RMCS1206FT38R3 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT38R3 is a 38.3 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This component is classified as Active product status and features anti-sulfur construction suitable for general industrial applications. Substitute parts are necessary to address supply chain flexibility, alternative sourcing options, and application-specific requirements such as automotive qualification or enhanced moisture resistance.

Substiute Parts

RMCS1206FT38R3

Stackpole Electronics IncIn Stock: 968RMCS1206FT38R3 Datasheet

Current PartRFQ

CRCW120638R3FKEA

Vishay DaleIn Stock: 40559CRCW120638R3FKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF38R3V

Panasonic Electronic ComponentsIn Stock: 89980ERJ-8ENF38R3V Datasheet

MFR RecommendedRFQ

RC1206FR-0738R3L

YAGEOIn Stock: 4707RC1206FR-0738R3L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT38R3 is determined by strict equivalence across the following parameters: resistance value (38.3 Ohms), tolerance (±1%), power rating (0.25W), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

All identified substitute parts meet these core electrical and mechanical requirements. Variations in physical dimensions (length, width, height) and application-specific features (automotive AEC-Q200 qualification, moisture resistance) do not disqualify substitution but indicate design enhancements or certifications for specialized use cases.

Parameter Comparison

Engineering Selection Recommendations

CRCW120638R3FKEA (Vishay Dale) is the primary recommended substitute. This part maintains Active product status and carries automotive AEC-Q200 qualification, making it suitable for both general and automotive applications. It provides the highest inventory availability (40,527 pcs) and ensures long-term design continuity.

RC1206FR-0738R3L (YAGEO) is an alternative substitute with Active product status. This part features moisture-resistant construction and maintains equivalent electrical specifications. It is suitable for applications requiring enhanced environmental protection.

ERJ-8ENF38R3V (Panasonic Electronic Components) carries automotive AEC-Q200 qualification but is designated as Not For New Designs. This part should be used only for legacy system maintenance or replacement applications where existing design validation has already been completed.

Frequently Asked Questions (FAQ)

Q: Can CRCW120638R3FKEA replace RMCS1206FT38R3 in new designs? A: Yes. Both parts are electrically and mechanically equivalent with identical resistance, tolerance, power rating, package, and operating temperature specifications. CRCW120638R3FKEA offers the additional benefit of automotive AEC-Q200 qualification.

Q: What is the difference between anti-sulfur and moisture-resistant features? A: Anti-sulfur construction (RMCS1206FT38R3) protects against sulfur-containing environmental contaminants. Moisture-resistant construction (RC1206FR-0738R3L) provides enhanced protection against humidity and moisture ingress. Both are thick film resistors with equivalent electrical performance.

Q: Why is ERJ-8ENF38R3V marked as Not For New Designs? A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new product designs. It remains available for legacy system support and replacement applications.

Q: Are physical dimension variations significant for PCB layout? A: Physical dimensions vary slightly between manufacturers (length 0.122" to 0.126", height 0.024" to 0.028"). These variations are within standard 1206 package tolerances and do not affect PCB footprint compatibility. Standard 1206 land patterns accommodate all listed substitutes.

Q: Do all substitute parts meet the same compliance requirements? A: Yes. All listed substitutes are ROHS3 compliant, REACH unaffected, and classified as EAR99. All carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.