ERJ-B2CJR02V Equivalent & Substitute Parts

Part Overview

The ERJ-B2CJR02V is a 20 mOhms ±5% 1W thick film chip resistor manufactured by Panasonic Electronic Components in the Wide 1206 (3216 Metric) package. This current sense resistor is designed for automotive applications and carries AEC-Q200 qualification. The part is active in production with 1,079 units currently in stock. Finding equivalent or substitute parts may be necessary due to supply constraints, design optimization requirements, or tolerance specifications for specific circuit applications.

Substiute Parts

ERJ-B2CJR02V

Panasonic Electronic ComponentsIn Stock: 1179ERJ-B2CJR02V Datasheet

Current PartRFQ

ERJ-B2CFR02V

Panasonic Electronic ComponentsIn Stock: 5809ERJ-B2CFR02V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the ERJ-B2CJR02V is determined by strict equivalence in the following parameters:

• Resistance value: 20 mOhms (exact match required)
• Power rating: 1W (exact match required)
• Package: Wide 1206 (3216 Metric), 0612 (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: 0/+300 ppm/°C (exact match required)
• Operating temperature range: -55°C to +155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)

The ERJ-B2CFR02V qualifies as a direct substitute based on these parameters. The primary difference is tolerance specification: the substitute part offers ±1% tolerance compared to the main part's ±5% tolerance. This represents an upgrade in tolerance performance while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the ERJ-B2CJR02V and ERJ-B2CFR02V are active production parts with ROHS3 compliance and AEC-Q200 automotive qualification. The ERJ-B2CFR02V provides improved tolerance performance at ±1% versus ±5%, making it suitable for applications requiring tighter resistance specifications. Both parts maintain identical electrical performance across the full operating temperature range and are packaged identically. Selection between these parts should be based on circuit tolerance requirements and application-specific accuracy needs.

Frequently Asked Questions (FAQ)

Q: Can ERJ-B2CFR02V replace ERJ-B2CJR02V in existing designs?

A: Yes. Both parts share identical resistance value, power rating, package dimensions, and thermal characteristics. The substitute part offers superior tolerance performance. No PCB layout or thermal management modifications are required.

Q: What is the significance of the tolerance difference between ±5% and ±1%?

A: Tolerance specifies the maximum deviation from the nominal 20 mOhms resistance value. The ±1% tolerance part (ERJ-B2CFR02V) ensures resistance remains between 19.8 and 20.2 mOhms, while the ±5% part (ERJ-B2CJR02V) allows variation between 19 and 21 mOhms. Applications requiring precise current sensing or measurement benefit from tighter tolerance specifications.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the ERJ-B2CJR02V and ERJ-B2CFR02V carry AEC-Q200 qualification, confirming suitability for automotive environments including temperature cycling and reliability requirements.

Q: Do package dimensions differ between these parts?

A: No. Both parts use the Wide 1206 (3216 Metric) package with identical footprint dimensions of 0.063" L × 0.126" W (1.60mm × 3.20mm) and maximum seated height of 0.031" (0.80mm).

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

A: Both parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.