RC5025J122CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025J122CS is a 1.2 kOhms ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated for 0.667W (2/3W) power dissipation in a 2010 (5025 Metric) surface mount package. This component is moisture resistant and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements permit tolerance relaxation, power rating increases, or when alternative manufacturers provide superior inventory availability or automotive-grade certifications while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Substitution Relevance
Resistance	1.2 kOhms	Must match exactly
Tolerance	±5%	Can upgrade to tighter tolerance (±1%)
Power Rating	0.667W (2/3W)	Can upgrade to higher rating (0.75W, 3/4W)
Package / Case	2010 (5025 Metric)	Must match exactly
Composition	Thick Film	Must match exactly
Temperature Coefficient	±100ppm/°C	Must match exactly
Operating Temperature	-55°C ~ 155°C	Must match or exceed range
RoHS Status	ROHS3 Compliant	Must maintain compliance
Moisture Sensitivity Level	MSL 1 (Unlimited)	Must match or improve

Substitute Part Grouping Explanation

Substitution logic for the RC5025J122CS is based on the following allowed parameter variations:

Resistance Value: All substitute parts maintain 1.2 kOhms resistance. This parameter is non-negotiable for functional equivalence.

Tolerance: The main part specifies ±5% tolerance. Substitute parts with ±1% tolerance (RC2010FK-071K2L, CRCW20101K20FKEF, RMCF2010FT1K20) represent upgrades that provide tighter tolerance specifications while remaining functionally compatible.

Power Rating: The main part is rated for 0.667W (2/3W). Substitute parts rated for 0.75W (3/4W) provide increased power dissipation capability, allowing operation in higher thermal stress conditions while maintaining the same physical footprint.

Package / Case: All parts use the 2010 (5025 Metric) package with identical dimensions (0.197" L x 0.098" W / 5.00mm x 2.50mm). This ensures mechanical and electrical compatibility on printed circuit boards.

Composition & Features: All parts are thick film resistors with moisture resistance. Automotive-grade parts (AC2010JK-071K2L, CRCW20101K20FKEF, RMCF2010FT1K20) include AEC-Q200 certification, which is an additional qualification not present in the main part.

Temperature Coefficient & Operating Range: All parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating range, ensuring thermal performance equivalence.

Compliance: All substitute parts maintain ROHS3 compliance and MSL 1 rating, preserving environmental and moisture handling requirements.

Parameter Comparison

Parameter	RC5025J122CS (Main)	AC2010JK-071K2L	RC2010FK-071K2L	RC2010JK-071K2L	CRCW20101K20FKEF	RMCF2010FT1K20
Manufacturer	Samsung Electro-Mechanics	YAGEO	YAGEO	YAGEO	Vishay Dale	Stackpole Electronics Inc
Resistance	1.2 kOhms	1.2 kOhms	1.2 kOhms	1.2 kOhms	1.2 kOhms	1.2 kOhms
Tolerance	±5%	±5%	±1%	±5%	±1%	±1%
Power Rating	0.667W (2/3W)	0.75W (3/4W)	0.75W (3/4W)	0.75W (3/4W)	0.75W (3/4W)	0.75W (3/4W)
Package / Case	2010 (5025 Metric)	2010 (5025 Metric)	2010 (5025 Metric)	2010 (5025 Metric)	2010 (5025 Metric)	2010 (5025 Metric)
Composition	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
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Size / Dimension	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)
Height - Seated (Max)	0.026" (0.66mm)	0.026" (0.65mm)	0.026" (0.65mm)	0.026" (0.65mm)	0.028" (0.70mm)	0.028" (0.70mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)	MSL 1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active
Automotive Certification	None	AEC-Q200	None	None	AEC-Q200	AEC-Q200

Engineering Selection Recommendations

Direct Upgrade Path (Tolerance & Power Enhancement):

RC2010JK-071K2L (YAGEO) provides a direct upgrade maintaining ±5% tolerance while increasing power rating to 0.75W (3/4W). This part is suitable for applications where the original 0.667W rating is marginal and tolerance requirements remain unchanged. Inventory availability is 4,300 units.

Precision Upgrade Path (Tighter Tolerance):

RC2010FK-071K2L (YAGEO) upgrades tolerance to ±1% while increasing power rating to 0.75W (3/4W). This substitution is appropriate for circuits requiring improved resistance accuracy. Inventory availability is 1,617 units.

Automotive-Grade Substitutes:

AC2010JK-071K2L (YAGEO) combines AEC-Q200 automotive certification with ±5% tolerance and 0.75W power rating. This part is specified for automotive applications requiring qualified component traceability. Inventory availability is 7,836 units.

CRCW20101K20FKEF (Vishay Dale) provides AEC-Q200 certification with ±1% tolerance and 0.75W power rating. This part offers the highest precision specification with automotive qualification. Inventory availability is 59,428 units, providing superior supply chain security.

RMCF2010FT1K20 (Stackpole Electronics Inc) delivers AEC-Q200 certification with ±1% tolerance and 0.75W power rating. This part is suitable for automotive applications requiring precision specifications. Inventory availability is 8,021 units.

Selection Criteria:

Choose RC2010JK-071K2L when tolerance and power requirements match the upgrade specification and YAGEO sourcing is preferred.

Choose RC2010FK-071K2L when ±1% tolerance is required and non-automotive applications permit YAGEO sourcing.

Choose AC2010JK-071K2L when automotive AEC-Q200 qualification is required with ±5% tolerance specification.

Choose CRCW20101K20FKEF when automotive AEC-Q200 qualification is required with ±1% tolerance specification and maximum inventory availability is prioritized.

Choose RMCF2010FT1K20 when automotive AEC-Q200 qualification is required with ±1% tolerance specification and Stackpole sourcing is preferred.

Frequently Asked Questions (FAQ)

Q: Can RC2010JK-071K2L replace RC5025J122CS in all applications?

A: RC2010JK-071K2L is functionally compatible with RC5025J122CS. Both parts maintain 1.2 kOhms resistance, ±5% tolerance, and identical package dimensions. The substitute provides increased power rating (0.75W vs. 0.667W), which is a non-limiting upgrade. Mechanical fit is equivalent with negligible height variation (0.65mm vs. 0.66mm).

Q: What is the difference between the YAGEO and Vishay Dale substitutes?

A: YAGEO RC2010JK-071K2L maintains ±5% tolerance matching the original part specification. Vishay Dale CRCW20101K20FKEF provides ±1% tolerance, representing tighter accuracy. Both include automotive AEC-Q200 certification in the AC2010JK-071K2L (YAGEO) and CRCW20101K20FKEF (Vishay Dale) variants. Selection depends on tolerance requirements and preferred supplier.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (RC2010JK-071K2L, RC2010FK-071K2L, AC2010JK-071K2L, CRCW20101K20FKEF, RMCF2010FT1K20) maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity level, matching the original RC5025J122CS specifications.

Q: Can I use a ±1% tolerance part where ±5% is specified?

A: Yes. Tighter tolerance specifications are functionally compatible with circuits designed for ±5% tolerance. Parts RC2010FK-071K2L, CRCW20101K20FKEF, and RMCF2010FT1K20 provide ±1% tolerance and are suitable for applications originally specified with ±5% tolerance. This represents an upgrade in accuracy.

Q: What is the significance of AEC-Q200 certification?

A: AEC-Q200 is an automotive industry qualification standard. Parts AC2010JK-071K2L, CRCW20101K20FKEF, and RMCF2010FT1K20 carry this certification, indicating qualification for automotive applications. The original RC5025J122CS does not include this certification. AEC-Q200 certification is required for automotive designs but is not necessary for general industrial or consumer applications.

Q: Are there height differences between substitute parts?

A: Seated height varies slightly. RC5025J122CS, AC2010JK-071K2L, RC2010FK-071K2L, and RC2010JK-071K2L specify maximum height of 0.026" (0.65-0.66mm). CRCW20101K20FKEF and RMCF2010FT1K20 specify 0.028" (0.70mm). This 0.04mm difference is within typical PCB assembly tolerances and does not affect mechanical compatibility.

Q: Which substitute offers the best inventory availability?

A: CRCW20101K20FKEF (Vishay Dale) provides 59,428 units in stock, significantly exceeding other options. This part is suitable when supply chain security and immediate availability are prioritized. RC2010JK-071K2L (YAGEO) offers 4,300 units, and AC2010JK-071K2L (YAGEO) provides 7,836 units.

Q: Can I substitute based on power rating alone?

A: No. Power rating is one of multiple parameters determining substitution compatibility. All substitute parts maintain identical resistance (1.2 kOhms), package (2010 / 5025 Metric), composition (thick film), and temperature specifications. Power rating upgrade from 0.667W to 0.75W is permitted because it does not reduce capability. Tolerance and automotive certification are independent selection criteria.

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