RC2012F8451CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012F8451CS is an 8.45 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with moisture-resistant characteristics and unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and REACH unaffected, suitable for general industrial and consumer applications requiring precision resistive elements.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, inventory limitations, or when design requirements permit alternative manufacturers meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Resistance	8.45 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RC2012F8451CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 8.45 kOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Package: 0805 (2012 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
Number of terminations: 2
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

All substitute parts listed meet these mandatory parameters. Variations in physical dimensions (height, length, width) within standard tolerances do not affect functional substitutability. Differences in packaging format (Tape & Reel versus Cut Tape) represent logistical variations only and do not impact electrical performance or mechanical fit in standard PCB assembly processes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Height Max (mm)	Features	Product Status
RC2012F8451CS	Samsung Electro-Mechanics	8.45 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.65	Moisture Resistant	Active
ERJ-6ENF8451V	Panasonic Electronic Components	8.45 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.70	Automotive AEC-Q200	Active
KTR10EZPF8451	Rohm Semiconductor	8.45 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.65	Automotive AEC-Q200, High Voltage	Active
RC0805FR-078K45L	YAGEO	8.45 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.60	Moisture Resistant	Active
RMCF0805FT8K45	Stackpole Electronics Inc	8.45 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.65	Automotive AEC-Q200	Active
CRCW08058K45FKEA	Vishay Dale	8.45 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.50	Automotive AEC-Q200	Active
MCR10ERTF8451	Rohm Semiconductor	8.45 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.65	Standard Thick Film	Discontinued at DiGi Electronics

Engineering Selection Recommendations

Direct Substitutes (Active Status, Identical Specifications):

ERJ-6ENF8451V (Panasonic), KTR10EZPF8451 (Rohm), RC0805FR-078K45L (YAGEO), and RMCF0805FT8K45 (Stackpole) are fully qualified direct substitutes. All maintain Active product status and meet ROHS3 compliance. Selection among these parts should be based on availability, lead time, and packaging format requirements. Panasonic ERJ-6ENF8451V and Stackpole RMCF0805FT8K45 carry AEC-Q200 automotive qualification, suitable for applications requiring automotive-grade reliability. Rohm KTR10EZPF8451 includes high voltage capability in addition to AEC-Q200 rating. YAGEO RC0805FR-078K45L and Samsung RC2012F8451CS both feature moisture-resistant composition without automotive qualification, appropriate for industrial and consumer applications.

Alternative Substitute (Limited Availability):

CRCW08058K45FKEA (Vishay Dale) is functionally equivalent with AEC-Q200 automotive qualification and the lowest maximum seated height (0.50mm). This part is suitable for space-constrained PCB designs. Current inventory is lower than other alternatives.

Discontinued Part (Not Recommended for New Designs):

MCR10ERTF8451 (Rohm) is discontinued at DiGi Electronics and should not be selected for new product designs despite meeting all electrical specifications. Existing inventory is minimal (897 Pcs).

Frequently Asked Questions (FAQ)

Q: Can I substitute RC2012F8451CS with any of the listed equivalent parts without circuit redesign?

A: Yes. All listed direct substitutes (ERJ-6ENF8451V, KTR10EZPF8451, RC0805FR-078K45L, RMCF0805FT8K45, and CRCW08058K45FKEA) are electrically and mechanically equivalent. They share identical resistance value (8.45 kOhms), tolerance (±1%), power rating (0.125W), package (0805), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). No circuit modifications are required.

Q: What is the difference between the main part and substitutes with AEC-Q200 rating?

A: AEC-Q200 is an automotive qualification standard indicating enhanced reliability testing and quality assurance for automotive applications. The main part (RC2012F8451CS) does not carry this rating. Substitutes with AEC-Q200 (ERJ-6ENF8451V, KTR10EZPF8451, RMCF0805FT8K45, CRCW08058K45FKEA) are suitable for both automotive and general industrial applications. Selection depends on application requirements, not functional compatibility.

Q: Are there physical dimension differences that affect PCB assembly?

A: Maximum seated height varies slightly: RC2012F8451CS (0.65mm), ERJ-6ENF8451V (0.70mm), KTR10EZPF8451 (0.65mm), RC0805FR-078K45L (0.60mm), RMCF0805FT8K45 (0.65mm), CRCW08058K45FKEA (0.50mm). These variations fall within standard 0805 package tolerances and do not affect standard PCB assembly processes or component placement. For space-constrained designs, CRCW08058K45FKEA offers the lowest profile.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. All listed parts carry MSL 1 classification, meaning they can be stored indefinitely under normal conditions without special handling or pre-reflow baking procedures.

Q: Why is MCR10ERTF8451 listed if it is discontinued?

A: MCR10ERTF8451 is documented as a historical equivalent meeting all electrical and mechanical specifications. However, it is discontinued at DiGi Electronics and should not be selected for new designs due to limited availability and supply uncertainty.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect substitutability?

A: No. Packaging format represents a logistical variation only. Tape & Reel (TR) and Cut Tape (CT) formats contain identical components with different presentation for automated assembly. Selection should be based on manufacturing equipment compatibility and volume requirements, not electrical or mechanical performance.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance status of the main part RC2012F8451CS.

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