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What is 1N4491?

This electronic component, produced by the manufacturer "Digitron Semiconductors", performs the same function as "1.5 WATT GLASS ZENER DIODE".


1N4491 Datasheet PDF - Digitron Semiconductors

Part Number 1N4491
Description 1.5 WATT GLASS ZENER DIODE
Manufacturers Digitron Semiconductors 
Logo Digitron Semiconductors Logo 


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1N4460-1N4496,
1N6485-1N6491
High-reliability discrete products
and engineering services since 1977
1.5 WATT GLASS ZENER DIODE
FEATURES
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.
MAXIMUM RATINGS
Operating Temperature:
Storage Temperature:
Power Dissipation:
Thermal Resistance
Forward Voltage
-65 to +175°C
-65 to +175°C
1.5 Watts @ TA = 25°C
42°C/W at 3/8 inch from body
1.00 V at 200 mA and 1.5 V at 1.0 A
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified)
Type
Nominal
Zener
Voltage
VZ
Test
Current
IZT
Maximum
Dynamic
Impedance
ZZT @ IZT
Maximum
Knee
Impedance
ZZK @ IZK
Maximum Reverse
Current
IR @ VR
1N6485
1N6486
1N6487
1N6488
1N6489
1N6490
1N6491
1N4460
1N4461
1N4462
1N4463
1N4464
1N4465
1N4466
1N4467
1N4468
1N4469
1N4470
1N4471
1N4472
1N4473
1N4474
1N4475
1N4476
1N4477
Volts
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10.0
11.0
12.0
13.0
15.0
16.0
18.0
20.0
22.0
24.0
27.0
30.0
33.0
mA
76.0
69.0
64.0
58.0
53.0
49.0
45.0
40.0
37.0
34.0
31.0
28.0
25.0
23.0
21.0
19.0
17.0
15.5
14.0
12.5
11.5
10.5
9.5
8.5
7.5
Ohms
10
10
9
9
8
7
5
4
2.5
2.5
3
4
5
6
7
8
9
10
11
12
14
16
18
20
25
Ohms
400
400
400
400
500
500
600
200
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
mA
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
.50
.50
.50
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
.25
µA
50
50
35
5.0
4.0
1.0
.5
10.0
5.0
1.0
.50
.30
.30
.30
.20
.05
.05
.05
.05
.05
.05
.05
.05
.05
.05
Volts
1.0
1.0
1.0
1.0
1.0
1.0
2.0
3.72
4.08
4.50
4.92
5.46
8.00
8.80
9.60
10.40
12.00
12.80
14.40
16.00
17.60
19.20
21.60
24.00
26.40
Maximum
Continuous
Current
IZM
mA
433
397
366
366
304
280
255
230
210
191
174
157
143
130
119
110
95
90
79
71
65
60
53
48
43
Surge
Current
8.3 ms sq wave
IZSM
Amps
4.2
3.9
3.6
3.6
3.0
2.7
2.5
2.3
2.1
1.9
1.7
1.6
1.4
1.3
1.2
1.1
.95
.80
.79
.71
.65
.60
.53
.48
.43
Rev. 20120705


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for 1N4491 electronic component.


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