VLS252010ET-3R3M Equivalent & Substitute Parts

Part Overview

The VLS252010ET-3R3M is a 3.3 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 940 mA with a maximum DC resistance of 275 mOhm. This surface mount component in 1008 (2520 Metric) package is designed for power conversion and filtering applications. The part is marked as Not For New Designs, making identification of suitable alternatives essential for ongoing production and new circuit implementations.

Key Parameters

Parameter	Value
Inductance	3.3 µH
Inductance Tolerance	±20%
Current Rating	940 mA
DC Resistance (DCR)	275 mOhm Max
Core Material	Ferrite
Shielding	Shielded
Package	1008 (2520 Metric)
Operating Temperature	-40°C ~ 105°C
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Inductance Value: Must be 3.3 µH (±20% tolerance acceptable)
Current Rating: Must meet or exceed 940 mA saturation current
DC Resistance: Lower or equal to 275 mOhm preferred for thermal performance
Core Material: Ferrite or Iron core acceptable
Shielding: Must be shielded to maintain EMI performance
Package Footprint: 1008 (2520 Metric) or mechanically compatible nonstandard packages
Operating Temperature: Must support -40°C ~ 105°C minimum range
Compliance: ROHS3 compliant, REACH unaffected

Four substitute parts meet these criteria with varying performance characteristics and availability.

Parameter Comparison

Parameter	VLS252010ET-3R3M	VLS252010CX-3R3M-1	PA4335.332NLT	BWVT002520103R3M00	BWVT002520103R3T00
Manufacturer	TDK	TDK	Pulse Electronics	Pulse Electronics	Pulse Electronics
Inductance	3.3 µH	3.3 µH	3.3 µH	3.3 µH	3.3 µH
Inductance Tolerance	±20%	±20%	±20%	±20%	±30%
Current Rating (Amps)	0.940	1.25	1.7	1.08	1.08
Current - Saturation (Isat)	0.940 A	1.3 A	1.7 A	1.0 A	1.0 A
DC Resistance (DCR)	275 mOhm Max	186 mOhm Max	163 mOhm Max	220 mOhm	220 mOhm
Core Material	Ferrite	Ferrite	Iron	Ferrite	Ferrite
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded
Package / Case	1008 (2520 Metric)	Nonstandard	Nonstandard	1008 (2520 Metric)	1008 (2520 Metric)
Size / Dimension	2.50mm x 2.00mm	2.50mm x 2.00mm	2.70mm x 2.20mm	2.50mm x 2.00mm	2.50mm x 2.00mm
Height - Seated (Max)	1.00mm	1.00mm	1.20mm	1.02mm	1.02mm
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Product Status	Not For New Designs	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)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

VLS252010CX-3R3M-1 (TDK, Active Status)

This TDK substitute offers improved current handling at 1.25 A with reduced DC resistance of 186 mOhm, providing better thermal performance than the original part. Maintains identical operating temperature range and footprint dimensions. Recommended for applications requiring enhanced current capacity within the same thermal envelope.

PA4335.332NLT (Pulse Electronics, Active Status)

The Pulse Electronics PA4335.332NLT provides the highest current rating at 1.7 A with the lowest DC resistance at 163 mOhm. Features extended operating temperature to 125°C and includes self-resonant frequency specification at 25 MHz. Nonstandard package dimensions (2.70mm x 2.20mm) and increased height (1.20mm) require PCB layout verification. Suitable for high-current applications with thermal margin requirements.

BWVT002520103R3M00 and BWVT002520103R3T00 (Pulse Electronics, Active Status)

Both BWVT variants maintain the standard 1008 (2520 Metric) package with identical footprint compatibility. Current rating of 1.08 A exceeds the original 940 mA specification. Extended operating temperature range to 125°C and lower saturation current (1.0 A) compared to the original. BWVT002520103R3M00 maintains ±20% tolerance; BWVT002520103R3T00 specifies ±30% tolerance. Both are suitable for direct PCB replacement without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can VLS252010CX-3R3M-1 be used as a direct replacement for VLS252010ET-3R3M?

A: Yes. Both parts share identical inductance (3.3 µH), operating temperature range (-40°C ~ 105°C), and footprint dimensions (2.50mm x 2.00mm, 1.00mm height). The substitute offers improved current handling (1.25 A vs 940 mA) and lower DC resistance (186 mOhm vs 275 mOhm). No PCB modifications are required.

Q: What are the package compatibility considerations for PA4335.332NLT?

A: PA4335.332NLT uses a nonstandard package with dimensions 2.70mm x 2.20mm and height 1.20mm, compared to the standard 1008 (2520 Metric) footprint of 2.50mm x 2.00mm with 1.00mm height. PCB land pattern and clearance verification is necessary before implementation.

Q: Which substitute offers the best thermal performance?

A: PA4335.332NLT provides the lowest DC resistance at 163 mOhm and highest current rating at 1.7 A, resulting in minimal power dissipation. However, package footprint differences require layout validation.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All substitute parts (VLS252010CX-3R3M-1, PA4335.332NLT, BWVT002520103R3M00, and BWVT002520103R3T00) are ROHS3 compliant with MSL rating of 1 (Unlimited) and REACH unaffected status.

Q: What is the difference between BWVT002520103R3M00 and BWVT002520103R3T00?

A: Both parts are mechanically and electrically identical with one exception: BWVT002520103R3M00 specifies ±20% inductance tolerance, while BWVT002520103R3T00 specifies ±30% tolerance. Selection depends on circuit tolerance requirements.

Q: Can substitutes handle the original 940 mA current specification?

A: Yes. All substitutes exceed the original 940 mA rating: VLS252010CX-3R3M-1 (1.25 A), PA4335.332NLT (1.7 A), BWVT002520103R3M00 (1.08 A), and BWVT002520103R3T00 (1.08 A).

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