CRCW080591R0FKTA Equivalent & Substitute Parts

Part Overview

The CRCW080591R0FKTA is a 91 Ohm ±1% 0.125W (1/8W) chip resistor in 0805 (2012 Metric) package manufactured by Vishay Dale. This thick film resistor 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 identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when design requirements necessitate alternative specifications such as increased power rating or enhanced environmental protection.

Substiute Parts

CRCW080591R0FKTA

Vishay DaleIn Stock: 1187CRCW080591R0FKTA Datasheet

Current PartRFQ

CRCW080591R0FKEA

Vishay DaleIn Stock: 23867CRCW080591R0FKEA Datasheet

DirectRFQ

CRCW080591R0FKEAHP

Vishay DaleIn Stock: 20568CRCW080591R0FKEAHP Datasheet

UpgradeRFQ

ERJ-6ENF91R0V

Panasonic Electronic ComponentsIn Stock: 285470ERJ-6ENF91R0V Datasheet

DirectRFQ

RMCF0805FT91R0

Stackpole Electronics IncIn Stock: 5316RMCF0805FT91R0 Datasheet

DirectRFQ

AC0805FR-0791RL

YAGEOIn Stock: 15738AC0805FR-0791RL Datasheet

UpgradeRFQ

ERJ-UP6F91R0V

Panasonic Electronic ComponentsIn Stock: 5902ERJ-UP6F91R0V Datasheet

UpgradeRFQ

RC0805FR-0791RL

YAGEOIn Stock: 141821RC0805FR-0791RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CRCW080591R0FKTA are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalents maintain identical electrical specifications: 91 Ohms resistance, ±1% tolerance, 0.125W power rating, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, 0805 package, and AEC-Q200 automotive rating. These parts are pin-compatible and functionally interchangeable in all applications where the original part is specified.

Upgraded Alternatives increase the power rating to 0.5W (1/2W) while maintaining all other electrical parameters and the 0805 package footprint. These parts provide enhanced thermal performance and pulse withstanding capability for applications requiring higher power dissipation margins.

The following parameters determine substitution eligibility:

• Resistance value: 91 Ohms (fixed)
• Tolerance: ±1% (fixed)
• Package: 0805 (2012 Metric) (fixed)
• Temperature coefficient: ±100ppm/°C (fixed)
• Operating temperature: -55°C to 155°C (fixed)
• Automotive rating: AEC-Q200 (fixed)
• Power rating: 0.125W minimum (0.5W acceptable for upgrades)

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection (Same Power Rating)

CRCW080591R0FKEA is the primary direct equivalent from Vishay Dale, offering identical electrical and mechanical specifications with ROHS3 compliance. This part is recommended for designs requiring regulatory compliance upgrades from the original RoHS non-compliant CRCW080591R0FKTA.

ERJ-6ENF91R0V (Panasonic), RMCF0805FT91R0 (Stackpole), AC0805FR-0791RL (YAGEO), and RC0805FR-0791RL (YAGEO) are functionally equivalent alternatives from different manufacturers. All maintain 0.125W power rating, ±1% tolerance, AEC-Q200 automotive qualification, and identical electrical performance. These parts are suitable for cross-manufacturer substitution when supply constraints or procurement requirements necessitate alternative sources.

Upgraded Alternative Selection (Higher Power Rating)

CRCW080591R0FKEAHP (Vishay Dale) and ERJ-UP6F91R0V (Panasonic) provide 0.5W power rating in the same 0805 package footprint. These upgrades are applicable in designs where increased thermal margin or pulse withstanding capability is required while maintaining the same PCB footprint and electrical resistance value.

All substitute parts listed carry active product status and ROHS3 compliance, supporting modern procurement and environmental regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can CRCW080591R0FKEA be used as a direct replacement for CRCW080591R0FKTA?

A: Yes. CRCW080591R0FKEA is a direct equivalent with identical electrical specifications (91 Ohms, ±1%, 0.125W, ±100ppm/°C, -55°C to 155°C) and 0805 package. The primary difference is ROHS3 compliance versus RoHS non-compliant status of the original part.

Q: What is the difference between 0.125W and 0.5W power-rated parts?

A: Power rating indicates maximum continuous power dissipation capability. A 0.5W part can dissipate four times more power than a 0.125W part in the same package. Upgraded parts (CRCW080591R0FKEAHP, ERJ-UP6F91R0V) are suitable for applications requiring higher thermal performance or pulse withstanding capability. Both ratings maintain identical resistance value and tolerance.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. All parts listed in this reference maintain AEC-Q200 automotive qualification, ensuring compliance with automotive reliability and qualification standards.

Q: Does package height variation affect PCB assembly?

A: Package height differences (ranging from 0.020" to 0.028" maximum seated height) are within standard 0805 component tolerances and do not affect PCB assembly compatibility. All parts are mechanically compatible with standard 0805 footprints.

Q: Can I substitute a 0.5W part for a 0.125W part in my design?

A: Yes. A higher power-rated part is functionally compatible in applications designed for lower power ratings. The 0.5W part provides additional thermal margin and is suitable for designs where increased reliability or pulse withstanding is beneficial.

Q: Which substitute offers the best inventory availability?

A: RC0805FR-0791RL (YAGEO) and ERJ-6ENF91R0V (Panasonic) offer the highest inventory levels at 141,725 and 285,455 pieces respectively, supporting high-volume procurement requirements.