RMCS1206FT46K4 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT46K4 is a 46.4 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor features anti-sulfur composition and is designed for general-purpose applications requiring precision resistance values with tight tolerance specifications. The part is currently in active production status. Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative manufacturer options while maintaining identical electrical and mechanical specifications.

Substiute Parts

RMCS1206FT46K4

Stackpole Electronics IncIn Stock: 941RMCS1206FT46K4 Datasheet

Current PartRFQ

CR1206-FX-4642ELF

Bourns Inc.In Stock: 26008CR1206-FX-4642ELF Datasheet

MFR RecommendedRFQ

CRCW120646K4FKEA

Vishay DaleIn Stock: 15771CRCW120646K4FKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF4642V

Panasonic Electronic ComponentsIn Stock: 58769ERJ-8ENF4642V Datasheet

MFR RecommendedRFQ

RC1206FR-0746K4L

YAGEOIn Stock: 11197RC1206FR-0746K4L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT46K4 is determined by strict equivalence across the following critical parameters:

• Resistance value: 46.4 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Package: 1206 (3216 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)

All substitute parts listed below meet these criteria. Variations in physical dimensions (length, width, height) within standard manufacturing tolerances and differences in secondary features (anti-sulfur vs. moisture resistant composition) do not affect functional equivalence for circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to the RMCS1206FT46K4 based on identical electrical and mechanical specifications. Selection among available substitutes should be based on the following factors:

CR1206-FX-4642ELF (Bourns Inc.) and RC1206FR-0746K4L (YAGEO) are recommended for new designs. Both parts maintain active production status and full ROHS3 compliance with unlimited moisture sensitivity rating.

CRCW120646K4FKEA (Vishay Dale) is suitable for applications requiring automotive-grade components, as it carries AEC-Q200 qualification. This part is actively produced and meets all compliance requirements.

ERJ-8ENF4642V (Panasonic Electronic Components) carries AEC-Q200 automotive qualification but is designated "Not For New Designs." This part should be used only in legacy system maintenance or when existing design documentation specifically requires Panasonic components.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RMCS1206FT46K4 with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts are electrically and mechanically equivalent. They share identical resistance value (46.4 kOhms), tolerance (±1%), power rating (0.25W), package (1206), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Direct substitution in existing PCB layouts is supported.

Q: What is the difference between anti-sulfur and moisture-resistant compositions?

A: Both are thick film resistor compositions that meet the same electrical specifications. Anti-sulfur composition (RMCS1206FT46K4) provides protection against sulfur contamination in specific environments. Moisture-resistant composition (CR1206-FX-4642ELF, RC1206FR-0746K4L) provides enhanced protection in humid conditions. Selection depends on application environment, not electrical performance.

Q: Why is ERJ-8ENF4642V marked "Not For New Designs"?

A: This designation indicates that Panasonic has discontinued active development of this product line. While the part remains functionally equivalent and available in inventory, it should not be selected for new circuit designs. Use this part only for replacement or maintenance of existing systems already using this component.

Q: Are there packaging format differences I should consider?

A: The main part (RMCS1206FT46K4) is supplied in Tape & Reel (TR) format. CR1206-FX-4642ELF, CRCW120646K4FKEA, and ERJ-8ENF4642V are also supplied in Tape & Reel format. RC1206FR-0746K4L is supplied in Cut Tape (CT) & Digi-Reel format. Packaging format does not affect component performance; selection depends on assembly process requirements.

Q: Do all substitute parts have the same physical dimensions?

A: Physical dimensions vary slightly within standard manufacturing tolerances. The RMCS1206FT46K4 measures 0.122" L x 0.061" W with 0.026" maximum seated height. Substitute parts measure 0.126" L x 0.063" W with heights ranging from 0.024" to 0.030". These variations are within standard 1206 package tolerances and do not affect PCB layout compatibility.

Q: Which substitute part should I choose for automotive applications?

A: CRCW120646K4FKEA (Vishay Dale) and ERJ-8ENF4642V (Panasonic) both carry AEC-Q200 automotive qualification. CRCW120646K4FKEA is recommended for new automotive designs due to active production status. ERJ-8ENF4642V should be used only for legacy automotive system maintenance.