1SMAF4728A - 1SMAF4764A
SURFACE MOUNT SILICON ZENER DIODES
VOLTAGE RANGE: 3.3V - 100V
POWER: 1.0Wa t t s
Features
Complete voltage range 3.3 to 100 volts
!
!
!
!
High peak reverse power dissipation
High reliability
B
Low leakage current
C
E
! Standard zener voltage tolerance is ± 5
%
Mechanical Data
SMAF
Dim Min Max Typ
! Case: SMAF,Molded Plastic
D
A
B
C
D
E
H
L
4.75 4.85
3.68 3.72
4.80
3.70
2.60
1.00
H
! Terminals: Solder Plated, Solderable
2.57
2.63
L
per MIL-STD-750, Method 2026
0.097 1.03
1.38 1.42 1.40
0.13 0.17 0.15
0.63 0.67 0.65
!
!
!
Polarity:Color band denotes cathode end
Mounting Position:Any
E
All Dimensions in mm
Weight:0.0018 ounce, 0.064 grams
A
@ TA = 25°C unless otherwise specified
Maximum Ratings
Rating
Symbol
Value
Unit
DC Power Dissipation at TL = 50 C (Note1)
PD
1.0
Watt
°
Maximum Forward Voltage at IF = 200 mA
Maximum Thermal Resistance Junction to Ambient Air (Note2)
Junction Temperature Range
VF
1.2
Volts
K / W
R JA
q
170
TJ
- 55 to + 175
- 55 to + 175
C
C
°
°
Storage Temperature Range
Ts
Note :
(1) TL = Lead temperature at 3/8 " (9.5mm) from body
(2) Valid provided that leads are kept at ambient temperature at a distance of 10 mm from case.
Fig. 1 MAXIMUM CONTINUOUS POWER DERATING
1.25
1.00
0.75
0.50
P.C.B. Mounted on
0.31x0.31x0.08" (8x8x2mm)
copper areas pads
0.25
0
0
25
50
75
100
125
150
175
TL, LEAD TEMPERATURE (°C)
1 of 2
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