RMC1/4K1002FTE Equivalent & Substitute Parts

Part Overview

The RMC1/4K1002FTE is a 10 kOhms ±1% 0.5W thick film chip resistor manufactured by Kamaya Inc. in the 1210 (3225 Metric) package format. This component is currently in active production status and is widely used in general-purpose electronic applications requiring precision resistive elements with moderate power dissipation.

Substitute parts become necessary when the primary manufacturer experiences supply constraints, when design requirements mandate specific certifications such as automotive qualification, or when inventory availability necessitates alternative sourcing from qualified manufacturers. The RMC1/4K1002FTE maintains electrical and mechanical compatibility with substitute parts that share identical resistance values, tolerance specifications, power ratings, and package dimensions.

Substiute Parts

RMC1/4K1002FTE

Kamaya Inc.In Stock: 864RMC1/4K1002FTE Datasheet

Current PartRFQ

ERJ-14NF1002U

Panasonic Electronic ComponentsIn Stock: 5558ERJ-14NF1002U Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMC1/4K1002FTE is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 10 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W minimum (equal or greater acceptable)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (equal or wider range acceptable)

Mechanical Parameters:

• Package type: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Compliance Parameters:

• REACH Status: REACH Unaffected (maintained across all substitutes)
• ECCN: EAR99 (maintained across all substitutes)

The ERJ-14NF1002U from Panasonic Electronic Components meets all electrical and mechanical equivalence criteria and is therefore classified as a direct substitute for the RMC1/4K1002FTE.

Parameter Comparison

Engineering Selection Recommendations

Primary Component (RMC1/4K1002FTE): The RMC1/4K1002FTE maintains active production status and is the preferred selection for new designs. This component is suitable for applications without automotive qualification requirements and offers standard commercial-grade reliability.

Substitute Component (ERJ-14NF1002U): The ERJ-14NF1002U is electrically and mechanically equivalent to the RMC1/4K1002FTE and carries AEC-Q200 automotive qualification. This substitute is appropriate for applications requiring automotive-grade components or when Kamaya Inc. inventory is unavailable. However, the ERJ-14NF1002U is designated "Not For New Designs" by Panasonic, indicating this part number is in end-of-life status. Selection of this substitute should be limited to replacement or maintenance applications where design continuity is required.

Dimensional Consideration: The ERJ-14NF1002U exhibits a length dimension of 0.126" (3.20mm) compared to the RMC1/4K1002FTE at 0.122" (3.10mm). This 0.004" (0.10mm) difference remains within standard PCB layout tolerances for 1210 package components and does not affect functional compatibility or board-level assembly.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-14NF1002U be used as a direct replacement for the RMC1/4K1002FTE in existing designs?

A: Yes. The ERJ-14NF1002U meets all electrical parameter requirements (10 kOhms ±1%, 0.5W, ±100ppm/°C, -55°C ~ 155°C) and mechanical specifications (1210 package, thick film composition, MSL 1). The minor dimensional difference of 0.004" in length is within standard PCB layout tolerances and does not affect assembly or performance.

Q: What is the significance of the "Not For New Designs" status on the ERJ-14NF1002U?

A: This designation indicates that Panasonic has discontinued active development and long-term production commitment for this part number. While the component remains functionally equivalent and available in current inventory, it should be selected only for replacement applications, maintenance, or designs where continuity with existing assemblies is required. New designs should prioritize the active RMC1/4K1002FTE or other actively produced alternatives.

Q: Are there compliance or certification differences between these parts?

A: The RMC1/4K1002FTE is a standard commercial-grade component. The ERJ-14NF1002U carries AEC-Q200 automotive qualification, making it suitable for automotive applications. Both parts maintain identical REACH and ECCN compliance status (REACH Unaffected, EAR99). Selection between them should be based on application requirements and design status rather than compliance considerations.

Q: Does the 1210 package dimension difference affect PCB layout?

A: The length difference of 0.10mm (0.004") between the RMC1/4K1002FTE (3.10mm) and ERJ-14NF1002U (3.20mm) is negligible for standard PCB design practices. Both components fit within standard 1210 footprints used in modern circuit board layouts. No design modifications are required for substitution.

Q: What is the moisture sensitivity implication of MSL 1 rating?

A: MSL 1 (Unlimited) indicates that both components have unlimited shelf life and require no special moisture control during storage, handling, or assembly. These parts do not require dry-pack storage or baking procedures prior to soldering, simplifying supply chain and manufacturing logistics.