RC6432F78R7CS Equivalent & Substitute Parts Reference

Part Overview

The RC6432F78R7CS is a 78.7 Ohm ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package. This thick film resistor features moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with 823 units available in inventory.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package category. Alternative sources provide design flexibility, supply chain redundancy, and access to parts with different certifications or production statuses.

Substiute Parts

RC6432F78R7CS

Samsung Electro-MechanicsIn Stock: 874RC6432F78R7CS Datasheet

Current PartRFQ

CRCW251278R7FKEG

Vishay DaleIn Stock: 2866CRCW251278R7FKEG Datasheet

SimilarRFQ

ERJ-1TNF78R7U

Panasonic Electronic ComponentsIn Stock: 4670ERJ-1TNF78R7U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC6432F78R7CS is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 78.7 Ohms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 1W (exact match)
• Temperature coefficient: ±100ppm/°C (exact match)
• Operating temperature range: -55°C ~ 155°C (exact match)

Mechanical Compatibility Requirements:

• Package / Case: 2512 (6432 Metric) (exact match)
• Composition: Thick Film (exact match)
• Number of terminations: 2 (exact match)

Compliance Requirements:

• RoHS3 Compliant (maintained across all substitutes)
• Moisture Sensitivity Level: 1 (Unlimited) (maintained across all substitutes)

All identified substitute parts meet these criteria. Variations in physical dimensions (length, width, height) within the 2512 package specification, packaging format (Tape & Reel vs. bulk), and additional certifications (such as AEC-Q200 automotive qualification) do not disqualify substitution but represent secondary differentiators for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Status):

The CRCW251278R7FKEG from Vishay Dale is the preferred substitute for new designs. This part maintains full electrical and mechanical equivalence to the RC6432F78R7CS while offering active production status, higher inventory availability (2791 units), and AEC-Q200 automotive qualification. The Tape & Reel packaging format supports automated assembly processes typical in high-volume manufacturing environments.

Secondary Selection (Legacy Applications):

The ERJ-1TNF78R7U from Panasonic Electronic Components provides complete electrical and mechanical compatibility but carries a "Not For New Designs" product status. This part is suitable only for replacement, repair, or continuation of existing production runs where design changes are not feasible. The highest inventory level (4652 units) may provide short-term supply advantages for legacy applications.

Primary Part Retention:

The RC6432F78R7CS remains a valid choice for applications where Samsung Electro-Mechanics sourcing is specified or preferred. Active production status and moisture-resistant features support continued use in new designs.

Frequently Asked Questions (FAQ)

Q: Can CRCW251278R7FKEG be used as a direct replacement for RC6432F78R7CS in existing designs?

A: Yes. Both parts share identical electrical specifications (78.7 Ohms, ±1%, 1W, ±100ppm/°C) and operate across the same temperature range (-55°C to 155°C). Both are packaged in the 2512 (6432 Metric) case with thick film construction. The primary difference is packaging format (Tape & Reel vs. bulk) and the addition of AEC-Q200 automotive certification on the Vishay part, which does not prevent substitution.

Q: Why is ERJ-1TNF78R7U marked "Not For New Designs"?

A: This designation indicates that Panasonic has discontinued active development and optimization of this part number. While the part remains electrically and mechanically equivalent and is currently in inventory, it is intended for legacy applications and repair scenarios only. New designs should prioritize parts with "Active" status such as RC6432F78R7CS or CRCW251278R7FKEG.

Q: Are there dimensional differences between these three parts?

A: Minor dimensional variations exist within the 2512 package specification. RC6432F78R7CS measures 0.248" L × 0.126" W (6.30mm × 3.20mm) with 0.026" max height. CRCW251278R7FKEG measures 0.248" L × 0.124" W (6.30mm × 3.15mm) with 0.028" max height. ERJ-1TNF78R7U measures 0.252" L × 0.126" W (6.40mm × 3.20mm) with 0.028" max height. These variations remain within 2512 package tolerances and do not affect PCB layout compatibility.

Q: Do all three parts meet RoHS and REACH compliance requirements?

A: Yes. All three parts are ROHS3 Compliant and REACH Unaffected. All carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

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

A: AEC-Q200 is an automotive industry qualification standard. The CRCW251278R7FKEG meets this standard, making it suitable for automotive applications requiring enhanced reliability testing and traceability. The RC6432F78R7CS and ERJ-1TNF78R7U do not carry this certification but remain fully functional for non-automotive or less stringent applications.

Q: Which part should be selected for high-volume automated assembly?

A: CRCW251278R7FKEG is optimized for automated assembly due to its Tape & Reel packaging format. This format integrates with standard pick-and-place equipment and reduces manual handling. RC6432F78R7CS in bulk packaging requires manual placement or custom feeding systems.