RMCS1206FT59K0 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT59K0 is a 59 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 operates across -55°C to 155°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the primary manufacturer experiences supply constraints, when design requirements mandate specific certifications such as automotive AEC-Q200 qualification, or when alternative sourcing improves cost efficiency while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	59 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT59K0 is determined by strict equivalence across the following parameters:

Resistance value: 59 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 ~ 155°C
Number of terminations: 2
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1 (Unlimited)

All four substitute parts meet these core electrical and mechanical requirements. Differences in physical dimensions (length, width, height) and feature sets (anti-sulfur vs. moisture resistant vs. automotive AEC-Q200) do not affect functional substitution within the specified parameter envelope.

Parameter Comparison

Parameter	RMCS1206FT59K0 (Stackpole)	CR1206-FX-5902ELF (Bourns)	CRCW120659K0FKEA (Vishay Dale)	ERJ-8ENF5902V (Panasonic)	RC1206FR-0759KL (YAGEO)
Resistance	59 kOhms	59 kOhms	59 kOhms	59 kOhms	59 kOhms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.25W	0.25W	0.25W	0.25W	0.25W
Package	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)	1206 (3216 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Terminations	2	2	2	2	2
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Not For New Designs	Active

Engineering Selection Recommendations

All four substitute parts are electrically and mechanically equivalent to the RMCS1206FT59K0 and meet the core parameter requirements for direct substitution.

For new designs, select from CR1206-FX-5902ELF (Bourns), CRCW120659K0FKEA (Vishay Dale), or RC1206FR-0759KL (YAGEO), all of which carry Active product status and full ROHS3 compliance.

The CRCW120659K0FKEA (Vishay Dale) carries automotive AEC-Q200 certification and is suitable for applications requiring automotive-grade component qualification.

The ERJ-8ENF5902V (Panasonic) is marked as Not For New Designs and should be used only in legacy system maintenance or when existing design documentation specifies this part number.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMCS1206FT59K0 with any of these four parts in my circuit?

A: Yes. All four substitute parts meet the electrical specifications (59 kOhms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C) and mechanical requirements (1206 package, 2 terminations, ROHS3 compliant, MSL 1). They are functionally equivalent for circuit operation.

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

A: Anti-sulfur composition (RMCS1206FT59K0) and moisture-resistant composition (CR1206-FX-5902ELF, RC1206FR-0759KL) are different protective mechanisms. Both are thick film resistors with MSL 1 rating. Feature selection depends on environmental exposure requirements specified in your design documentation.

Q: Why is ERJ-8ENF5902V marked as Not For New Designs?

A: This designation indicates the manufacturer (Panasonic) is phasing out this part number. While electrically and mechanically equivalent, it should not be selected for new product development. Use CR1206-FX-5902ELF, CRCW120659K0FKEA, or RC1206FR-0759KL for new designs.

Q: Does the slight difference in physical dimensions affect PCB layout?

A: Physical dimensions vary minimally across all parts (length 0.122" to 0.126", width 0.061" to 0.063", height 0.024" to 0.030"). Standard 1206 footprints accommodate all variants. Verify your PCB design uses standard 1206 pad spacing to ensure compatibility with any substitute.

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

A: CRCW120659K0FKEA (Vishay Dale) carries AEC-Q200 automotive qualification. Select this part if your design requires automotive-grade component certification.

Q: Are all parts available in Tape & Reel packaging?

A: CRCW120659K0FKEA is available in Cut Tape (CT) & Digi-Reel® packaging. CR1206-FX-5902ELF, ERJ-8ENF5902V, and RC1206FR-0759KL are available in Tape & Reel (TR) packaging. Verify packaging requirements with your procurement process.

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