RC1005F303CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F303CS is a 30 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 unlimited moisture sensitivity level (MSL 1). The part is RoHS3 compliant and REACH unaffected, suitable for general-purpose electronic applications requiring precision resistive elements in compact surface-mount form factors.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative sourcing improves supply chain resilience, or when design requirements necessitate enhanced specifications such as automotive-grade qualification or increased power handling capability.

Substiute Parts

RC1005F303CS

Samsung Electro-MechanicsIn Stock: 751RC1005F303CS Datasheet

Current PartRFQ

CR0402-FX-3002GLF

Bourns Inc.In Stock: 87519CR0402-FX-3002GLF Datasheet

DirectRFQ

CRG0402F30K

TE Connectivity Passive ProductIn Stock: 20648CRG0402F30K Datasheet

DirectRFQ

RC0402FR-0730KL

YAGEOIn Stock: 183393RC0402FR-0730KL Datasheet

DirectRFQ

ERJ-2RKF3002X

Panasonic Electronic ComponentsIn Stock: 285282ERJ-2RKF3002X Datasheet

UpgradeRFQ

AC0402FR-0730KL

YAGEOIn Stock: 288394AC0402FR-0730KL Datasheet

SimilarRFQ

AF0402FR-0730KL

YAGEOIn Stock: 19821AF0402FR-0730KL Datasheet

SimilarRFQ

CRCW040230K0FKED

Vishay DaleIn Stock: 155741CRCW040230K0FKED Datasheet

SimilarRFQ

RMCF0402FT30K0

Stackpole Electronics IncIn Stock: 145769RMCF0402FT30K0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the RC1005F303CS is based strictly on electrical and mechanical parameter equivalence. All substitute parts must satisfy the following mandatory criteria:

Electrical Parameters (Non-Negotiable):

• Resistance: 30 kOhms
• Tolerance: ±1%
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C to 155°C minimum

Mechanical Parameters (Non-Negotiable):

• Package: 0402 (1005 Metric)
• Composition: Thick Film
• Terminations: 2
• Physical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm)

Power Rating (Flexible):

• Minimum acceptable: 0.063W (1/16W)
• Higher ratings (0.1W/1/10W) are acceptable as upgrades

Compliance Parameters (Non-Negotiable):

• RoHS3 Compliant
• REACH Unaffected

Substitute parts are categorized as Direct Equivalents, Upgrades, or Similar variants based on feature additions (automotive qualification, anti-sulfur treatment) while maintaining all core electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Specifications):

CR0402-FX-3002GLF (Bourns Inc.) and CRG0402F30K (TE Connectivity Passive Product) are direct electrical and mechanical equivalents to RC1005F303CS. Both parts match all core specifications including 30 kOhms resistance, ±1% tolerance, 0.063W power rating, 0402 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both are RoHS3 compliant with MSL 1 rating. These parts are suitable for direct substitution in applications where the original Samsung part is unavailable.

RC0402FR-0730KL (YAGEO) is a direct equivalent with identical electrical specifications and includes moisture-resistant construction matching the original part's feature set. This part provides equivalent performance with high inventory availability (183,354 units).

Upgrade Options (Enhanced Specifications):

ERJ-2RKF3002X (Panasonic Electronic Components) provides upgraded power rating of 0.1W (1/10W) compared to the original 0.063W specification, while maintaining all other electrical parameters. This part includes automotive AEC-Q200 qualification. The increased power rating provides thermal margin in applications subject to higher dissipation conditions.

Automotive-Grade Alternatives (AEC-Q200 Qualified):

AC0402FR-0730KL, AF0402FR-0730KL (YAGEO), CRCW040230K0FKED (Vishay Dale), and RMCF0402FT30K0 (Stackpole Electronics Inc) are all automotive-grade AEC-Q200 qualified alternatives. These parts maintain identical electrical specifications to the original part while adding automotive qualification. AF0402FR-0730KL includes additional anti-sulfur treatment. These parts are suitable for applications requiring automotive-grade component certification.

All substitute parts listed maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original specification.

Frequently Asked Questions (FAQ)

Q: Can I substitute CR0402-FX-3002GLF for RC1005F303CS in my design?

A: Yes. CR0402-FX-3002GLF is a direct equivalent meeting all electrical and mechanical specifications: 30 kOhms ±1%, 0.063W power rating, 0402 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, RoHS3 compliant, and MSL 1. No design changes are required.

Q: What is the difference between RC0402FR-0730KL and CR0402-FX-3002GLF?

A: Both parts are electrically and mechanically equivalent to RC1005F303CS. RC0402FR-0730KL (YAGEO) includes moisture-resistant construction, matching the original part's feature set. CR0402-FX-3002GLF (Bourns) does not list specific moisture-resistant features. Both are suitable direct substitutes; selection depends on sourcing availability and packaging preference (RC0402FR-0730KL is available in Cut Tape/Digi-Reel; CR0402-FX-3002GLF is available in Tape & Reel).

Q: Can I use ERJ-2RKF3002X as a substitute?

A: Yes, with the understanding that ERJ-2RKF3002X provides an upgraded power rating of 0.1W (1/10W) versus the original 0.063W specification. All other electrical parameters match exactly. This upgrade is acceptable in applications where the original power rating is sufficient, as higher power rating provides additional thermal margin. The part includes automotive AEC-Q200 qualification.

Q: Are automotive-grade parts (AEC-Q200) compatible with non-automotive applications?

A: Yes. Automotive-grade parts such as AC0402FR-0730KL, AF0402FR-0730KL, CRCW040230K0FKED, and RMCF0402FT30K0 meet or exceed all specifications required for general-purpose applications. AEC-Q200 qualification indicates enhanced reliability testing and quality assurance. These parts are suitable for any application requiring 30 kOhms ±1% 0402 resistors.

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

A: MSL 1 indicates the lowest moisture sensitivity level, meaning the component can be stored indefinitely without moisture bake-out requirements prior to soldering. All listed substitute parts carry MSL 1 rating, ensuring identical moisture handling requirements to the original RC1005F303CS.

Q: Can I mix different manufacturers' parts in the same design?

A: Yes. All listed substitute parts meet identical electrical and mechanical specifications for the 30 kOhms ±1% 0402 resistor function. Mixing manufacturers is acceptable from an electrical standpoint. However, design documentation should reflect the approved part list to maintain traceability and ensure consistent sourcing practices.

Q: What is the significance of the 0402 package designation?

A: 0402 (1005 Metric) is the standardized package size: 0.039" length × 0.020" width (1.00mm × 0.50mm). All listed substitute parts use identical 0402 package dimensions and footprint, ensuring direct PCB compatibility without layout modifications.

Q: Does ROHS3 compliance differ between manufacturers?

A: No. All listed parts are ROHS3 compliant, meeting identical regulatory requirements for restricted substance elimination. ROHS3 compliance is uniform across all substitute parts listed.