RC2012F3921CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F3921CS is a 3.92 kOhms ±1% 0.125W thick film chip resistor manufactured by Samsung Electro-Mechanics in 0805 (2012 Metric) package format. This component is classified as Active product status with moisture-resistant characteristics and ROHS3 compliance. The part is supplied in Tape & Reel packaging with 930 pieces currently in stock inventory.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain constraints occur, or when design requirements necessitate alternative manufacturer specifications while maintaining electrical and mechanical compatibility.

Substiute Parts

RC2012F3921CS

Samsung Electro-MechanicsIn Stock: 980RC2012F3921CS Datasheet

Current PartRFQ

CR0805-FX-3921ELF

Bourns Inc.In Stock: 53654CR0805-FX-3921ELF Datasheet

DirectRFQ

ERJ-6ENF3921V

Panasonic Electronic ComponentsIn Stock: 63114ERJ-6ENF3921V Datasheet

DirectRFQ

KTR10EZPF3921

Rohm SemiconductorIn Stock: 10482KTR10EZPF3921 Datasheet

DirectRFQ

RC0805FR-073K92L

YAGEOIn Stock: 22926RC0805FR-073K92L Datasheet

DirectRFQ

RMCF0805FT3K92

Stackpole Electronics IncIn Stock: 131345RMCF0805FT3K92 Datasheet

DirectRFQ

CRCW08053K92FKEA

Vishay DaleIn Stock: 36291CRCW08053K92FKEA Datasheet

SimilarRFQ

CRCW08053K92FKEB

Vishay DaleIn Stock: 21056CRCW08053K92FKEB Datasheet

SimilarRFQ

MCR10ERTF3921

Rohm SemiconductorIn Stock: 829MCR10ERTF3921 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC2012F3921CS is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Resistance value: 3.92 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.125W / 1/8W (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Number of terminations: 2 (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• MSL Rating: 1 (Unlimited) (exact match required)

Allowable Variations:

• Manufacturer identity (different manufacturers permitted)
• Packaging format (Tape & Reel or Cut Tape acceptable)
• Physical height dimensions (within component tolerance)
• Product status (Active or Discontinued at DiGi Electronics)
• Additional features (Moisture Resistant, Automotive AEC-Q200, High Voltage) are allowable enhancements

All substitute parts listed maintain identical electrical performance and mechanical compatibility with the primary part number RC2012F3921CS.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria (Based on Product Status and Compliance):

For applications requiring Active product status with current manufacturing support, the following parts are recommended as direct substitutes:

1. CR0805-FX-3921ELF (Bourns Inc.) - Active status, moisture-resistant specification, 53,571 units in inventory
2. ERJ-6ENF3921V (Panasonic Electronic Components) - Active status, Automotive AEC-Q200 rated, 63,073 units in inventory
3. RC0805FR-073K92L (YAGEO) - Active status, moisture-resistant specification, 22,886 units in inventory
4. RMCF0805FT3K92 (Stackpole Electronics Inc) - Active status, Automotive AEC-Q200 rated, 131,297 units in inventory (highest inventory availability)
5. CRCW08053K92FKEA (Vishay Dale) - Active status, Automotive AEC-Q200 rated, 36,241 units in inventory
6. KTR10EZPF3921 (Rohm Semiconductor) - Active status, Automotive AEC-Q200 and High Voltage rated, 10,403 units in inventory

Secondary Selection (Discontinued Status):

Parts with Discontinued at DiGi Electronics status (CRCW08053K92FKEB, MCR10ERTF3921) maintain full electrical and mechanical equivalence but have limited future availability. These are suitable only when existing inventory is confirmed available through alternative distribution channels.

Application-Specific Considerations:

• For automotive applications requiring AEC-Q200 certification: ERJ-6ENF3921V, RMCF0805FT3K92, CRCW08053K92FKEA, or KTR10EZPF3921
• For high-voltage circuit applications: KTR10EZPF3921
• For general industrial applications with moisture exposure: CR0805-FX-3921ELF or RC0805FR-073K92L
• For maximum supply chain availability: RMCF0805FT3K92 (131,297 units)

All listed substitutes maintain ROHS3 compliance, MSL 1 (Unlimited) rating, and identical electrical performance specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC2012F3921CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts maintain identical resistance value (3.92 kOhms), tolerance (±1%), power rating (0.125W), package format (0805), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Direct substitution is electrically and mechanically compatible without circuit modification.

Q: What is the difference between parts marked "Active" and "Discontinued at DiGi Electronics"?

A: Active parts are currently manufactured and supported by their respective manufacturers with ongoing production. Discontinued at DiGi Electronics parts are no longer stocked by DiGi Electronics distribution but may remain available through alternative distributors or existing inventory. For new designs, Active status parts are recommended.

Q: Why do some substitute parts have different physical heights (0.50mm to 0.70mm)?

A: Physical height variation within the 0805 package specification does not affect electrical performance or PCB mounting compatibility. All listed parts conform to 0805 (2012 Metric) package dimensions and will mount correctly on standard 0805 footprints. Height differences are within component manufacturing tolerances.

Q: What does "Automotive AEC-Q200" certification mean?

A: AEC-Q200 is an automotive industry qualification standard for passive components. Parts bearing this certification (ERJ-6ENF3921V, KTR10EZPF3921, RMCF0805FT3K92, CRCW08053K92FKEA) have undergone additional reliability testing and are approved for automotive applications. Non-AEC-Q200 parts are suitable for general industrial and consumer applications.

Q: Can I use a part with "High Voltage" feature (KTR10EZPF3921) in a standard application?

A: Yes. High Voltage rated components are designed to withstand elevated voltage stress and represent an enhancement over standard specifications. They are fully compatible with standard applications and provide additional design margin.

Q: What is the significance of "Moisture Resistant" feature?

A: Moisture-resistant thick film construction (CR0805-FX-3921ELF, RC0805FR-073K92L, RC2012F3921CS) provides enhanced protection against humidity and moisture ingress. All listed parts maintain MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.

Q: Which substitute part has the highest inventory availability?

A: RMCF0805FT3K92 (Stackpole Electronics Inc) has the highest inventory with 131,297 units in stock, followed by ERJ-6ENF3921V (Panasonic) with 63,073 units.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the primary part RC2012F3921CS. REACH status is Unaffected for all parts.

Q: Can I mix different manufacturer parts in the same circuit board assembly?

A: Yes. All substitute parts are electrically and mechanically equivalent. Mixing different manufacturers on the same board is acceptable from a functional standpoint. However, for manufacturing consistency and traceability, using a single manufacturer part number per design is recommended.