Equivalent & Substitute Parts for RC1005F8451CS

Part Overview

The RC1005F8451CS is an 8.45 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0402 (1005 Metric) package format. This component 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 part is ROHS3 compliant, REACH unaffected, and features moisture-resistant construction with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative certifications such as automotive AEC-Q200 qualification or upgraded power ratings.

Substiute Parts

RC1005F8451CS

Samsung Electro-MechanicsIn Stock: 1187RC1005F8451CS Datasheet

Current PartRFQ

CR0402-FX-8451GLF

Bourns Inc.In Stock: 8350CR0402-FX-8451GLF Datasheet

DirectRFQ

RC0402FR-078K45L

YAGEOIn Stock: 122753RC0402FR-078K45L Datasheet

DirectRFQ

ERJ-2RKF8451X

Panasonic Electronic ComponentsIn Stock: 115591ERJ-2RKF8451X Datasheet

UpgradeRFQ

AC0402FR-078K45L

YAGEOIn Stock: 6218AC0402FR-078K45L Datasheet

SimilarRFQ

CRCW04028K45FKED

Vishay DaleIn Stock: 132858CRCW04028K45FKED Datasheet

SimilarRFQ

RMCF0402FT8K45

Stackpole Electronics IncIn Stock: 40079RMCF0402FT8K45 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F8451CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 8.45 kOhms
• Tolerance: ±1%
• Package / Case: 0402 (1005 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Sensitivity Level: 1 (Unlimited)
• RoHS Status: ROHS3 Compliant

Allowable Variation:

• Power rating: 0.063W (1/16W) or higher
• Features: Additional certifications (AEC-Q200) or enhanced properties (moisture resistance) do not disqualify substitution

Substitute parts are categorized as follows:

Direct Substitutes: Parts with identical electrical specifications and power rating (0.063W).

Upgrade Substitutes: Parts with identical electrical specifications but higher power rating (0.1W or greater), suitable for applications requiring enhanced thermal margin.

Similar Substitutes: Parts with identical electrical specifications and automotive AEC-Q200 certification, applicable to automotive and high-reliability applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Non-Automotive Applications):

CR0402-FX-8451GLF (Bourns Inc.) and RC0402FR-078K45L (YAGEO) are direct electrical and mechanical equivalents to RC1005F8451CS. Both maintain identical power ratings, tolerance, and temperature specifications. RC0402FR-078K45L offers the highest inventory availability (122,698 pcs) and includes moisture-resistant construction matching the original part. CR0402-FX-8451GLF provides an alternative from a different manufacturer with substantial inventory (8,304 pcs).

For Automotive and High-Reliability Applications:

AC0402FR-078K45L (YAGEO), CRCW04028K45FKED (Vishay Dale), and RMCF0402FT8K45 (Stackpole Electronics Inc) are qualified to automotive AEC-Q200 standard. These parts maintain identical electrical specifications and power ratings while providing automotive-grade reliability certification. CRCW04028K45FKED offers the highest inventory (132,754 pcs) among automotive-qualified options.

For Enhanced Thermal Performance:

ERJ-2RKF8451X (Panasonic Electronic Components) provides an upgrade path with 0.1W (1/10W) power rating, delivering 58% higher power dissipation capacity than the original 0.063W specification. This part is automotive AEC-Q200 qualified and maintains all other electrical parameters. Use this part when thermal margin enhancement is required without changing circuit impedance.

Compliance and Regulatory Status:

All substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory status of RC1005F8451CS. All parts carry MSL 1 (Unlimited) moisture sensitivity rating, permitting unrestricted storage and handling.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-8451GLF replace RC1005F8451CS in a production assembly?

A: Yes. CR0402-FX-8451GLF is a direct substitute with identical resistance (8.45 kOhms), tolerance (±1%), power rating (0.063W), package (0402), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between RC0402FR-078K45L and AC0402FR-078K45L?

A: Both are YAGEO 8.45 kOhms ±1% 0402 resistors with identical electrical specifications. AC0402FR-078K45L includes automotive AEC-Q200 certification and moisture-resistant construction. RC0402FR-078K45L includes moisture-resistant construction but lacks automotive certification. Select AC0402FR-078K45L for automotive applications; either part is acceptable for general industrial use.

Q: Can ERJ-2RKF8451X be used as a direct replacement for RC1005F8451CS?

A: Yes, with the following consideration: ERJ-2RKF8451X has a higher power rating (0.1W versus 0.063W). This upgrade is electrically and mechanically compatible and provides enhanced thermal performance. The higher power rating does not affect circuit operation in applications designed for 0.063W components. Use ERJ-2RKF8451X when additional thermal margin is beneficial.

Q: Are all substitute parts available in Tape & Reel packaging?

A: CR0402-FX-8451GLF, RC0402FR-078K45L, AC0402FR-078K45L, CRCW04028K45FKED, and RMCF0402FT8K45 are supplied in Tape & Reel (TR) packaging. ERJ-2RKF8451X is supplied in Cut Tape (CT) & Digi-Reel® packaging. Verify packaging compatibility with your assembly process requirements.

Q: Which substitute part has the highest inventory availability?

A: RC0402FR-078K45L (YAGEO) has the highest inventory at 122,698 pcs. For automotive-qualified parts, CRCW04028K45FKED (Vishay Dale) offers the highest availability at 132,754 pcs.

Q: Do all substitute parts meet the same moisture sensitivity requirements?

A: Yes. All substitute parts carry MSL 1 (Unlimited) moisture sensitivity rating, identical to RC1005F8451CS. No special moisture control measures are required for storage or handling.

Q: Can RMCF0402FT8K45 be used in place of RC1005F8451CS?

A: Yes. RMCF0402FT8K45 (Stackpole Electronics Inc) is a direct electrical and mechanical equivalent with automotive AEC-Q200 certification. It maintains identical resistance, tolerance, power rating, package, and temperature specifications.