1SMAF5913B - 1SMAF5957B
SURFACE MOUNT SILICON ZENER DIODES
VOLTAGE RANGE: 3.3 - 240V
POWER: 1.5Wa t t s
Features
Complete Voltage Range 3.3 to 240 Volts
High peak reverse power dissipation
High reliability
B
Low leakage current
C
E
Mechanical Data
!
!
Case: SMAF,Molded Plastic
SMAF
Dim Min Max Typ
Terminals: Solder Plated, Solderable
D
A
B
C
D
E
H
L
4.75 4.85
3.68 3.72
4.80
3.70
2.60
1.00
per MIL-STD-750, Method 2026
Polarity:Color band denotes cathode end
Mounting Position:Any
H
!
!
!
2.57
2.63
L
0.097 1.03
1.38 1.42 1.40
0.13 0.17 0.15
0.63 0.67 0.65
Weight:0.0018 ounce, 0.064 grams
E
All Dimensions in mm
A
TA = 25ꢀC unless otherwise specified
Maximum Ratings
Rating
Symbol
Value
Unit
PD
DC Power Dissipation @ TL = 75 °C
Measured zero lead length(1" square copper pad, FR-4 board)
Derate above 75 °C
1.5
W
20
mW/°C
RӨJL
PD
°C/W
W
Thermal Resistance Junction to Lead
DC Power Dissipation @ Ta = 25 °C
50
0.5
mW/°C
°C/W
V
(FR-4 board) Derate above 25 °C
4.0
RӨJA
VF
Thermal Resistance Junction to Ambient
Maximum Forward Voltage at IF = 200 mA
Operating Junction and Storang Temperature Range
250
1.5
TJ, TSTG
- 65 to + 150
°C
Fig. 1 POWER TEMPERATURE DERATING CURVE
1.5
1.2
0.9
0.6
0.3
0
TL
Ta
0
25
50
75
100
125
150
175
T, TEMPERATURE (°C)
1 of 2
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