LITE-ON
SEMICONDUCTOR
LZ55C-WS Series
ZENER VOLTAGE- 5.1 to 36 Volts
POWER DISSIPATION - 500 mWatts
SURFACE MOUNT ZENER DIODE
FEATURES
For surface mounted application
Silicon epitaxial planar diode
Ultra small surface mount package
Low leakage current
5% tolerance device of Vz
B
0805
A
5V1
C
MECHANICAL DATA
Case : 0805
Case Material: "Green" molding compound, UL
flammability classification 94V-0, (No Br. Sb. Cl)
Terminals: Lead Free Plating
Polarity : Color band denotes cathode
Weight : Approx.10mg
D
0805
Dim.
A
B
C
Min.
1.80
1.05
0.75
0.25
Max.
2.20
1.45
0.95
0.65
5V
1
D
All Dimensions in millimeter
Maximum Ratings and Thermal Characteristics
Characteristic
Total Power Dissipation
Thermal Resistance Junction to Ambiant Air
Operating and Storage Temperature Range
@ T
A
= 25
℃
unless otherwise specified
Symbol
P
TOT
Value
500
300
Units
mW
℃
/W
℃
R
θ
JA
T
J
, T
STG
-65 to +175
Electrical Characteristics
@ T
A
= 25
℃
unless otherwise specified
Parameters
Forward Voltage
Symbol
V
F
Test Condition
IF = 200 mA
Max.
1.5
Unit
V
REV. 2, Oct-2008, KSJS04
RATING AND CHARACTERISTIC CURVES
LZ55C-WS Series
Fig.1 - POWER DISSIPATION DERATING CURVE
600
TOTAL POWER DISSIPATION (mW)
120
Fig.4 - ZENER CURRENT v.s ZENER VOLTAGE
500
ZENER CURRENT ( mA )
100
400
80
Ptot = 500mW
T
J
= 25
℃
300
60
200
40
100
20
0
0
25
50
75
100
125
150
175
200
AMBIENT TEMPERATURE , (
℃
)
0
0
5
10
15
20
25
30
35
40
45
ZENER BREAKDOWN VOLTAGE , ( V )
Fig.2-TYPICAL FORWARD CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT (mA)
100
200
Fig.5-TYPICAL JUNCTION CAPACITANCE
JUNCTION CAPACITANCE (pF)
10
T
J
= 25
℃
150
f =1MHz
VR=2V
T
J
=25
℃
1
100
0.1
Pulse Width: 300us
50
0.01
0.0
0.2
0.4
0.6
0.8
1.0
INSTANTANEOUS FORWARD VOLTAGE , ( V )
0
0
5
10
15
20
25
30
ZENER BREAKDOWN VOLTAGE , (V)
Fig.3 - TYPICAL CHANGE OF WORKING UNDER OPERATING
1000
Recommended Mounting Pad Layout
T
J
= 25
℃
VOLTAGE CHANGE , ( mV )
0.51
Typ.
100
1.40
Typ.
10
I
Z
= 5mA
1.22
Typ.
1
0
5
10
15
20
25
30
All dimensions in millimeter
ZENER BREAKDOWN VOLTAGE , ( V )
RATING AND CHARACTERISTIC CURVES
LZ55C-WS Series
Zener Voltage Range
(Note1)
Type
Number
Marking
Code
Vz @ I
ZT
Min (V)
LZ55C2V0WS
LZ55C2V2WS
LZ55C2V4WS
LZ55C2V7WS
LZ55C3V0WS
LZ55C3V3WS
LZ55C3V6WS
LZ55C3V9WS
LZ55C4V3WS
LZ55C4V7WS
LZ55C5V1WS
LZ55C5V6WS
LZ55C6V2WS
LZ55C6V8WS
LZ55C7V5WS
LZ55C8V2WS
LZ55C9V1WS
LZ55C10WS
LZ55C11WS
LZ55C12WS
LZ55C13WS
LZ55C15WS
LZ55C16WS
LZ55C18WS
LZ55C20WS
LZ55C22WS
LZ55C24WS
LZ55C27WS
LZ55C30WS
LZ55C33WS
LZ55C36WS
2V0
2V2
2V4
2V7
3V0
3V3
3V6
3V9
4V3
4V7
5V1
5V6
6V2
6V8
7V5
8V2
9V1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
1.90
2.09
2.28
2.57
2.85
3.14
3.42
3.71
4.09
4.47
4.85
5.32
5.89
6.46
7.13
7.79
8.65
9.50
10.45
11.40
12.35
14.25
15.20
17.10
19.00
20.90
22.80
25.65
28.50
31.35
34.20
Max (V)
2.10
2.31
2.52
2.84
3.15
3.47
3.78
4.1
4.52
4.94
5.36
5.88
6.51
7.14
7.88
8.61
9.56
10.50
11.55
12.60
13.65
15.75
16.80
18.90
21.00
23.10
25.20
28.35
31.50
34.65
37.80
Test
Current
I
ZT
mA
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
Maximum Zener
Impedance
Z
ZK
@
Z
ZT
@ I
ZT
I
ZK
=1.0mA
Maximum Reverse
Current
I
R
uA
100
75
50
10
4
2
2
2
1
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
@V
R
v
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.0
5.0
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
Ω
85
85
85
85
85
85
85
85
80
70
50
30
10
8
7
7
10
15
20
20
26
30
40
50
55
55
80
80
80
80
80
Ω
600
600
600
600
600
600
600
600
600
600
550
450
200
150
50
50
50
70
70
90
110
110
170
170
220
220
220
220
220
220
220
NOTE1 : Tested with pulses, Tp < 100ms
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