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參數(shù)資料
| 型號(hào)： | NTE4978 |
| 廠商： | NTE Electronics, Inc. |
| 英文描述： | Surge Clamping, Transient Overvoltage Suppressor Unidirectional |
| 中文描述： | 浪涌夾緊，單向暫態(tài)過(guò)電壓抑制器 |
| 文件頁(yè)數(shù)： | 2/2頁(yè) |
| 文件大?。?/td> | 26K |
| 代理商： | NTE4978 |
Electrical Characteristics (Cont’d):
Clamping Factor: 1.33 @ full rated power
1.20 @ 50% rated power
The clamping factor is defined as: The ratio of the actual V
C
(Clamping voltage) to the actual BV
(Breakdown Voltage) as measured on a specific device.
Maximum Ratings
NTE Type
Number
Diagram
Number
Maximum Reverse
Stand Off Voltage
(Volts)
V
R
Breakdown Voltage @ I
T
(Volts)
V
BR
Typ
15.00
16.00
18.00
20.00
24.00
27.05
30.00
33.00
36.00
39.00
43.00
47.00
51.05
56.00
62.00
68.00
75.00
82.00
91.00
100.00
110.00
120.00
130.00
150.00
160.00
170.00
180.00
220.00
250.00
200.00
300.00
320.00
350.00
400.00
440.00
Clamping Voltage
@ I
pp
(1msec)
(Volts)
V
C
Reverse Leakage
Current @ V
R
(
μ
A)
I
R
Peak Pulse
Current
(Amps)
I
pp
Temperature
Coefficient
of BV%/
°
C
Min
14.30
15.20
17.10
19.00
22.80
25.70
28.50
31.40
34.20
37.10
40.90
44.70
48.50
53.20
58.90
64.60
71.30
77.90
86.50
95.00
105.00
114.00
124.00
135.00
152.00
162.00
171.00
209.00
237.00
190.00
285.00
304.00
333.00
380.00
418.00
Max
15.80
16.80
18.90
21.00
25.20
28.40
31.50
34.70
37.80
41.00
45.20
49.40
53.60
58.80
65.10
71.40
78.80
86.10
95.50
105.00
116.00
126.00
137.00
165.00
168.00
179.00
189.00
231.00
263.00
210.00
315.00
336.00
368.00
420.00
462.00
I
T
mA
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
1.0
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
4920
4922
4926
4928
4932
4934
4936
4938
4940
4942
4944
4946
4950
4952
4954
4958
4960
4962
4964
4966
4968
4970
4972
4974
4976
4978
4980
4982
4984
4988
4990
4992
4994
4996
4998
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
183
12.80
13.60
15.30
17.10
20.50
23.10
25.60
28.20
30.80
33.30
36.80
40.20
43.60
47.80
53.00
58.10
64.10
70.10
77.80
85.50
94.00
102.00
111.00
121.00
136.00
145.00
154.00
185.00
214.00
171.00
256.00
273.00
300.00
342.00
376.00
21.2
22.5
25.2
27.7
33.2
37.5
41.4
45.7
49.9
53.9
59.3
64.8
70.1
77.0
85.0
92.0
103.0
113.0
125.0
137.0
152.0
165.0
179.0
215.0
219.0
234.0
246.0
328.0
344.0
274.0
414.0
438.0
482.0
548.0
603.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
71.00
67.00
59.50
54.00
45.00
40.00
36.00
33.00
30.00
28.00
25.30
23.20
21.40
19.50
17.70
16.30
14.60
13.30
12.00
11.00
9.90
9.10
8.40
7.00
6.80
6.40
6.10
4.60
5.00
5.50
3.58
4.50
3.08
2.78
3.50
0.084
0.086
0.088
0.090
0.094
0.096
0.097
0.098
0.099
0.100
0.101
0.101
0.102
0.103
0.104
0.104
0.105
0.105
0.106
0.106
0.107
0.107
0.107
0.108
0.108
0.108
0.108
0.109
0.109
0.108
0.110
0.110
0.110
0.110
0.110
Note 1. Normal selection of a zener transient over voltage suppressor is by rated stand
–
off voltage
(V
WM
) and should be equal or greater than DC or continuous peak operating voltage.
Color Band Denotes Cathode
1.100
(27.94)
Min
.375
(9.52)
Max
.205 (5.21)
Dia Max
.042 (1.07) Dia Max
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