1. DATA SHEET
BZX84B SERIES
SURFACE MOUNT SILICON ZENER DIODES
VOLTAGE
4.3 - 39 Volts
POWER
410 mWatts
SOT- 23
Unit: inch (mm)
FEATURES
• Planar Die construction
• 410mW Power Dissipation
.056(1.40)
.047(1.20)
.119(3.00)
.110(2.80)
• Ideally Suited for Automated Assembly Processes
• Both normal and Pb free product are available :
Normal : 80~95% Sn, 5~20% Pb
Pb free: 99% Sn above
.007(.20)MIN
MECHANICAL DATA
• Case: SOT-23, Molded Plastic
• Terminals: Solderable per MIL-STD-202G, Method 208
• Polarity: See Diagram Below
• Approx. Weight: 0.008 grams
• Mounting Position: Any
.083(2.10)
.066(1.70)
.006(.15)
.002(.05)
.006(.15)MAX
.020(.50)
.013(.35)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
P ar m et r
a
e
M axi um For ar Volage D r p atI =10m A
m
w d
t
o
F
P ow erD i si aton ( ot s A )at25
O
C
s p i N e
P eak For ar S ur e C urent 8. m s si gl hal
w d
g
r , 3
n e
f
si e- ave superm posed on r t d l ad ( E D E C m et od) ( ot s B )
n w
i
ae o
J
h
N e
O per tng Juncton and S t r geTem per t r R ange
ai
i
oa
aue
S ym bol
V
F
P
D
FSM
I
Val e
u
0.
9
410
2.
0
- 5 t +150
5 o
.044(1.10)
.035(0.90)
.103(2.60)
U nis
t
V
mW
A m ps
O
T
J
SINGLE
( Note C )
NOTES:
A. Mounted on 5.0mm
2
(.013mm thick) land areas.
B. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum.
C. For Structure Purpose only.
.086(2.20)
C
STAD-DEC.02.2004
PAGE . 1
TEMPERATURE COEFFICIENT,(mA/
O
C)
8
7
6
5
4
3
2
1
TEMPERATURE COEFFICIENT,(mA/
O
C)
100
10
0
-1
-2
-3
2
3
4
5
6
7
8
9
10
11
12
1
10
100
NOMINAL ZENER VOLTAGE,VOLTS
NOMINAL ZENER VOLTAGE,VOLTS
Fig.1 TEMPERATURE COEFFICENTS
Fig.2 TEMPERATURE COEFFICENTS
1000
DYNAMIC IMPEDANCE,W
FORWARD CURRENT,mA
1000
T
J
=25 C
I
Z(AC)=0.1
I
Z(DC)
F=1 kHZ
O
IZ = 1 mA
100
5 mA
20 mA
100
10
10
150 C
75
O
C
O
25 C
O
5C
O
1
1
10
NORMAL ZENER VOLTAGE, VOLTS
100
1
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
FORWARD VOLTAGE, VOLTS
Fig.3 EFFECT OF ZENER VOLTAGE ON ZENER IMPEDANCE
Fig.4 TYPICAL FORWARD VOLTAGE
1000
0.6
POWER DISSIPATION, Watts
0 V BIAS
1 V BIAS
T
A
=25 C
O
T
A
=25
o
C
0.5
0.4
0.3
CAPACITANCE,pF
100
BIASAT
50% OF VZ NOM
10
0.2
0.1
1
0
0
25
50
75
O
1
10
NORMAL ZENER VOLTAGE, VOLTS
100
100
125
150
TEMPERATURE ( C)
Fig.5 STEADY STATE POWER DERATING
Fig.6 TYPICAL CAPACITANCE
STAD-DEC.02.2004
PAGE . 3
100
T
A
=25
o
C
100
T
A
=25
o
C
ZENER CURRENT,mA
10
ZENER CURRENT,mA
10
1
1
0.1
0.1
0.01
0
2
4
6
8
10
12
0.01
10
30
50
70
90
ZENER VOLTAGE, VOLTS
Fig.7 ZENER VOLTAGE VERSUS ZENER CURRENT
ZENER VOLTAGE, VOLTS
Fig.8 ZENER VOLTAGE VERSUS ZENER CURRENT
1000
LEAKAGE CURRENT,uA
100
10
1
0.1
0.01
0.001
0.0001
0.00001
0
10
20
30
40
50
60
70
+150 C
O
+25 C
-55 C
80
90
O
O
NORMAL ZENER VOLTAGE, VOLTS
Fig.9 TYPICAL LEAKAGE CURRENT
STAD-DEC.02.2004
PAGE . 4
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