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1N4747A-T50A [ONSEMI]

Zener 1W 5%;
1N4747A-T50A
型号： 1N4747A-T50A
厂家： ONSEMI    ONSEMI
描述：

Zener 1W 5%

二极管 齐纳二极管
文件： 总7页 (文件大小：445K)
中文：  中文翻译
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Licensed by ON Semiconductor,  
trademark of Semiconductor  
®
a
Components Industries, LLC for  
Zener Technology and Products.  
TAK CHEONG  
1 Watt DO-41 Hermetically  
Sealed Glass Zener Voltage  
Regulators  
Maximum Ratings  
Rating  
Symbol  
Value  
Unit  
Maximum Steady State Power Dissipation  
PD  
1.0  
W
@ TL ≤50°C, Lead Length = 3/8”  
6.67  
mW/°C  
°C  
Derate Above 50°C  
Operating and Storage  
Temperature Range  
TJ, Tstg  
-65 to +200  
AXIAL LEAD  
DO41  
Specification Features  
• Zener Voltage Range = 3.3 V to 91 V  
• ESD Rating of Class 3 (>16 KV) per Human Body Model  
• DO-41 Package (DO-204AL)  
• Double Slug Type Construction  
• Metallurgical Bonded Construction  
• Oxide Passivated Die  
Cathode  
Anode  
Mechanical Characteristics  
Case  
Finish  
: Double slug type, hermetically sealed glass  
: All external surfaces are corrosion resistant and leads are readily solderable.  
MARKING DIAGRAM  
Polarity : Cathode indicated by polarity band  
Mounting: Any  
L
1N  
47  
xxA  
YWW  
Maximum Lead Temperature for Soldering Purposes  
230°C, 1/16” from the case for 10 seconds  
L
= Logo  
= Device Code  
= Year  
1N47xxA  
Y
WW  
= Work Week  
Ordering Information  
Device  
Package  
Shipping  
1N47xxA  
Axial Lead  
Axial Lead  
Axial Lead  
Axial Lead  
Axial Lead  
2000 Units / Box  
1N47xxARL  
6000 Units / Tape & Reel  
6000 Units / Tape & Reel  
4000 Units / Tape & Ammo  
4000 Units / Tape & Ammo  
1N47xxARL2 *  
1N47xxATA  
1N47xxATA2 *  
* The “2” suffix refers to 26 mm tape spacing.  
Devices listed in bold italic are Tak Cheong Preferred  
devices. Preferred devices are recommended choices  
for future use and best overall value.  
March 2002 / A  
http://www.takcheong.com  
1
1N4728A Series  
ELECTRICAL CHARACTERISTICS (T = 25°C unless  
A
I
otherwise noted, V = 1.2 V Max., I = 200 mA for all types)  
F
F
I
F
Symbol  
Parameter  
V
Reverse Zener Voltage @ I  
Reverse Current  
Z
ZT  
I
ZT  
Z
I
Maximum Zener Impedance @ I  
Reverse Current  
ZT  
ZT  
V
Z
V
R
V
I
ZT  
ZK  
V
F
R
I
Z
ZK  
Maximum Zener Impedance @ I  
ZK  
I
Reverse Leakage Current @ V  
Breakdown Voltage  
R
R
V
R
I
F
Forward Current  
V
Forward Voltage @ I  
F
F
Zener Voltage Regulator  
I
r
Surge Current @ T = 25°C  
A
ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted, V = 1.2 V Max, I = 200 mA for all types)  
A
F
F
(3.)(4.)  
(5.)  
Zener Voltage  
(Volts)  
Zener Impedance  
Leakage Current  
(6.)  
V
@ I  
Z
ZT  
@ I  
Z
ZK  
@ I  
I @ V  
R
I
Z
ZT  
ZT  
ZK  
R
r
JEDEC  
Device  
(2.)  
Min  
Nom  
Max  
(mA)  
(Ω)  
(Ω)  
(mA)  
(µA Max)  
(Volts)  
(mA)  
1N4728A  
1N4729A  
1N4730A  
1N4731A  
1N4732A  
3.14  
3.42  
3.71  
4.09  
4.47  
3.3  
3.6  
3.9  
4.3  
4.7  
3.47  
3.78  
4.10  
4.52  
4.94  
76  
69  
64  
58  
53  
10  
10  
9
9
8
400  
400  
400  
400  
500  
1
1
1
1
1
100  
100  
50  
10  
10  
1
1
1
1
1
1380  
1260  
1190  
1070  
970  
1N4733A  
1N4734A  
1N4735A  
1N4736A  
1N4737A  
4.85  
5.32  
5.89  
6.46  
7.13  
5.1  
5.6  
6.2  
6.8  
7.5  
5.36  
5.88  
6.51  
7.14  
7.88  
49  
45  
41  
37  
34  
7
5
2
3.5  
4
550  
600  
700  
700  
700  
1
1
1
1
0.5  
10  
10  
10  
10  
10  
1
2
3
4
5
890  
810  
730  
660  
605  
1N4738A  
1N4739A  
1N4740A  
1N4741A  
1N4742A  
7.79  
8.65  
9.50  
10.45  
11.40  
8.2  
9.1  
10  
11  
8.61  
9.56  
10.50  
11.55  
12.60  
31  
28  
25  
23  
21  
4.5  
5
7
8
9
700  
700  
700  
700  
700  
0.5  
0.5  
0.25  
0.25  
0.25  
10  
10  
10  
5
6
550  
500  
454  
414  
380  
7
7.6  
8.4  
9.1  
12  
5
1N4743A  
1N4744A  
1N4745A  
12.4  
14.3  
15.2  
13  
15  
16  
13.7  
15.8  
16.8  
19  
17  
15.5  
10  
14  
16  
700  
700  
700  
0.25  
0.25  
0.25  
5
5
5
9.9  
11.4  
12.2  
344  
304  
285  
TOLERANCE AND TYPE NUMBER DESIGNATION  
2. The JEDEC type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.  
SPECIALS AVAILABLE INCLUDE:  
3. Nominal zener voltages between the voltages shown and tighter voltage tolerances. For detailed information on price, availability, and  
delivery, contact your nearest Tak Cheong representative.  
ZENER VOLTAGE (V ) MEASUREMENT  
Z
4. Tak Cheong Electronics guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (T ) at  
L
± 1°C, 3/8" from the diode body.  
30°C  
ZENER IMPEDANCE (Z ) DERIVATION  
Z
5. 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 or I ) is superimposed on I or I .  
ZT  
ZK  
ZT  
ZK  
SURGE CURRENT (I ) NON-REPETITIVE  
R
6. The rating listed in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave or equiv-  
alent sine wave pulse of 1/120 second duration superimposed on the test current, I , per JEDEC registration; however, actual device  
ZT  
capability is as described in Figure 5 of the General Data DO-41 Glass.  
http://www.takcheong.com  
2
1N4728A Series  
ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted, V = 1.2 V Max, I = 200 mA for all types) (continued)  
A
F
F
(8.)(9.)  
(10.)  
Zener Voltage  
(Volts)  
Zener Impedance  
Leakage Current  
(11.)  
V
@ I  
Z
ZT  
@ I  
Z
ZK  
@ I  
I @ V  
R
I
Z
ZT  
ZT  
ZK  
R
r
JEDEC  
Device  
(7.)  
Min  
Nom  
Max  
(mA)  
(Ω)  
(Ω)  
(mA)  
(µA Max)  
(Volts)  
(mA)  
1N4746A  
1N4747A  
17.1  
19.0  
18  
20  
18.9  
21.0  
14  
20  
22  
750  
750  
0.25  
0.25  
5
5
13.7  
15.2  
250  
225  
12.5  
1N4748A  
1N4749A  
1N4750A  
1N4751A  
1N4752A  
20.9  
22.8  
25.7  
28.5  
31.4  
22  
24  
27  
30  
33  
23.1  
25.2  
28.4  
31.5  
34.7  
11.5  
10.5  
9.5  
8.5  
7.5  
23  
25  
35  
40  
45  
750  
750  
750  
1000  
1000  
0.25  
0.25  
0.25  
0.25  
0.25  
5
5
5
5
5
16.7  
18.2  
20.6  
22.8  
25.1  
205  
190  
170  
150  
135  
1N4753A  
1N4754A  
1N4755A  
1N4756A  
1N4757A  
34.2  
37.1  
40.9  
44.7  
48.5  
36  
39  
43  
47  
51  
37.8  
41.0  
45.2  
49.4  
53.6  
7
6.5  
6
5.5  
5
50  
60  
70  
80  
95  
1000  
1000  
1500  
1500  
1500  
0.25  
0.25  
0.25  
0.25  
0.25  
5
5
5
5
5
27.4  
29.7  
32.7  
35.8  
38.8  
125  
115  
110  
95  
90  
1N4758A  
1N4759A  
1N4760A  
1N4761A  
1N4762A  
53.2  
58.9  
64.6  
71.3  
77.9  
56  
62  
68  
75  
82  
58.8  
65.1  
71.4  
78.8  
86.1  
4.5  
4
3.7  
3.3  
3
110  
125  
150  
175  
200  
2000  
2000  
2000  
2000  
3000  
0.25  
0.25  
0.25  
0.25  
0.25  
5
5
5
5
5
42.6  
47.1  
51.7  
56  
80  
70  
65  
60  
55  
62.2  
1N4763A  
86.5  
91  
95.6  
2.8  
250  
3000  
0.25  
5
69.2  
50  
TOLERANCE AND TYPE NUMBER DESIGNATION  
7. The JEDEC type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.  
SPECIALS AVAILABLE INCLUDE:  
8. Nominal zener voltages between the voltages shown and tighter voltage tolerances. For detailed information on price, availability, and  
delivery, contact your nearest Tak Cheong representative.  
ZENER VOLTAGE (V ) MEASUREMENT  
Z
9. Tak Cheong Electronics guarantees the zener voltage when measured at 90 seconds while maintaining the lead temperature (T ) at  
L
± 1°C, 3/8" from the diode body.  
30°C  
ZENER IMPEDANCE (Z ) DERIVATION  
Z
10.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 or I ) is superimposed on I or I .  
ZT  
ZK  
ZT  
ZK  
SURGE CURRENT (I ) NON-REPETITIVE  
R
11. 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 , per JEDEC registration; however, actual device capability  
ZT  
is as described in Figure 5 of the General Data DO-41 Glass.  
http://www.takcheong.com  
3
1N4728A Series  
1.25  
L = LEAD LENGTH  
TO HEAT SINK  
L = 1"  
L = 1/8"  
1
L = 3/8"  
0.75  
0.5  
0.25  
120  
T , LEAD TEMPERATURE (°C)  
0
60  
80  
160  
20  
40  
100  
140  
180  
200  
L
Figure 1. Power Temperature Derating Curve  
http://www.takcheong.com  
4
1N4728A Series  
a. Range for Units to 12 Volts  
b. Range for Units to 12 to 100 Volts  
100  
+12  
+10  
+8  
+6  
+4  
+2  
0
70  
50  
30  
20  
RANGE  
V
@ I  
Z ZT  
10  
7
5
V
@ I  
ZT  
Z
RANGE  
3
2
-2  
1
-4  
10  
11  
12  
10  
20  
30  
V , ZENER VOLTAGE (VOLTS)  
Z
50  
70  
100  
6
4
7
8
9
3
2
5
V
, ZENER VOLTAGE (VOLTS)  
Z
Figure 2. Temperature Coefficients  
(-55 °C to +150 °C temperature range; 90% of the units are in the ranges indicated.)  
+6  
175  
150  
V
@ I  
Z
= 25 °C  
Z
+4  
+2  
T
A
125  
100  
20 mA  
75  
50  
0
0.01 mA  
1 mA  
-2  
NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS  
NOTE: CHANGES IN ZENER CURRENT DO NOT  
NOTE: EFFECT TEMPERATURE COEFFICIENTS  
25  
0
-4  
4
7
8
3
0
0.1  
0.2  
0.3  
0.4  
0.5  
0.60.7  
0.8  
0.9  
1
6
5
V
, ZENER VOLTAGE (VOLTS)  
Z
L, LEAD LENGTH TO HEAT SINK (INCHES)  
Figure 3. Typical Thermal Resistance  
versus Lead Length  
Figure 4. Effect of Zener Current  
100  
70  
50  
RECT ANGULAR  
WAVEFORM  
11 V - 100 V NONREPETITIVE  
3.3 V - 10 V NONREPETITIVE  
T
= 25°C PRIOR TO  
J
30  
20  
5% DUTY CYCLE  
INITIAL PULSE  
10  
7
10% DUTY CYCLE  
20% DUTY CYCLE  
5
3
2
1
0.01  
0.02  
0.05  
0.1  
0.2  
0.5  
1
2
5
10  
20  
50  
100  
200  
500  
1000  
PW, PULSE WIDTH (ms)  
This graph represents 90 percentile data points.  
For worst case design characteristics, multiply surge power by 2/3.  
Figure 5. Maximum Surge Power  
http://www.takcheong.com  
5
1N4728A Series  
1000  
500  
1000  
700  
500  
T
i
= 25 °C  
(rms) = 0.1 I (dc)  
T
i
= 25 °C  
(rms) = 0.1 I (dc)  
J
Z
J
V
= 2.7 V  
Z
Z
Z
Z
f = 60 Hz  
f = 60 Hz  
I
= 1 mA  
Z
200  
200  
100  
47 V  
27 V  
100  
50  
5 mA  
70  
50  
20 mA  
20  
10  
20  
10  
7
5
6.2 V  
5
2
1
2
1
0.1  
0.2  
0.5  
1
2
5
10  
20  
50 100  
1
2
3
5
7
10  
V , ZENER VOLTAGE (V)  
Z
20  
30  
50 70 100  
I
, ZENER CURRENT (mA)  
Z
Figure 6. Effect of Zener Current  
on Zener Impedance  
Figure 7. Effect of Zener Voltage  
on Zener Impedance  
10000  
7000  
5000  
400  
300  
200  
100  
50  
TYPICAL LEAKAGE CURRENT  
AT 80% OF NOMINAL  
2000  
1000  
0 V BIAS  
1 V BIAS  
BREAKDOWN VOLTAGE  
700  
500  
200  
20  
100  
70  
50  
10  
8
50% OF BREAKDOWN BIAS  
20  
10  
4
1
2
5
10  
20  
50  
100  
7
5
V
, NOMINAL V (VOLTS)  
Z
Z
Figure 9. Typical Capacitance versus VZ  
2
1
0.7  
0.5  
1000  
500  
MINIMUM  
MAXIMUM  
+125 °C  
0.2  
200  
100  
50  
0.1  
0.07  
0.05  
0.02  
0.01  
0.007  
0.005  
20  
10  
75°C  
+25°C  
25°C  
0°C  
5
150°C  
0.002  
0.001  
2
1
0.4  
0.5  
0.6  
0.7  
V , FORWARD VOLTAGE (VOLTS)  
F
0.8  
0.9  
1
1.1  
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
V
, NOMINAL ZENER VOLTAGE (VOLTS)  
Z
Figure 8. Typical Leakage Current  
Figure 10. Typical Forward Characteristics  
http://www.takcheong.com  
6
1N4728A Series  
APPLICATION NOTE  
Since the actual voltage available from a given zener  
∆T is the increase in junction temperature above the lead  
JL  
diode is temperature dependent, it is necessary to determine  
junction temperature under any set of operating conditions  
in order to calculate its value. The following procedure is  
recommended:  
temperature and may be found as follows:  
∆TJL = θJLPD.  
θ
may be determined from Figure 3 for dc power  
JL  
conditions. For worst-case design, using expected limits of  
I , limits of P and the extremes of T (∆T ) may be  
Lead Temperature, T , should be determined from:  
L
Z
D
J
J
TL = θLAPD + TA.  
estimated. Changes in voltage, V , can then be found from:  
Z
θ
is the lead-to-ambient thermal resistance (°C/W) and P  
D
LA  
∆V = θVZ ∆TJ.  
is the power dissipation. The value for θ will vary and  
LA  
θ
, the zener voltage temperature coefficient, is found  
VZ  
depends on the device mounting method. θ is generally 30  
LA  
from Figure 2.  
to 40°C/W for the various clips and tie points in common use  
and for printed circuit board wiring.  
Under high power-pulse operation, the zener voltage will  
vary with time and may also be affected significantly by the  
zener resistance. For best regulation, keep current  
excursions as low as possible.  
Surge limitations are given in Figure 5. They are lower  
than would be expected by considering only junction  
temperature, as current crowding effects cause temperatures  
to be extremely high in small spots, resulting in device  
degradation should the limits of Figure 5 be exceeded.  
The temperature of the lead can also be measured using a  
thermocouple placed on the lead as close as possible to the  
tie point. The thermal mass connected to the tie point is  
normally large enough so that it will not significantly  
respond to heat surges generated in the diode as a result of  
pulsed operation once steady-state conditions are achieved.  
Using the measured value of T , the junction temperature  
L
may be determined by:  
TJ = TL + ∆TJL  
.
http://www.takcheong.com  
7

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