RC5025F4991CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F4991CS is a 4.99 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.667W (2/3W) in a 2010 (5025 Metric) surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The part is designed for general industrial and consumer applications requiring moisture-resistant thick film construction.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical compatibility (package type, dimensions, termination count). Substitutes may include upgraded power ratings or automotive-grade certifications while maintaining core electrical parameters.

Substiute Parts

RC5025F4991CS

Samsung Electro-MechanicsIn Stock: 866RC5025F4991CS Datasheet

Current PartRFQ

AC2010FK-074K99L

YAGEOIn Stock: 3912AC2010FK-074K99L Datasheet

UpgradeRFQ

CRCW20104K99FKEF

Vishay DaleIn Stock: 5004CRCW20104K99FKEF Datasheet

SimilarRFQ

RMCF2010FT4K99

Stackpole Electronics IncIn Stock: 1654RMCF2010FT4K99 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC5025F4991CS are qualified based on the following criteria:

Electrical Compatibility Requirements:

• Resistance value: 4.99 kOhms (exact match)
• Tolerance: ±1% (exact match)
• Temperature coefficient: ±100ppm/°C (exact match)
• Operating temperature range: -55°C to 155°C (exact match or better)

Mechanical Compatibility Requirements:

• Package type: 2010 (5025 Metric) (exact match)
• Dimensions: 0.197" L x 0.098" W / 5.00mm x 2.50mm (exact match)
• Number of terminations: 2 (exact match)
• Height seated (max): ≤0.028" / ≤0.70mm (ensures PCB assembly compatibility)

Regulatory & Environmental Requirements:

• RoHS3 compliance (mandatory)
• MSL rating: 1 (Unlimited) or equivalent
• REACH unaffected status

Power Rating Consideration: Substitute parts with equal or higher power ratings (0.75W / 3/4W or greater) are acceptable as direct substitutes, as they provide equivalent or improved thermal performance while maintaining all other electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (Upgrade Path):

All three substitute parts—AC2010FK-074K99L (YAGEO), CRCW20104K99FKEF (Vishay Dale), and RMCF2010FT4K99 (Stackpole)—are qualified as direct substitutes for the RC5025F4991CS. Each substitute maintains identical electrical specifications (4.99 kOhms ±1%, ±100ppm/°C, -55°C to 155°C operating range) and mechanical compatibility (2010 package, 5.00mm x 2.50mm dimensions, 2 terminations).

The primary difference is an increased power rating of 0.75W (3/4W) compared to the original 0.667W (2/3W), which represents a performance upgrade. All substitutes are ROHS3 compliant with MSL 1 (Unlimited) rating, matching the original part's environmental specifications.

Automotive Applications:

For applications requiring automotive-grade components, AC2010FK-074K99L, CRCW20104K99FKEF, and RMCF2010FT4K99 all carry AEC-Q200 certification. The original RC5025F4991CS does not specify automotive qualification. Selection of an AEC-Q200 rated substitute is appropriate for automotive or high-reliability applications.

Inventory & Availability:

Current stock levels are: AC2010FK-074K99L (3,803 pcs), CRCW20104K99FKEF (4,900 pcs), and RMCF2010FT4K99 (1,636 pcs). All parts are available in Tape & Reel (TR) packaging for automated assembly.

Height Clearance Consideration:

The original RC5025F4991CS has a maximum seated height of 0.026" (0.66mm). Substitute parts AC2010FK-074K99L and CRCW20104K99FKEF have maximum seated heights of 0.026" (0.65mm) and 0.028" (0.70mm) respectively. Height differences of ±0.002" to ±0.004" are within standard PCB assembly tolerances and do not affect functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use AC2010FK-074K99L as a direct replacement for RC5025F4991CS?

A: Yes. AC2010FK-074K99L is a direct substitute. Both parts have identical resistance (4.99 kOhms), tolerance (±1%), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and package dimensions (2010 / 5.00mm x 2.50mm). The substitute has a higher power rating (0.75W vs. 0.667W), which is an improvement. Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between the original part and the substitute parts?

A: The primary electrical difference is power rating: RC5025F4991CS is rated at 0.667W (2/3W), while AC2010FK-074K99L, CRCW20104K99FKEF, and RMCF2010FT4K99 are all rated at 0.75W (3/4W). All other electrical parameters (resistance, tolerance, temperature coefficient, operating temperature) are identical. The substitute parts also include AEC-Q200 automotive certification, which the original part does not specify.

Q: Are there any height or dimensional concerns when substituting these parts?

A: No. All parts use the identical 2010 (5025 Metric) package with dimensions of 0.197" L x 0.098" W (5.00mm x 2.50mm). Maximum seated heights range from 0.026" to 0.028" (0.65mm to 0.70mm), which are within standard PCB assembly tolerances. These minor height variations do not affect PCB layout or component placement.

Q: Can I use these substitutes in automotive applications?

A: AC2010FK-074K99L, CRCW20104K99FKEF, and RMCF2010FT4K99 all carry AEC-Q200 automotive qualification. The original RC5025F4991CS does not specify automotive certification. For automotive applications, any of the three substitute parts is appropriate.

Q: What is the difference between YAGEO, Vishay Dale, and Stackpole versions?

A: All three manufacturers produce equivalent 4.99 kOhms ±1% 0.75W 2010 chip resistors with identical electrical and mechanical specifications. The differences are manufacturer-specific: YAGEO AC2010FK-074K99L, Vishay Dale CRCW20104K99FKEF, and Stackpole RMCF2010FT4K99. Selection can be based on inventory availability, supply chain preference, or lead time requirements. Current stock levels are: YAGEO (3,803 pcs), Vishay Dale (4,900 pcs), and Stackpole (1,636 pcs).

Q: Are all these parts RoHS3 compliant?

A: Yes. RC5025F4991CS and all three substitute parts (AC2010FK-074K99L, CRCW20104K99FKEF, RMCF2010FT4K99) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and REACH unaffected status.

Q: What packaging formats are available for the substitute parts?

A: All substitute parts are available in Tape & Reel (TR) packaging, suitable for automated pick-and-place assembly. The original RC5025F4991CS packaging format is not specified in the provided data.