MBRB1645 Schottky Diode Equivalent & Substitute Parts

Part Overview

The MBRB1645 is a 45V, 16A Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division in a surface mount TO-263AB (D2PAK) package. This component is classified as obsolete, necessitating identification of equivalent alternatives for ongoing design support and procurement. Substitute parts maintain identical electrical performance characteristics while offering improved product status and compliance certifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	45	V
Current - Average Rectified (Io)	16	A
Voltage - Forward (Vf) Maximum @ If	630 mV @ 16 A	mV
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	200 µA @ 45 V	µA
Technology	Schottky	—
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65°C to 150°C	°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MBRB1645 is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

Voltage - DC Reverse (Vr) Maximum: 45 V
Current - Average Rectified (Io): 16 A
Voltage - Forward (Vf) Maximum @ If: 630 mV @ 16 A
Technology: Schottky
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Mounting Type: Surface Mount
Operating Temperature - Junction: -65°C to 150°C

All substitute parts listed maintain these parameters within specification. Variations in packaging format (tube versus tape & reel) and product status do not affect electrical interchangeability. The MBRB1645-E3/45, VS-MBRB1645TRL-M3, and VS-MBRB1645TRR-M3 are parametric equivalents suitable for direct replacement in circuit applications.

Parameter Comparison

Parameter	MBRB1645	MBRB1645-E3/45	VS-MBRB1645TRL-M3	VS-MBRB1645TRR-M3
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Technology	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) Maximum	45 V	45 V	45 V	45 V
Current - Average Rectified (Io)	16 A	16 A	16 A	16 A
Voltage - Forward (Vf) Maximum @ If	630 mV @ 16 A	630 mV @ 16 A	630 mV @ 16 A	630 mV @ 16 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 45 V	200 µA @ 45 V	200 µA @ 35 V	200 µA @ 35 V
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-65°C to 150°C	-65°C to 150°C	-65°C to 150°C	-65°C to 150°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Last Time Buy	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MBRB1645-E3/45 is suitable for applications requiring tube packaging format. This part carries Last Time Buy status, indicating limited future availability. RoHS3 compliance provides regulatory advantage over the obsolete MBRB1645.

VS-MBRB1645TRL-M3 and VS-MBRB1645TRR-M3 are recommended for new designs and ongoing production. Both parts maintain Active product status, ensuring long-term supply continuity. Both are ROHS3 compliant and available in tape & reel packaging suitable for automated assembly processes. The distinction between TRL and TRR designations relates to reel configuration; electrical performance is identical.

Selection between tape & reel variants (VS-MBRB1645TRL-M3 or VS-MBRB1645TRR-M3) depends on assembly equipment compatibility and procurement volume requirements. All three substitute parts are electrically interchangeable with the obsolete MBRB1645 within the specified parameter range.

Frequently Asked Questions (FAQ)

Q: Can VS-MBRB1645TRL-M3 and VS-MBRB1645TRR-M3 be used interchangeably in the same circuit?

A: Yes. Both parts are parametric equivalents with identical electrical specifications. The TRL and TRR designations indicate different reel configurations for automated assembly. Selection depends on equipment compatibility, not circuit performance.

Q: What is the difference between MBRB1645-E3/45 and the tape & reel variants?

A: MBRB1645-E3/45 is supplied in tube packaging, while VS-MBRB1645TRL-M3 and VS-MBRB1645TRR-M3 are supplied in tape & reel format. Electrical specifications are identical. Packaging choice affects assembly process and handling requirements.

Q: Is the MBRB1645 still available for procurement?

A: The MBRB1645 is classified as obsolete. Current inventory is 2230 pieces. For new designs and ongoing production, substitute parts with Active status (VS-MBRB1645TRL-M3 or VS-MBRB1645TRR-M3) are recommended to ensure supply continuity.

Q: Are all substitute parts RoHS compliant?

A: Yes. MBRB1645-E3/45, VS-MBRB1645TRL-M3, and VS-MBRB1645TRR-M3 are all ROHS3 compliant. The original MBRB1645 is RoHS non-compliant.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: 45V reverse voltage rating, 16A average rectified current, 630mV forward voltage at 16A, Schottky technology, TO-263AB package, surface mount configuration, and -65°C to 150°C operating temperature range.

Q: Can the MBRB1645 be replaced with a different package type?

A: No. All substitute parts maintain the TO-263AB (D2PAK) package format. Package compatibility is a critical substitution requirement for PCB layout and thermal management.

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