VS-MBRB1645PBF Schottky Diode Equivalent & Substitute Parts

Part Overview

The VS-MBRB1645PBF is a 45V, 16A Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, packaged in TO-263AB (D2PAK) surface mount configuration. This component is classified as discontinued at DiGi Electronics, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part operates across a junction temperature range of -65°C to 150°C and meets ROHS3 compliance standards.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	45	V
Current - Average Rectified (Io)	16	A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A	mV
Speed	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 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the VS-MBRB1645PBF is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io): 16 A
Voltage - Forward (Vf) (Max) @ If: 630 mV @ 16 A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 200 µA (at specified voltage)
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Mounting Type: Surface Mount
Technology: Schottky
Operating Temperature - Junction: -65°C to 150°C
RoHS Status: ROHS3 Compliant

Packaging Variations Permitted: Substitute parts may differ in packaging format (Tube vs. Tape & Reel) without affecting electrical compatibility. Product status variations (Active, Last Time Buy, Discontinued) are noted for procurement planning.

All identified substitutes maintain identical electrical performance and mechanical compatibility with the original VS-MBRB1645PBF specification.

Parameter Comparison

Parameter	VS-MBRB1645PBF	VS-MBRB1645-M3	MBRB1645-E3/45	VS-MBRB1645TRL-M3	VS-MBRB1645TRR-M3
Voltage - DC Reverse (Vr) (Max)	45 V	45 V	45 V	45 V	45 V
Current - Average Rectified (Io)	16 A	16 A	16 A	16 A	16 A
Voltage - Forward (Vf) (Max) @ If	630 mV @ 16 A	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)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	200 µA @ 45 V	200 µA @ 35 V	200 µA @ 45 V	200 µA @ 35 V	200 µA @ 35 V
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-65 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C	-65 to 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active	Last Time Buy	Active	Active
Packaging Format	Not specified	Tube	Tube	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitutes (Active Status):

VS-MBRB1645-M3 and VS-MBRB1645TRL-M3 / VS-MBRB1645TRR-M3 are recommended as primary substitutes. Both maintain full electrical equivalence to the VS-MBRB1645PBF and carry Active product status, ensuring long-term availability and supply chain stability. These parts are manufactured by Vishay General Semiconductor - Diodes Division under the same base product number (MBRB1645) and meet identical ROHS3 compliance requirements.

Secondary Substitute (Last Time Buy Status):

MBRB1645-E3/45 provides parametric equivalence with identical electrical specifications. However, this part carries Last Time Buy status, indicating limited future availability. Selection of this part should be evaluated against long-term procurement requirements.

Packaging Considerations:

VS-MBRB1645-M3: Tube packaging, suitable for manual assembly and lower-volume production
VS-MBRB1645TRL-M3 / VS-MBRB1645TRR-M3: Tape & Reel packaging, optimized for automated pick-and-place assembly and high-volume manufacturing

All substitutes maintain identical TO-263AB (D2PAK) mechanical footprint and surface mount compatibility.

Frequently Asked Questions (FAQ)

Q: Can VS-MBRB1645-M3 be used as a direct replacement for VS-MBRB1645PBF?

A: Yes. VS-MBRB1645-M3 maintains identical electrical specifications across all critical parameters: 45V reverse voltage, 16A average rectified current, 630mV forward voltage drop at 16A, and fast recovery Schottky technology. Both parts use TO-263AB (D2PAK) surface mount packaging. The primary difference is packaging format (Tube vs. unspecified) and product status (Active vs. Discontinued).

Q: What is the difference between VS-MBRB1645TRL-M3 and VS-MBRB1645TRR-M3?

A: Both parts are electrically identical and meet the same specifications as VS-MBRB1645PBF. The designation difference (TRL vs. TRR) indicates tape reel configuration variants. Both are supplied in Tape & Reel format optimized for automated assembly. Selection between these variants depends on specific reel configuration requirements for your assembly equipment.

Q: Why does MBRB1645-E3/45 show "Last Time Buy" status?

A: Last Time Buy status indicates this part number will be discontinued after a specified date. While currently available with 1765 pieces in stock and full electrical equivalence to VS-MBRB1645PBF, procurement planning should prioritize Active status alternatives (VS-MBRB1645-M3, VS-MBRB1645TRL-M3, VS-MBRB1645TRR-M3) for designs requiring long-term component availability.

Q: Are there any electrical performance differences between these substitutes?

A: All substitutes maintain the core electrical specifications: 45V reverse voltage, 16A current rating, 630mV forward voltage drop, and fast recovery characteristics. Minor variations exist in reverse leakage current measurement conditions (200 µA @ 45V vs. 200 µA @ 35V), which do not affect functional equivalence. Capacitance specifications are provided for some variants (1400pF @ 5V, 1MHz) but are not specified for others; this does not impact rectifier performance in standard applications.

Q: Can I mix packaging formats (Tube vs. Tape & Reel) in the same design?

A: Yes. Tube and Tape & Reel packaging formats contain electrically identical components. Mixing formats is acceptable from an electrical standpoint. However, assembly process optimization may favor consistent packaging within a production run to streamline handling and placement procedures.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited). REACH status is Unaffected for all variants. These certifications ensure compatibility with modern manufacturing standards and environmental regulations.

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