ERJ-S03J185V Equivalent & Substitute Parts

Part Overview

The ERJ-S03J185V is a 1.8 MOhms ±5% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Panasonic Electronic Components. This thick film resistor features anti-sulfur coating and automotive AEC-Q200 qualification, making it suitable for automotive and high-reliability applications. The part is currently in active production status with 1029 pieces available in stock. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative manufacturer series.

Substiute Parts

ERJ-S03J185V

Panasonic Electronic ComponentsIn Stock: 1131ERJ-S03J185V Datasheet

Current PartRFQ

ERJ-U03J185V

Panasonic Electronic ComponentsIn Stock: 5862ERJ-U03J185V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERJ-S03J185V is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part ERJ-U03J185V is qualified as a direct equivalent based on the following criteria:

Electrical Parameters (Must Match Exactly):

• Resistance value: 1.8 MOhms
• Tolerance: ±5%
• Power rating: 0.1W (1/10W)
• Temperature coefficient: -400 / +150 ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

• Package type: 0603 (1608 Metric)
• Physical dimensions: 0.063" L x 0.031" W (1.60mm x 0.80mm)
• Height - Seated (Max): 0.022" (0.55mm)
• Number of terminations: 2

Compliance & Certification (Must Match Exactly):

• Composition: Thick Film
• Features: Anti-Sulfur, Automotive AEC-Q200
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part differs only in the manufacturer series designation (ERJ-U03 versus ERJ-S03), with all functional and physical characteristics remaining identical.

Parameter Comparison

Engineering Selection Recommendations

Both the ERJ-S03J185V and ERJ-U03J185V are active production parts manufactured by Panasonic Electronic Components with identical electrical, mechanical, and compliance specifications. Selection between these parts is based on inventory availability and supply chain requirements rather than technical differentiation.

The ERJ-S03J185V (ERJ-S03 series) currently has 1029 pieces in stock. The ERJ-U03J185V (ERJ-U03 series) has higher inventory availability at 5840 pieces in stock, making it suitable for applications requiring larger quantities or extended supply assurance.

Both parts meet automotive AEC-Q200 qualification and ROHS3 compliance requirements. Both are rated for operating temperatures from -55°C to 155°C with identical temperature coefficient specifications. The anti-sulfur thick film construction is present in both variants, ensuring equivalent performance in corrosive environments.

For applications where either part number is acceptable, the ERJ-U03J185V provides superior inventory availability. For applications with specific design documentation referencing the ERJ-S03J185V, direct substitution with ERJ-U03J185V is electrically and mechanically valid.

Frequently Asked Questions (FAQ)

Q: Can ERJ-U03J185V be used as a direct replacement for ERJ-S03J185V?

A: Yes. The ERJ-U03J185V is a direct equivalent substitute. All electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating temperature range), mechanical parameters (package type, dimensions, height), and compliance certifications (AEC-Q200, ROHS3, anti-sulfur coating) are identical between the two part numbers.

Q: What is the difference between ERJ-S03 and ERJ-U03 series?

A: The ERJ-S03 and ERJ-U03 are different manufacturer series designations from Panasonic Electronic Components. For the 1.8 MOhms ±5% 0.1W 0603 package specification, both series provide identical electrical and mechanical characteristics. The series designation difference does not affect functional performance or compatibility.

Q: Are both parts suitable for automotive applications?

A: Yes. Both ERJ-S03J185V and ERJ-U03J185V carry AEC-Q200 automotive qualification and are rated for the automotive temperature range of -55°C to 155°C. Both feature anti-sulfur thick film construction for enhanced reliability in automotive environments.

Q: What is the package type for these resistors?

A: Both parts use the 0603 (1608 Metric) surface mount package. Physical dimensions are 0.063" L x 0.031" W (1.60mm x 0.80mm) with a maximum seated height of 0.022" (0.55mm). Both are supplied in Tape & Reel (TR) packaging format.

Q: Are these parts RoHS compliant?

A: Yes. Both ERJ-S03J185V and ERJ-U03J185V are ROHS3 compliant. Both have Moisture Sensitivity Level (MSL) rating of 1, indicating unlimited shelf life under normal storage conditions.

Q: What is the tolerance specification for these resistors?

A: Both parts have a tolerance of ±5% on the 1.8 MOhms resistance value. The temperature coefficient is -400 / +150 ppm/°C for both variants.

Q: Which part should be selected for new designs?

A: Both parts are in active production status and suitable for new designs. Selection can be based on inventory availability and supply chain preferences. The ERJ-U03J185V currently has higher stock levels (5840 pieces) compared to ERJ-S03J185V (1029 pieces).