RC1005F8251CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F8251CS is an 8.25 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0402 (1005 Metric) package format. This surface mount device is rated for 0.063W (1/16W) power dissipation with a temperature coefficient of ±100ppm/°C and operates across the -55°C to 155°C temperature range. The component features moisture-resistant construction and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific feature enhancements such as automotive qualification or anti-sulfur protection.

Substiute Parts

RC1005F8251CS

Samsung Electro-MechanicsIn Stock: 1123RC1005F8251CS Datasheet

Current PartRFQ

CR0402-FX-8251GLF

Bourns Inc.In Stock: 95445CR0402-FX-8251GLF Datasheet

DirectRFQ

RC0402FR-078K25L

YAGEOIn Stock: 750799RC0402FR-078K25L Datasheet

DirectRFQ

ERJ-2RKF8251X

Panasonic Electronic ComponentsIn Stock: 150336ERJ-2RKF8251X Datasheet

UpgradeRFQ

AC0402FR-078K25L

YAGEOIn Stock: 41164AC0402FR-078K25L Datasheet

SimilarRFQ

AF0402FR-078K25L

YAGEOIn Stock: 10756AF0402FR-078K25L Datasheet

SimilarRFQ

CRCW04028K25FKED

Vishay DaleIn Stock: 37529CRCW04028K25FKED Datasheet

SimilarRFQ

CRCW04028K25FKTD

Vishay DaleIn Stock: 11069CRCW04028K25FKTD Datasheet

SimilarRFQ

RMCF0402FT8K25

Stackpole Electronics IncIn Stock: 233451RMCF0402FT8K25 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC1005F8251CS are classified based on strict electrical and mechanical parameter matching:

Direct Equivalents maintain identical specifications across all critical parameters: 8.25 kOhms resistance, ±1% tolerance, 0.063W power rating, 0402 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. These parts are interchangeable in standard applications.

Upgrade Options provide enhanced power rating (0.1W vs. 0.063W) or automotive qualification (AEC-Q200) while maintaining core electrical specifications and package compatibility. These are suitable for applications requiring higher thermal margin or automotive-grade reliability.

Feature-Enhanced Variants include automotive AEC-Q200 certification, anti-sulfur protection, or moisture-resistant construction. These maintain all core electrical parameters but add environmental or application-specific certifications.

All substitute parts share the following critical parameters with the main part:

• Resistance value: 8.25 kOhms
• Tolerance: ±1%
• Package: 0402 (1005 Metric)
• Temperature coefficient: ±100ppm/°C
• Operating temperature: -55°C ~ 155°C
• Composition: Thick Film
• Terminations: 2

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection: CR0402-FX-8251GLF (Bourns Inc.) and RC0402FR-078K25L (YAGEO) are direct functional equivalents to the RC1005F8251CS. Both maintain identical electrical specifications and ROHS3 compliance. RC0402FR-078K25L offers higher inventory availability (750,750 pcs) and includes moisture-resistant construction matching the original part.

Upgrade Path for Enhanced Reliability: ERJ-2RKF8251X (Panasonic Electronic Components) provides increased power rating (0.1W vs. 0.063W) with automotive AEC-Q200 qualification. This upgrade is suitable for applications requiring higher thermal margin or automotive-grade component certification while maintaining ROHS3 compliance.

Automotive-Qualified Alternatives: AC0402FR-078K25L, AF0402FR-078K25L, CRCW04028K25FKED, and RMCF0402FT8K25 all carry AEC-Q200 automotive qualification. AF0402FR-078K25L adds anti-sulfur protection for corrosive environments. All maintain ROHS3 compliance except CRCW04028K25FKTD, which is RoHS non-compliant and REACH-affected.

Compliance Considerations: For applications requiring ROHS3 compliance and REACH unaffected status, select from: RC1005F8251CS, CR0402-FX-8251GLF, RC0402FR-078K25L, ERJ-2RKF8251X, AC0402FR-078K25L, AF0402FR-078K25L, CRCW04028K25FKED, or RMCF0402FT8K25. Avoid CRCW04028K25FKTD in regulated applications.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-8251GLF replace RC1005F8251CS in all applications? A: Yes. CR0402-FX-8251GLF maintains identical electrical specifications (8.25 kΩ, ±1%, 0.063W), package format (0402), temperature range (-55°C to 155°C), and ROHS3 compliance. Direct substitution is electrically and mechanically compatible.

Q: What is the difference between RC0402FR-078K25L and RC1005F8251CS? A: Both parts are electrically identical (8.25 kΩ, ±1%, 0.063W, 0402 package). The primary difference is manufacturer (YAGEO vs. Samsung Electro-Mechanics) and packaging format (Cut Tape & Digi-Reel vs. Tape & Reel). RC0402FR-078K25L offers significantly higher inventory availability.

Q: When should ERJ-2RKF8251X be selected instead of the original part? A: ERJ-2RKF8251X provides 0.1W power rating compared to 0.063W in the original part, offering higher thermal margin. Select this upgrade for applications with elevated ambient temperatures, higher current density, or when automotive AEC-Q200 qualification is required.

Q: Are automotive-qualified parts (AEC-Q200) backward compatible with standard applications? A: Yes. Automotive-qualified parts (AC0402FR-078K25L, AF0402FR-078K25L, CRCW04028K25FKED, RMCF0402FT8K25) maintain identical core electrical specifications and are mechanically compatible. AEC-Q200 certification indicates enhanced reliability testing and is not restrictive for non-automotive use.

Q: What does anti-sulfur protection in AF0402FR-078K25L provide? A: Anti-sulfur protection protects the component from corrosion in environments with hydrogen sulfide exposure or high-sulfur industrial atmospheres. This feature does not affect electrical performance in standard environments.

Q: Why is CRCW04028K25FKTD marked as RoHS non-compliant? A: CRCW04028K25FKTD does not meet ROHS3 compliance requirements and is REACH-affected. This part should not be used in applications subject to RoHS or REACH regulations. Use CRCW04028K25FKED (ROHS3 compliant variant) instead.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance? A: No. Packaging format affects only handling, storage, and assembly logistics. Electrical and mechanical specifications remain identical. Select based on manufacturing equipment compatibility and inventory management requirements.

Q: Can parts with different power ratings be intermixed in the same circuit? A: Yes, if thermal conditions permit. ERJ-2RKF8251X (0.1W) can replace 0.063W parts with improved thermal margin. However, 0.063W parts should not replace 0.1W parts in high-power applications.