RMCS1206FT243R Equivalent & Substitute Parts

Part Overview

The RMCS1206FT243R is a 243 Ohm ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor features anti-sulfur construction and is designed for general-purpose applications requiring precision resistance values in compact surface-mount form factors. The part is currently active in production with 1010 units in stock inventory.

Substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain constraints require alternative sourcing, or when design requirements call for specific feature sets such as automotive qualification or enhanced moisture resistance.

Substiute Parts

RMCS1206FT243R

Stackpole Electronics IncIn Stock: 1036RMCS1206FT243R Datasheet

Current PartRFQ

CR1206-FX-2430ELF

Bourns Inc.In Stock: 25104CR1206-FX-2430ELF Datasheet

MFR RecommendedRFQ

CRCW1206243RFKEA

Vishay DaleIn Stock: 10727CRCW1206243RFKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF2430V

Panasonic Electronic ComponentsIn Stock: 169548ERJ-8ENF2430V Datasheet

MFR RecommendedRFQ

RC1206FR-07243RL

YAGEOIn Stock: 249072RC1206FR-07243RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT243R is determined by strict equivalence across the following critical parameters:

• Resistance value: 243 Ohms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Package: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Number of terminations: 2
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical specifications. Variations in physical dimensions (length, width, height) within standard 1206 package tolerances and differences in secondary features (anti-sulfur vs. moisture-resistant vs. automotive qualification) do not affect functional interchangeability for standard applications.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are electrically and mechanically equivalent to the RMCS1206FT243R and are suitable for direct replacement in standard applications.

For new designs and long-term production programs, select from the three active-status parts: CR1206-FX-2430ELF (Bourns), CRCW1206243RFKEA (Vishay Dale), or RC1206FR-07243RL (YAGEO). The ERJ-8ENF2430V (Panasonic) carries a "Not For New Designs" status and should be used only for legacy system maintenance or repair applications where continuity with existing inventory is required.

For automotive applications requiring AEC-Q200 qualification, the CRCW1206243RFKEA (Vishay Dale) and ERJ-8ENF2430V (Panasonic) are certified. For general industrial and consumer applications, all active-status parts are suitable.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the RMCS1206FT243R?

A: Yes. All listed substitute parts meet the core electrical specifications (243 Ohms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C) and are packaged in the standard 1206 (3216 Metric) form factor. Physical dimension variations within standard package tolerances do not affect circuit performance or PCB assembly compatibility.

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

A: Anti-sulfur construction (RMCS1206FT243R) protects against sulfur-containing atmospheric contaminants. Moisture-resistant construction (CR1206-FX-2430ELF, RC1206FR-07243RL) provides enhanced protection against humidity and moisture ingress. Both are functionally equivalent for standard applications; feature selection depends on environmental exposure requirements.

Q: Why is the ERJ-8ENF2430V marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new product designs. The part remains available for existing production and repair applications but should not be selected for new development programs.

Q: Are there dimensional differences between these parts?

A: Minor variations exist within standard 1206 package tolerances. Length ranges from 0.122" to 0.126" (3.10mm to 3.20mm), width from 0.061" to 0.063" (1.55mm to 1.60mm), and height from 0.024" to 0.030" (0.60mm to 0.75mm). These variations are within PCB design and assembly machine specifications and do not affect interchangeability.

Q: Which substitute part has the highest inventory availability?

A: RC1206FR-07243RL (YAGEO) has 249,027 units in stock, followed by ERJ-8ENF2430V (Panasonic) with 169,438 units, CR1206-FX-2430ELF (Bourns) with 25,010 units, and CRCW1206243RFKEA (Vishay Dale) with 10,675 units.

Q: Do all parts comply with RoHS and REACH regulations?

A: Yes. All parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for commercial and industrial applications.