RC1005F1213CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F1213CS is a 121 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format with 1/16W power rating. This component is classified as Active product status with moisture-resistant construction and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional interchangeability in circuit applications.

Substiute Parts

RC1005F1213CS

Samsung Electro-MechanicsIn Stock: 732RC1005F1213CS Datasheet

Current PartRFQ

CR0402-FX-1213GLF

Bourns Inc.In Stock: 45760CR0402-FX-1213GLF Datasheet

DirectRFQ

RC0402FR-07121KL

YAGEOIn Stock: 6707RC0402FR-07121KL Datasheet

DirectRFQ

ERJ-2RKF1213X

Panasonic Electronic ComponentsIn Stock: 215557ERJ-2RKF1213X Datasheet

UpgradeRFQ

AC0402FR-07121KL

YAGEOIn Stock: 28172AC0402FR-07121KL Datasheet

SimilarRFQ

AF0402FR-07121KL

YAGEOIn Stock: 20757AF0402FR-07121KL Datasheet

SimilarRFQ

CRCW0402121KFKED

Vishay DaleIn Stock: 1542CRCW0402121KFKED Datasheet

SimilarRFQ

CRCW0402121KFKTD

Vishay DaleIn Stock: 28382CRCW0402121KFKTD Datasheet

SimilarRFQ

RMCF0402FT121K

Stackpole Electronics IncIn Stock: 156449RMCF0402FT121K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Electrical Equivalence Requirements:

• Resistance value: 121 kOhms (exact match)
• Tolerance: ±1% (exact match)
• Temperature Coefficient: ±100ppm/°C (exact match)
• Operating Temperature Range: -55°C ~ 155°C (exact match or wider range acceptable)

Mechanical Equivalence Requirements:

• Package / Case: 0402 (1005 Metric) (exact match)
• Physical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) (exact match)
• Height - Seated (Max): 0.016" (0.40mm) or equivalent
• Number of Terminations: 2 (exact match)

Environmental & Compliance Requirements:

• Composition: Thick Film (exact match)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match)
• RoHS Status: ROHS3 Compliant (preferred)
• REACH Status: REACH Unaffected (preferred)

Substitute parts are categorized as Direct, Upgrade, or Similar based on feature alignment with the main part specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Functionally Equivalent):

CR0402-FX-1213GLF (Bourns Inc.) and RC0402FR-07121KL (YAGEO) are direct substitutes meeting all electrical and mechanical specifications. Both maintain ROHS3 compliance and MSL 1 rating. CR0402-FX-1213GLF offers higher inventory availability (45665 Pcs). RC0402FR-07121KL includes moisture-resistant features matching the main part specification.

Upgrade Substitute (Enhanced Performance):

ERJ-2RKF1213X (Panasonic Electronic Components) provides upgraded power rating of 0.1W (1/10W) versus 0.063W (1/16W) in the main part, with Automotive AEC-Q200 certification. This part is suitable for applications requiring higher thermal margin or automotive-grade reliability. Inventory availability is substantial (215458 Pcs).

Similar Substitutes (Feature-Enhanced):

AC0402FR-07121KL, AF0402FR-07121KL, CRCW0402121KFKED, and RMCF0402FT121K all include Automotive AEC-Q200 certification. AC0402FR-07121KL and AF0402FR-07121KL add moisture-resistant or anti-sulfur features respectively. RMCF0402FT121K offers the highest inventory (156400 Pcs) among AEC-Q200 rated options. All maintain ROHS3 compliance except CRCW0402121KFKTD.

Non-Recommended:

CRCW0402121KFKTD (Vishay Dale) is RoHS non-compliant and REACH Affected, making it unsuitable for applications requiring regulatory compliance with current environmental standards.

Frequently Asked Questions (FAQ)

Q: Can I use ERJ-2RKF1213X as a direct replacement for RC1005F1213CS?

A: ERJ-2RKF1213X is functionally compatible with identical electrical specifications and package dimensions. The primary difference is the higher power rating (0.1W vs. 0.063W), which provides additional thermal capability. This upgrade is suitable for all applications where the original part operates within its power budget. The AEC-Q200 automotive certification is an additional feature not present in the main part.

Q: What is the difference between moisture-resistant and standard thick film resistors?

A: Moisture-resistant thick film resistors include protective coatings that reduce moisture absorption and environmental degradation. RC1005F1213CS, RC0402FR-07121KL, AC0402FR-07121KL, and AF0402FR-07121KL include this feature. Standard thick film resistors (CR0402-FX-1213GLF, RMCF0402FT121K) lack this specification but maintain MSL 1 rating, indicating unlimited moisture sensitivity level handling.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use 0402 (1005 Metric) package with identical physical dimensions (0.039" L x 0.020" W). Packaging format differs: RC1005F1213CS, CR0402-FX-1213GLF, ERJ-2RKF1213X, AC0402FR-07121KL, AF0402FR-07121KL, and RMCF0402FT121K are supplied in Tape & Reel (TR). RC0402FR-07121KL is supplied in Cut Tape (CT) & Digi-Reel®. CRCW0402121KFKED and CRCW0402121KFKTD are supplied in Cut Tape (CT) & Digi-Reel® with Tape & Reel (TR) option.

Q: Which substitute offers the best inventory availability?

A: ERJ-2RKF1213X (Panasonic) provides the highest inventory at 215458 Pcs, followed by RMCF0402FT121K (Stackpole) at 156400 Pcs. CR0402-FX-1213GLF (Bourns) offers 45665 Pcs. These high-availability options support supply chain continuity for volume production.

Q: What does AEC-Q200 certification indicate?

A: AEC-Q200 is an automotive electronics qualification standard indicating the component meets reliability and performance requirements for automotive applications. ERJ-2RKF1213X, AC0402FR-07121KL, AF0402FR-07121KL, CRCW0402121KFKED, CRCW0402121KFKTD, and RMCF0402FT121K carry this certification. The main part RC1005F1213CS does not list AEC-Q200 certification.

Q: Is ROHS3 compliance required for my application?

A: ROHS3 compliance is mandatory for applications subject to European Union Restriction of Hazardous Substances regulations. All substitute parts except CRCW0402121KFKTD maintain ROHS3 compliance. CRCW0402121KFKTD is RoHS non-compliant and should not be selected for regulated applications.

Q: Can I substitute parts with different temperature coefficients?

A: No. All listed substitutes maintain ±100ppm/°C temperature coefficient matching the main part. Temperature coefficient directly affects circuit performance across the operating temperature range (-55°C ~ 155°C). Substitution requires exact match on this parameter.