Equivalent & Substitute Parts for RMC1/8K38R3FTP

Part Overview

The RMC1/8K38R3FTP is a 38.3 Ohm ±1% 0.25W thick film chip resistor manufactured by Kamaya Inc. in 1206 (3216 Metric) surface mount package format. This component is classified as Active product status with unlimited moisture sensitivity rating (MSL 1). The part is supplied in Tape & Reel packaging with 606 pieces currently in stock inventory.

Substitute parts become necessary when the primary manufacturer part experiences supply constraints, extended lead times, or when design requirements mandate alternative manufacturer certifications such as automotive AEC-Q200 qualification or enhanced moisture resistance features.

Substiute Parts

RMC1/8K38R3FTP

Kamaya Inc.In Stock: 710RMC1/8K38R3FTP Datasheet

Current PartRFQ

ERJ-8ENF38R3V

Panasonic Electronic ComponentsIn Stock: 89980ERJ-8ENF38R3V Datasheet

DirectRFQ

RC1206FR-0738R3L

YAGEOIn Stock: 4707RC1206FR-0738R3L Datasheet

DirectRFQ

RMCF1206FT38R3

Stackpole Electronics IncIn Stock: 5702RMCF1206FT38R3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for RMC1/8K38R3FTP is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 38.3 Ohms (exact)
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Package: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture sensitivity: MSL 1 (Unlimited)
• Number of terminations: 2

All four substitute parts listed meet these mandatory parameters. Differences in physical dimensions (length and height) within the 1206 package classification, product status designations, and optional certifications (such as AEC-Q200 automotive qualification) do not disqualify substitution but may influence selection based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Status, Standard Applications): RC1206FR-0738R3L (YAGEO) is the preferred substitute for general-purpose applications. This part maintains Active product status, ensuring long-term availability and manufacturer support. The moisture-resistant feature provides enhanced reliability in humid environments without introducing unnecessary automotive-specific constraints.

Secondary Selection (Active Status, Automotive Applications): RMCF1206FT38R3 (Stackpole Electronics Inc) is suitable for designs requiring automotive-grade components. This part carries Active product status and AEC-Q200 certification, meeting automotive industry reliability standards. Selection of this part is appropriate only when the application explicitly requires automotive qualification.

Alternative Selection (High Inventory Availability): ERJ-8ENF38R3V (Panasonic Electronic Components) offers the highest inventory availability at 89,940 pieces. However, this part carries "Not For New Designs" product status, indicating manufacturer phase-out. This part is suitable only for sustaining production of existing designs or when supply of Active-status alternatives is unavailable.

Avoidance Recommendation: Do not select ERJ-8ENF38R3V for new design implementations due to its "Not For New Designs" status, which signals potential future discontinuation and reduced manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can ERJ-8ENF38R3V be used as a direct replacement for RMC1/8K38R3FTP?

A: Yes, ERJ-8ENF38R3V meets all mandatory electrical and mechanical parameters for direct substitution. However, its "Not For New Designs" product status makes it unsuitable for new product development. Use this part only for sustaining existing production runs where supply of Active-status alternatives is constrained.

Q: What is the difference between the automotive-qualified parts (ERJ-8ENF38R3V and RMCF1206FT38R3) and the standard parts?

A: Automotive-qualified parts carry AEC-Q200 certification, indicating compliance with automotive industry reliability and testing standards. These parts are required only for applications subject to automotive specifications. Standard parts without AEC-Q200 certification are suitable for consumer, industrial, and non-automotive commercial applications.

Q: Are there physical dimension differences between substitute parts?

A: Minor physical dimension variations exist within the 1206 package classification. The main part (RMC1/8K38R3FTP) and RC1206FR-0738R3L measure 0.122" L × 0.063" W with 0.025" maximum seated height. ERJ-8ENF38R3V and RMCF1206FT38R3 measure 0.126" L × 0.063" W with 0.028" maximum seated height. These variations remain within 1206 package tolerances and do not affect PCB footprint compatibility.

Q: Which substitute part should be selected for moisture-sensitive applications?

A: RC1206FR-0738R3L (YAGEO) explicitly features moisture-resistant construction. All parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. RC1206FR-0738R3L is the optimal choice when enhanced moisture resistance is a design requirement.

Q: Is RoHS compliance a substitution criterion?

A: RoHS compliance is not a mandatory substitution parameter for this part category. However, three of four substitute parts (ERJ-8ENF38R3V, RC1206FR-0738R3L, RMCF1206FT38R3) carry ROHS3 Compliant certification. If RoHS compliance is required by application or regulatory standards, select from these three options.

Q: Can substitute parts be mixed within a single production run?

A: Yes. All substitute parts meet identical electrical specifications (38.3 Ohms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C). Mixing substitute parts within a single assembly is electrically and mechanically valid. However, manufacturing and quality documentation practices may require consistency within individual production batches for traceability purposes.