ERJ-S1DF6490U Equivalent & Substitute Parts

Part Overview

The ERJ-S1DF6490U is a 649 Ohm ±1% thick film chip resistor rated at 0.75W in a 2010 (5025 Metric) surface mount package. Manufactured by Panasonic Electronic Components, this component features anti-sulfur coating and AEC-Q200 automotive qualification. The part is currently in active production status with 730 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design flexibility is required across multiple qualified suppliers. The ERJ-S1DF6490U maintains full electrical and mechanical compatibility with identified substitute components that share identical resistance, tolerance, power rating, package dimensions, and automotive qualification standards.

Key Parameters

Parameter	Value
Resistance	649 Ohms
Tolerance	±1%
Power Rating	0.75W (3/4W)
Package / Case	2010 (5025 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1DF6490U is determined by strict equivalence across the following parameters:

Resistance value: 649 Ohms
Tolerance: ±1%
Power rating: 0.75W
Package: 2010 (5025 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
Automotive qualification: AEC-Q200
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1

All identified substitute parts meet these criteria without exception. Substitution does not require design modification, PCB layout changes, or requalification of thermal or electrical performance characteristics.

Parameter Comparison

Parameter	ERJ-S1DF6490U	ERJ-12SF6490U	CRCW2010649RFKEF
Manufacturer	Panasonic Electronic Components	Panasonic Electronic Components	Vishay Dale
Resistance	649 Ohms	649 Ohms	649 Ohms
Tolerance	±1%	±1%	±1%
Power Rating	0.75W	0.75W	0.75W
Package / Case	2010 (5025 Metric)	2010 (5025 Metric)	2010 (5025 Metric)
Composition	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
AEC-Q200 Rating	Yes	Yes	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Not For New Designs	Active
Size / Dimension	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)	0.197" L x 0.098" W (5.00mm x 2.50mm)
Height - Seated (Max)	0.028" (0.70mm)	0.028" (0.70mm)	0.028" (0.70mm)

Engineering Selection Recommendations

ERJ-S1DF6490U (Primary Selection)

This part is the recommended choice for new designs and ongoing production. It maintains active product status with anti-sulfur coating and full AEC-Q200 automotive qualification. Current inventory of 730 units supports immediate procurement requirements.

CRCW2010649RFKEF (Preferred Substitute)

This Vishay Dale component is the optimal substitute option. It carries active product status and maintains identical electrical and mechanical specifications. Inventory availability of 12,646 units provides supply chain flexibility. Selection of this part does not require design changes or performance requalification.

ERJ-12SF6490U (Legacy Substitute)

This Panasonic component is electrically and mechanically equivalent but carries "Not For New Designs" status. It remains suitable for legacy system maintenance and repair applications where the original part specification must be maintained. Inventory of 5,026 units is available. This part should not be selected for new design implementations.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF6490U be used in new designs?

A: No. ERJ-12SF6490U carries "Not For New Designs" product status. For new designs, select either ERJ-S1DF6490U or CRCW2010649RFKEF.

Q: Are all substitute parts pin-compatible with the ERJ-S1DF6490U?

A: Yes. All substitute parts use identical 2010 (5025 Metric) package dimensions with two terminations. No PCB layout modifications are required.

Q: Do substitute parts require thermal or electrical requalification?

A: No. All substitute parts share identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range. Electrical and thermal performance characteristics remain unchanged.

Q: What is the difference between ERJ-S1DF6490U and ERJ-12SF6490U?

A: Both parts are manufactured by Panasonic and share identical electrical and mechanical specifications. The primary difference is product status: ERJ-S1DF6490U is active, while ERJ-12SF6490U is not recommended for new designs.

Q: Can CRCW2010649RFKEF be used as a direct replacement?

A: Yes. CRCW2010649RFKEF is manufactured by Vishay Dale and meets all electrical, mechanical, and automotive qualification requirements. It is suitable for both new designs and replacement applications.

Q: Are all parts AEC-Q200 qualified?

A: Yes. All listed parts carry AEC-Q200 automotive qualification and are suitable for automotive applications requiring this certification.

Q: What is the moisture sensitivity level for these parts?

A: All parts have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

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