requirement)

The identified substitutes are Vishay Dale CMF series resistors (CMF5532K400FHEB and CMF5532K400FHEK), which meet all core electrical specifications and maintain compatibility with axial through-hole PCB designs. Both substitute parts provide additional moisture resistance capability beyond the original specification.

Parameter Comparison

Engineering Selection Recommendations

All three parts meet the core electrical requirements for 32.4 kOhms ±1% metal film axial resistors with 0.5W power rating and ±50ppm/°C temperature coefficient. Selection between the RNF12FTC32K4 and its substitutes should be based on the following factors:

RNF12FTC32K4 (Stackpole Electronics Inc): Primary choice when Tape & Reel packaging is required for automated assembly processes. Operates within -55°C to 155°C range. ROHS3 compliant and REACH unaffected.

CMF5532K400FHEB (Vishay Dale, Cut Tape): Suitable for applications requiring extended operating temperature range (-55°C to 175°C) and moisture resistance. Cut Tape packaging accommodates semi-automated or manual assembly. ROHS3 compliant and REACH unaffected.

CMF5532K400FHEK (Vishay Dale, Bulk): Appropriate for high-volume applications or where bulk packaging reduces component cost. Provides extended operating temperature range (-55°C to 175°C) and moisture resistance. ROHS3 compliant. Note: REACH status is affected for this variant.

Physical dimensions differ between the Stackpole part (0.108" Dia x 0.344" L) and Vishay Dale substitutes (0.090" Dia x 0.240" L). PCB layout verification is necessary to confirm mechanical fit within available board space.

Frequently Asked Questions (FAQ)

Q: Can CMF5532K400FHEB and CMF5532K400FHEK be used interchangeably with RNF12FTC32K4?

A: Both Vishay Dale parts are electrically equivalent to the RNF12FTC32K4, meeting identical resistance, tolerance, power rating, and temperature coefficient specifications. Substitution is valid from an electrical standpoint. However, physical dimensions differ, requiring PCB layout verification. Packaging format differences (Cut Tape vs. Bulk vs. Tape & Reel) affect assembly process compatibility.

Q: What is the difference between CMF5532K400FHEB and CMF5532K400FHEK?

A: Both parts are identical in electrical specifications and physical dimensions. The primary differences are packaging format (Cut Tape vs. Bulk) and REACH compliance status. CMF5532K400FHEB is REACH unaffected, while CMF5532K400FHEK is REACH affected. Select based on assembly process requirements and regulatory compliance needs.

Q: Are the physical dimension differences between RNF12FTC32K4 and CMF substitutes critical?

A: The Stackpole RNF12FTC32K4 measures 0.108" Dia x 0.344" L, while Vishay Dale CMF parts measure 0.090" Dia x 0.240" L. The CMF parts are smaller in both diameter and length. PCB layout must be verified to ensure the substitute component fits within the available mounting space and does not create clearance issues with adjacent components.

Q: Do all three parts meet RoHS and REACH requirements?

A: All three parts are ROHS3 compliant. For REACH compliance, RNF12FTC32K4 and CMF5532K400FHEB are REACH unaffected. CMF5532K400FHEK is REACH affected. Verify regulatory requirements for your specific application before selecting a substitute.

Q: What is the operating temperature advantage of the Vishay Dale substitutes?

A: The RNF12FTC32K4 operates from -55°C to 155°C. Both Vishay Dale CMF substitutes extend the upper operating limit to 175°C, providing a 20°C margin for high-temperature applications. The lower temperature limit remains -55°C for all three parts.

Q: Are moisture resistance features important for my application?

A: The RNF12FTC32K4 includes flame retardant coating and safety features. The Vishay Dale CMF substitutes add moisture resistance capability. In humid or moisture-prone environments, the additional moisture resistance of CMF parts may provide enhanced reliability. For standard indoor applications, this feature difference is not critical.