RNF12FTD1K50 Equivalent & Substitute Parts

Part Overview

The RNF12FTD1K50 is a 1.5 kOhms ±1% metal film through-hole resistor rated at 0.5W (1/2W) in axial package configuration. Manufactured by Stackpole Electronics Inc, this component features flame retardant coating and safety-rated construction suitable for industrial and commercial applications. The part maintains Active product status with ROHS3 compliance and REACH unaffected certification.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit functional equivalents with identical electrical specifications and compatible mechanical form factors.

Substiute Parts

RNF12FTD1K50

Stackpole Electronics IncIn Stock: 806RNF12FTD1K50 Datasheet

Current PartRFQ

RNMF12FTD1K50

Stackpole Electronics IncIn Stock: 5709RNMF12FTD1K50 Datasheet

MFR RecommendedRFQ

CMF551K5000FKEB

Vishay DaleIn Stock: 5893CMF551K5000FKEB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RNF12FTD1K50 is determined by strict equivalence across the following critical parameters:

• Resistance value: 1.5 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: ±100ppm/°C (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected (minimum requirement)

The identified substitute parts meet all electrical specifications and mechanical compatibility requirements. Physical dimensions may vary within acceptable tolerances for axial package resistors without affecting circuit performance or PCB layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status with full ROHS3 compliance and REACH unaffected certification, ensuring regulatory compatibility across industrial and commercial applications.

RNMF12FTD1K50 (Stackpole Mini series) provides direct electrical equivalence with reduced physical dimensions, enabling space-constrained PCB layouts while maintaining identical electrical performance and temperature stability.

CMF551K5000FKEB (Vishay Dale) offers equivalent electrical specifications with extended operating temperature range to 175°C and integrated moisture resistance features, suitable for applications requiring enhanced environmental protection beyond the base -55°C to 155°C specification.

Selection between substitutes depends on PCB layout constraints and environmental operating conditions. All parts satisfy the core electrical and mechanical requirements for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can RNMF12FTD1K50 replace RNF12FTD1K50 in existing designs?

A: Yes. Both parts share identical electrical specifications (1.5 kOhms ±1%, 0.5W, ±100ppm/°C, -55°C to 155°C). The RNMF series features reduced physical dimensions (0.093" Dia x 0.250" L versus 0.108" Dia x 0.344" L), which may require PCB layout verification for lead spacing and component clearance.

Q: What is the primary difference between CMF551K5000FKEB and the Stackpole options?

A: CMF551K5000FKEB maintains identical electrical performance but extends the maximum operating temperature to 175°C and includes moisture resistance features. The physical dimensions are also reduced (0.090" Dia x 0.240" L). Selection depends on environmental requirements and PCB layout constraints.

Q: Are all three parts suitable for high-reliability applications?

A: All three parts carry ROHS3 compliance, REACH unaffected status, and Active product designation. Regulatory compliance is equivalent across all options. Application-specific reliability requirements should be evaluated against individual design specifications.

Q: Do physical dimension differences affect circuit performance?

A: No. Physical dimensions do not alter electrical performance. Differences in lead diameter and length may affect PCB layout routing and component spacing. Verify lead-to-lead distance compatibility with existing PCB footprints before substitution.

Q: Which substitute offers the best thermal performance?

A: CMF551K5000FKEB provides the widest operating temperature range (-55°C to 175°C) and includes moisture resistance. For applications operating above 155°C, this part is the appropriate selection.