RNF14FAD243K Equivalent & Substitute Parts

Part Overview

The RNF14FAD243K is a 243 kOhms ±1% 0.25W (1/4W) through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal film resistor features flame retardant coating and safety construction, designed for general-purpose electronic applications requiring precision resistance values with tight tolerance specifications. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, packaging format preferences, or performance upgrade requirements.

Substiute Parts

RNF14FAD243K

Stackpole Electronics IncIn Stock: 1023RNF14FAD243K Datasheet

Current PartRFQ

RNF14FTD243K

Stackpole Electronics IncIn Stock: 15763RNF14FTD243K Datasheet

DirectRFQ

CMF55243K00FHEB

Vishay DaleIn Stock: 1734CMF55243K00FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RNF14FAD243K are classified based on the following allowed substitution criteria:

Direct Substitutes maintain identical electrical specifications: 243 kOhms resistance, ±1% tolerance, 0.25W power rating, metal film composition, axial package, and equivalent temperature performance. Packaging format differences (Tape & Box versus Cut Tape) do not affect electrical compatibility.

Upgrade Substitutes provide enhanced performance within the same resistance and tolerance class while maintaining axial package compatibility. These parts may feature improved temperature coefficients, extended operating temperature ranges, or higher power ratings, allowing operation in more demanding thermal environments without changing the core resistance value or tolerance specification.

Parameter Comparison

Engineering Selection Recommendations

RNF14FTD243K serves as a direct electrical equivalent to the RNF14FAD243K. Both parts are manufactured by Stackpole Electronics Inc and maintain identical resistance, tolerance, power rating, and temperature specifications. The primary difference is packaging format: RNF14FTD243K is supplied in Cut Tape format, whereas RNF14FAD243K is supplied in Tape & Box format. Selection between these two parts depends on assembly process requirements and inventory management preferences. Both maintain Active product status and ROHS3 compliance.

CMF55243K00FHEB represents an upgrade substitute manufactured by Vishay Dale. This part maintains the same 243 kOhms resistance and ±1% tolerance but provides enhanced performance characteristics: 0.5W power rating (versus 0.25W), improved temperature coefficient of ±50ppm/°C (versus ±100ppm/°C), extended operating temperature range to 175°C (versus 155°C), and additional moisture-resistant features. Selection of this upgrade substitute is appropriate for applications requiring improved thermal stability, higher power dissipation capability, or operation in moisture-prone environments. All three parts maintain ROHS3 compliance and Active product status.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD243K be used as a direct replacement for RNF14FAD243K?

A: Yes. Both parts are electrically identical with 243 kOhms resistance, ±1% tolerance, 0.25W power rating, and equivalent temperature performance. The difference is packaging format only: Cut Tape versus Tape & Box. Electrical performance and circuit compatibility are unchanged.

Q: What are the advantages of using CMF55243K00FHEB instead of RNF14FAD243K?

A: CMF55243K00FHEB provides three performance enhancements: doubled power rating (0.5W versus 0.25W), superior temperature coefficient (±50ppm/°C versus ±100ppm/°C), and extended operating temperature range (-55°C to 175°C versus -55°C to 155°C). Additionally, it includes moisture-resistant features. These upgrades benefit applications with higher thermal demands or moisture exposure.

Q: Are all three parts suitable for the same circuit applications?

A: RNF14FAD243K and RNF14FTD243K are suitable for identical applications due to matching electrical specifications. CMF55243K00FHEB is suitable for the same applications and additionally supports higher-temperature or higher-power-dissipation environments. Verify that your circuit's power dissipation requirements do not exceed 0.25W if using RNF14FAD243K or RNF14FTD243K.

Q: Do packaging format differences affect circuit performance?

A: No. Packaging format (Tape & Box versus Cut Tape) affects only handling, storage, and assembly logistics. Electrical performance and circuit compatibility remain identical between RNF14FAD243K and RNF14FTD243K.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RNF14FAD243K, RNF14FTD243K, and CMF55243K00FHEB are all ROHS3 compliant and maintain Active product status.