900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






MDD

HER257 Datasheet Preview

HER257 Datasheet

HIGH EFFICIENCY RECTIFIERS

No Preview Available !

HER251 THRU HER258
0.042(1.1)
0.040(1.0)
R-3
φ 0.160( 4.1 )
φ0.138 ( 3.5 )
HIGH EFFICIENCY RECTIFIERS
Reverse Voltage - 50 to 1000 Volts Forward Current - 2.5 Amperes
FEATURES
The plastic package carries Underwriters Laboratory
Flammability Classification 94V-0
High speed switching for high efficiency
Low reverse leakage
High forward surge current capability
High temperature soldering guaranteed:
250 C/10 seconds,0.375(9.5mm) lead length,
5 lbs. (2.3kg) tension
MECHANICAL DATA
Min.1.0 ( 25.4 )
0.160(4.1)
0.138(3.5)
Min.1.0 ( 25.4 )
Dimensions in inches and (millimeters)
Case: JEDEC R-3 molded plastic body
Terminals: Plated axial leads, solderable per MIL-STD-750,
Method 2026
Polarity: Color band denotes cathode end
Mounting Position: Any
Weight:0.012 ounce, 0.58 grams
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
Single phase half-wave 60Hz,resistive or inductive load,for capacitive load current derate by 20%.
MDD Catalog Number
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
0.375(9.5mm) lead length at TA=50 C
Peak forward surge current
8.3ms single half sine-wave superimposed on
rated load (JEDEC Method)
Maximum instantaneous forward voltage at 2.5A
Maximum DC reverse current TA=25 C
at rated DC blocking voltage TA=100 C
Maximum reverse recovery time (NOTE 1)
Typical junction capacitance (NOTE 2)
Typical thermal resistance (NOTE 3)
Operating junction and storage temperature range
SYMBOLS
HER
251
HER
252
VRRM
VRMS
VDC
50 100
35 70
50 100
HER HER HER HER
253 254 255 256
200 300 400 600
140 210 280 420
200 300 400 600
HER
257
800
560
800
HER
258
1000
700
1000
UNITS
VOLTS
VOLTS
VOLTS
I(AV) 2.5
Amps
IFSM
VF
IR
trr
CJ
RθJA
TJ,TSTG
60.0
1.0
50
30.0
1.3
5.0
100.0
50.0
-65 to +150
1.70
70
20.0
Amps
Volts
µA
ns
pF
C/W
C
Note:1.Reverse recovery condition IF=0.5A,IR=1.0A,Irr=0.25A
2.Measured at 1MHz and applied reverse voltage of 4.0V D.C.
3.Thermal resistance from junction to ambient at 0.375(9.5mm)lead length,P.C.B. mounted
MDD ELECTRONIC




MDD

HER257 Datasheet Preview

HER257 Datasheet

HIGH EFFICIENCY RECTIFIERS

No Preview Available !

RATINGS AND CHARACTERISTIC CURVES HER251 THRU HER258
FIG. 1- FORWARD CURRENT DERATING CURVE
3
Single Phase Half Wave 60HZ
Resistive or Inductive Load
2.0
1
0
0
25 50 75 100 125 150 175 200
AMBIENT TEMPERATURE, C
FIG. 3-TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
20
TJ=25 C
10 PULSE WIDTH=300 µs
1%DUTY CYCLE
1
0.1
HER251-HER253
HER254-HER255
HER256-HER258
0.01
0.2 0.6 1.0 1.4 1.8 2.0
INSTANTANEOUS FORWARD VOLTAGE,
VOLTS
FIG. 2-MAXIMUM NON-REPETITIVE PEAK FORWARD
SURGE CURRENT
60
50
40
30
20 8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
10
1 10
NUMBER OF CYCLES AT 60 Hz
100
FIG. 4-TYPICAL REVERSE CHARACTERISTICS
1,000
100
TJ=100 C
10
1
TJ=25 C
0.1
0.01 0
20 40
60 80 100
PERCENT OF PEAK REVERSE VOLTAGE,%
FIG. 5-TYPICAL JUNCTION CAPACITANCE
200
100
TJ=25 C
FIG. 6-TYPICAL TRANSIENT THERMAL IMPEDANCE
100
10
10
1
HER251-HER255
HER256-HER258
1
0.1
1.0
10 100
REVERSE VOLTAGE,VOLTS
0.1
0.01
0.1 1
10
t,PULSE DURATION,sec.
MDD ELECTRONIC
100


Part Number HER257
Description HIGH EFFICIENCY RECTIFIERS
Maker MDD
PDF Download

HER257 Datasheet PDF






Similar Datasheet

1 HER251 HIGH EFFICIENT RECTIFIER DIODES
EIC discrete Semiconductors
2 HER251 (HER251 - HER258) Plastic High-Efficiency Rectifiers
SIYU
3 HER251 HIGH EFFICIENCY RECTIFIERS
MDD
4 HER251 HIGH EFFICIENCY RECTIFIER
MIC
5 HER251 HIGH EFFICIENCY RECTIFIER
MEI SEMI
6 HER251G (HER251G - HER258G) Plastic High-Efficiency Rectifiers
SIYU
7 HER251G HIGH EFFICIENCY GLASS PASSIVATED RECTIFIER
MIC
8 HER252 HIGH EFFICIENT RECTIFIER DIODES
EIC discrete Semiconductors
9 HER252 (HER251 - HER258) Plastic High-Efficiency Rectifiers
SIYU





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy