RNF14FAD29K4 Equivalent & Substitute Parts

Part Overview

The RNF14FAD29K4 is a 29.4 kOhms ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial package configuration, manufactured by Stackpole Electronics Inc. This component features flame retardant coating and safety-grade construction, designed for applications requiring precision resistance values with reliable performance across industrial temperature ranges. The part is currently Active in product status with 1186 units in stock. Equivalent and substitute parts are identified to provide procurement flexibility, alternative packaging options, and enhanced performance characteristics where applicable.

Substiute Parts

RNF14FAD29K4

Stackpole Electronics IncIn Stock: 1283RNF14FAD29K4 Datasheet

Current PartRFQ

RNF14FTD29K4

Stackpole Electronics IncIn Stock: 12231RNF14FTD29K4 Datasheet

DirectRFQ

CMF5529K400FHEB

Vishay DaleIn Stock: 2807CMF5529K400FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAD29K4 are classified based on the following critical parameters that determine functional equivalence:

Direct Equivalent Criteria:

• Resistance value: 29.4 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Film (exact match required)
• Package: Axial through-hole (exact match required)
• Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

Upgrade Criteria:

• Higher power rating (0.5W vs. 0.25W) with identical resistance and tolerance
• Improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C)
• Extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C)
• Enhanced moisture resistance features
• Same axial package configuration and compliance standards

The RNF14FTD29K4 represents a direct equivalent with identical electrical specifications but different packaging (Cut Tape vs. Tape & Box). The CMF5529K400FHEB represents an upgrade option with enhanced performance characteristics while maintaining core electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

RNF14FTD29K4 (Direct Equivalent): Select this part when packaging format is the primary consideration. This substitute maintains identical electrical specifications and operating characteristics as the RNF14FAD29K4. The difference lies in packaging format (Cut Tape vs. Tape & Box), making it suitable for high-volume automated assembly processes. Both parts carry Active product status and full ROHS3 compliance with REACH Unaffected certification.

CMF5529K400FHEB (Upgrade Option): Select this part when enhanced performance margins are required. The CMF5529K400FHEB provides doubled power dissipation capacity (0.5W vs. 0.25W), superior temperature coefficient stability (±50ppm/°C vs. ±100ppm/°C), and extended operating temperature range to 175°C. Additional moisture resistance features provide enhanced reliability in humid environments. This upgrade maintains identical resistance and tolerance specifications while offering improved thermal and environmental performance. All compliance certifications (ROHS3, REACH Unaffected) are maintained.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD29K4 be used as a direct replacement for RNF14FAD29K4?

A: Yes. Both parts are electrically identical with matching resistance (29.4 kOhms), tolerance (±1%), power rating (0.25W), temperature coefficient (±100ppm/°C), and operating range (-55°C ~ 155°C). The only difference is packaging format: RNF14FAD29K4 uses Tape & Box while RNF14FTD29K4 uses Cut Tape. Selection depends on assembly process requirements.

Q: What are the advantages of using CMF5529K400FHEB over RNF14FAD29K4?

A: The CMF5529K400FHEB offers three primary advantages: (1) doubled power rating (0.5W vs. 0.25W) for applications with higher dissipation requirements, (2) improved temperature coefficient (±50ppm/°C vs. ±100ppm/°C) for better stability across temperature variations, and (3) extended operating temperature range (-55°C ~ 175°C vs. -55°C ~ 155°C). Moisture resistance features provide additional environmental protection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RNF14FTD29K4 and CMF5529K400FHEB are both ROHS3 Compliant with REACH Unaffected status, matching the compliance profile of the RNF14FAD29K4.

Q: What is the physical size difference between these parts?

A: RNF14FAD29K4 and RNF14FTD29K4 share identical dimensions (0.093" Dia x 0.250" L / 2.35mm x 6.35mm). CMF5529K400FHEB has slightly smaller dimensions (0.090" Dia x 0.240" L / 2.29mm x 6.10mm), which may be relevant for space-constrained PCB layouts.

Q: Which part should be selected for high-volume production?

A: RNF14FTD29K4 is recommended for high-volume automated assembly due to Cut Tape packaging format and highest inventory availability (12161 units). This part maintains full electrical equivalence while optimizing for manufacturing efficiency.

Q: Can CMF5529K400FHEB be used in applications originally designed for RNF14FAD29K4?

A: Yes, with consideration for application requirements. The CMF5529K400FHEB maintains identical resistance and tolerance specifications. The higher power rating and improved temperature coefficient represent performance enhancements suitable for most applications. Verify that the slightly smaller physical dimensions do not conflict with PCB layout constraints.