ASC1206-2KF1 Equivalent & Substitute Parts

Part Overview

The ASC1206-2KF1 is a 2 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Riedon. This component features anti-sulfur coating, automotive AEC-Q200 qualification, and moisture resistance, making it suitable for automotive and industrial applications requiring high reliability. The part is currently active in production with substantial inventory availability.

Substitute parts become necessary due to supply chain constraints, manufacturing discontinuations, or specific application requirements that may benefit from alternative manufacturer specifications while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	2 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package	1206 (3216 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)

Substitute Part Grouping Explanation

Substitution eligibility for the ASC1206-2KF1 is determined by strict equivalence across the following parameters:

Resistance value: 2 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.25W minimum (equal or higher acceptable)
Package: 1206 (3216 Metric) (exact match required)
Composition: Thick film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C to 155°C minimum (equal or wider acceptable)
Compliance: ROHS3 compliant (required for direct substitution)
Moisture sensitivity: MSL 1 (exact match required)

All identified substitute parts meet these criteria. Parts with higher power ratings (0.75W) are listed separately due to different thermal characteristics and are suitable only when application requirements permit increased power dissipation capability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	AEC-Q200	RoHS Status	MSL	Packaging Type
ASC1206-2KF1	Riedon	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Tape & Reel
RK73H2BRTTD2001F	KOA Speer Electronics	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Tape & Reel
AC1206FR-072KL	YAGEO	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Cut Tape & Digi-Reel
CR1206-FX-2001ELF	Bourns Inc.	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Tape & Reel
CRCW12062K00FKEA	Vishay Dale	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Cut Tape & Digi-Reel
CRCW12062K00FKEAC	Vishay Dale	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	No	ROHS3	1	Tape & Reel
CRCW12062K00FKEAHP	Vishay Dale	2 kOhms	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Cut Tape & Digi-Reel
CRCW12062K00FKEB	Vishay Dale	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Tape & Reel
CRCW12062K00FKEC	Vishay Dale	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	ROHS3	1	Tape & Reel
CRCW12062K00FKTA	Vishay Dale	2 kOhms	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Yes	RoHS non-compliant	1	Tape & Reel

Engineering Selection Recommendations

Primary Substitutes (Full Equivalence)

RK73H2BRTTD2001F (KOA Speer Electronics), AC1206FR-072KL (YAGEO), CRCW12062K00FKEA (Vishay Dale), CRCW12062K00FKEB (Vishay Dale), and CRCW12062K00FKEC (Vishay Dale) are direct electrical and mechanical equivalents to the ASC1206-2KF1. All maintain identical resistance, tolerance, power rating, package dimensions, and temperature specifications. All are ROHS3 compliant with AEC-Q200 automotive qualification (except CR1206-FX-2001ELF and CRCW12062K00FKEAC which lack AEC-Q200 rating). These parts are suitable for direct board-level substitution without design modification.

Alternative with Enhanced Power Rating

CRCW12062K00FKEAHP (Vishay Dale) provides 0.75W power rating in the same 1206 package. This part is suitable for applications where increased thermal margin or pulse withstanding capability is required, provided circuit design accommodates the higher power dissipation specification.

Compliance Consideration

CRCW12062K00FKTA (Vishay Dale) is RoHS non-compliant and REACH affected. This part is not suitable for applications requiring ROHS3 compliance or REACH compliance verification.

Packaging Considerations

AC1206FR-072KL and CRCW12062K00FKEA are supplied in Cut Tape & Digi-Reel packaging, suitable for automated pick-and-place assembly. RK73H2BRTTD2001F, CR1206-FX-2001ELF, CRCW12062K00FKEAC, CRCW12062K00FKEB, CRCW12062K00FKEC, and CRCW12062K00FKTA are supplied in Tape & Reel packaging.

Frequently Asked Questions (FAQ)

Q: Can CRCW12062K00FKEAHP (0.75W) be used as a direct replacement for ASC1206-2KF1 (0.25W)?

A: CRCW12062K00FKEAHP is electrically and mechanically compatible with ASC1206-2KF1. The higher power rating does not create incompatibility; however, circuit design must accommodate the different thermal characteristics. Use this part only when application requirements permit or benefit from increased power dissipation capability.

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

A: Tape & Reel packaging supplies components on continuous carrier tape suitable for high-volume automated assembly. Cut Tape & Digi-Reel packaging provides components on cut tape segments, suitable for lower-volume production or manual assembly. Both formats contain identical components; packaging selection depends on assembly process requirements.

Q: Are all substitute parts AEC-Q200 qualified?

A: No. CR1206-FX-2001ELF (Bourns) and CRCW12062K00FKEAC (Vishay Dale) do not carry AEC-Q200 qualification. For automotive applications requiring AEC-Q200 compliance, use RK73H2BRTTD2001F, AC1206FR-072KL, CRCW12062K00FKEA, CRCW12062K00FKEB, CRCW12062K00FKEC, CRCW12062K00FKEAHP, or CRCW12062K00FKTA.

Q: Why is CRCW12062K00FKTA listed if it is RoHS non-compliant?

A: CRCW12062K00FKTA is included for reference in applications where RoHS compliance is not required. For applications requiring ROHS3 compliance, this part is not suitable.

Q: What determines if a part can substitute for ASC1206-2KF1?

A: Substitution requires exact match on resistance (2 kOhms), tolerance (±1%), package (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C minimum), and moisture sensitivity level (MSL 1). Power rating must be equal to or greater than 0.25W. ROHS3 compliance is required for direct substitution in regulated applications.

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