RC1005F4531CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F4531CS is a 4.53 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 construction 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 necessary to address supply chain continuity, inventory optimization, and application-specific requirements such as automotive qualification or enhanced power ratings.

Key Parameters

Parameter	Value	Specification
Resistance Value	4.53 kOhms	Core electrical specification
Tolerance	±1%	Precision grade
Power Rating	0.063W (1/16W)	Thermal dissipation capacity
Package Type	0402 (1005 Metric)	Physical form factor
Composition	Thick Film	Construction technology
Temperature Coefficient	±100ppm/°C	Stability characteristic
Operating Temperature Range	-55°C to 155°C	Environmental limits
Terminations	2	Connection points
RoHS Status	ROHS3 Compliant	Environmental regulation
Moisture Sensitivity Level	MSL 1 (Unlimited)	Handling requirement

Substitute Part Grouping Explanation

Substitute parts for the RC1005F4531CS are classified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Parameters (Must Match):

Resistance value: 4.53 kOhms
Tolerance: ±1%
Package: 0402 (1005 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C to 155°C
Terminations: 2
RoHS3 Compliance

Allowable Variation Parameters:

Power Rating: 0.063W (1/16W) baseline; 0.1W (1/10W) represents an upgrade
Features: Moisture Resistant is baseline; Automotive AEC-Q200 qualification is an additional feature
Manufacturer: Different manufacturers with identical specifications

Substitution Categories:

Direct Equivalents maintain all parameters including power rating and moisture resistance:

CR0402-FX-4531GLF (Bourns Inc.)
RC0402FR-074K53L (YAGEO)

Upgrade Substitute provides enhanced power rating while maintaining all other specifications:

ERJ-2RKF4531X (Panasonic Electronic Components) - 0.1W rating with AEC-Q200

Similar Substitutes add automotive qualification while maintaining baseline power rating:

AC0402FR-074K53L (YAGEO) - AEC-Q200 qualified, moisture resistant
CRCW04024K53FKED (Vishay Dale) - AEC-Q200 qualified
RMCF0402FT4K53 (Stackpole Electronics Inc) - AEC-Q200 qualified

Parameter Comparison

Parameter	RC1005F4531CS (Samsung)	CR0402-FX-4531GLF (Bourns)	RC0402FR-074K53L (YAGEO)	ERJ-2RKF4531X (Panasonic)	AC0402FR-074K53L (YAGEO)	CRCW04024K53FKED (Vishay)	RMCF0402FT4K53 (Stackpole)
Resistance	4.53 kOhms	4.53 kOhms	4.53 kOhms	4.53 kOhms	4.53 kOhms	4.53 kOhms	4.53 kOhms
Tolerance	±1%	±1%	±1%	±1%	±1%	±1%	±1%
Power Rating	0.063W (1/16W)	0.063W (1/16W)	0.063W (1/16W)	0.1W (1/10W)	0.063W (1/16W)	0.063W (1/16W)	0.063W (1/16W)
Package	0402 (1005 Metric)	0402 (1005 Metric)	0402 (1005 Metric)	0402 (1005 Metric)	0402 (1005 Metric)	0402 (1005 Metric)	0402 (1005 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C to 155°C	-55°C to 155°C	-55°C to 155°C	-55°C to 155°C	-55°C to 155°C	-55°C to 155°C	-55°C to 155°C
Size (L x W)	0.039" x 0.020" (1.00mm x 0.50mm)	0.039" x 0.020" (1.00mm x 0.50mm)	0.039" x 0.020" (1.00mm x 0.50mm)	0.039" x 0.020" (1.00mm x 0.50mm)	0.039" x 0.020" (1.00mm x 0.50mm)	0.039" x 0.020" (1.00mm x 0.50mm)	0.039" x 0.020" (1.00mm x 0.50mm)
Height (Max)	0.016" (0.40mm)	0.016" (0.40mm)	0.016" (0.40mm)	0.016" (0.40mm)	0.015" (0.37mm)	0.016" (0.40mm)	0.016" (0.40mm)
Moisture Resistant	Yes	No	Yes	No	Yes	No	No
AEC-Q200	No	No	No	Yes	Yes	Yes	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Non-Automotive Applications):

Use CR0402-FX-4531GLF (Bourns Inc.) or RC0402FR-074K53L (YAGEO) when direct electrical and mechanical equivalence is required. Both parts maintain identical specifications to the RC1005F4531CS including 0.063W power rating and ROHS3 compliance. RC0402FR-074K53L provides the additional benefit of moisture resistant construction matching the original part specification.

For Automotive Applications:

Select from ERJ-2RKF4531X (Panasonic), AC0402FR-074K53L (YAGEO), CRCW04024K53FKED (Vishay Dale), or RMCF0402FT4K53 (Stackpole Electronics Inc) when AEC-Q200 automotive qualification is required. All four parts meet automotive standards while maintaining the 4.53 kOhms ±1% specification and 0402 package format.

For Enhanced Thermal Performance:

ERJ-2RKF4531X (Panasonic Electronic Components) provides 0.1W (1/10W) power rating, representing a 58% increase over the baseline 0.063W rating. This upgrade is suitable for applications requiring higher power dissipation capacity while maintaining all other electrical characteristics and AEC-Q200 qualification.

For Moisture-Sensitive Environments:

AC0402FR-074K53L (YAGEO) combines moisture resistant construction with AEC-Q200 automotive qualification, providing dual environmental protection benefits.

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-4531GLF replace RC1005F4531CS in all applications?

A: CR0402-FX-4531GLF is electrically and mechanically equivalent to RC1005F4531CS with identical 4.53 kOhms ±1% resistance, 0.063W power rating, 0402 package, and operating temperature range. The primary difference is the absence of moisture resistant construction in the Bourns part. For applications where moisture resistance is not specified, direct substitution is valid.

Q: What is the difference between the baseline RC1005F4531CS and the ERJ-2RKF4531X upgrade?

A: ERJ-2RKF4531X maintains all electrical specifications (4.53 kOhms ±1%, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range) and package format (0402) but provides enhanced power rating of 0.1W (1/10W) compared to 0.063W (1/16W). Additionally, ERJ-2RKF4531X includes AEC-Q200 automotive qualification. This upgrade is suitable for applications requiring higher thermal dissipation capacity.

Q: Are all substitute parts suitable for automotive applications?

A: No. Only ERJ-2RKF4531X (Panasonic), AC0402FR-074K53L (YAGEO), CRCW04024K53FKED (Vishay Dale), and RMCF0402FT4K53 (Stackpole Electronics Inc) carry AEC-Q200 automotive qualification. CR0402-FX-4531GLF (Bourns) and RC0402FR-074K53L (YAGEO) are suitable for general industrial and consumer applications but lack automotive certification.

Q: Does package height variation affect PCB assembly compatibility?

A: AC0402FR-074K53L has a maximum seated height of 0.015" (0.37mm), while all other parts including RC1005F4531CS specify 0.016" (0.40mm). This 0.001" (0.03mm) difference is within standard PCB assembly tolerances and does not affect pick-and-place equipment compatibility or reflow soldering processes for 0402 package format.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. All listed parts, including RC1005F4531CS and all substitutes, can be stored at room temperature without desiccant packaging and do not require baking before soldering. This simplifies inventory management and manufacturing logistics.

Q: Can RC0402FR-074K53L be used as a direct replacement for moisture-sensitive applications?

A: Yes. RC0402FR-074K53L includes moisture resistant construction matching the RC1005F4531CS specification. Both parts maintain identical 4.53 kOhms ±1% resistance, 0.063W power rating, 0402 package, and MSL 1 rating. RC0402FR-074K53L is a direct functional equivalent for moisture-sensitive environments.

Q: What inventory considerations apply when selecting substitute parts?

A: Current inventory levels vary significantly: RC1005F4531CS (706 pcs), CR0402-FX-4531GLF (28,137 pcs), RC0402FR-074K53L (42,181 pcs), ERJ-2RKF4531X (127,763 pcs), AC0402FR-074K53L (30,522 pcs), CRCW04024K53FKED (48,056 pcs), and RMCF0402FT4K53 (179,654 pcs). Higher inventory levels may support extended lead time requirements and volume production schedules.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts including CR0402-FX-4531GLF, RC0402FR-074K53L, ERJ-2RKF4531X, AC0402FR-074K53L, CRCW04024K53FKED, and RMCF0402FT4K53 maintain ROHS3 compliance matching the RC1005F4531CS specification. All parts are suitable for applications requiring environmental regulation compliance.

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