NTE4951 NTE Electronics, Inc., NTE4951 Datasheet - Page 2

• Manufacturer Part Number: NTE4951
• Description: Overvoltage Suppressor, Transient
• Manufacturer: NTE Electronics, Inc.
• Type: Networkr

Specifications of NTE4951

• Current, Surge: 21.4 A
• Dimensions: 9.52mmL×5.21mmDia.
• Mounting Type: Thru-Hole
• Package Type: Axial
• Primary Type: Transient Voltage Surge Suppressor
• Termination: Solder
• Voltage, Clamping: 70.1 V
• Lead Free Status / Rohs Status: RoHS Compliant part
• For Use With: Data/Comm, Industrial Equipment

Electrical Characteristics (Cont’d):
Clamping Factor: 1.33 @ full rated power
The clamping factor is defined as: The ratio of the actual V
(Breakdown Voltage) as measured on a specific device.
Note 2. Normal selection of a zener transient over voltage suppressor is by rated stand−off voltage
NTE Type
Number
4919
4921
4923
4927
4929
4933
4935
4937
4939
4941
4943
4945
4947
4951
4953
4955
4959
4961
4963
4965
4967
4969
4971
4973
4975
4977
4979
4981
4983
4985
4989
4991
4993
4995
4997
4999
Diagram
Number
(V
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
183
WM
.042 (1.07) Dia Max
) and should be equal or greater than DC or continuous peak operating voltage.
Maximum Reverse
Stand Off Voltage
102.00
128.00
136.00
145.00
154.00
185.00
214.00
171.00
256.00
273.00
300.00
342.00
376.00
111.00
(Volts)
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
11.10
1.20 @ 50% rated power
V
R
(27.94)
105.00
124.00
143.00
152.00
162.00
171.00
209.00
237.00
190.00
285.00
304.00
333.00
380.00
418.00
114.00
1.100
12.40
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
Min
Min
Breakdown Voltage @ I
100.00
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
110.00
13.00
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
Typ
(Volts)
V
BR
105.00
126.00
137.00
158.00
168.00
179.00
189.00
231.00
263.00
210.00
315.00
336.00
368.00
420.00
462.00
116.00
13.70
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
Max
T
I
T
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
1.0
mA
(9.52)
.375
Max
Clamping Voltage
@ I
103.0
125.0
137.0
152.0
165.0
179.0
207.0
219.0
234.0
246.0
328.0
344.0
274.0
414.0
438.0
482.0
548.0
603.0
113.0
pp
(Volts)
18.2
21.1
22.5
25.2
27.7
33.2
37.5
36.0
45.7
49.9
53.9
59.3
64.8
70.1
77.0
85.0
92.0
V
(1msec)
C
C
(Clamping Voltage) to the actual BV
Maximum Ratings
Reverse Leakage
Current @ V
(µA)
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
4.0
4.0
5.0
I
R
R
.205 (5.21)
Dia Max
Peak Pulse
Current
(Amps)
82.00
71.00
67.00
59.50
54.00
45.00
40.00
41.40
33.00
30.00
28.00
25.30
23.30
21.40
19.50
17.70
16.30
14.60
13.30
12.00
11.00
I
9.90
9.10
8.40
7.20
6.80
6.40
6.10
4.60
5.00
5.50
3.58
4.50
3.08
2.78
3.50
pp
Temperature
Coefficient
of BV%/°C
0.081
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