USM21PT
THRU
CHENMKO ENTERPRISE CO.,LTD
SURFACE MOUNT GLASS PASSIVATED
SUPER FAST SILICON RECTIFIER
VOLTAGE RANGE 50 - 1000 Volts CURRENT 2.0 Amperes
USM28PT
FEATURES
* For surface mounted applications
* Low profile package
* Built-in strain relief
* Superfast recovery times for high efficiency
* Metallurgically bonded construction
* Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
* Glass passivated junction
SMA
* High temperature soldering guaranteed :
260oC/10 seconds at terminals
0.110(2.80)
0.094(2.40)
0.065(1.65)
0.049(1.25)
(2)
(1)
0.181(4.60)
0.165(4.20)
MECHANICAL DATA
Case: JEDEC SMA molded plastic
Terminals: Solder plated, solderable per MIL-STD-750,
Method 2026
Polarity: Indicated by cathode band
Weight: 0.002 ounces, 0.064 gram
0.012(0.310)
0.006(0.150)
0.090(2.30)
0.075(1.90)
0.060(1.52)
0.030(0.76)
(
)(max)
0.008 0.203
0.212(5.40)
0.189(4.80)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25oC ambient temperature unless otherwise specified.
Single phase, half wave, 60 HZ, resistive or inductive load.
For capacitive load, derate current by 20%.
Dimensions in inches and (millimeters)
SMA
MAXIMUM RATINGES ( At TA = 25oC unless otherwise noted )
RATINGS
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
SYMBOL
VRRM
USM21PT USM22PT USM23PT USM24PT USM25PT USM26PT USM27PT USM28PT UNITS
50
35
50
100
70
200
140
200
300
210
300
400
280
400
600
420
600
800
560
800
1000
700
Volts
Volts
Volts
VRMS
Maximum DC Blocking Voltage
VDC
100
1000
Maximum Average Forward Rectified Current TL = 100oC
IO
2.0
50
Amps
Amps
Peak Forward Surge Current 8.3 ms single half sine-wave
superimposed on rated load (JEDEC method)
IFSM
Typical Junction Capacitance (Note 1)
CJ
30
20
pF
oC
Operating and Storage Temperature Range
TJ, TSTG
-65 to +150
ELECTRICAL CHARACTERISTICS ( At TA = 25oC unless otherwise noted )
CHARACTERISTICS
SYMBOL
USM21PT USM22PT USM23PT USM24PT USM25PT USM26PT USM27PT USM28PT UNITS
Maximum Instantaneous Forward Voltage at 2.0 A DC
VF
0.95
1.27
1.75
Volts
Maximum DC Reverse Current
@ TA = 25oC
@ TA = 100oC
5.0
uAmps
IR
100
uAmps
nSec
at Rated DC Blocking Voltage
Maximum Reverse Recovery Time (Note 2)
trr
35
45
2002-5
NOTES : 1. Measured at 1.0 MHZ and applied reverse voltage of 4.0 volts
2. Test Conditions : IF = 0.5 A, IR = -1.0 A, IRR = -0.25 A