RC3216F1781CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216F1781CS is a 1.78 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This thick film, moisture-resistant resistor operates across -55°C to 155°C and is ROHS3 compliant. Substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings to ensure direct functional equivalence in circuit applications.

Substiute Parts

RC3216F1781CS

Samsung Electro-MechanicsIn Stock: 944RC3216F1781CS Datasheet

Current PartRFQ

RC1206FR-071K78L

YAGEOIn Stock: 5370RC1206FR-071K78L Datasheet

DirectRFQ

CRCW12061K78FKEA

Vishay DaleIn Stock: 19485CRCW12061K78FKEA Datasheet

SimilarRFQ

ERJ-8ENF1781V

Panasonic Electronic ComponentsIn Stock: 121713ERJ-8ENF1781V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RC3216F1781CS are qualified based on the following criteria:

Electrical Equivalence: Resistance value of 1.78 kOhms with ±1% tolerance and 0.25W power rating are mandatory matching parameters.

Mechanical Compatibility: Package type 1206 (3216 Metric) with 2 terminations ensures physical interchangeability on printed circuit boards.

Environmental Specifications: Operating temperature range of -55°C to 155°C and temperature coefficient of ±100ppm/°C must be maintained.

Regulatory Compliance: ROHS3 compliance, MSL Level 1, and REACH Unaffected status are required for equivalent substitution.

Composition: Thick film construction is the specified technology for all qualified substitutes.

Parameter Comparison

Engineering Selection Recommendations

RC1206FR-071K78L (YAGEO): Direct substitute with active product status. Electrical and mechanical parameters are identical to the main part. Suitable for new designs and production applications.

CRCW12061K78FKEA (Vishay Dale): Direct substitute with active product status. Includes AEC-Q200 automotive qualification, providing additional reliability assurance for automotive and harsh environment applications. Mechanical dimensions are identical.

ERJ-8ENF1781V (Panasonic): Electrical and mechanical equivalence confirmed. Product status is "Not For New Designs," indicating this part is in mature phase. Use only for legacy system maintenance or replacement applications where existing inventory exists.

Frequently Asked Questions (FAQ)

Q: Can RC1206FR-071K78L replace RC3216F1781CS directly on the PCB?

A: Yes. Both parts share identical 1206 (3216 Metric) package dimensions, 2 terminations, and mounting footprint. No PCB redesign is required.

Q: What is the difference between the substitute parts?

A: All three substitutes meet the core electrical specifications (1.78 kOhms ±1%, 0.25W, ±100ppm/°C). CRCW12061K78FKEA includes AEC-Q200 automotive qualification. ERJ-8ENF1781V is not recommended for new designs. RC1206FR-071K78L is the preferred active alternative.

Q: Are there dimensional differences between these parts?

A: Minor variations exist in maximum seated height (0.60mm to 0.70mm range) and length (3.10mm to 3.20mm range), but all parts conform to 1206 package specifications and are mechanically interchangeable.

Q: Do all substitutes maintain the same temperature coefficient?

A: Yes. All qualified substitutes maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating range.

Q: Is moisture sensitivity the same across all parts?

A: Yes. All parts are MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Which substitute should be selected for automotive applications?

A: CRCW12061K78FKEA is qualified to AEC-Q200 automotive standard and is the appropriate selection for automotive circuit designs.