V3PAL45-M3/I Equivalent & Substitute Parts

Part Overview

The V3PAL45-M3/I is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 45 V DC reverse voltage and 3 A average rectified current. The device is packaged in DO-221BC (SMPA) surface mount configuration with fast recovery characteristics suitable for high-frequency switching applications. This part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when electrical parameters, mechanical packaging, and operational characteristics align within the specified tolerances for this diode category, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	45	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	540 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	450	µA @ 45 V
Package / Case	DO-221BC, SMA Flat Leads Exposed Pad	—
Operating Temperature - Junction	-40 to 150	°C
Technology	Schottky	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the V3PAL45-M3/I is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io): 3 A
Voltage - Forward (Vf) (Max) @ If: 540 mV @ 3 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 450 µA @ 45 V

Mechanical Parameters (Must Match):

Package / Case: DO-221BC, SMA Flat Leads Exposed Pad
Mounting Type: Surface Mount

Operational Parameters (Must Match):

Operating Temperature - Junction: -40°C to 150°C
Technology: Schottky

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
Product Status: Active

Substitute parts identified within this specification maintain identical functional and physical characteristics, enabling direct circuit board replacement without design modification or performance impact.

Parameter Comparison

Parameter	V3PAL45-M3/I	V3PAL45HM3_A/I	Match
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	✓
Current - Average Rectified (Io)	3 A	3 A	✓
Voltage - Forward (Vf) (Max) @ If	540 mV @ 3 A	540 mV @ 3 A	✓
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	✓
Current - Reverse Leakage @ Vr	450 µA @ 45 V	450 µA @ 45 V	✓
Package / Case	DO-221BC, SMA Flat Leads Exposed Pad	DO-221BC, SMA Flat Leads Exposed Pad	✓
Operating Temperature - Junction	-40°C to 150°C	-40°C to 150°C	✓
Technology	Schottky	Schottky	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Product Status	Active	Active	✓
Series	—	TMBS®	—
Grade	—	Automotive	—
Qualification	—	AEC-Q101	—

Engineering Selection Recommendations

Both the V3PAL45-M3/I and V3PAL45HM3_A/I maintain Active product status with full RoHS3 compliance and identical electrical and mechanical specifications. Selection between these parts is based on application-specific requirements:

V3PAL45-M3/I is suitable for general-purpose rectification applications requiring 45 V, 3 A Schottky diode performance in DO-221BC surface mount packaging.

V3PAL45HM3_A/I is qualified to AEC-Q101 automotive standards and carries Automotive grade designation, making it appropriate for automotive and mission-critical applications requiring enhanced reliability documentation and traceability. This part is part of the TMBS® series and includes specified capacitance characteristics (450 pF @ 4 V, 1 MHz).

Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical core electrical parameters, forward voltage characteristics, reverse leakage specifications, and thermal operating range. Direct substitution is permissible based on application compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can V3PAL45HM3_A/I replace V3PAL45-M3/I in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 45 V reverse voltage, 3 A average rectified current, 540 mV forward voltage drop at 3 A, fast recovery characteristics, and DO-221BC surface mount packaging. Direct board-level substitution is permissible without circuit modification.

Q: What is the difference between these two part numbers?

A: The V3PAL45HM3_A/I includes automotive-grade qualification (AEC-Q101) and is designated as part of the TMBS® series with specified capacitance characteristics. The V3PAL45-M3/I is a standard industrial-grade variant. Both maintain identical electrical performance and packaging.

Q: Are both parts RoHS3 compliant?

A: Yes. Both V3PAL45-M3/I and V3PAL45HM3_A/I are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: What is the operating temperature range for these diodes?

A: Both parts operate across a junction temperature range of -40°C to 150°C, suitable for industrial and automotive environments.

Q: Can these parts be used interchangeably in automotive applications?

A: The V3PAL45HM3_A/I carries AEC-Q101 automotive qualification and is the specified choice for automotive applications. The V3PAL45-M3/I may be used in automotive applications where automotive qualification is not a contractual requirement, provided electrical and thermal specifications are met.

Q: What is the reverse leakage current specification?

A: Both parts specify 450 µA maximum reverse leakage current at 45 V reverse bias.

Q: Are these parts available in other package types?

A: The specifications provided cover only the DO-221BC (SMPA) surface mount package configuration. Other package variants may exist under different part numbers.

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