ERJ-S03F44R2V Equivalent & Substitute Parts

Part Overview

The ERJ-S03F44R2V is a 44.2 Ohm ±1% thick film chip resistor manufactured by Panasonic Electronic Components in 0603 (1608 Metric) package format. Rated for 0.1W (1/10W) power dissipation with anti-sulfur coating and AEC-Q200 automotive qualification, this component operates across -55°C to 155°C. The part is active in production with 1039 units currently in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and component sourcing alternatives while maintaining electrical and mechanical compatibility.

Substiute Parts

ERJ-S03F44R2V

Panasonic Electronic ComponentsIn Stock: 1078ERJ-S03F44R2V Datasheet

Current PartRFQ

ERJ-3EKF44R2V

Panasonic Electronic ComponentsIn Stock: 61630ERJ-3EKF44R2V Datasheet

SimilarRFQ

CRCW060344R2FKEA

Vishay DaleIn Stock: 10356CRCW060344R2FKEA Datasheet

SimilarRFQ

RC0603FR-0744R2L

YAGEOIn Stock: 96399RC0603FR-0744R2L Datasheet

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RMCF0603FT44R2

Stackpole Electronics IncIn Stock: 21039RMCF0603FT44R2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (44.2 Ohms), tolerance (±1%), power rating (0.1W), package format (0603), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), RoHS3 compliance, and MSL rating (1). All identified substitute parts meet these core electrical and mechanical requirements. Dimensional variations within supplier tolerances (length 1.55–1.60mm, width 0.80–0.85mm, height 0.50–0.55mm) do not affect PCB layout compatibility for standard 0603 footprints. Automotive AEC-Q200 qualification is present on the main part and three of four substitutes; one substitute (RC0603FR-0744R2L) carries moisture-resistant designation instead but maintains equivalent electrical performance and temperature stability.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active production status and ROHS3 compliance. ERJ-3EKF44R2V (Panasonic) and RMCF0603FT44R2 (Stackpole Electronics Inc) are direct functional equivalents with AEC-Q200 automotive qualification matching the primary part. CRCW060344R2FKEA (Vishay Dale) provides AEC-Q200 rated substitution with established supply availability. RC0603FR-0744R2L (YAGEO) qualifies as an electrical and thermal equivalent with moisture-resistant construction; this part lacks explicit AEC-Q200 designation but meets all core electrical parameters and temperature stability requirements. Selection among these parts should be based on supply chain availability, lead time requirements, and specific application certifications (automotive AEC-Q200 if mandated by design specification).

Frequently Asked Questions (FAQ)

Q: Can ERJ-3EKF44R2V replace ERJ-S03F44R2V directly? A: Yes. Both parts are manufactured by Panasonic, share identical electrical specifications (44.2 Ω ±1%, 0.1W), operate across -55°C to 155°C, carry AEC-Q200 qualification, and use 0603 packaging. The primary difference is series designation (ERJ-3EK vs. ERJ-S03); both are thick film compositions with ±100ppm/°C temperature coefficient.

Q: What is the difference between anti-sulfur and moisture-resistant features? A: Anti-sulfur coating protects against sulfur-containing environmental contaminants common in industrial and automotive settings. Moisture-resistant construction addresses humidity exposure. Both features support reliability in harsh environments but address different degradation mechanisms. RC0603FR-0744R2L employs moisture-resistant design; ERJ-S03F44R2V uses anti-sulfur coating. Both maintain equivalent electrical performance and temperature stability.

Q: Are dimensional variations between substitutes significant? A: Dimensional tolerances across all parts (length 1.55–1.60mm, width 0.80–0.85mm, height 0.50–0.55mm) fall within standard 0603 footprint specifications. PCB layout compatibility is maintained across all substitutes without redesign.

Q: Which substitute offers the best supply availability? A: RC0603FR-0744R2L (YAGEO) shows highest inventory at 96,297 units. ERJ-3EKF44R2V (Panasonic) provides 61,522 units. CRCW060344R2FKEA (Vishay Dale) maintains 10,300 units. RMCF0603FT44R2 (Stackpole) stocks 20,939 units. Availability should be verified with current supplier data at time of procurement.

Q: Is AEC-Q200 qualification required for my application? A: AEC-Q200 is mandatory for automotive-grade applications. ERJ-S03F44R2V, ERJ-3EKF44R2V, CRCW060344R2FKEA, and RMCF0603FT44R2 carry this certification. RC0603FR-0744R2L does not list AEC-Q200 but meets equivalent electrical and thermal specifications. Confirm application requirements before substitution.

Q: Can these parts be used interchangeably in high-temperature circuits? A: All parts operate to 155°C maximum and maintain ±100ppm/°C temperature coefficient across the full -55°C to 155°C range. Electrical performance remains stable within specified tolerance across this temperature band. Interchangeability is supported for thermal performance.