AF0805FR-072K49L Equivalent & Substitute Parts

Part Overview

The AF0805FR-072K49L is a 2.49 kOhms ±1% 0.125W (1/8W) chip resistor in 0805 (2012 Metric) package manufactured by YAGEO. This thick film resistor features anti-sulfur coating and automotive AEC-Q200 qualification, designed for automotive and industrial applications requiring enhanced reliability in harsh environments. The part is currently active in production with 712 units in stock.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from multiple qualified manufacturers while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	2.49 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
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

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

Resistance Value: 2.49 kOhms (exact match required)
Tolerance: ±1% (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)
Automotive Qualification: AEC-Q200 (required for automotive applications)
RoHS Compliance: ROHS3 Compliant (required for regulatory compliance)

Substitute parts are grouped into two categories based on power rating:

Category 1: 0.125W (1/8W) Rating — Direct functional equivalents with identical power dissipation capability. These parts are suitable for direct replacement in designs where the original 1/8W specification is required.

Category 2: 0.5W (1/2W) Rating — Higher power rating variants. These parts maintain all other electrical and mechanical parameters but provide increased power handling capability. Selection of higher-rated parts is permissible when circuit design allows, as they do not degrade performance in applications rated for lower power.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Op Temp Range	AEC-Q200	RoHS3	Height Max
AF0805FR-072K49L	YAGEO	2.49 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	0.60mm
RC0805FR-072K49L	YAGEO	2.49 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	No	Yes	0.60mm
CRCW08052K49FKEA	Vishay Dale	2.49 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	0.50mm
CRCW08052K49FKEAHP	Vishay Dale	2.49 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	0.50mm
CRCW08052K49FKTA	Vishay Dale	2.49 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Yes	No	0.50mm
ERJ-6ENF2491V	Panasonic Electronic Components	2.49 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	0.70mm
RCS08052K49FKEA	Vishay Dale	2.49 kΩ	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	0.50mm
RMCF0805FT2K49	Stackpole Electronics Inc	2.49 kΩ	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	0.65mm

Engineering Selection Recommendations

Preferred Direct Equivalents (0.125W, AEC-Q200, ROHS3 Compliant):

CRCW08052K49FKEA (Vishay Dale) — Meets all electrical and mechanical specifications with reduced height profile (0.50mm). Active product status with 31,572 units in stock.
ERJ-6ENF2491V (Panasonic Electronic Components) — Meets all electrical and mechanical specifications. Active product status with highest inventory availability (135,274 units).
RMCF0805FT2K49 (Stackpole Electronics Inc) — Meets all electrical and mechanical specifications. Active product status with 135,998 units in stock.

Alternative with Compliance Consideration:

CRCW08052K49FKTA (Vishay Dale) — Electrically equivalent but marked as RoHS non-compliant and REACH Affected. Use only when regulatory requirements do not mandate ROHS3 compliance.

Higher Power Rating Options (0.5W, AEC-Q200, ROHS3 Compliant):

CRCW08052K49FKEAHP (Vishay Dale) — Pulse withstanding variant with 0.5W rating. Suitable when circuit design permits higher power dissipation capability.
RCS08052K49FKEA (Vishay Dale) — Pulse withstanding variant with 0.5W rating. Active product status with 10,867 units in stock.

Not Recommended:

RC0805FR-072K49L (YAGEO) — Lacks AEC-Q200 automotive qualification, making it unsuitable for automotive applications requiring this certification.

Frequently Asked Questions (FAQ)

Q: Can I use a 0.5W (1/2W) rated resistor in place of the 0.125W (1/8W) original part?

A: Yes. A higher power rating does not degrade circuit performance. The 0.5W variants (CRCW08052K49FKEAHP, RCS08052K49FKEA) maintain identical electrical characteristics and mechanical compatibility. Use higher-rated parts when supply availability favors them or when circuit design permits.

Q: What is the significance of the AEC-Q200 rating?

A: AEC-Q200 certification indicates the resistor meets automotive industry reliability standards for temperature cycling, moisture resistance, and long-term stability. For automotive applications, this certification is mandatory. Substitute parts must retain this qualification.

Q: Are there height differences between substitute parts?

A: Yes. The original AF0805FR-072K49L has a maximum seated height of 0.60mm. Substitute parts range from 0.50mm to 0.70mm. Verify PCB layout clearance requirements before selecting parts with different height profiles, particularly in space-constrained designs.

Q: Why is RC0805FR-072K49L not recommended as a substitute?

A: While electrically identical, RC0805FR-072K49L lacks AEC-Q200 automotive qualification. For applications requiring automotive-grade components, this part does not meet specification requirements.

Q: What is the difference between standard and pulse-withstanding variants?

A: Pulse-withstanding variants (CRCW08052K49FKEAHP, RCS08052K49FKEA) are designed to tolerate transient overvoltage events. Standard variants provide stable performance under normal operating conditions. Select pulse-withstanding types only when circuit design includes transient voltage events.

Q: Is ROHS3 compliance required for all applications?

A: ROHS3 compliance is mandatory for products sold in the European Union and many other regulated markets. CRCW08052K49FKTA is marked as non-compliant. Verify regulatory requirements for your end application before selecting non-compliant alternatives.

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

A: Yes. All recommended substitute parts meet identical electrical and mechanical specifications. Multi-source qualification is standard practice for supply chain resilience. Ensure all selected parts carry required certifications (AEC-Q200, ROHS3) for your application.

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