3EZ3.9D10 Series SILICON ZENER DIODES
VZ : 3.9 - 400 Volts
PD : 3 Watts
FEATURES :
* Complete Voltage Range 3.9 to 400 Volts
* High peak reverse power dissipation
* High reliability
* Low leakage current
* Pb / RoHS Free
MECHANICAL DATA
* Case : DO-41 Molded plastic
* Epoxy : UL94V-O rate flame retardant
* Lead : Axial lead solderable per MIL-STD-202,
method 208 guaranteed
* Polarity : Color band denotes cathode end
* Mounting position : Any
* Weight : 0.339 gram
MAXIMUM RATINGS
Rating at 25 °C ambient temperature unless otherwise specified

Rating Symbol Value Unit
DC Power Dissipation at TL = 75 °C (Note1) PD 3.0 W
Maximum Forward Voltage at IF = 200 mA VF 1.5 V
Maximum Thermal Resistance Junction to Ambient Air (Note2) RθJA 60 K / W
Junction Temperature Range TJ - 55 to + 175 °C
Storage Temperature Range Ts - 55 to + 175 °C
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.
Rev. 02 : April 1, 2005
0 40 80 120 160 200
TL, LEAD TEMPERATURE (°C)
Page 1 of 3 Rev. 02 : April 1, 2005
1
2
3
4
5
L = LEAD LENGTH
TO HEAT SINK
PD
, M
AX
IM
UM
D
IS
SI
PA
TIO
N
(W
AT
TS
)
Fig. 1 Power Temperature Derating Curve
DO - 41
Dimensions in inches and ( millimeters )
1.00 (25.4)
MIN.0.107 (2.7)0.080 (2.0)
0.205 (5.2)
0.166 (4.2)
1.00 (25.4)
MIN.0.034 (0.86)0.028 (0.71)
0
L = 1/8"
L = 3/8"
L = 1"