RC3216F5112CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216F5112CS is a 51.1 kOhms ±1% 0.25W thick film chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format. This component is classified as Active product status with moisture-resistant construction, operating across -55°C to 155°C temperature range. The part is RoHS3 compliant and REACH unaffected, suitable for general industrial and commercial applications requiring precision resistive elements.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing improves supply chain resilience, or when design requirements permit selection from qualified alternative manufacturers meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Specification
Resistance Value	51.1 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 to 155°C
Moisture Sensitivity Level	MSL 1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RC3216F5112CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 51.1 kOhms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Package format: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Termination count: 2
RoHS3 compliance
MSL rating: 1 (Unlimited)

Acceptable Variations:

Manufacturer identity (different qualified suppliers)
Packaging format (Tape & Reel vs. Cut Tape)
Physical dimensions within tolerance (length, width, height variations ≤0.006")
Additional features (moisture resistance, automotive AEC-Q200 qualification, anti-sulfur treatment) that do not reduce base specification compliance

Non-Substitutable Deviations:

Power rating different from 0.25W (parts rated 0.5W or higher are not direct substitutes)
Resistance value variance from 51.1 kOhms
Tolerance tighter or looser than ±1%
Package format other than 1206
Operating temperature range narrower than -55°C to 155°C

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Features	Product Status	Packaging Type
RC3216F5112CS	Samsung Electro-Mechanics	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	Bulk
CR1206-FX-5112ELF	Bourns Inc.	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	Tape & Reel
ERJ-8ENF5112V	Panasonic Electronic Components	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Not For New Designs	Tape & Reel
RC1206FR-0751K1L	YAGEO	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	Tape & Reel
RMCF1206FT51K1	Stackpole Electronics Inc	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active	Tape & Reel
CRCW120651K1FKEA	Vishay Dale	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active	Tape & Reel
MCR18ERTF5112	Rohm Semiconductor	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Standard	Discontinued at DiGi Electronics	Cut Tape & Digi-Reel
RMCF1206FG51K1	Stackpole Electronics Inc	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active	Tape & Reel
RMCS1206FT51K1	Stackpole Electronics Inc	51.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Anti-Sulfur	Active	Tape & Reel

Engineering Selection Recommendations

Primary Substitutes (Active Status, Highest Compatibility):

RC1206FR-0751K1L (YAGEO) represents the highest-volume alternative with 369,985 pieces in stock. This part maintains Active product status, moisture-resistant construction matching the original specification, and identical electrical parameters. Selection of this substitute is appropriate for applications where supply continuity and cost optimization are primary considerations.

RMCF1206FT51K1 (Stackpole Electronics Inc) and CRCW120651K1FKEA (Vishay Dale) are qualified alternatives for applications requiring automotive-grade components. Both parts carry AEC-Q200 certification, indicating qualification for automotive temperature cycling and reliability standards. These substitutes are suitable when design specifications mandate automotive-qualified components or when enhanced reliability documentation is required.

CR1206-FX-5112ELF (Bourns Inc.) provides an alternative from a major passive component manufacturer with 25,491 pieces available. This part maintains full specification equivalence with moisture-resistant features and Active product status.

Secondary Substitutes (Specialized Applications):

RMCS1206FT51K1 (Stackpole Electronics Inc) incorporates anti-sulfur treatment, suitable for applications in corrosive or high-sulfur environments. This part maintains all base electrical specifications while adding environmental protection features.

RMCF1206FG51K1 (Stackpole Electronics Inc) offers automotive AEC-Q200 qualification with limited inventory (702 pieces). Selection is appropriate when automotive qualification is mandatory and supply constraints are acceptable.

Not Recommended for New Designs:

ERJ-8ENF5112V (Panasonic Electronic Components) carries "Not For New Designs" status despite meeting all electrical and mechanical specifications. This designation indicates manufacturer discontinuation trajectory. Use only in legacy system maintenance or when existing design lock-in requires component-level compatibility.

MCR18ERTF5112 (Rohm Semiconductor) is discontinued at DiGi Electronics with limited remaining inventory (1,633 pieces). This part meets all technical specifications but should not be selected for new designs due to supply discontinuation.

RMCP1206FT51K1 (Stackpole Electronics Inc) is not a direct substitute. This part is rated 0.5W (1/2W) power dissipation, exceeding the 0.25W specification of the RC3216F5112CS. While physically compatible in 1206 package format, the higher power rating represents a different component class and is not interchangeable without circuit re-evaluation.

Frequently Asked Questions (FAQ)

Q: Can RMCP1206FT51K1 replace RC3216F5112CS in my circuit?

A: No. RMCP1206FT51K1 is rated 0.5W (1/2W) power dissipation, while RC3216F5112CS is rated 0.25W (1/4W). These are different component classes. Although both use 1206 package format and share 51.1 kOhms resistance, the power rating difference makes them non-interchangeable without circuit analysis and thermal re-evaluation.

Q: What is the difference between moisture-resistant and automotive AEC-Q200 qualified parts?

A: Moisture-resistant construction (RC3216F5112CS, RC1206FR-0751K1L, CR1206-FX-5112ELF) indicates the component meets moisture ingress protection standards suitable for general industrial environments. Automotive AEC-Q200 qualified parts (RMCF1206FT51K1, CRCW120651K1FKEA, RMCF1206FG51K1) undergo additional qualification testing for automotive temperature cycling, vibration, and reliability requirements. AEC-Q200 parts are suitable for automotive applications but also function in general industrial use. Selection depends on application environment requirements.

Q: Why is ERJ-8ENF5112V marked "Not For New Designs"?

A: This designation indicates the manufacturer (Panasonic) has announced discontinuation of this product line. While the part currently meets all electrical and mechanical specifications and remains in stock, it should not be selected for new circuit designs due to future supply unavailability. Use only for legacy system maintenance or repair of existing products already in field deployment.

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

A: Most substitutes are available in Tape & Reel (TR) format suitable for automated assembly. MCR18ERTF5112 is supplied in Cut Tape (CT) & Digi-Reel format. The original RC3216F5112CS is listed as bulk packaging. Verify packaging format compatibility with your assembly process before part selection.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 (Moisture Sensitivity Level 1) indicates the component has unlimited shelf life without moisture bake-out requirements. All listed substitute parts carry MSL 1 rating, meaning they do not require pre-reflow drying procedures and can be stored indefinitely under normal warehouse conditions. This specification is consistent across all equivalent parts.

Q: Can I use anti-sulfur RMCS1206FT51K1 in place of standard moisture-resistant parts?

A: Yes. RMCS1206FT51K1 meets all base electrical specifications of RC3216F5112CS and adds anti-sulfur treatment as an additional feature. Anti-sulfur construction provides enhanced protection in high-sulfur environments (industrial areas, coastal regions, certain manufacturing facilities) without compromising standard performance. This part is a functional superset suitable for any application accepting the original part.

Q: What is the significance of different physical dimensions listed for substitute parts?

A: Physical dimensions (length, width, height) vary slightly between manufacturers due to manufacturing tolerances and construction methods. All listed substitutes maintain 1206 (3216 Metric) package classification with dimensions within industry-standard tolerance bands. Variations of ±0.006" in length or height do not affect PCB footprint compatibility or automated assembly processes. Verify specific dimensions only if your design includes tight mechanical constraints or specialized mounting requirements.

Q: Which substitute offers the best supply availability?

A: RC1206FR-0751K1L (YAGEO) provides the highest inventory level with 369,985 pieces in stock, followed by ERJ-8ENF5112V (Panasonic) with 42,745 pieces and CRCW120651K1FKEA (Vishay Dale) with 25,295 pieces. For applications requiring immediate large-volume procurement, YAGEO represents the most reliable supply source among active products.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message