RCS080591R0FKEA Equivalent & Substitute Parts

Part Overview

The RCS080591R0FKEA is a 91 Ohm ±1% 0.5W 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 pulse withstanding capability. The part is currently active in production with 1055 units in stock. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and automotive qualification requirements.

Substiute Parts

RCS080591R0FKEA

Vishay DaleIn Stock: 1119RCS080591R0FKEA Datasheet

Current PartRFQ

CRCW080591R0FKEAHP

Vishay DaleIn Stock: 20568CRCW080591R0FKEAHP Datasheet

UpgradeRFQ

ERJ-UP6F91R0V

Panasonic Electronic ComponentsIn Stock: 5902ERJ-UP6F91R0V Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RCS080591R0FKEA are qualified based on the following criteria:

• Identical resistance value: 91 Ohms
• Matching tolerance: ±1%
• Equivalent power rating: 0.5W (1/2W)
• Same package: 0805 (2012 Metric)
• Identical composition: Thick Film
• Matching temperature coefficient: ±100ppm/°C
• Same operating temperature range: -55°C ~ 155°C
• Automotive AEC-Q200 qualification
• ROHS3 compliance
• MSL rating of 1 or equivalent

Two substitute parts meet these criteria and are listed as direct equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are qualified equivalents for the RCS080591R0FKEA in automotive applications.

CRCW080591R0FKEAHP is an upgrade variant from Vishay Dale within the CRCW-HP series. It maintains identical electrical and mechanical specifications with the main part and offers higher inventory availability (20469 units in stock).

ERJ-UP6F91R0V is the manufacturer-recommended alternative from Panasonic Electronic Components. This part includes anti-sulfur protection in addition to standard automotive AEC-Q200 qualification. The seated height is 0.028" (0.70mm) compared to 0.020" (0.50mm) for the main part and upgrade variant. This height difference must be evaluated for PCB layout and assembly clearance requirements.

All three parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can CRCW080591R0FKEAHP be used as a direct replacement for RCS080591R0FKEA?

A: Yes. Both parts are manufactured by Vishay Dale with identical electrical specifications (91 Ohms ±1%, 0.5W), identical package dimensions (0805), identical temperature coefficient (±100ppm/°C), identical operating range (-55°C ~ 155°C), and identical AEC-Q200 automotive qualification. The CRCW-HP variant is an upgrade series with higher stock availability.

Q: What is the difference between ERJ-UP6F91R0V and the main part?

A: The ERJ-UP6F91R0V is manufactured by Panasonic and includes anti-sulfur protection. Electrical specifications are identical. The primary difference is the seated height: ERJ-UP6F91R0V measures 0.028" (0.70mm) maximum versus 0.020" (0.50mm) for RCS080591R0FKEA. This height difference must be considered for PCB assembly and clearance constraints.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q200 automotive qualification and operate across the same temperature range (-55°C ~ 155°C). All are ROHS3 compliant with MSL rating of 1.

Q: What determines substitutability for this resistor?

A: Substitutability is determined by matching resistance value (91 Ohms), tolerance (±1%), power rating (0.5W), package type (0805), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and automotive qualification (AEC-Q200). Physical dimensions and height must also be compatible with PCB layout.

Q: Can I use these parts interchangeably in production?

A: CRCW080591R0FKEAHP and RCS080591R0FKEA are fully interchangeable. ERJ-UP6F91R0V is interchangeable with the exception that its maximum seated height of 0.028" (0.70mm) must be verified against PCB assembly specifications and clearance requirements.