RC1005F4221CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F4221CS is a 4.22 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device is rated at 0.063W (1/16W) power dissipation with moisture resistant characteristics and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced power ratings.

Substiute Parts

RC1005F4221CS

Samsung Electro-MechanicsIn Stock: 1178RC1005F4221CS Datasheet

Current PartRFQ

CR0402-FX-4221GLF

Bourns Inc.In Stock: 45130CR0402-FX-4221GLF Datasheet

DirectRFQ

RC0402FR-074K22L

YAGEOIn Stock: 180288RC0402FR-074K22L Datasheet

DirectRFQ

ERJ-2RKF4221X

Panasonic Electronic ComponentsIn Stock: 198498ERJ-2RKF4221X Datasheet

UpgradeRFQ

AC0402FR-074K22L

YAGEOIn Stock: 19281AC0402FR-074K22L Datasheet

SimilarRFQ

CRCW04024K22FKED

Vishay DaleIn Stock: 48324CRCW04024K22FKED Datasheet

SimilarRFQ

CRCW04024K22FKTD

Vishay DaleIn Stock: 10226CRCW04024K22FKTD Datasheet

SimilarRFQ

RMCF0402FT4K22

Stackpole Electronics IncIn Stock: 158709RMCF0402FT4K22 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F4221CS is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Resistance value: 4.22 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 0402 (1005 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)
• Number of Terminations: 2 (exact match required)

Secondary Compatibility Parameters:

• Power Rating: 0.063W (1/16W) minimum; higher ratings (0.1W / 1/10W) are acceptable upgrades
• RoHS Status: ROHS3 Compliant preferred; non-compliant parts noted for legacy applications
• Moisture Sensitivity Level: MSL 1 (Unlimited) standard
• Automotive Qualification: AEC-Q200 certification available on select alternatives

Substitute parts are grouped into three categories: Direct equivalents (identical specifications), upgrades (enhanced power rating), and similar alternatives (additional certifications or features).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Specifications): CR0402-FX-4221GLF (Bourns Inc.) and RC0402FR-074K22L (YAGEO) are direct functional equivalents to the RC1005F4221CS. Both maintain identical resistance, tolerance, power rating, package dimensions, and temperature characteristics. Selection between these options is based on packaging format preference (Tape & Reel versus Cut Tape & Digi-Reel) and supplier availability.

Upgrade Option (Enhanced Power Rating): ERJ-2RKF4221X (Panasonic Electronic Components) provides a 0.1W (1/10W) power rating compared to the 0.063W (1/16W) specification of the main part. This upgrade is suitable for applications requiring higher thermal margin or increased power dissipation capability. The part includes Automotive AEC-Q200 qualification and maintains all other electrical parameters. This substitution is unidirectional; the upgrade may be used in place of the original part but not vice versa.

Automotive-Qualified Alternatives: AC0402FR-074K22L (YAGEO), CRCW04024K22FKED (Vishay Dale), and RMCF0402FT4K22 (Stackpole Electronics Inc) are suitable for applications requiring AEC-Q200 automotive qualification. All three maintain the 0.063W power rating and ROHS3 compliance. AC0402FR-074K22L additionally includes moisture resistant characteristics matching the original part. CRCW04024K22FKED is available in Cut Tape & Digi-Reel packaging.

Legacy / Non-Compliant Option: CRCW04024K22FKTD (Vishay Dale) is electrically and mechanically equivalent but carries RoHS non-compliant status and REACH affected designation. This part is restricted to legacy applications or regions where RoHS3 compliance is not mandated.

Compliance Summary: All recommended direct equivalents and upgrades maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity level. Selection should prioritize ROHS3-compliant alternatives for new designs unless legacy component support is explicitly required.

Frequently Asked Questions (FAQ)

Q: Can ERJ-2RKF4221X (0.1W) be used as a direct replacement for RC1005F4221CS (0.063W)?

A: Yes. The ERJ-2RKF4221X provides a higher power rating (0.1W versus 0.063W) while maintaining all other electrical specifications including resistance, tolerance, temperature coefficient, and operating range. Higher power-rated components are functionally compatible in applications designed for lower power ratings, as they provide additional thermal margin. This is a unidirectional substitution; the lower-rated part cannot replace the higher-rated part.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel packaging provides smaller quantities on cut tape segments, appropriate for lower-volume production or prototyping. Both packaging formats contain identical components; selection depends on production volume and assembly equipment compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: No. CRCW04024K22FKTD (Vishay Dale) is RoHS non-compliant and REACH affected. All other substitute parts listed are ROHS3 compliant and REACH unaffected. For new designs, ROHS3-compliant alternatives are recommended unless legacy component support is required.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts bearing this certification have undergone rigorous testing for reliability, temperature cycling, and performance stability under automotive operating conditions. AEC-Q200 qualified alternatives (ERJ-2RKF4221X, AC0402FR-074K22L, CRCW04024K22FKED, RMCF0402FT4K22) are suitable for automotive applications or applications requiring automotive-grade reliability.

Q: Can I substitute RC1005F4221CS with a part having different tolerance?

A: No. Tolerance is a critical electrical parameter. The RC1005F4221CS specifies ±1% tolerance. Substitutes must maintain identical ±1% tolerance to ensure circuit performance and compliance with design specifications. Parts with different tolerance ratings (such as ±5% or ±0.1%) are not acceptable substitutes.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. Components rated MSL 1 do not require special moisture-controlled storage, handling, or baking procedures prior to assembly. All parts listed maintain MSL 1 rating, ensuring consistent handling requirements across substitution options.

Q: Are the physical dimensions identical across all substitute parts?

A: Yes. All substitute parts maintain the 0402 (1005 Metric) package specification with dimensions of 0.039" L x 0.020" W (1.00mm x 0.50mm). Maximum seated height is 0.016" (0.40mm) for most parts, with AC0402FR-074K22L specified at 0.015" (0.37mm). These minor height variations are within standard PCB assembly tolerances and do not affect interchangeability.

Q: Which substitute part has the highest inventory availability?

A: RC0402FR-074K22L (YAGEO) has the highest inventory with 180,261 pieces in stock, followed by ERJ-2RKF4221X (Panasonic) with 198,415 pieces. Both represent strong supply availability for procurement planning.