CRCW08052K49FKTC Equivalent & Substitute Parts

Part Overview

The CRCW08052K49FKTC is a 2.49 kOhm ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Vishay Dale. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is currently active in production. Equivalent and substitute parts are necessary to address supply chain availability, packaging format requirements, compliance updates, or design optimization needs 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 to 155°C
Automotive Rating	AEC-Q200
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the CRCW08052K49FKTC is determined by strict equivalence across the following parameters: resistance value (2.49 kOhms), tolerance (±1%), power rating (0.125W), package type (0805 / 2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). All substitute parts listed maintain these core electrical and mechanical specifications. Variations in product status, RoHS compliance, packaging format (Tape & Reel vs. Cut Tape), height tolerance, and manufacturer-specific features do not affect functional interchangeability in circuit applications where these parameters are met.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Product Status	RoHS Status	Height Max (mm)
CRCW08052K49FKTC	Vishay Dale	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Active	Non-compliant	0.50
CRCW08052K49FKEA	Vishay Dale	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Active	ROHS3 Compliant	0.50
CRCW08052K49FKEB	Vishay Dale	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Discontinued	ROHS3 Compliant	0.50
CRCW08052K49FKEAC	Vishay Dale	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Active	Not specified	0.60
ERJ-6ENF2491V	Panasonic Electronic Components	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Active	ROHS3 Compliant	0.70
RMCF0805FT2K49	Stackpole Electronics Inc	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Active	ROHS3 Compliant	0.65
KTR10EZPF2491	Rohm Semiconductor	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Active	ROHS3 Compliant	0.65
CR0805-FX-2491ELF	Bourns Inc.	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Active	ROHS3 Compliant	0.60
TRR10EZPF2491	Rohm Semiconductor	2.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	Obsolete	ROHS3 Compliant	0.65

Engineering Selection Recommendations

For applications requiring active production status and current availability, CRCW08052K49FKEA, ERJ-6ENF2491V, RMCF0805FT2K49, KTR10EZPF2491, and CR0805-FX-2491ELF are suitable direct substitutes. CRCW08052K49FKEA provides the closest match as a Vishay Dale product with identical specifications and minimal height variation (0.50mm). ERJ-6ENF2491V and RMCF0805FT2K49 offer high inventory availability from alternative manufacturers with ROHS3 compliance. KTR10EZPF2491 includes high voltage capability as an additional feature. CRCW08052K49FKEB and TRR10EZPF2491 are not recommended for new designs due to discontinued or obsolete status. CRCW08052K49FKEAC is available as an alternative with marginally increased height (0.60mm). Height variations across substitute parts (0.50mm to 0.70mm) must be evaluated against PCB assembly constraints and design clearances.

Frequently Asked Questions (FAQ)

Q: Can CRCW08052K49FKEA be used as a direct replacement for CRCW08052K49FKTC?

A: Yes. Both parts share identical electrical specifications (2.49 kΩ, ±1%, 0.125W, 0805 package, ±100ppm/°C, -55°C to 155°C). The primary difference is RoHS compliance status. CRCW08052K49FKEA is ROHS3 compliant, while CRCW08052K49FKTC is non-compliant. Mechanical dimensions are equivalent (0.50mm height).

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

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape in reel format, suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel packaging provides smaller quantities on cut tape segments. Both formats contain identical components; selection depends on production volume and assembly equipment compatibility.

Q: Are substitute parts with different heights (0.60mm, 0.65mm, 0.70mm) compatible?

A: Height variations within the 0805 package specification remain mechanically compatible for standard PCB assembly. However, designs with tight vertical clearances, stacked components, or specific height constraints must account for these differences. CRCW08052K49FKEA and CRCW08052K49FKTC both specify 0.50mm maximum height and are most compatible for space-constrained applications.

Q: Why is TRR10EZPF2491 listed if it is obsolete?

A: TRR10EZPF2491 is included for reference in legacy system documentation and reverse engineering applications. For new designs and production, active alternatives such as CRCW08052K49FKEA, ERJ-6ENF2491V, or RMCF0805FT2K49 are recommended.

Q: Do all substitute parts meet AEC-Q200 automotive qualification?

A: CRCW08052K49FKTC, CRCW08052K49FKEA, CRCW08052K49FKEB, ERJ-6ENF2491V, RMCF0805FT2K49, and KTR10EZPF2491 are explicitly rated AEC-Q200. CR0805-FX-2491ELF and TRR10EZPF2491 do not specify AEC-Q200 rating in provided data. For automotive applications requiring AEC-Q200 certification, select from the explicitly rated parts.

Q: What is the significance of the temperature coefficient ±100ppm/°C?

A: Temperature coefficient defines resistance change per degree Celsius across the operating range. All listed parts maintain ±100ppm/°C, ensuring consistent performance across the -55°C to 155°C operating window. This parameter is critical for precision analog circuits and must not be compromised during substitution.

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