1 W Surface Mount Zener Diode
ZS300-BL
Zener diodes
Formosa MS
SMA
0.185(4.8)
0.173(4.4)
0.012(0.3) Typ.
Features
* Plastic package has Underwriters Laboratory
Flammability Classification 94V-O Utilizing Flame
Retardant Epoxy Molding Compound.
* For surface mounted applications.
* Exceeds environmental standards of MIL-S-19500/228
* Low zener impedance
* Low profile package
0.110(2.8)
0.094(2.4)
0.165(4.2)
0.150(3.8)
0.067(1.7)
0.060(1.5)
0.040(1.0) Typ.
0.040 (1.0) Typ.
Mechanical data
Case : Molded plastic, JEDEC DO-214AC
Terminals : Solder plated, solderable per MIL-STD-750
Polarity : Indicated by cathode band
Mounting Position : Any
Weight : 0.0015 ounce, 0.05 gram
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
o
C ambient temperature unless otherwise specified
Storage and operating temperature range -55 to + 150
o
C
Zener
Breakdown
Voltage
V
Z
V
ZS300B
300
I
ZT
mA
5
Maximum Reverse
Current
@ Measurement
Voltage
Z
ZK
ohms
9000
V
R
V
285
I
R
uA
0.5
Maximum Forward
Voltage
@ I
F
= 0.2A
V
F
V
1.2
Dynamic Impedances
Z
ZT
ohms
5000
I
ZK
mA
0.25
Type
RATING AND CHARACTERISTIC CURVES (Z300-BL)
FIG. 1 - MAXIMUM CONTINUOUS POWER DISSIPARION
REVERSE POWER DISSPATION
WATTS
1.00
FIG. 2 - ZENER VOLTAGE VERSUS ZENER CURRENT
10
I
Z
ZENER CURRENT, mA
5.0
2.0
1.0
0.5
0.2
0.1
0.75
0.50
SINGLE PHASE
HALF WAVE
60H
Z
RESISTIVE OR
INDUCTIVE LOAD
0.25
0.00
25
50
75
100
125
150
175
100
150
200
250
300
350
400
LEAD TEMPERATURE,
o
C
FIG. 3 - TYPICAL INSTANTANEOUS
FORWARD CHARACTERISTICS
V
Z
ZENER VOLTAGE, VOLTS
FIG. 4 - TYPICAL REVERSE CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT,
AMPERES
10
10
4.0
1.0
0.4
0.1
0.04
0.01
0
20
40
60
80
100
120
140
1.0
INSTANTANEOUS REVERSE
CURRENT, uA
T
J
=25
o
C
0.1
TJ = 25 C
PULSE WIDTH=300ms
1% DUTY CYCLE
o
0.01
0.4
0.6
0.8
1.0
1.2
1.4
1.6
PERCENT OF RATED ZENER VOLTAGE, %
INSTANTANEOUS
FORWARD VOLTAGE, VOLTS
FIG. 5 - TYPICAL TEMPERATURE COEFFICIENTS
TEMPERATURE COEFFICIENTS
(mV/
o
C) @ I
ZT
1000
500
200
100
50
20
10
10
20
50
100
200
500
1000
V
Z
ZENER VOLTAGE @ I
ZT
, VOLTS
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