COMCHIP CZRA4743

SURFACE MOUNT ZENER DIODE
COMCHIP
www.comchip.com.tw
CZRA4741 - CZRA4764
Voltage: 11- 100 Volts
Power: 1.0 Watts
FEATURES
- 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 IR less than 5.0uA above 11V
- High temper ature soldering :
260°C / 10 seconds at terminals
- Plastic package has Underwriters Laboratory
Flammability Classification 94V-O
DO-214AC (SMA)
0.067(1.70)
0.051(1.29)
0.110(2.79)
0.086(2.18)
0.180(4.57)
0.160(4.06)
U
0.012(0.31)
0.006(0.15)
0.091(2.31)
0.067(1.70)
0.059(1.50)
0.035(0.89)
MECHANICAL DATA
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
0.209(5.31)
0.185(4.70)
0.008(0.20)
0.004(0.10)
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characterics
Ratings at 25°C ambient temperature unless otherwise specified.
Peak Pulse Power Dissipation on TA= 50°C (Note A)
Derate above 50°C
Peak forward Surge Current 8.3ms single half sine-wave
superimposed on rated load(JEDEC Method) (Note B)
Operating Junction and Storage Temperature Range
SYMBOL
PD
VALUE
1.0
6.67
IFSM
10
UNITS
Watts
mW/°C
Amps
TJ,TSTG
-55 to +150
°C
NOTES:
2
A. Mounted on 5.0mm (.013mm thick) land areas.
B. Measured on 8.3ms, single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum.
MDS0208021A
Page 1
SURFACE MOUNT ZENER DIODE
COMCHIP
www.comchip.com.tw
ELECTRICAL CHARACTERISTICS
(TA=25°C unless otherwise noted) (V F=1.2Volts Max, IF=200mA for all types.)
Device
(Note 1.)
CZRA4741
CZRA4742
CZRA4743
CZRA4744
CZRA4745
CZRA4746
CZRA4747
CZRA4748
CZRA4749
CZRA4750
CZRA4751
CZRA4752
CZRA4753
CZRA4754
CZRA4755
CZRA4756
CZRA4757
CZRA4758
CZRA4759
CZRA4760
CZRA4761
CZRA4762
CZRA4763
CZRA4764
Nominal
Zener
Voltage VZ
@ IZT
(Note 2, 3)
Test
current
IZT
(Volts)
(mA)
(Ohms)
(Ohms)
(mA)
(uA)
(Volts)
Ir - mA
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
23
21
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7
6.5
6
5.5
5
4.5
4
3.7
3.3
3
2.8
2.5
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56
62.2
69.2
76
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
Maximum Zener Impedance
(Note 4)
ZZT @ IZT ZZK @ IZK
IZK
Leakage Current
IR
Surge Current
@TA=25°C
(Note 5)
VR
NOTE:
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.
B. Matched sets.
3. Zener Voltage (VZ) Measurement. Guarantees the zener voltage when measured at 90 seconds while maintaining
the lead temperature (TL) at 30°C ± 1°C, from the diode body.
4. Zener Impedance (ZZ) Derivation. The zener impedance is derived from the 60 cycle ac voltage, which results when
an ac current having an rms value equal to 10% of the dc zener current (I ZT or IZK) is superimposed on IZT or IZK.
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
is as described in Figure 5.
MDS0208021A
Page 2
SURFACE MOUNT ZENER DIODE
COMCHIP
www.comchip.com.tw
RATING AND CHARACTERISTICS CURVES
PD, MAXIMUM POWER DISSIPATION
(WATTS)
CZRA4741 THRU CZRA4764
1.25
1.0
L = LEAD LENTGH TO
HEAT SINK
0.75
0.50
0.25
0
0
20
40
60 80 100 120 140 160 180 200
TL, LEAD TEMPERATURE
VZ, TEMPERATURE COEFFICIENT
(mV/°C)
Fig. 1-POWER TEMPERATURE DERATING CURVE
+12
+10
+8.0
+6.0
+4.0
+2.0
0
-2.0
-4.0
2
VZ @ IZT
RANGE
3
4
5
6
7
8
9
10 11 12
VZ, TEMPERATURE
COEFFICIENT(mV/W)
100
70
50
30
20
10
VZ @ IZT
RANGE
7.0
5.0
3.0
2.0
1.0
10
20
VZ, ZENER VOLTAGE (VOLTS)
30
50
70
100
VZ, ZENER VOLTAGE (VOLTS)
Fig. 2-TEMPERATURE COEFFICIENTS
(-55°C TO +150°C TEMPERATURE RANGE; 90% OF THE UNITS ARE IN THE RANGES INDICATED.)
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)
Fig.3-TYPICAL THERMAL RESISTANCE VERSUS LEAD
LENGTH
MDS0208021A
VZ, TEMPERATURE COEFFICIENT
(mV/w)
JL, JUNCTION TO LEAD THERMAL
RESISTANCE (°C/W)
175
+6.0
NOTE:BELOW 3 VOLTS AND ABOVE 8
CHANGES IN ZENER CURRENT DO
AFFECT TEMPERATURE
+4.0
20mA
+2.0
0
0.01mA
1.0mA
-2.0
-4.0
3
4
5
VZ @ IZT
TA = 25°C
6
7
8
VZ, ZENER VOLTAGE (VOLTS)
Fig. 4-EFFECT OF ZENER CURRENT
Page3
SURFACE MOUNT ZENER DIODE
COMCHIP
www.comchip.com.tw
RATING AND CHARACTERISTICS CURVES
CZRA4741 THRU CZRA4764
Ppk, peak surge power (watts)
100
11V-91V NON-REPETITIVE
70
50
5% DUTY CYCLE
0.8V-10V NON-REPETITIVE
30
20
10
RECTANGULAR WAVEFORM
TJ = 25°C PRIOR TO INITIAL
PULSE
10% DUTY CYCLE
7.0
5.0
3.0
20% DUTY CYCLE
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
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
Zz, dynamic impedance (ohms)
Zz, dynamic impedance (ohms)
1000
TJ = 25°C
IZ(ms) = 0.1IZ(dc)
f = 60Hz
500
200
100
47V
50
27V
20
10
5.0
0.8V
2.0
1.0
0.1
0.2
0.5
1.0
2.0
5.0
10
20
50
100
1000
700
500 I = 1.0mA
Z
200
100
5.0mA
70
50
20mA
20
10
7
5
2
1
1.0
2.0 3.0
TJ = 25°C
IZ(ms) = 0.1IZ(dc)
f = 60Hz
5.0 7.0
10
20 30
50 70 100
IZ, ZENER CURRENT (mA)
IZ, ZENER CURRENT (mA)
Fig. 6-EFFECT OF ZENER CURRENT ON ZENER
IMPEDANCE
Fig. 7-EFFECT OF ZENER VOLTAGE ON ZENER
IMPEDANCE
MDS0208021A
Page 4