LVC25JR300EV Equivalent & Substitute Parts

Part Overview

The LVC25JR300EV is a 300 mOhms ±5% 1W chip resistor in 2512 (6432 Metric) package manufactured by Ohmite. This thick film current sense resistor with moisture resistant properties operates across -40°C to 125°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility for current sensing applications.

Substiute Parts

LVC25JR300EV

OhmiteIn Stock: 1114LVC25JR300EV Datasheet

Current PartRFQ

RHC2512JTR300

Stackpole Electronics IncIn Stock: 1111RHC2512JTR300 Datasheet

MFR RecommendedRFQ

RL73H3AR30FTDF

TE Connectivity Passive ProductIn Stock: 4584RL73H3AR30FTDF Datasheet

MFR RecommendedRFQ

RL73H3AR30FTE

TE Connectivity Passive ProductIn Stock: 2915RL73H3AR30FTE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LVC25JR300EV is determined by the following core parameters: resistance value (300 mOhms), package type (2512), composition (thick film), and temperature coefficient (±100ppm/°C). Tolerance and power rating variations are permitted within the constraints of the application circuit design. All substitute parts must maintain the same physical package footprint and thermal characteristics to ensure PCB compatibility and thermal performance equivalence.

The identified substitutes are grouped as follows:

Group 1 - Enhanced Power Rating: RHC2512JTR300 provides doubled power capacity (2W vs 1W) while maintaining all core electrical parameters and package compatibility.

Group 2 - Improved Tolerance: RL73H3AR30FTDF and RL73H3AR30FTE offer tighter tolerance (±1% vs ±5%) with equivalent power rating and package specifications, suitable for applications requiring higher precision.

Parameter Comparison

Engineering Selection Recommendations

RHC2512JTR300 is the primary substitute for direct replacement in applications where the original 1W power rating is adequate. This part maintains ROHS3 compliance, extends the operating temperature range to -55°C ~ 155°C, and provides doubled power dissipation capacity for thermal margin. Active product status ensures long-term availability.

RL73H3AR30FTDF is suitable for applications requiring improved tolerance performance (±1% vs ±5%). This part maintains ROHS3 compliance and active product status. The extended operating temperature range (-55°C ~ 155°C) provides additional thermal headroom compared to the original specification.

RL73H3AR30FTE offers identical electrical and mechanical specifications to RL73H3AR30FTDF but carries RoHS non-compliant status. Selection of this part requires verification of regulatory requirements for the end application.

Frequently Asked Questions (FAQ)

Q: Can RHC2512JTR300 be used as a direct replacement for LVC25JR300EV?

A: Yes. Both parts share identical resistance (300 mOhms), tolerance (±5%), package (2512), composition (thick film), and temperature coefficient (±100ppm/°C). The increased power rating (2W vs 1W) provides additional thermal capacity without affecting electrical performance in the circuit.

Q: What is the difference between RL73H3AR30FTDF and RL73H3AR30FTE?

A: Both parts are electrically and mechanically identical with 300 mOhms ±1% resistance, 1W power rating, and 2512 package. The primary difference is RoHS compliance status: RL73H3AR30FTDF is ROHS3 compliant while RL73H3AR30FTE is RoHS non-compliant.

Q: Are the substitute parts physically compatible with the original PCB layout?

A: Yes. All substitute parts use the 2512 (6432 Metric) package with equivalent footprint dimensions. Physical dimensions vary slightly (length 0.248" to 0.250", width 0.122" to 0.130", height 0.026" to 0.028"), but these variations remain within standard PCB design tolerances for this package class.

Q: Which substitute offers the best tolerance performance?

A: RL73H3AR30FTDF and RL73H3AR30FTE both provide ±1% tolerance compared to the original ±5%. This tighter tolerance is beneficial for precision current sensing applications where measurement accuracy is critical.

Q: What is the temperature operating range difference between the original and substitutes?

A: The original LVC25JR300EV operates from -40°C to 125°C. All three substitutes extend this range to -55°C to 155°C, providing broader thermal coverage for demanding environments.