RC2012F4121CS Equivalent & Substitute Parts

Part Overview

The RC2012F4121CS is a 4.12 kOhms ±1% 0.125W (1/8W) chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package. This thick film, moisture-resistant component operates across the temperature range of -55°C to 155°C and is ROHS3 compliant. The part is currently active in production. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when specific application requirements necessitate alternative manufacturer specifications.

Substiute Parts

RC2012F4121CS

Samsung Electro-MechanicsIn Stock: 781RC2012F4121CS Datasheet

Current PartRFQ

RC0805FR-074K12L

YAGEOIn Stock: 241016RC0805FR-074K12L Datasheet

DirectRFQ

ERJ-6ENF4121V

Panasonic Electronic ComponentsIn Stock: 195878ERJ-6ENF4121V Datasheet

SimilarRFQ

RMCF0805FT4K12

Stackpole Electronics IncIn Stock: 1397RMCF0805FT4K12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC2012F4121CS are qualified based on electrical and mechanical parameter equivalence. All identified substitutes match the following critical parameters:

• Resistance value: 4.12 kOhms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Package: 0805 (2012 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture sensitivity level: 1 (Unlimited)
• RoHS compliance: ROHS3 Compliant
• Termination count: 2

Substitutes are grouped into two categories: direct equivalents (identical specifications) and similar parts (equivalent electrical performance with additional certifications). Direct equivalents provide one-to-one replacement capability. Similar parts include automotive-grade AEC-Q200 certification, which represents an enhanced qualification level suitable for automotive applications while maintaining full compatibility with standard industrial applications.

Parameter Comparison

Engineering Selection Recommendations

All four parts listed are active products with ROHS3 compliance and identical electrical specifications. Selection between these parts is determined by application requirements and packaging preferences.

RC0805FR-074K12L (YAGEO) is a direct electrical equivalent with the lowest seated height (0.024" / 0.60mm), making it suitable for space-constrained applications. This part is available in Cut Tape and Digi-Reel packaging.

ERJ-6ENF4121V (Panasonic) and RMCF0805FT4K12 (Stackpole) both carry AEC-Q200 automotive qualification. These parts are suitable for automotive applications and general industrial use. ERJ-6ENF4121V has a maximum seated height of 0.028" (0.70mm), while RMCF0805FT4K12 measures 0.026" (0.65mm).

RC2012F4121CS (Samsung) is the primary part with moisture-resistant thick film construction and standard industrial qualification. It is available in Tape & Reel packaging.

All parts are interchangeable from an electrical and mechanical standpoint within standard PCB assembly processes. Selection should be based on availability, packaging format requirements, and whether automotive-grade certification is required for the application.

Frequently Asked Questions (FAQ)

Q: Can RC0805FR-074K12L replace RC2012F4121CS directly?

A: Yes. Both parts have identical electrical specifications (4.12 kOhms ±1%, 0.125W, ±100ppm/°C, -55°C to 155°C operating range) and the same 0805 package. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and a slightly lower seated height (0.024" versus 0.026"). Direct PCB-level substitution is valid.

Q: What is the difference between the Samsung part and the Panasonic ERJ-6ENF4121V?

A: Both parts are electrically and mechanically equivalent. The ERJ-6ENF4121V includes AEC-Q200 automotive qualification, which the Samsung part does not carry. If automotive certification is not required, both parts perform identically. If automotive qualification is required, the Panasonic part is the appropriate selection.

Q: Are the Stackpole RMCF0805FT4K12 and Panasonic ERJ-6ENF4121V interchangeable?

A: Yes. Both parts have identical electrical specifications and AEC-Q200 automotive certification. The only difference is seated height: Stackpole measures 0.026" (0.65mm) and Panasonic measures 0.028" (0.70mm). This difference is negligible for standard PCB assembly and does not affect electrical performance.

Q: Does the lower seated height of the YAGEO part affect compatibility?

A: No. The YAGEO RC0805FR-074K12L has a seated height of 0.024" (0.60mm) compared to 0.026" (0.66mm) for the Samsung part. This variation is within standard PCB assembly tolerances and does not affect electrical performance or mechanical fit in standard 0805 footprints.

Q: Can these parts be used in automotive applications?

A: The Panasonic ERJ-6ENF4121V and Stackpole RMCF0805FT4K12 carry AEC-Q200 automotive qualification and are suitable for automotive applications. The Samsung RC2012F4121CS and YAGEO RC0805FR-074K12L do not carry automotive certification but are suitable for general industrial applications.

Q: What does MSL 1 (Unlimited) mean for these parts?

A: MSL 1 (Unlimited) indicates that these parts have unlimited shelf life and do not require special moisture-controlled storage or handling. They can be stored and handled under standard industrial conditions without moisture sensitivity concerns.

Q: Are all these parts ROHS3 compliant?

A: Yes. All four parts (RC2012F4121CS, RC0805FR-074K12L, ERJ-6ENF4121V, and RMCF0805FT4K12) are ROHS3 compliant and suitable for applications requiring RoHS compliance.