RMCS1206FT4K53 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT4K53 is a 4.53 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) surface mount package manufactured by Stackpole Electronics Inc. This anti-sulfur resistor is designed for general-purpose applications requiring precision resistance values with standard operating temperature range of -55°C to 155°C. The part is currently active in production with 831 units in stock. Substitute parts are necessary when the primary part is unavailable, when design requirements specify alternative manufacturers for supply chain redundancy, or when specific certifications such as automotive AEC-Q200 qualification are required.

Key Parameters

Parameter	Value
Resistance	4.53 kOhms
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT4K53 is determined by strict equivalence across the following parameters:

Resistance value: 4.53 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.25W (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 to 155°C (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)
Moisture sensitivity: MSL 1 (exact match required)

All qualified substitute parts meet these electrical and mechanical specifications. Variations in physical dimensions (length, width, height) within standard manufacturing tolerances and differences in special features (anti-sulfur, moisture resistant, automotive certification) do not affect functional substitutability for applications requiring the core electrical parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Composition	Temp Coeff (ppm/°C)	Operating Temp (°C)	RoHS Status	MSL	Product Status
RMCS1206FT4K53	Stackpole Electronics Inc	4.53 kOhms	±1%	0.25	1206	Thick Film	±100	-55 to 155	ROHS3	1	Active
RMCF1206FT4K53	Stackpole Electronics Inc	4.53 kOhms	±1%	0.25	1206	Thick Film	±100	-55 to 155	ROHS3	1	Active
CR1206-FX-4531ELF	Bourns Inc.	4.53 kOhms	±1%	0.25	1206	Thick Film	±100	-55 to 155	ROHS3	1	Active
CRCW12064K53FKEA	Vishay Dale	4.53 kOhms	±1%	0.25	1206	Thick Film	±100	-55 to 155	ROHS3	1	Active
ERJ-8ENF4531V	Panasonic Electronic Components	4.53 kOhms	±1%	0.25	1206	Thick Film	±100	-55 to 155	ROHS3	1	Not For New Designs
RC1206FR-074K53L	YAGEO	4.53 kOhms	±1%	0.25	1206	Thick Film	±100	-55 to 155	ROHS3	1	Active

Engineering Selection Recommendations

All substitute parts listed meet the core electrical and mechanical specifications of the RMCS1206FT4K53. Selection among qualified substitutes should be based on the following factors:

Product Status: RMCF1206FT4K53, CR1206-FX-4531ELF, CRCW12064K53FKEA, and RC1206FR-074K53L are all active products suitable for new designs. ERJ-8ENF4531V carries a "Not For New Designs" status and should be used only for legacy system maintenance or replacement applications.

Certifications and Features: RMCF1206FT4K53 and CRCW12064K53FKEA include automotive AEC-Q200 certification, making them suitable for automotive applications. CR1206-FX-4531ELF and RC1206FR-074K53L feature moisture-resistant construction. RMCS1206FT4K53 includes anti-sulfur treatment.

Inventory Availability: CRCW12064K53FKEA (20,570 units), ERJ-8ENF4531V (63,445 units), and RC1206FR-074K53L (44,991 units) offer higher stock levels compared to RMCF1206FT4K53 (15,199 units) and the original RMCS1206FT4K53 (831 units).

Compliance: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can RMCF1206FT4K53 be used as a direct replacement for RMCS1206FT4K53?

A: Yes. Both parts are manufactured by Stackpole Electronics Inc and share identical electrical specifications (4.53 kOhms ±1%, 0.25W, 1206 package, thick film composition, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range). RMCF1206FT4K53 includes automotive AEC-Q200 certification and is actively produced, making it suitable for new designs.

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

A: Anti-sulfur treatment protects against sulfur-containing atmospheric contaminants. Moisture-resistant construction provides protection against humidity and moisture ingress. Both are protective features that do not affect the core electrical parameters or substitutability of the resistor.

Q: Why is ERJ-8ENF4531V marked "Not For New Designs"?

A: This designation indicates that while the part remains available and functionally equivalent, the manufacturer recommends using alternative sources for new product development. It is suitable for replacement or maintenance of existing systems.

Q: Are all substitute parts available in the same 1206 package?

A: Yes. All substitute parts use the 1206 (3216 Metric) surface mount package. Minor variations in physical dimensions (length, width, height) exist within standard manufacturing tolerances but do not affect PCB footprint compatibility or mounting procedures.

Q: Which substitute part should be selected for automotive applications?

A: RMCF1206FT4K53 and CRCW12064K53FKEA both carry automotive AEC-Q200 certification and are suitable for automotive applications requiring this qualification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component use.

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