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BZX55C18RA2 [TAK_CHEONG]

Zener Diode, 18V V(Z), 6.41%, 0.5W, Silicon, Unidirectional, DO-35, HERMETIC SEALED, GLASS, DO-204AH, 2 PIN;
BZX55C18RA2
型号： BZX55C18RA2
厂家： Tak Cheong Electronics (Holdings) Co.,Ltd    Tak Cheong Electronics (Holdings) Co.,Ltd
描述：

Zener Diode, 18V V(Z), 6.41%, 0.5W, Silicon, Unidirectional, DO-35, HERMETIC SEALED, GLASS, DO-204AH, 2 PIN
文件： 总9页 (文件大小：569K)
中文：  中文翻译
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®
Licensed by ON Semiconductor,  
A trademark of semiconductor  
Components Industries, LLC for  
Zener Technology and Products.  
TAK CHEONG  
500 mW DO-35 Hermetically  
Sealed Glass Zener Voltage  
Regulators  
Maximum Ratings (Note 1)  
Rating  
Symbol  
Value  
Units  
Maximum Steady State Power Dissipation  
mW  
PD  
500  
@TL≤75℃, Lead Length = 3/8”  
4.0  
mW/℃  
Derate Above 75℃  
Operating and Storage  
Temperature Range  
AXIAL LEAD  
DO35  
TJ, Tstg  
-65 to +200  
°C  
Note 1: Some part number series have lower JEDEC registered ratings.  
Specification Features:  
ƒ
ƒ
ƒ
ƒ
ƒ
Zener Voltage Range = 2.4V to 91V  
ESD Rating of Clas 3 (>6 KV) per Human Body Model  
DO-35 Package (DO-204AH)  
Double Slug Type Construction  
Metallurgical Bonded Construction  
Cathode  
Anode  
Specification Features:  
Case  
Finish  
: Double slug type, hermetically sealed glass  
: All external surfaces are corrosion resistant and leads are readily solderable  
Polarity : Cathode indicated by polarity band  
Mounting: Any  
L
55C  
xxx  
Maximum Lead Temperature for Soldering Purposes  
230℃, 1/16” from the case for 10 seconds  
L
= Logo  
79Cxxx  
= BZX79Cxxx Device Code  
Ordering Information  
Device  
BZX55Cxxx  
Package  
Axial Lead  
Axial Lead  
Axial Lead  
Lead Form  
Lead Form  
Axial Lead  
Axial Lead  
Axial Lead  
Axial Lead  
Quantity  
3000 Units / Box  
BZX55CxxxRL  
5000 Units / Tape & Reel  
5000 Units / Tape & Reel  
3000 Units / Radial Tape & Reel  
3000 Units / Radial Tape & Reel  
5000 Units / Tape & Ammo  
5000 Units / Tape & Ammo  
3000 Units / Radial Tape & Ammo  
3000 Units / Radial Tape & Ammo  
BZX55CxxxRL2*  
BZX55CxxxRR1 !  
BZX55CxxxRR2 i  
BZX55CxxxTA  
BZX55CxxxTA2*  
BZX55CxxxRA1 !  
BZX55CxxxRA2 i  
* The “2” suffix refer to 26mm tape spacing.  
!
i
“1”: Polarity band up with cathode lead off first.  
“2”: Polarity band down with cathode lead off first.  
Devices listed in bold italic are Tak Cheong Preferred  
devices. Preferred devices are recommended choices  
for future use and best overall value.  
December 2005 / B  
http://takcheong.com  
1
BZX55C2V4 through BZX55C91 Series  
ELECTRICAL CHARACTERISTICS (TA  
= 25ºC unless  
otherwise noted. VF = 1.3 V Max @ IF = 100mA for all types)  
Symbol  
VZ  
Parameter  
Reverse Zener Voltage @ IZT  
Reverse Zener Current  
IZT  
ZZT  
IZM  
Maximum Zener Impedance @ IZT  
Maximum DC Zener Current  
Reverse Leakage Current @ VR  
Reverse Voltage  
IR  
VR  
IF  
Forward Current  
VF  
Forward Voltage @ IF  
ELECTRICAL CHARACTERISTICS (TA = 25ºC unless otherwise noted, VF = 1.3 V Max @ IF = 100mA for all types)  
Max Reverse  
Leakage Current  
Max Zener  
Impedance  
VZT @ IZT  
(Volts)  
IR at VR  
(Note 4)  
IZM  
Tamb  
Tamb  
ZZT @ IZT  
IZT  
25°C  
(µA)  
125°C  
VR  
(Note 3.)  
(Note 2.)  
Device  
Marking  
Min  
Max  
Device  
(Ω)  
(mA)  
(µA)  
(Volts)  
(mA)  
BZX55C2V4  
BZX55C2V7  
BZX55C3V0  
BZX55C3V3  
BZX55C3V6  
BZX55C3V9  
BZX55C4V3  
BZX55C4V7  
BZX55C5V1  
BZX55C5V6  
BZX55C6V2  
BZX55C6V8  
BZX55C7V5  
BZX55C8V2  
BZX55C9V1  
BZX55C10  
55C2V4  
55C2V7  
55C3V0  
55C3V3  
55C3V6  
55C3V9  
55C4V3  
55C4V7  
55C5V1  
55C5V6  
55C6V2  
55C6V8  
55C7V5  
55C8V2  
55C9V1  
55C10  
2.28  
2.5  
2.8  
3.1  
3.4  
3.7  
4
2.56  
2.9  
3.2  
3.5  
3.8  
4.1  
4.6  
5
85  
85  
85  
85  
85  
85  
75  
60  
35  
25  
10  
8
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
50  
10  
4
100  
50  
40  
40  
40  
40  
20  
10  
c
1
1
155  
135  
125  
115  
105  
95  
1
2
1
2
1
2
1
1
1
90  
4.4  
4.8  
5.2  
5.8  
6.4  
7
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  
1
85  
5.4  
6
1
80  
2
1
70  
6.6  
7.2  
7.9  
8.7  
9.6  
10.6  
11.6  
12.7  
14.1  
15.6  
2
2
64  
2
3
58  
7
2
5
53  
7.7  
8.5  
9.4  
10.4  
11.4  
12.4  
13.8  
7
2
6
47  
10  
15  
20  
20  
26  
30  
2
7
43  
2
7.5  
8.5  
9
40  
BZX55C11  
55C11  
2
36  
BZX55C12  
55C12  
2
32  
BZX55C13  
55C13  
2
10  
11  
29  
BZX55C15  
55C15  
2
27  
2. TOLERANCE AND VOLTAGE DESIGNATION (VZt)  
Tolerance designation – the type numbers listed have zener voltage min/max limits as shown. Device tolerance of ±2% are  
Indicated by a “B” instead of a “C”. Zener voltage is measured with the device junction thermal equilibrium at the temperature  
of 30°C ±1°C and 3/8” lead length.  
3. MAXIMUM ZENER CURRENT RATINGS (IZM  
)
This data was calculated using nominal voltages. The maximum current handling capability on a worst case basis is limited  
by the actual zener voltage at the operation point and the power derating curve.  
4. ZENER IMPEDANCE (ZZ) DERIVATION  
ZZT and ZZK are measured by dividing the AC voltage drop across the device by the AC current applied. The specified limits  
are for IZ(AC) = 0.1 IZ(DC) with AC frequency = 60Hz.  
http://www.takcheong.com  
2
BZX55C2V4 through BZX55C91 Series  
ELECTRICAL CHARACTERISTICS (TA = 25ºC unless otherwise noted, VF = 1.3 V Max @ IF = 100mA for all types)  
Max Reverse  
Leakage Current  
Max Zener  
Impedance  
VZT @ IZT  
(Volts)  
IR at VR  
(Note 7)  
IZM  
Tamb  
Tamb  
ZZT @ IZT  
IZT  
25°C  
(µA)  
125°C  
VR  
(Note 5.)  
(Note 6.)  
Device  
Marking  
Min  
Max  
Device  
(Ω)  
(mA)  
(µA)  
(Volts)  
(mA)  
BZX55C16  
BZX55C18  
BZX55C20  
BZX55C22  
BZX55C24  
BZX55C27  
BZX55C30  
BZX55C33  
BZX55C36  
BZX55C39  
BZX55C43  
BZX55C47  
BZX55C51  
BZX55C56  
BZX55C62  
BZX55C68  
BZX55C75  
BZX55C82  
BZX55C91  
55C16  
55C18  
55C20  
55C22  
55C24  
55C27  
55C30  
55C33  
55C36  
55C39  
55C43  
55C47  
55C51  
55C56  
55C62  
55C68  
55C75  
55C82  
55C91  
15.3  
16.8  
18.8  
20.8  
22.8  
25.1  
28  
17.1  
19.1  
21.1  
23.3  
25.6  
28.9  
32  
40  
50  
5
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  
2
2
12  
14  
15  
17  
18  
20  
22  
24  
27  
28  
32  
35  
38  
42  
47  
51  
56  
62  
69  
24  
21  
20  
18  
16  
14  
13  
12  
11  
10  
9.2  
8.5  
7.8  
7
55  
5
2
55  
5
2
80  
5
2
80  
5
2
80  
5
2
31  
35  
80  
5
2
34  
38  
80  
5
2
37  
41  
90  
2.5  
2.5  
2.5  
2.5  
2.5  
2.5  
2.5  
2.5  
2.5  
1
5
40  
46  
90  
5
44  
50  
110  
125  
135  
150  
160  
170  
200  
250  
5
48  
54  
10  
10  
10  
10  
10  
10  
10  
52  
60  
58  
66  
6.4  
5.9  
5.3  
4.8  
4.3  
64  
72  
70  
80  
77  
87  
85  
96  
5. TOLERANCE AND VOLTAGE DESIGNATION (VZt)  
Tolerance designation – the type numbers listed have zener voltage min/max limits as shown. Device tolerance of ±2% are  
Indicated by a “B” instead of a “C”. Zener voltage is measured with the device junction thermal equilibrium at the temperature  
of 30°C ±1°C and 3/8” lead length.  
6. MAXIMUM ZENER CURRENT RATINGS (IZM  
)
This data was calculated using nominal voltages. The maximum current handling capability on a worst case basis is limited  
by the actual zener voltage at the operation point and the power derating curve.  
7. ZENER IMPEDANCE (ZZ) DERIVATION  
ZZT and ZZK are measured by dividing the AC voltage drop across the device by the AC current applied. The specified limits  
are for IZ(AC) = 0.1 IZ(DC) with AC frequency = 60Hz.  
http://www.takcheong.com  
3
BZX55C2V4 through BZX55C91 Series  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
HEAT  
SINKS  
3/8"  
3/8"  
0
20  
40  
60  
80  
100  
120  
140  
160  
180  
200  
T
, LEAD TEMPERATURE (°C)  
L
Figure 1. Steady State Power Derating  
http://www.takcheong.com  
4
BZX55C2V4 through BZX55C91 Series  
APPLICATION NOTE - ZENER VOLTAGE  
500  
400  
Since the actual voltage available from a given zener  
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:  
L
L
300  
200  
100  
Lead Temperature, TL, should be determined from:  
2.4-60 V  
TL = θLAPD + TA.  
θLA is the lead-to-ambient thermal resistance (°C/W) and PD  
is the power dissipation. The value for θLA will vary and  
depends on the device mounting method. θLA is generally 30  
to 40°C/W for the various clips and tie points in common use  
and for printed circuit board wiring.  
62-200 V  
0
0
0.2  
0.4  
0.6  
0.8  
1
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 TL, the junction temperature  
may be determined by:  
L , LEAD LENGTH TO HEAT SINK (INCH)  
Figure 2. Typical Thermal Resistance  
1000  
7000  
5000  
TYPICAL LEAKAGE CURRENT  
AT 80% OF NOMINAL  
2000  
1000  
BREAKDOWN VOLTAGE  
TJ = TL + ∆TJL  
.
700  
500  
∆TJL is the increase in junction temperature above the lead  
temperature and may be found from Figure 2 for dc power:  
200  
100  
70  
∆TJL = θJLPD.  
50  
For worst-case design, using expected limits of IZ, limits  
of PD and the extremes of TJ(∆TJ) may be estimated.  
Changes in voltage, VZ, can then be found from:  
20  
10  
∆V = θVZTJ.  
7
5
θVZ, the zener voltage temperature coefficient, is found  
from Figures 4 and 5.  
2
1
0.7  
0.5  
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.  
+125°C  
0.2  
Surge limitations are given in Figure 7. 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 7 be exceeded.  
0.1  
0.07  
0.05  
0.02  
0.01  
0.007  
0.005  
+25°C  
0.002  
0.001  
14  
3
4
5
6
7
8
9
10  
11  
12  
13  
15  
V
, NOMINAL ZENER VOLTAGE (VOLTS)  
Z
Figure 3. Typical Leakage Current  
http://www.takcheong.com  
5
BZX55C2V4 through BZX55C91 Series  
TEMPERATURE COEFFICIENTS  
(-55°C to +150°C temperature range; 90% of the units are in the ranges indicated.)  
+12  
+10  
100  
70  
50  
+8  
+6  
+4  
+2  
30  
20  
VZ @ IZ (NOTE 2)  
RANGE  
10  
7
5
RANGE  
VZ @ IZT  
0
-2  
-4  
3
2
(NOTE 2)  
1
2
7
10  
4
5
6
8
9
11  
10  
20  
30  
V , ZENER VOLTAGE (VOLTS)  
Z
50  
70  
100  
3
12  
V
, ZENER VOLTAGE (VOLTS)  
Z
Figure 4a. Range for Units to 12 Volts  
Figure 4b. Range for Units 12 to 100 Volts  
200  
180  
160  
+6  
+4  
VZ @ IZ  
T = 25 °C  
A
+2  
0
20mA  
140  
0.01mA  
1mA  
VZ @ IZT  
120  
100  
-2  
-4  
(NOTE 2)  
NOTE: BELOW 3 VOLTS AND ABOVE 8 VOL TS  
NOTE: CHANGES IN ZENER CURRENT DO NOT  
NOTE: AFFECT TEMPERATURE COEFFICIENTS  
6
8
5
120  
130  
140  
150  
160  
170  
180  
190  
200  
3
4
7
V
, ZENER VOLTAGE (VOLTS)  
V
, ZENER VOLTAGE (VOLTS)  
Z
Z
Figure 4c. Range for Units 120 to 200 Volts  
Figure 5. Effect of Zener Current  
1000  
100  
70  
TA = 25°C  
500  
T= 25 °C  
50  
0V BIAS  
0 BIAS  
200  
100  
50  
30  
20  
1V BIAS  
1 VOLT BIAS  
10  
20  
7
5
50% OF V BIAS  
10  
5
50% OF  
V
BIAS  
Z
3
2
2
1
1
1
2
5
10  
20  
50  
100  
120  
140  
160  
180  
190  
200  
220  
V
, ZENER VOLTAGE (VOLTS)  
V , ZENER VOLTAGE (VOLTS)  
Z
Z
Figure 6a. Typical Capacitance 2.4-100 Volts  
Figure 6b. Typical Capacitance 120-200 Volts  
http://www.takcheong.com  
6
BZX55C2V4 through BZX55C91 Series  
100  
RECT ANGULAR  
WAVEFORM  
70  
50  
11V-91V NONREPETITIVE  
1.8V-10V NONREPETITIVE  
T
= 25°C PRIOR TO  
J
30  
20  
5% DUTY CYCLE  
INITIAL PULSE  
10  
10% DUTY CYCLE  
20% DUTY CYCLE  
7
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)  
Figure 7a. Maximum Surge Power 1.8-91 Volts  
1000  
500  
1000  
700  
500  
T
= 25°C  
(rms) = 0.1 Iz(dc)  
J
VZ = 2.7V  
i
Z
RECT ANGULAR  
WAVEFORM, TJ = 25°C  
f = 60 Hz  
300  
200  
200  
47V  
27V  
100  
100  
70  
50  
100-200 VOLTS NONREPETITIVE  
50  
20  
30  
20  
6.2V  
10  
7
10  
5
5
3
2
2
1
1
0.01  
0.1  
1
10  
100  
1000  
0.1  
0.2  
0.5  
1
2
5
10  
20  
50  
100  
PW, PULSE WIDTH (ms)  
I
, ZENER CURRENT (mA)  
Z
Figure 7b. Maximum Surge Power DO-35  
100-200Volts  
Figure 8. Effect of Zener Current on  
Zener Impedance  
1000  
700  
500  
1000  
TJ = 25°C  
iZ (rms) = 0.1 IZ (dc)  
MAXIMUM  
MINIMUM  
500  
200  
f = 60Hz  
IZ = 1mA  
5mA  
200  
100  
70  
50  
100  
50  
20mA  
20  
20  
10  
5
75°C  
10  
7
5
25°C  
0°C  
150°C  
2
1
2
1
1
2
3
5
7
10  
20  
30  
50 70 100  
0.4  
0.5  
0.6  
0.7  
V , FOR WARD VOLTAGE (VOLTS)  
F
0.8  
0.9  
1
1.1  
V
, ZENER VOLTAGE (VOLTS)  
Z
Figure 9. Effect of Zener Voltage on Zener Impedance  
Figure 10. Typical Forward Characteristics  
http://www.takcheong.com  
7
BZX55C2V4 through BZX55C91 Series  
20  
10  
T
= 25°C  
A
1
0.1  
0.01  
6
1
2
5
7
8
9
10  
11  
12  
13  
14  
15  
16  
3
4
V
, ZENER VOLTAGE (VOLTS)  
Z
Figure 1 1. Zener Voltage versus Zener Current - V = 1 thru 16 Volts  
Z
10  
T
= 25°C  
A
1
0.1  
0.01  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
V
, ZENER VOLTAGE (VOLTS)  
Z
Figure 12. Zener Voltage versus Zener Current - V = 15 thru 30 Volts  
Z
http://www.takcheong.com  
8
BZX55C2V4 through BZX55C91 Series  
10  
T
= 25°  
A
1
0.1  
0.01  
30  
35  
40  
45  
50  
55  
60  
65  
70  
75  
80  
85  
90  
95  
100  
105  
V
, ZENER VOLTAGE (VOLTS)  
Z
Figure 13. Zener Voltage versus Zener Current - V = 30 thru 105 Volts  
Z
10  
1
0.1  
0.01  
110  
120  
130  
140  
150  
160  
170  
180  
190  
200  
210  
220  
230  
240  
250  
260  
V
, ZENER VOLTAGE (VOLTS)  
Z
Figure 14. Zener Voltage versus Zener Current - V = 110 thru 220 Volts  
Z
http://www.takcheong.com  
9

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SI9130LG-T1-E3

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SI9130_11

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SI9137

 Multi-Output, Sequence Selectable Power-Supply Controller for Mobile Applications

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SI9137DB

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SI9137LG

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SI9122E

 500-kHz Half-Bridge DC/DC Controller with Integrated Secondary Synchronous Rectification Drivers

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VISHAY
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