RC1005F30R9CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F30R9CS is a 30.9 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This component is rated for 0.063W (1/16W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and carries ROHS3 compliance with MSL Level 1 rating. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct circuit board compatibility.

Substiute Parts

RC1005F30R9CS

Samsung Electro-MechanicsIn Stock: 1207RC1005F30R9CS Datasheet

Current PartRFQ

RC0402FR-0730R9L

YAGEOIn Stock: 50919RC0402FR-0730R9L Datasheet

DirectRFQ

ERJ-2RKF30R9X

Panasonic Electronic ComponentsIn Stock: 149864ERJ-2RKF30R9X Datasheet

UpgradeRFQ

CRCW040230R9FKED

Vishay DaleIn Stock: 19088CRCW040230R9FKED Datasheet

SimilarRFQ

RMCF0402FT30R9

Stackpole Electronics IncIn Stock: 10590RMCF0402FT30R9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F30R9CS is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Resistance value: 30.9 Ohms
• Tolerance: ±1%
• Package format: 0402 (1005 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Status: ROHS3 Compliant

Allowable Variation:

• Power rating: Substitute parts may equal or exceed the 0.063W specification. Parts rated at 0.1W (1/10W) or higher are acceptable as they provide equivalent or superior performance in the same package footprint.

Substitute Classification:

Direct Equivalent: RC0402FR-0730R9L (YAGEO) and RMCF0402FT30R9 (Stackpole Electronics Inc) and CRCW040230R9FKED (Vishay Dale) match all electrical and mechanical parameters identically to the main part.

Upgrade Equivalent: ERJ-2RKF30R9X (Panasonic Electronic Components) matches all parameters with the exception of power rating (0.1W vs. 0.063W), representing a higher power capability within the same package.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original RC1005F30R9CS component.

Direct Substitution (No Design Changes Required): RC0402FR-0730R9L, CRCW040230R9FKED, and RMCF0402FT30R9 are electrically and mechanically identical to the main part. These components are suitable for direct replacement in existing designs without circuit modification.

Upgrade Substitution (Enhanced Performance): ERJ-2RKF30R9X provides identical electrical performance with increased power rating (0.1W vs. 0.063W) within the same 0402 package footprint. This component carries AEC-Q200 automotive qualification. Selection of this part is appropriate when enhanced thermal margin or automotive-grade reliability is required.

Automotive Applications: CRCW040230R9FKED, RMCF0402FT30R9, and ERJ-2RKF30R9X all carry AEC-Q200 automotive qualification. These parts are suitable for automotive circuit applications where automotive-grade component certification is specified.

Inventory and Availability: RC0402FR-0730R9L (YAGEO) offers the highest inventory availability at 50,864 pieces. ERJ-2RKF30R9X (Panasonic) provides 149,802 pieces. CRCW040230R9FKED (Vishay Dale) and RMCF0402FT30R9 (Stackpole) offer 19,042 and 10,500 pieces respectively.

Frequently Asked Questions (FAQ)

Q: Can RC0402FR-0730R9L be used as a direct replacement for RC1005F30R9CS?

A: Yes. RC0402FR-0730R9L matches all electrical specifications (30.9 Ohms ±1%), power rating (0.063W), package format (0402), temperature range (-55°C ~ 155°C), and compliance requirements (ROHS3). No circuit modifications are required.

Q: What is the difference between the main part and ERJ-2RKF30R9X?

A: ERJ-2RKF30R9X is identical in all parameters except power rating, which is 0.1W (1/10W) compared to 0.063W (1/16W) for the main part. The higher power rating provides additional thermal capability within the same package footprint. ERJ-2RKF30R9X also carries AEC-Q200 automotive qualification.

Q: Are all substitute parts suitable for automotive applications?

A: CRCW040230R9FKED, RMCF0402FT30R9, and ERJ-2RKF30R9X carry AEC-Q200 automotive qualification. RC0402FR-0730R9L does not specify automotive qualification. Component selection should align with application requirements.

Q: Do all substitute parts have the same package dimensions?

A: Yes. All substitute parts use the 0402 (1005 Metric) package format with identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) and maximum seated height of 0.016" (0.40mm). All parts are compatible with the same PCB footprint.

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

A: MSL Level 1 indicates unlimited shelf life without moisture absorption concerns. All listed parts, including the main component, carry MSL Level 1 rating, eliminating moisture-related handling restrictions.

Q: Can a higher power-rated substitute affect circuit performance?

A: No. ERJ-2RKF30R9X with 0.1W rating operates identically to the 0.063W-rated main part in circuit applications. The higher power rating provides additional thermal margin and does not alter electrical behavior at equivalent power dissipation levels.

Q: Are there any compliance differences between substitute parts?

A: All parts are ROHS3 compliant and REACH unaffected. Three substitute parts (ERJ-2RKF30R9X, CRCW040230R9FKED, RMCF0402FT30R9) carry additional AEC-Q200 automotive qualification. The main part does not specify automotive qualification.