AC2010FK-07681RL Equivalent & Substitute Parts

Part Overview

The AC2010FK-07681RL is a 681 Ohm ±1% thick film chip resistor rated at 0.75W (3/4W) in a 2010 (5025 Metric) surface mount package. Manufactured by YAGEO, this component meets AEC-Q200 automotive qualification standards and features moisture-resistant construction suitable for automotive and industrial applications operating across -55°C to 155°C.

The part is currently in active production status. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, packaging format, and automotive compliance ratings. These alternatives provide design flexibility for procurement, inventory management, and supply chain continuity.

Key Parameters

Parameter	Specification
Resistance Value	681 Ohms
Tolerance	±1%
Power Rating	0.75W (3/4W)
Package / Case	2010 (5025 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)
Number of Terminations	2

Substitute Part Grouping Explanation

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

Resistance value: 681 Ohms
Tolerance: ±1%
Power rating: 0.75W (3/4W)
Package: 2010 (5025 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Automotive compliance: AEC-Q200
RoHS compliance: ROHS3
Moisture sensitivity: MSL 1

All identified substitute parts meet these criteria. Variations in maximum seated height (0.026" to 0.028") and packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) do not affect functional equivalence for standard PCB assembly processes.

Parameter Comparison

Manufacturer	Part Number	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	AEC-Q200	RoHS3	MSL	Product Status
YAGEO	AC2010FK-07681RL	681 Ω	±1%	0.75	2010	±100ppm/°C	-55 to 155°C	Yes	Yes	1	Active
KOA Speer Electronics	RK73H2HTTE6810F	681 Ω	±1%	0.75	2010	±100ppm/°C	-55 to 155°C	Yes	Yes	1	Active
Vishay Dale	CRCW2010681RFKEF	681 Ω	±1%	0.75	2010	±100ppm/°C	-55 to 155°C	Yes	Yes	1	Active
Panasonic Electronic Components	ERJ-12SF6810U	681 Ω	±1%	0.75	2010	±100ppm/°C	-55 to 155°C	Yes	Yes	1	Not For New Designs
Stackpole Electronics Inc	RMCF2010FT681R	681 Ω	±1%	0.75	2010	±100ppm/°C	-55 to 155°C	Yes	Yes	1	Active

Engineering Selection Recommendations

For new designs, select from parts with Active product status: RK73H2HTTE6810F (KOA Speer Electronics), CRCW2010681RFKEF (Vishay Dale), or RMCF2010FT681R (Stackpole Electronics Inc). These three alternatives maintain full AEC-Q200 automotive qualification and ROHS3 compliance identical to the primary part AC2010FK-07681RL.

The Panasonic ERJ-12SF6810U carries a "Not For New Designs" status and should be used only for legacy system maintenance or replacement applications where design continuity is required.

All substitute parts are functionally equivalent for applications requiring 681 Ohm ±1% thick film resistors in automotive-grade 2010 packages with -55°C to 155°C operating range.

Frequently Asked Questions (FAQ)

Q: Can I substitute AC2010FK-07681RL with RK73H2HTTE6810F in an existing design?

A: Yes. Both parts are electrically and mechanically equivalent, meeting identical specifications for resistance, tolerance, power rating, package dimensions, temperature coefficient, operating range, and AEC-Q200 automotive qualification. Maximum seated height differs by 0.002" (0.028" vs. 0.026"), which does not affect standard PCB assembly.

Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?

A: Both are surface mount packaging formats suitable for automated assembly. Tape & Reel is continuous reel packaging for high-volume production. Cut Tape & Digi-Reel is pre-cut tape format for smaller quantities or mixed-component orders. Electrical and mechanical performance is identical.

Q: Why is ERJ-12SF6810U marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development for this part number. It remains available for existing applications but should not be selected for new product designs. Use RK73H2HTTE6810F, CRCW2010681RFKEF, or RMCF2010FT681R for new designs.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification, meeting the same reliability and qualification standards as AC2010FK-07681RL.

Q: Can I mix different manufacturers' parts in the same assembly?

A: Yes. All substitute parts meet identical electrical specifications, tolerance, power rating, and package dimensions. Mixed sourcing is acceptable from an engineering standpoint, though procurement and quality control processes should account for multiple suppliers.

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