DS18009 Rev. 3 - 3 1 of 3 ZM4728A-ZM4764A
ZM4728A - ZM4764A
1.0W SURFACE MOUNT ZENER DIODE
Features
·
Case: MELF, Glass
·
Terminals: Solderable per MIL-STD-202,
Method 208
·
Polarity: Cathode Band
·
Approx. Weight: 0.25 grams
Mechanical Data
·
1.0W Power Dissipation
·
3.9V - 100V Nominal Zener Voltages
·
Standard V
Z
Tolerance is 5%
@ T
A
= 25°C unless otherwise specified
Characteristic Symbol Value Unit
Zener Current (see Table page 2)
I
Z
P
d/
V
z
mA
Power Dissipation @ T
A
= 25°C
P
d
1W
Thermal Resistance - Junction to Ambient Air
R
qJA
170 K/W
Forward Voltage @ I
F
= 200 mA
V
F
1.2 V
Operating & Storage Temperature Range
T
j
,T
STG
-65 to +200 °C
MELF
Dim Min Max
A
4.80 5.20
B
2.40 2.60
C
0.55 Nominal
All Dimensions in mm
C
A
B
Maximum Ratings
Notes: 1. Measured under thermal equilibrium and DC (I
ZT
) test conditions.
2. The Zener impedance is derived from the 60Hz AC voltage which results when an AC current having an RMS value equal to
10% of the Zener current (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
. Zener impedance is measured at two points to insure a
sharp knee on the breakdown curve and to eliminate unstable units.
NOT RECOMMENDED FOR NEW DESIGN,
USE SMAZ SERIES (SMA PACKAGE)
