RC5025F6491CS Equivalent & Substitute Parts Reference

Part Overview

The RC5025F6491CS is a 6.49 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 2010 (5025 Metric) package format with 0.667W power rating. This component is classified as Active product status with moisture-resistant construction and ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package footprint and performance envelope.

Substiute Parts

RC5025F6491CS

Samsung Electro-MechanicsIn Stock: 1039RC5025F6491CS Datasheet

Current PartRFQ

CRCW20106K49FKEF

Vishay DaleIn Stock: 6191CRCW20106K49FKEF Datasheet

SimilarRFQ

ERJ-12SF6491U

Panasonic Electronic ComponentsIn Stock: 5803ERJ-12SF6491U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC5025F6491CS is determined by strict alignment of the following parameters:

Critical Matching Parameters:

• Resistance value: 6.49 kOhms
• Tolerance: ±1%
• Package format: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Number of terminations: 2

Allowable Variation:

• Power rating: Substitute parts may have equal or higher power rating (0.75W or greater is acceptable for 0.667W applications)
• Physical height: Minor variations within package specification are acceptable
• Packaging format: Original component uses cut tape; substitutes may use Tape & Reel (TR) format

Non-Substitutable Criteria:

• Resistance value deviation
• Tolerance deviation
• Package footprint change
• Temperature coefficient deviation
• Operating temperature range reduction

Parameter Comparison

Engineering Selection Recommendations

CRCW20106K49FKEF (Vishay Dale) is the primary substitute for RC5025F6491CS. This part maintains full electrical and mechanical compatibility with identical resistance, tolerance, temperature coefficient, and operating temperature range. The higher power rating of 0.75W provides additional thermal margin over the original 0.667W specification. CRCW20106K49FKEF carries ROHS3 compliance and AEC-Q200 automotive qualification, making it suitable for applications requiring enhanced reliability standards. The component is in Active product status with 6179 units in stock.

ERJ-12SF6491U (Panasonic Electronic Components) meets all critical electrical and mechanical parameters but carries two significant restrictions. The product status is listed as "Not For New Designs," indicating this part is in end-of-life phase. Additionally, ERJ-12SF6491U is RoHS non-compliant, which may conflict with regulatory requirements in applications subject to ROHS3 mandates. This part should be selected only when legacy system compatibility is required and RoHS compliance is not a design constraint. The component is available with 5712 units in stock.

Selection between substitute parts should prioritize CRCW20106K49FKEF for new designs and applications requiring RoHS compliance. ERJ-12SF6491U is restricted to legacy system maintenance where RoHS non-compliance is acceptable.

Frequently Asked Questions (FAQ)

Q: Can CRCW20106K49FKEF replace RC5025F6491CS in existing designs?

A: Yes. CRCW20106K49FKEF is electrically and mechanically equivalent. The 0.75W power rating exceeds the original 0.667W specification, providing additional thermal capacity. Physical dimensions remain identical at 5.00mm x 2.50mm footprint. Both components operate across -55°C to 155°C with ±100ppm/°C temperature coefficient.

Q: What is the difference between the packaging formats?

A: RC5025F6491CS is supplied in cut tape format. CRCW20106K49FKEF and ERJ-12SF6491U are supplied in Tape & Reel (TR) format. Both formats contain identical components; packaging format affects only handling and assembly automation compatibility, not electrical or mechanical performance.

Q: Is ERJ-12SF6491U suitable for new product designs?

A: No. ERJ-12SF6491U carries "Not For New Designs" product status, indicating Panasonic has discontinued this part for new applications. Additionally, RoHS non-compliance may violate regulatory requirements. This part is restricted to legacy system maintenance only.

Q: Are there height differences between substitute parts?

A: Minor height variation exists. RC5025F6491CS maximum seated height is 0.026" (0.66mm). Both CRCW20106K49FKEF and ERJ-12SF6491U have maximum seated height of 0.028" (0.70mm). This 0.02mm difference is within standard PCB assembly tolerances and does not affect functionality or compatibility.

Q: Do all substitute parts meet RoHS compliance?

A: CRCW20106K49FKEF is ROHS3 compliant. ERJ-12SF6491U is RoHS non-compliant. RC5025F6491CS is ROHS3 compliant. Applications subject to RoHS mandates must use either RC5025F6491CS or CRCW20106K49FKEF.

Q: What is the significance of AEC-Q200 qualification on CRCW20106K49FKEF?

A: AEC-Q200 is an automotive industry reliability standard. CRCW20106K49FKEF carries this qualification, indicating enhanced testing and quality assurance suitable for automotive and high-reliability applications. RC5025F6491CS does not list AEC-Q200 qualification.