# Zener Single Diode, 56 V, 1 W, DO-41 (DO-204AL), 2 Pins, 150 °C, Through Hole ![Product image](https://novapart.co/image/farnell:2824907/) **URL**: https://novapart.co/products/1N4758A/zener-single-diode-56-v-1-w-do-41-204al-2-pins-150 **SKU**: 1N4758A **Manufacturer**: ONSEMI **Category**: Semiconductors - Discretes || Diodes & Rectifiers || Zener Single Diodes **Price**: €0.0210 **Stock**: 10+ **Lead Time**: 78 days (indicative) ## Description Zener Voltage Vz Typ:56V; Power Dissipation Pd:1W; Diode Case Style:DO-204AL; Zener Tolerance ±:5%; No. of Pins:2Pins; Operating Temperature Max:150°C; Product Range:-; Automotive Qualific ## Specifications | Parameter | Value | |---|---| | Svhc | No SVHC (25-Jun-2025) | | No. Of Pins | 2Pins | | Product Range | - | | Qualification | - | | Diode Mounting | Through Hole | | Diode Case Style | DO-41 (DO-204AL) | | Power Dissipation | 1W | | Zener Voltage Nom | 56V | | Operating Temperature Max | 150°C | ## Datasheet 📄 [Download PDF](https://novapart.co/datasheet/farnell:2824907/) ## **1N4728A - 1N4758A Zener Diodes** **==> picture [85 x 108] intentionally omitted <==** **----- Start of picture text -----**
Tolerance = 5%
a
DO-41 Glass case
COLOR BAND DENOTES CATHODE
**----- End of picture text -----**
## **Absolute Maximum Ratings *** Ta = 25°C unless otherwise noted |**Device**
~~Boee~~|**VZ (V) @ IZ **(Note 1)
~~Boee~~|**VZ (V) @ IZ **(Note 1)
~~Boee~~|**VZ (V) @ IZ **(Note 1)
~~Boee~~|**Test Current**
**IZ (mA)**
~~eee~~|**Max. Zener Impedance**
~~eee~~|**Max. Zener Impedance**
~~eee~~|**Max. Zener Impedance**
~~eee~~|**Leakage**
**Current**
~~eee~~|**Leakage**
**Current**
~~eee~~|**Non-Repetitive**
**Peak Reverse**
**Current**
**IZSM(mA) **(Note 2)
~~eee~~| |---|---|---|---|---|---|---|---|---|---|---| ||**Min.**
~~Boee~~|**Typ.**
~~Boee~~|**Max.**
~~Boee~~||**ZZ @ IZ**
**(****)**
~~eee~~|**ZZK @**
**IZK(****)**
~~eee~~|**IZK**
**(mA)**
~~eee~~|**IR**
**(****A)**
~~eee~~|**VR**
**(V)**
~~eee~~|| |1N4728A
1N4729A
1N4730A
1N4731A
1N4732A
~~Boee~~|3.135
3.42
3.705
4.085
4.465
~~Boee~~|3.3
3.6
3.9
4.3
4.7
~~Boee~~|3.465
3.78
4.095
4.515
4.935
~~Boee ~~|76
69
64
58
53
~~eee~~|10
10
9
9
8
~~eee~~|400
400
400
400
500
~~eee~~|1
1
1
1
1
~~eee~~|100
100
50
10
10
~~eee~~|1
1
1
1
1
~~eee~~|1380
1260
1190
1070
970
~~eee~~| |1N4733A
1N4734A
1N4735A
1N4736A
1N4737A|4.845
5.32
5.89
6.46
7.125|5.1
5.6
6.2
6.8
7.5|5.355
5.88
6.51
7.14
7.875|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
8.645
9.5
10.45
11.4|8.2
9.1
10
11
12|8.61
9.555
10.5
11.55
12.6|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
5|6
7
7.6
8.4
9.1|550
500
454
414
380| © 2009 Semiconductor Components Industries, LLC. October-2017, Rev. 8 Publication Order Number: 1N4736AT/D |**Device**|**VZ (V) @ IZ **(Note 1)|**VZ (V) @ IZ **(Note 1)|**VZ (V) @ IZ **(Note 1)|**Test Current**
**IZ (mA)**|**Max. Zener Impedance**|**Max. Zener Impedance**|**Max. Zener Impedance**|**Leakage**
**Current**|**Leakage**
**Current**|**Non-Repetitive**
**Peak Reverse**
**Current**
**IZSM(mA) **(Note 2)| |---|---|---|---|---|---|---|---|---|---|---| ||**Min.**|**Typ.**|**Max.**||**ZZ @ IZ**
**(****)**|**ZZK @**
**IZK (****)**|**IZK**
**(mA)**|**IR**
**(****A)**|**VR**
**(V)**|| |1N4743A
1N4744A
1N4745A
1N4746A
1N4747A|12.35
14.25
15.2
17.1
19|13
15
16
18
20|13.65
15.75
16.8
18.9
21|19
17
15.5
14
12.5|10
14
16
20
22|700
700
700
750
750|0.25
0.25
0.25
0.25
0.25|5
5
5
5
5|9.9
11.4
12.2
13.7
15.2|344
304
285
250
225| |1N4748A
1N4749A
1N4750A
1N4751A
1N4752A|20.9
22.8
25.65
28.5
31.35|22
24
27
30
33|23.1
25.2
28.35
31.5
34.65|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
37.05
40.85
44.65
48.45|36
39
43
47
51|37.8
40.95
45.15
49.35
53.55|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|53.2|56|58.8|4.5|110|2000|0.25|5|42.6|80| ## **Notes:** 1. Zener Voltage (VZ) The zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (TL) at 30C ± 1C and 3/8” lead length. 2. 2 Square wave Reverse Surge at 8.3 msec soak time. ## **Top Mark Information** |**Device**|**Line 1**|**Line 2**|**Line 3**|**Line 4**|**Line 5**| |---|---|---|---|---|---| |1N4728A
1N4729A
1N4730A
1N4731A
1N4732A|LOGO
LOGO
LOGO
LOGO
LOGO|47
47
47
47
47|28
29
30
31
32|A
A
A
A
A|XY
XY
XY
XY
XY| |1N4733A
1N4734A
1N4735A
1N4736A
1N4737A|LOGO
LOGO
LOGO
LOGO
LOGO|47
47
47
47
47|33
34
35
36
37|A
A
A
A
A|XY
XY
XY
XY
XY| |1N4738A
1N4739A
1N4740A
1N4741A
1N4742A|LOGO
LOGO
LOGO
LOGO
LOGO|47
47
47
47
47|38
39
40
41
42|A
A
A
A
A|XY
XY
XY
XY
XY| |1N4743A
1N4744A
1N4745A
1N4746A
1N4747A|LOGO
LOGO
LOGO
LOGO
LOGO|47
47
47
47
47|43
44
45
46
47|A
A
A
A
A|XY
XY
XY
XY
XY| |1N4748A
1N4749A
1N4750A
1N4751A
1N4752A|LOGO
LOGO
LOGO
LOGO
LOGO|47
47
47
47
47|48
49
50
51
52|A
A
A
A
A|XY
XY
XY
XY
XY| |1N4753A
1N4754A
1N4755A
1N4756A
1N4757A|LOGO
LOGO
LOGO
LOGO
LOGO|47
47
47
47
47|53
54
55
56
57|A
A
A
A
A|XY
XY
XY
XY
XY| |1N4758A|LOGO|47|58|A|XY| www.onsemi.com 2 ## **Top Mark Information** (Continued) - 1[st] line: F - ON Semiconductor Logo - 2[nd] line: Device Name - 3[rd] to 4[th] characters of device name for 1Nxx series or 4[[th]] to 6[[th]] characters for BZXyy series **==> picture [420 x 64] intentionally omitted <==** **----- Start of picture text -----**
[47] 2 line: Device Name - 3 to 4 characters of device name for 1Nxx series
or 4 [[th]] to 6 [[th]] characters for BZXyy series
36 3 [rd] line: Device Name - 5 [th] to 6 [th] characters of device name for 1Nxx series
A or Voltage rating for BZXyy series
| 4 [[th]] line: Device Name - 7 [[th]] to 8 [[th]] characters of device name for 1Nxx series
or Large Die identification only for BZXyy series
XY
**----- End of picture text -----**
- 4[[th]] line: Device Name - 7[[th]] to 8[[th]] characters of device name for 1Nxx series or Large Die identification only for BZXyy series - 5[th] line: Date Code - Two Digit - Six Weeks Date Code ## **General Requirements:** - 1.0 Cathode Band - 2.0 First Line: - ON Semiconductor Logo - 3.0 Second Line: Device name - For 1Nxx series: 3[rd] to 4[th] characters of the device name. For BZxx series: 4[th] to 6[th] characters of the device name. - 4.0 Third Line: Device name - For 1Nxx series: 5[th] to 6[th] characters of the device name. For BZXyy series: Voltage rating - 5.0 Third Line: Device name - For 1Nxx series: 7[th] to 8[th] characters of the device name. - (the 8th character is the large die identification) For BZXyy series: Large Die Identification character - 6.0 Fourth Line: Date Code - Two Digit - Six Weeks Date Code - Where: X represents the last digit of the calendar year Y represents the Six weeks numeric code - 7.0 Devices shall be marked as required in the device specification (PID or ON Semiconductor Test Spec). - 8.0 Maximum no. of marking lines: 5 - 9.0 Maximum no. of digits per line: 3 - 10.0 ON Semiconductor logo must be 20 % taller than the alphanumeric marking and should occupy the 2 characters of the specified line. 11.0 Marking Font: Arial (Except ON Semiconductor Logo) - 12.0 First character of each marking line must be aligned vertically. 13.0 All device markings must be based on ON Semiconductor device specification. www.onsemi.com 3 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries. 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