3W Silicon Zener Diodes
SZ55 Series
SMA/DO-214AC
Features
Complete Voltage Range 3.9 to
200
Volts
High peak reverse power dissipation
High reliability
Low leakage current
Mechanical Data
Case : SMA (DO-241AC) Molded plastic
Epoxy : UL94V-O rate flame retardant
Polarity : Color band denotes cathode end
Mounting position : Any
Weight : 0.064 gram
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25
o
C ambient temperature unless otherwise specified.
Rating
DC Power Dissipation at T
L
= 75
°
C (Note1)
Maximum Forward Voltage at I
F
= 200 mA
Maximum Thermal Resistance Junction to Ambient Air (Note2)
Junction Temperature Range
Storage Temperature Range
Note :
Symbol
P
D
V
F
R
θ
JA
T
J
Ts
Value
3.0
1.5
60
- 55 to + 175
- 55 to + 175
Unit
Watts
Volts
K/W
°
C
°
C
(1) T
L
= 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 Power Temperature Derating Curve
P
D
, MAXIMUM DISSIPATION
(WATTS)
5
L = LEAD LENGTH
4
3
2
1
0
L = 1"
L = 3/8"
L = 1/8"
TO HEAT SINK
0
40
80
120
160
200
T
L,
LEAD TEMPERATURE (
°
C)
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