ERJ-S03F21R0V Equivalent & Substitute Parts

Part Overview

The ERJ-S03F21R0V is a 21 Ohm ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Panasonic Electronic Components. This component is rated for automotive applications under AEC-Q200 standard with anti-sulfur properties and operates across -55°C to 155°C. The part is active in production status. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance ratings are matched across alternative manufacturers.

Substiute Parts

ERJ-S03F21R0V

Panasonic Electronic ComponentsIn Stock: 1098ERJ-S03F21R0V Datasheet

Current PartRFQ

ERJ-3EKF21R0V

Panasonic Electronic ComponentsIn Stock: 78240ERJ-3EKF21R0V Datasheet

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CRCW060321R0FKEA

Vishay DaleIn Stock: 3905CRCW060321R0FKEA Datasheet

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RC0603FR-0721RL

YAGEOIn Stock: 18782RC0603FR-0721RL Datasheet

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RMCF0603FT21R0

Stackpole Electronics IncIn Stock: 5033RMCF0603FT21R0 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERJ-S03F21R0V are qualified based on the following criteria:

• Identical resistance value: 21 Ohms
• Identical tolerance: ±1%
• Identical power rating: 0.1W (1/10W)
• Identical package: 0603 (1608 Metric)
• Identical composition: Thick Film
• Identical temperature coefficient: ±100ppm/°C
• Identical operating temperature range: -55°C ~ 155°C
• Identical RoHS compliance: ROHS3 Compliant
• Identical MSL rating: 1 (Unlimited)

All substitute parts meet these core electrical and mechanical parameters. Variations in physical dimensions (length and height) within acceptable tolerances do not affect functional equivalence in standard PCB assembly processes.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are functionally equivalent to the ERJ-S03F21R0V and maintain active production status. Selection among these alternatives is based on:

• Availability: ERJ-3EKF21R0V (78,169 pcs), RC0603FR-0721RL (18,708 pcs), RMCF0603FT21R0 (4,988 pcs), and CRCW060321R0FKEA (3,825 pcs) are in stock.
• Automotive compliance: ERJ-S03F21R0V, ERJ-3EKF21R0V, CRCW060321R0FKEA, and RMCF0603FT21R0 carry AEC-Q200 ratings. RC0603FR-0721RL does not specify AEC-Q200 but meets all electrical and environmental parameters.
• Regulatory compliance: All parts are ROHS3 compliant, REACH unaffected, and classified as EAR99.

Frequently Asked Questions (FAQ)

Q: Can ERJ-3EKF21R0V replace ERJ-S03F21R0V directly?

A: Yes. Both parts share identical electrical specifications (21 Ohms ±1%, 0.1W), package (0603), temperature range (-55°C to 155°C), and AEC-Q200 automotive rating. The primary difference is the series designation (ERJ-3EK vs. ERJ-S03) and anti-sulfur feature on the ERJ-S03F21R0V. For applications not requiring anti-sulfur protection, ERJ-3EKF21R0V is a direct substitute.

Q: What is the difference between AEC-Q200 rated and non-AEC-Q200 parts?

A: AEC-Q200 is an automotive qualification standard. ERJ-S03F21R0V, ERJ-3EKF21R0V, CRCW060321R0FKEA, and RMCF0603FT21R0 carry this rating. RC0603FR-0721RL does not specify AEC-Q200 certification. For automotive applications requiring this qualification, use only AEC-Q200 rated alternatives.

Q: Are physical dimension variations significant?

A: Minor variations exist within tolerance. CRCW060321R0FKEA measures 0.061" L x 0.033" W (1.55mm x 0.85mm) with 0.020" height, while others measure 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" height. These differences are within standard PCB assembly tolerances and do not affect functionality or footprint compatibility in 0603 designs.

Q: What does MSL 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life without special moisture control measures. All listed parts carry this rating, allowing standard storage and handling without desiccant requirements.

Q: Can I use RC0603FR-0721RL in automotive applications?

A: RC0603FR-0721RL meets all electrical and environmental specifications but does not carry AEC-Q200 certification. Use this part only in non-automotive applications or where AEC-Q200 is not a design requirement.