Voltage:
11- 100 Volts
Power: 1.0 Watts
CZ
RA4741 - CZRA4764
- For surf ace mounted applications in order to
optimize board space
- Low profile package
- Built-in strain relief
- Glass passiv ated junction
- Low inductance
- Typical I
R
less than 5.0u
U
A above 11V
- High temper ature soldering :
260C / 10 seconds at terminals
- Plastic package has Underwriters Laboratory
Flammability Classification 94V-O
M
DS0208021A
Page 1
FEATURES
Case: JEDEC DO-214AC, Molded plastic
over passivated junction
Terminals: Solder plated, solderable per
MIL-STD-750, method 2026
Polarity: Color band denotes positive end(cathode)
Standard Packaging: 12mm tape(EIA-481)
Weight: 0.002 ounce, 0.064 gram
MECHANICAL DATA
0.008(0.20)
0.004(0.10)
0.067(1.70)
0.051(1.29)
0.091(2.31)
0.067(1.70)
0.059(1.50)
0.035(0.89)
0.110(2.79)
0.086(2.18)
0.180(4.57)
0.160(4.06)
0.012(0.31)
0.006(0.15)
0.209(5.31)
0.185(4.70)
DO-214AC (SMA)
Dimensions in inches and (millimeters)
SURFACE MOUNT ZENER DIODE
SURFACE MOUNT ZENER DIODE
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COMCHIP
Ratings at 25C ambient temperature unless otherwise specified.
SYMBOL
VALUE
UNITS
Peak Pulse Power Dissipation on T
A
= 50C (Note A)
Derate above 50C
P
D
1.0
6.67
Watts
mW/C
Peak forward Surge Current 8.3ms single half sine-wave
superimposed on rated load(JEDEC Method) (Note B)
I
FSM
10
Amps
Operating Junction and Storage Temperature Range
T
J
,T
STG
-55 to +150 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.
Maximum Ratings and Electrical Characterics
SURFACE MOUNT ZENER DIODE
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COMCHIP
COMCHIP
MDS0208021A
Page 2
SURFACE MOUNT ZENER DIODE
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SURFACE MOUNT ZENER DIODE
www.comchip.com.tw
COMCHIP
COMCHIP
I
ZK
V
R
(Volts)
(mA)
(Ohms)
(Ohms)
(mA)
(uA)
(Volts)
Ir - mA
CZRA4741
11
23
8
700
0.25
5
8.4
414
CZRA4742
12
21
9
700
0.25
5
9.1
380
CZRA4743
13
19
10
700
0.25
5
9.9
344
CZRA4744
15
17
14
700
0.25
5
11.4
304
CZRA4745
16
15.5
16
700
0.25
5
12.2
285
CZRA4746
18
14
20
750
0.25
5
13.7
250
CZRA4747
20
12.5
22
750
0.25
5
15.2
225
CZRA4748
22
11.5
23
750
0.25
5
16.7
205
CZRA4749
24
10.5
25
750
0.25
5
18.2
190
CZRA4750
27
9.5
35
750
0.25
5
20.6
170
CZRA4751
30
8.5
40
1000
0.25
5
22.8
150
CZRA4752
33
7.5
45
1000
0.25
5
25.1
135
CZRA4753
36
7
50
1000
0.25
5
27.4
125
CZRA4754
39
6.5
60
1000
0.25
5
29.7
115
CZRA4755
43
6
70
1500
0.25
5
32.7
110
CZRA4756
47
5.5
80
1500
0.25
5
35.8
95
CZRA4757
51
5
95
1500
0.25
5
38.8
90
CZRA4758
56
4.5
110
2000
0.25
5
42.6
80
CZRA4759
62
4
125
2000
0.25
5
47.1
70
CZRA4760
68
3.7
150
2000
0.25
5
51.7
65
CZRA4761
75
3.3
175
2000
0.25
5
56
60
CZRA4762
82
3
200
3000
0.25
5
62.2
55
CZRA4763
91
2.8
250
3000
0.25
5
69.2
50
CZRA4764
100
2.5
350
3000
0.25
5
76
45
NOTE:
3. Zener Voltage (V
Z
) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining
ELECTRICAL CHARACTERISTICS
(T
A
=25C unless otherwise noted) (V
F
=1.2Volts Max, I
F
=200mA for all types.)
Device
(Note 1.)
Nominal
Zener
Voltage V
Z
@ I
ZT
(Note 2, 3)
Test
current
I
ZT
Maximum Zener Impedance
(Note 4)
Leakage Current
Surge Current
@T
A
=25C
(Note 5)
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
I
R
B. Matched sets.
the lead temperature (T
L
) at 30C 1C, from the diode body.
4. Zener Impedance (Z
Z
) Derivation. The zener impedance is derived from the 60 cycle ac voltage, which results when
1. Tolerance and Type Number Designation. The type numbers listed have a standard tolerance on the nominal zener
voltage of 5%.
2. Specials Available Include:
A. Nominal zener voltages between the voltages shown and tighter voltage tolerances.
is as described in Figure 5.
an ac current having an rms value equal to 10% of the dc zener current (I
ZT
or I
ZK
) is superimposed on I
ZT
or I
ZK
.
5. Surge Current (Ir) Non-Repetitive. The rating listed in the electrical characteristics table is maximum peak,
non-repetitive, reverse surge current of 1/2 square wave or equivalent sine wave pulse of 1/120 second
duration superimposed on the test current, I
ZT
, per JEDEC registration; however, actual device capability
SURFACE MOUNT ZENER DIODE
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SURFACE MOUNT ZENER DIODE
www.comchip.com.tw
COMCHIP
COMCHIP
MDS0208021A
Page3
RATING AND CHARACTERISTICS CURVES
CZRA4741 THRU CZRA4764
1.25
1.0
0.75
0.50
0.25
0
0 20 40 60 80 100 120 140 160 180 200
L = LEAD LENTGH TO
HEAT SINK
TL, LEAD TEMPERATURE
Fig. 1-POWER TEMPERATURE DERATING CURVE
RANGE
+12
+10
+8.0
+6.0
+4.0
+2.0
0
-2.0
-4.0
2
3
4
5
6
7
8
9 10 11 12
V
Z
@ I
ZT
VZ, ZENER VOLTAGE (VOLTS)
100
70
50
30
20
10
7.0
5.0
3.0
2.0
1.0
10 20 30 50
70 100
RANGE
V
Z
@ I
ZT
VZ, ZENER VOLTAGE (VOLTS)
Fig. 2-TEMPERATURE COEFFICIENTS
(-55C TO +150C TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.)
175
150
125
100
75
50
25
0
0 .1 .2 .3
.4 .5 .6 .7 .8 .9 1.0
L, LEAD LENGTH TO HEAT SINK (INCKES)
20mA
+6.0
+4.0
+2.0
0
-2.0
-4.0
3
4
5
6
7 8
V
Z
@ I
ZT
TA = 25C
1.0mA
0.01mA
NOTE:BELOW 3 VOLTS AND ABOVE 8
CHANGES IN ZENER CURRENT DO
AFFECT TEMPERATURE
VZ, ZENER VOLTAGE (VOLTS)
Fig.3-TYPICAL THERMAL RESISTANCE VERSUS LEAD
LENGTH
Fig. 4-EFFECT OF ZENER CURRENT
P
D
,
M
A
X
I
M
U
M
PO
W
E
R
DIS
SIP
A
T
I
O
N
(
W
A
T
TS)
VZ
,
T
E
M
P
E
RA
TURE
CO
EFFI
CIEN
T
(
m
V/C
)
VZ
,
T
E
M
P
E
RA
TURE
CO
EFFI
CIEN
T(mV
/W
)
JL
,
J
U
N
CTI
O
N
T
O
L
EAD
T
HE
RM
AL
R
ESIS
T
A
NC
E
(C
/W)
VZ,
T
EM
PER
A
T
UR
E
C
O
E
FF
ICIE
NT
(
mV/w
)
SURFACE MOUNT ZENER DIODE
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SURFACE MOUNT ZENER DIODE
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COMCHIP
COMCHIP
MDS0208021A
Page 4
RATING AND CHARACTERISTICS CURVES
CZRA4741 THRU CZRA4764
100
70
50
30
20
10
7.0
5.0
3.0
2.0
1.0
0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100 200 500
11V-91V NON-REPETITIVE
0.8V-10V NON-REPETITIVE
5% DUTY CYCLE
10% DUTY CYCLE
20% DUTY CYCLE
RECTANGULAR WAVEFORM
TJ = 2
PRIOR TO INITIAL
PULSE
PW, PULSE WIDTH
This graph represents 90 percentile data point.
For worst-case design characteristics, multiply surge power by 2/3
Fig. 5-MAXIMUM SURGE POWER
1000
500
200
100
50
20
10
5.0
2.0
1.0
0.1
0.2 0.5
1.0
2.0 5.0
10
20
50 100
47V
27V
0.8V
TJ = 25C
I
Z
(ms) = 0.1I
Z
(dc)
f = 60Hz
IZ, ZENER CURRENT (mA)
1000
700
500
200
100
70
50
20
10
7
5
2
1
1.0 2.0 3.0 5.0 7.0 10 20 30 50 70 100
TJ = 25C
I
Z
(ms) = 0.1I
Z
(dc)
f = 60Hz
I
Z
= 1.0mA
5.0mA
20mA
IZ, ZENER CURRENT (mA)
Fig. 6-EFFECT OF ZENER CURRENT ON ZENER
IMPEDANCE
Fig. 7-EFFECT OF ZENER VOLTAGE ON ZENER
IMPEDANCE
Ppk,
pea
k su
rge
pow
er
(w
atts
)
Zz,
dy
nam
ic imp
edan
ce (
ohms
)
Zz,
dy
nam
ic imp
edan
ce (
ohms
)
5C
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