CRCW08051K27FKEB Equivalent & Substitute Parts

Part Overview

The CRCW08051K27FKEB is a 1.27 kOhms ±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 with 914 units in stock. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific feature requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	1.27 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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CRCW08051K27FKEB is determined by strict equivalence across the following critical parameters:

Resistance value: 1.27 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 to 155°C
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical specifications. Variations in seated height and manufacturer-specific features do not affect functional interchangeability in standard PCB assembly processes. The substitute parts are categorized as direct equivalents, with one part identified as an upgrade option due to enhanced high-voltage capability, and one as manufacturer-recommended based on moisture-resistant construction.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Height Max (mm)	RoHS	MSL	Inventory
CRCW08051K27FKEB	Vishay Dale	1.27 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.50	ROHS3	1	914
CRCW08051K27FKEA	Vishay Dale	1.27 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.50	ROHS3	1	27118
ERJ-6ENF1271V	Panasonic Electronic Components	1.27 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.70	ROHS3	1	36530
RMCF0805FT1K27	Stackpole Electronics Inc	1.27 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65	ROHS3	1	18168
KTR10EZPF1271	Rohm Semiconductor	1.27 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.65	ROHS3	1	10451
CR0805-FX-1271ELF	Bourns Inc.	1.27 kΩ	±1%	0.125	0805	±100ppm/°C	-55 to 155°C	0.60	ROHS3	1	25712

Engineering Selection Recommendations

All substitute parts listed maintain full electrical and mechanical compatibility with the CRCW08051K27FKEB. Selection among equivalent options should be based on:

Direct Equivalents (CRCW08051K27FKEA, ERJ-6ENF1271V, RMCF0805FT1K27): These parts are functionally identical to the primary part number and suitable for direct substitution in all applications. CRCW08051K27FKEA offers the highest inventory availability at 27,118 units. ERJ-6ENF1271V provides the largest inventory pool at 36,530 units from Panasonic. RMCF0805FT1K27 from Stackpole Electronics maintains 18,168 units in stock.

Upgrade Option (KTR10EZPF1271): This Rohm Semiconductor part includes high-voltage capability in addition to standard AEC-Q200 automotive rating. It is suitable for applications requiring enhanced voltage performance while maintaining all other electrical specifications.

Manufacturer-Recommended (CR0805-FX-1271ELF): The Bourns Inc. CR0805-FX-1271ELF incorporates moisture-resistant construction and is recommended where enhanced environmental protection is beneficial. This part maintains 25,712 units in inventory.

All parts are ROHS3 compliant, carry MSL 1 rating, and operate across the full -55°C to 155°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can CRCW08051K27FKEA be used as a direct replacement for CRCW08051K27FKEB?

A: Yes. Both parts are manufactured by Vishay Dale with identical electrical specifications (1.27 kΩ, ±1%, 0.125W, 0805 package) and identical seated height (0.50mm). The parts differ only in packaging designation and are fully interchangeable.

Q: What is the difference between the Panasonic ERJ-6ENF1271V and the Vishay CRCW08051K27FKEB?

A: The parts are electrically equivalent across all critical parameters. The primary difference is seated height: ERJ-6ENF1271V has a maximum seated height of 0.70mm compared to 0.50mm for the Vishay part. This difference is within standard PCB assembly tolerances and does not affect functionality in typical applications.

Q: Why is KTR10EZPF1271 listed as an upgrade option?

A: The KTR10EZPF1271 from Rohm Semiconductor includes high-voltage capability in addition to the standard AEC-Q200 automotive rating. All other electrical and mechanical specifications remain identical. This part is suitable for applications requiring enhanced voltage performance.

Q: Are all substitute parts suitable for automotive applications?

A: All listed substitute parts carry AEC-Q200 automotive rating except CR0805-FX-1271ELF, which is rated for moisture-resistant applications. For strict automotive compliance requirements, select from parts explicitly marked with AEC-Q200 designation.

Q: What is the significance of MSL 1 rating on these parts?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life with no special moisture control requirements during storage or handling. All listed parts carry this rating, eliminating moisture-related storage constraints.

Q: Can height differences between substitute parts affect PCB assembly?

A: Height variations (0.50mm to 0.70mm maximum seated height) are within standard PCB assembly process windows and do not require design modifications. Standard reflow soldering processes accommodate these tolerances without adjustment.

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