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Vishay MBRB1645-E3/81

Vishay MBRB1645-E3/81 Schottky Diode, 45V 16A, TO-263AB

MPNMBRB1645-E3/81
End of Life

Vishay MBRB1645-/81 Schottky rectifier, 45 V reverse voltage, 16 A average rectified current, 630 mV forward drop at 16 A, TO-263AB (D²PAK) surface-mount package, Fast Recovery ≤ 500 ns, operating junction -65°C to 150°C.

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$2.02 / ea

1 in stock — maximum per order · 3–4 days lead time

Vishay MBRB1645-E3/81 datasheet (PDF)
PackagingTO-263-3, D²Pak (2 Leads + Tab), TO-263AB
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Sep 2026

Specifications

MBRB1645-E3/81 specifications
ParameterValue
Diode typeSchottky
MountingSurface Mount
Voltage - DC reverse (Vr)45 V
Voltage - forward (Vf) (Max) @ if630 mV @ 16 A
Current - reverse leakage @ vr200 µA @ 45 V
Current - average rectified16A
Operating temperature - junction-65°C ~ 150°C
SpeedFast Recovery =< 500ns, > 200mA (Io)
PackageTape & Reel (TR); Cut Tape (CT)
CaseTO-263-3, D²Pak (2 Leads + Tab), TO-263AB

Product details

16 A Schottky rectifier in D²PAK — power-stage fit

The MBRB1645-E3/81: The MBRB1645-/81: The Vishay MBRB1645-/81 is a 45 V, 16 A Schottky barrier rectifier in a TO-263AB (D²PAK) surface-mount package. It is designed for low-voltage, high-frequency rectification in switch-mode power supplies, freewheeling diodes, and polarity protection circuits where the Schottky's low forward voltage drop and fast recovery (≤ 500 ns) reduce switching losses.

630 mV forward drop at 16 A — conduction loss budget

At 16 A forward current, the maximum forward voltage is 630 mV. That 630 mV drop at full load produces about 10 W of conduction loss, which the D²PAK's exposed tab must sink to the PCB copper plane. Reverse leakage at 45 V is 200 µA — typical for a 45 V Schottky at 25°C junction. Leakage doubles with every 10°C rise, so at 125°C junction the leakage current can dominate the off-state power budget in a lightly loaded standby rail.

It is ROHS3 compliant.

Frequently asked questions

Is MBRB1645-E3/81 still in production?

Buyers need to know lifecycle status to avoid redesigns.

What is the price of MBRB1645-E3/81 in volume?

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Where can I buy MBRB1645-E3/81?

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What is the equivalent part for MBRB1645-E3/81?

Finding drop-in replacements is critical when stock is low.

Can I replace MBRB1645-E3/81 with MBRB1640?

Engineers need to verify compatibility to avoid rework.

What is the forward voltage of MBRB1645-E3/81 at 16A?

Design engineers need Vf for thermal calculations.