MBRB1645-E3/45 Equivalent & Substitute Parts

Part Overview

The MBRB1645-E3/45 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 45 V DC reverse voltage and 16 A average rectified current in a surface mount TO-263AB (D2PAK) package. This component is classified as Last Time Buy, indicating discontinued production with limited inventory availability. Identification of equivalent and substitute parts is necessary to ensure design continuity and supply chain reliability for applications requiring 45 V / 16 A Schottky rectification performance.

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
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	200	µA @ 45 V
Mounting Type	Surface Mount	—
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	—
Operating Temperature - Junction	-65°C ~ 150°C	—
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the MBRB1645-E3/45 is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 45 V
Current - Average Rectified (Io): 16 A
Mounting Type: Surface Mount
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB or compatible variant
Technology: Schottky

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: 630 mV nominal
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: -65°C ~ 150°C minimum
RoHS Status: ROHS3 Compliant

Parts are grouped into two categories:

Category 1 - Manufacturer Recommended (Vishay): Parts with identical electrical specifications and active product status, offering direct replacement with enhanced availability.

Category 2 - Parametric Equivalent (Vishay & IXYS): Parts meeting all primary equivalence criteria with minor variations in secondary parameters (reverse leakage current, forward voltage tolerance, operating temperature range, or package variant designation).

Parameter Comparison

Parameter	MBRB1645-E3/45	MBRB1645-M3/I	VS-MBRB1645TRL-M3	VS-MBRB1645TRR-M3	DSS16-0045AS-TRL
Manufacturer	Vishay	Vishay	Vishay	Vishay	IXYS
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	670 mV @ 15 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 @ 45 V	200 µA @ 35 V	200 µA @ 35 V	500 µA @ 45 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-263-3, D2PAK, TO-263AB	TO-263-3, D2PAK, TO-263AB	TO-263-3, D2PAK, TO-263AB	TO-263-3, D2PAK, TO-263AB	TO-263-3, D2PAK, TO-263AB
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 175°C
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MBRB1645-M3/I (Vishay - Manufacturer Recommended)

This part is the primary recommended substitute. It maintains identical electrical specifications to the MBRB1645-E3/45 across all critical parameters: 45 V reverse voltage, 16 A average rectified current, 630 mV forward voltage at 16 A, and -65°C to 150°C operating temperature range. The MBRB1645-M3/I carries Active product status with 1136 units in stock, ensuring supply continuity. It includes AEC-Q101 automotive qualification and Automotive grade designation, providing enhanced reliability documentation. ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating match the original part. This part is suitable for direct replacement in all applications.

VS-MBRB1645TRL-M3 and VS-MBRB1645TRR-M3 (Vishay - Parametric Equivalent)

Both parts are Vishay Schottky rectifiers with identical primary electrical specifications: 45 V reverse voltage, 16 A average rectified current, 630 mV forward voltage at 16 A, and fast recovery speed. Operating temperature range (-65°C to 150°C) and RoHS3 compliance are identical to the original part. These parts differ in reverse leakage current specification (200 µA @ 35 V versus 200 µA @ 45 V on the original), which represents a minor variation within acceptable tolerance for most applications. Both carry Active product status with 877 and 780 units in stock respectively. The primary distinction between these two parts is packaging format: VS-MBRB1645TRL-M3 and VS-MBRB1645TRR-M3 are supplied in Tape & Reel format, suitable for automated assembly processes.

DSS16-0045AS-TRL (IXYS - Parametric Equivalent)

This IXYS Schottky rectifier meets the primary equivalence criteria: 45 V reverse voltage, 16 A average rectified current, fast recovery speed, and TO-263AB package compatibility. Forward voltage specification is 670 mV @ 15 A, representing a 40 mV increase compared to the 630 mV @ 16 A specification of the original part. Reverse leakage current is specified at 500 µA @ 45 V, which is 2.5 times higher than the original 200 µA @ 45 V specification. Operating temperature range extends to -55°C to 175°C, providing wider high-temperature capability. This part carries Active product status with 856 units in stock and ROHS3 compliance. The DSS16-0045AS-TRL is suitable for applications where the higher reverse leakage current and forward voltage are within design tolerance.

Frequently Asked Questions (FAQ)

Q: Can MBRB1645-M3/I be used as a direct replacement for MBRB1645-E3/45?

A: Yes. The MBRB1645-M3/I is electrically and mechanically identical to the MBRB1645-E3/45 across all critical parameters: 45 V reverse voltage, 16 A average rectified current, 630 mV forward voltage at 16 A, fast recovery speed, and TO-263AB package. The primary difference is product status: MBRB1645-M3/I is Active with enhanced availability, while MBRB1645-E3/45 is Last Time Buy. Direct replacement is supported without design modification.

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

A: Both parts are electrically identical Vishay Schottky rectifiers with 45 V reverse voltage and 16 A average rectified current. The designation difference (TRL versus TRR) reflects internal Vishay product line variants. Both are supplied in Tape & Reel packaging format suitable for automated assembly. Electrical performance and package dimensions are equivalent.

Q: Why does DSS16-0045AS-TRL have higher reverse leakage current (500 µA @ 45 V) compared to the original part (200 µA @ 45 V)?

A: Reverse leakage current variation is a characteristic difference between IXYS and Vishay Schottky rectifier designs. The DSS16-0045AS-TRL specification of 500 µA @ 45 V is within acceptable tolerance for most rectification applications. Selection of this part depends on whether the application design can accommodate the higher leakage current without exceeding thermal or efficiency requirements.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the TO-263-3, D2PAK (2 Leads + Tab) package designation with TO-263AB supplier device package specification. PCB footprint compatibility is confirmed across MBRB1645-M3/I, VS-MBRB1645TRL-M3, VS-MBRB1645TRR-M3, and DSS16-0045AS-TRL. No PCB redesign is required for substitution.

Q: What is the significance of the Last Time Buy status on MBRB1645-E3/45?

A: Last Time Buy status indicates that Vishay has discontinued production of this part number. Current inventory of 1765 units represents the final available stock. Once depleted, the part will no longer be available from the manufacturer. Substitution to an Active product status part (MBRB1645-M3/I, VS-MBRB1645TRL-M3, VS-MBRB1645TRR-M3, or DSS16-0045AS-TRL) is recommended to ensure long-term supply availability for production and field service requirements.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed—MBRB1645-M3/I, VS-MBRB1645TRL-M3, VS-MBRB1645TRR-M3, and DSS16-0045AS-TRL—carry ROHS3 Compliant status, matching the original MBRB1645-E3/45 specification. All parts also carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or handling.

Q: Which substitute part is recommended for automotive applications?

A: MBRB1645-M3/I is designated as Automotive grade with AEC-Q101 qualification, making it the preferred choice for automotive applications requiring enhanced reliability documentation and qualification traceability. This part maintains identical electrical specifications to the original while providing automotive-specific certifications.

Q: Can VS-MBRB1645TRL-M3 or VS-MBRB1645TRR-M3 be used in manual assembly processes?

A: These parts are supplied in Tape & Reel (TR) packaging format, which is optimized for automated pick-and-place assembly. Manual assembly is possible but less efficient than tube packaging. For manual assembly processes, MBRB1645-M3/I may be preferable if available in tube packaging format.

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