LVC25FR510EV Equivalent & Substitute Parts

Part Overview

The LVC25FR510EV is a 510 mOhms ±1% 1W thick film chip resistor in 2512 (6432 Metric) package manufactured by Ohmite. This component is designed for current sense applications with moisture-resistant characteristics. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Resistance	510 mOhms
Tolerance	±1%
Power Rating	1W
Package / Case	2512 (6432 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-40°C ~ 125°C
Features	Current Sense, Moisture Resistant
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the LVC25FR510EV is determined by the following critical parameters:

Resistance Value: 510 mOhms ±1% (exact match required)
Package / Case: 2512 (6432 Metric) (physical and electrical compatibility)
Tolerance: ±1% (electrical precision requirement)
Composition: Thick Film (material consistency)
Temperature Coefficient: ±100ppm/°C (thermal stability)
RoHS Compliance: ROHS3 Compliant (regulatory requirement)
Moisture Sensitivity Level: 1 (Unlimited) (environmental robustness)

Substitute parts are grouped into two categories based on power rating:

Category 1 - Direct 1W Equivalents: Parts maintaining the original 1W power rating with identical electrical specifications. These provide pin-for-pin compatibility with no thermal derating considerations.

Category 2 - Upgraded 2W Alternatives: Parts with increased 2W power rating while maintaining all other electrical parameters. These offer enhanced thermal performance and extended operating temperature ranges, suitable for applications requiring additional thermal margin.

Parameter Comparison

Parameter	LVC25FR510EV (Original)	RL73H3AR51FTE	RL73H3AR51FTDF	RHC2512FTR510	RCWE2512R510FKEA
Manufacturer	Ohmite	TE Connectivity	TE Connectivity	Stackpole Electronics	Vishay Dale
Resistance	510 mOhms	510 mOhms	510 mOhms	510 mOhms	510 mOhms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	1W	1W	1W	2W	2W
Package / Case	2512 (6432 Metric)	2512 (6432 Metric)	2512 (6432 Metric)	2512 (6432 Metric)	2512 (6432 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-40°C ~ 125°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Features	Current Sense, Moisture Resistant	Current Sense	Current Sense	Moisture Resistant	Automotive AEC-Q200, Current Sense, Moisture Resistant
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (1W Rating)

RL73H3AR51FTE and RL73H3AR51FTDF from TE Connectivity Passive Product are active production equivalents with identical 1W power ratings and electrical specifications. Both parts maintain the current sense feature and extend the operating temperature range to -55°C ~ 155°C. RL73H3AR51FTE offers the highest inventory availability (15,519 pcs) and is suitable for applications requiring direct form-fit-function compatibility.

For Upgraded Performance (2W Rating)

RHC2512FTR510 from Stackpole Electronics Inc provides a 2W power rating upgrade while maintaining all critical electrical parameters. This part is recommended for applications requiring additional thermal margin or operating in higher ambient temperature environments.

RCWE2512R510FKEA from Vishay Dale offers a 2W power rating with automotive AEC-Q200 qualification and extended operating temperature range (-55°C ~ 155°C). This part is specified for automotive applications and provides the highest inventory availability (97,340 pcs) among all substitutes.

All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and are available in active production status, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can RL73H3AR51FTE directly replace LVC25FR510EV?

A: Yes. Both parts share identical resistance (510 mOhms), tolerance (±1%), power rating (1W), package (2512), composition (thick film), and temperature coefficient (±100ppm/°C). RL73H3AR51FTE extends the operating temperature range to -55°C ~ 155°C and is in active production.

Q: What is the difference between the 1W and 2W substitute options?

A: The 1W substitutes (RL73H3AR51FTE, RL73H3AR51FTDF) maintain the original power rating for direct compatibility. The 2W substitutes (RHC2512FTR510, RCWE2512R510FKEA) provide increased thermal capacity and extended operating temperature ranges (-55°C ~ 155°C vs. -40°C ~ 125°C), suitable for applications requiring additional thermal headroom.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and maintain MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original LVC25FR510EV specifications.

Q: Which substitute offers automotive qualification?

A: RCWE2512R510FKEA from Vishay Dale carries AEC-Q200 automotive qualification and is specified for automotive applications requiring enhanced reliability standards.

Q: Do the substitute parts maintain the current sense feature?

A: RL73H3AR51FTE, RL73H3AR51FTDF, and RCWE2512R510FKEA explicitly include current sense features. RHC2512FTR510 does not list current sense as a feature but maintains all electrical parameters required for current sensing applications.

Q: What is the physical package compatibility?

A: All substitute parts use the 2512 (6432 Metric) package with identical termination count (2). Dimensional variations are minimal (length 0.248" to 0.250", width 0.122" to 0.130", height 0.026" to 0.028"), ensuring PCB footprint compatibility.

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