US3AB~US3MB

ROHS

Revision March 1,2022

www.unsemi.com.tw

www.unsemi.com.tw

Maximum Ratings and Electrical Characteristics

For technical questions, contact: tech@unsemi.com.tw

Specifications are subject to change without notice.

Please refer to www.unsemi.com.tw for current information.

1/3

Surface Mount Ultrafast Recovery Rectifier

Features

Mechanical Data



For surface mounted applications



Low Profile Package



High efficiency



Lead free in Comply with EU RoHS 2011/65/EU directives



Glass passivated chip junction



Easy to Pick and Place



Case: SMB



Quantity Per Reel : 3,000pcs



Approx. Weight: 0.095g / 0.003oz



Terminals: Solderable per MIL-STD-750, Method 2026

Ratings at 25℃ ambient temperature unless otherwise specified.

Single phase half-wave 60Hz, resistive or inductive load, for capacitive load current derate by 20%.

Parameter

Symbol

Units

US3AB US3BB US3DB US3GB US3JB US3KB US3MB

Maximum Repetitive Peak Reverse Voltage

Maximum RMS Voltage

Maximum DC Blocking Voltage

Maximum Instantaneous Forward Voltage at 3A

Maximum Reverse Recovery Time

VRRM

VRRS

VDC

IF(AV)

IFSM

VF

IR

IR

trr

R

θJA

R

θJC

TJ,Tstg

V

V

V

A

A

V

μA

μA

ns

℃/

W

℃/

W

℃

Peak Forward Surge Current 8.3ms Single

Half Sine Wave Superimposed on Rated Load

Maximum Average Forward Rectified Current

Maximum DC Reverse Current

at Rated DC Blocking Voltage

Ta=25℃

Ta=125℃

Typical Thermal Resistance

（

1）

（

2）

Note:(1)Measured with IF=0.5A, IR=1A, Irr=0.25A

(2) P.C.B. mounted with 2.0" X 2.0" (5 X 5cm) copper pad areas.

Operating and Storage Temperature Range

50

100

100

70

200

200

140

400

280

400

600

700

800

1000

560

420

600

90

50

-55 ~ +150

15

45

75

100

5.0

1.68

1.3

1.0

3.0

800

1000

35

50

1：Cathode

2：Anode

SMB

2

1