LVC25FR270EV Equivalent & Substitute Parts

Part Overview

The LVC25FR270EV is a 270 mOhms ±1% 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 classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance requirements. Substitute parts must maintain identical electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination type) to ensure direct replacement capability.

Substiute Parts

LVC25FR270EV

OhmiteIn Stock: 741LVC25FR270EV Datasheet

Current PartRFQ

CRM2512-FX-R270ELF

Bourns Inc.In Stock: 1079CRM2512-FX-R270ELF Datasheet

MFR RecommendedRFQ

RL73H3AR27FTDF

TE Connectivity Passive ProductIn Stock: 2878RL73H3AR27FTDF Datasheet

MFR RecommendedRFQ

RL73H3AR27FTE

TE Connectivity Passive ProductIn Stock: 16447RL73H3AR27FTE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match Exactly):

• Resistance value: 270 mOhms
• Tolerance: ±1%
• Package / Case: 2512 (6432 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Number of Terminations: 2
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation:

• Power Rating: Substitutes may equal or exceed 1W (higher power rating provides additional thermal margin)
• Operating Temperature Range: Substitutes may exceed the original range (-40°C ~ 125°C)
• Physical dimensions: Minor variations within package specification tolerance are acceptable

The three identified substitutes meet all critical parameters. Two substitutes (RL73H3AR27FTE and RL73H3AR27FTDF) maintain the 1W power rating, while one substitute (CRM2512-FX-R270ELF) provides enhanced 2W capability.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are qualified replacements for the LVC25FR270EV based on electrical and mechanical compatibility. Selection should be based on the following factors:

RL73H3AR27FTE (TE Connectivity Passive Product):

• Highest inventory availability (16,371 pcs)
• Identical 1W power rating to original
• Active product status with extended operating temperature range (-55°C ~ 155°C)
• ROHS3 compliant with REACH unaffected status
• Recommended for applications requiring maximum supply continuity

RL73H3AR27FTDF (TE Connectivity Passive Product):

• Substantial inventory availability (2,867 pcs)
• Identical 1W power rating to original
• Active product status with extended operating temperature range (-55°C ~ 155°C)
• ROHS3 compliant with REACH unaffected status
• Alternative TE Connectivity option with equivalent specifications

CRM2512-FX-R270ELF (Bourns Inc.):

• Enhanced 2W power rating provides additional thermal margin
• Active product status with extended operating temperature range (-55°C ~ 155°C)
• ROHS3 compliant with REACH unaffected status
• Suitable for applications with higher power dissipation requirements or thermal stress conditions

All substitutes maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage processes.

Frequently Asked Questions (FAQ)

Q: Can RL73H3AR27FTE directly replace LVC25FR270EV in existing designs? A: Yes. Both parts share identical electrical specifications (270 mOhms ±1%, 1W) and mechanical compatibility (2512 package, 2 terminations). The TE Connectivity part is pin-compatible and functionally equivalent for current sense applications.

Q: What is the advantage of the CRM2512-FX-R270ELF 2W variant? A: The 2W power rating provides additional thermal headroom in applications with sustained or peak current conditions. This higher rating does not affect electrical performance but reduces junction temperature rise under load, extending component life in thermally constrained environments.

Q: Are all substitutes suitable for moisture-sensitive applications? A: Yes. All substitute parts maintain MSL 1 (Unlimited) rating, identical to the original LVC25FR270EV. This classification indicates no moisture sensitivity limitations for storage, handling, or manufacturing processes.

Q: Do the substitutes maintain the same physical dimensions? A: The substitutes are mechanically compatible within 2512 package specification tolerances. Minor dimensional variations exist: RL73H3AR27FTE and RL73H3AR27FTDF measure 0.250" L x 0.122" W versus the original 0.250" L x 0.130" W. CRM2512-FX-R270ELF measures 0.248" L x 0.122" W. These variations remain within standard PCB footprint tolerances and do not affect assembly or performance.

Q: What is the temperature coefficient significance for current sense applications? A: All parts maintain ±100ppm/°C temperature coefficient, ensuring consistent resistance stability across the operating temperature range. This specification is critical for precision current measurement accuracy in temperature-varying environments.

Q: Are there supply chain advantages to selecting one substitute over another? A: RL73H3AR27FTE offers the highest inventory availability (16,371 pcs), providing superior supply continuity. RL73H3AR27FTDF and CRM2512-FX-R270ELF offer alternative sourcing options with active product status and established manufacturing processes.