LVC25JR390EV Equivalent & Substitute Parts

Part Overview

The LVC25JR390EV is a 390 mOhms ±5% 1W chip resistor in 2512 (6432 Metric) package manufactured by Ohmite. This thick film current sense resistor is designed for precision current measurement applications with moisture-resistant construction. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance requirements. Substitute parts must maintain the 390 mOhms resistance value, 2512 package form factor, and current sense functionality while meeting or exceeding the original specifications.

Substiute Parts

LVC25JR390EV

OhmiteIn Stock: 875LVC25JR390EV Datasheet

Current PartRFQ

CRM2512-FX-R390ELF

Bourns Inc.In Stock: 740CRM2512-FX-R390ELF Datasheet

MFR RecommendedRFQ

RL73H3AR39FTDF

TE Connectivity Passive ProductIn Stock: 3102RL73H3AR39FTDF Datasheet

MFR RecommendedRFQ

RL73H3AR39FTE

TE Connectivity Passive ProductIn Stock: 6480RL73H3AR39FTE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

• Resistance Value: Must be 390 mOhms
• Package / Case: Must be 2512 (6432 Metric)
• Composition: Must be Thick Film
• Features: Must include Current Sense functionality
• Temperature Coefficient: Must be ±100ppm/°C
• RoHS Compliance: Must be ROHS3 Compliant
• Moisture Sensitivity Level: Must be 1 (Unlimited)

The following parameters may vary within acceptable ranges for substitution:

• Tolerance: May be tighter (±1% acceptable for ±5% requirement)
• Power Rating: May be equal or higher (2W acceptable for 1W requirement)
• Operating Temperature Range: May be wider (extended range acceptable)
• Product Status: Active status preferred over obsolete

All three substitute parts meet these criteria and are qualified equivalents for the LVC25JR390EV.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are qualified equivalents for the LVC25JR390EV based on compliance and certification criteria:

CRM2512-FX-R390ELF (Bourns Inc.) offers increased power dissipation capability at 2W, providing design margin for applications requiring higher current handling. This part is actively manufactured and ROHS3 compliant with extended operating temperature range (-55°C ~ 155°C). The tighter ±1% tolerance improves measurement accuracy in current sensing circuits.

RL73H3AR39FTDF (TE Connectivity Passive Product) maintains the original 1W power rating while providing ±1% tolerance and extended operating temperature range. This part is actively manufactured with ROHS3 compliance and REACH unaffected status. High inventory availability (3059 pcs) supports production continuity.

RL73H3AR39FTE (TE Connectivity Passive Product) is functionally identical to RL73H3AR39FTDF with the same electrical and mechanical specifications. This part is actively manufactured with ROHS3 compliance and REACH unaffected status. Highest inventory availability (6458 pcs) ensures supply chain reliability.

Selection between TE Connectivity options should be based on packaging requirements (Tape & Reel format specified for both). The Bourns option is preferred when additional power dissipation margin is required in the circuit design.

Frequently Asked Questions (FAQ)

Q: Can CRM2512-FX-R390ELF replace LVC25JR390EV in all applications?

A: Yes. The CRM2512-FX-R390ELF meets all mandatory substitution parameters: 390 mOhms resistance, 2512 package, thick film composition, current sense functionality, ±100ppm/°C temperature coefficient, ROHS3 compliance, and MSL 1 rating. The 2W power rating exceeds the 1W requirement, and ±1% tolerance is tighter than the original ±5%.

Q: What is the difference between RL73H3AR39FTDF and RL73H3AR39FTE?

A: Both parts are electrically and mechanically identical with 390 mOhms ±1% 1W ratings in 2512 package. Both are TE Connectivity products with identical specifications, compliance certifications, and current sense functionality. Selection may be based on packaging lot or supplier availability.

Q: Are the substitute parts compatible with the original PCB footprint?

A: Yes. All substitute parts use the 2512 (6432 Metric) package with identical footprint dimensions. Physical dimensions are within acceptable tolerance: length 0.248" to 0.250" (6.30mm to 6.35mm), width 0.122" to 0.130" (3.10mm to 3.30mm), and height 0.026" to 0.031" (0.65mm to 0.80mm).

Q: Do all substitute parts meet RoHS and environmental compliance?

A: Yes. All three substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The Bourns and TE Connectivity parts also carry REACH unaffected status, confirming compliance with EU environmental regulations.

Q: What is the impact of tolerance differences on circuit performance?

A: The original LVC25JR390EV specifies ±5% tolerance, while all substitutes offer ±1% tolerance. Tighter tolerance improves current measurement accuracy in sensing applications. At 390 mOhms, the ±5% tolerance band is ±19.5 mOhms, while ±1% tolerance is ±3.9 mOhms. This represents improved precision with no negative impact on circuit compatibility.

Q: Can the 2W rated CRM2512-FX-R390ELF be used in place of the 1W rated original?

A: Yes. Higher power rating provides additional thermal margin and is a direct upgrade. The 2W rating allows the resistor to dissipate more heat without exceeding maximum junction temperature, improving reliability in high-current applications.