1N5373B 1N5373B is a 68V Zener diode from On Semiconductor with 5W power dissipation in an axial lead package. It features ±5% tolerance and 1.2V forward voltage at 1A.
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1N5373B

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
1N5373B is a 68V Zener diode from On Semiconductor with 5W power dissipation in an axial lead package. It features ±5% tolerance and 1.2V forward voltage at 1A.
Total Stock: 202 pcs
$ Price Range: $0.14 - $0.43

1N5373B Available from 1 distributor

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1N5373B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
ESD Rating
Impedance (Max) (Zzt)
Industrial Grade
Lead Style
Maximum Lead Temperature for Soldering
Medical Grade
Military Grade
Mounting Type
Operating Temperature
Power
Power Derating
Storage Temperature
Supplier Device Package
Surge Power Rating
Termination Style
Thermal Resistance, Junction to Lead
Tolerance
Voltage
Zener Voltage (Nominal)

1N5373B Description

Short technical summary and product information.

The 1N5373B is a 68V Zener diode from the 1N53 series of 5W Surmetic 40 voltage regulators manufactured by On Semiconductor. It is designed for voltage regulation and protection applications requiring a stable 68V reference.

 

Electrical specifications include a nominal Zener voltage of 68V with ±5% tolerance, maximum power dissipation of 5W at 25°C lead temperature (derated 40 mW/°C above 25°C), reverse leakage current of 500 nA at 51.7V, and Zener impedance of 44 Ω at IZT. The diode can handle surge power up to 180W for 8.3 ms and has an ESD rating of Class 3 (>16 kV) per Human Body Model.

 

The device is housed in a T-18, axial lead plastic package with cathode band polarity marking. It is through-hole mountable and supports soldering at 260°C for 10 seconds. Operating temperature range is -65°C to 200°C.

 

Typical applications include voltage regulation, overvoltage protection, and clamping circuits in power supplies, industrial controls, and consumer electronics. The 1N5373B is a Pb-free compliant device (RoHS) and is REACH unaffected.

1N5373B Quick Information

Product Type: Zener Diode
Series: 1N53
Canonical Name: 1N5373B Zener Diode, 68V, 5W, Axial
Subcategory: Single Zener Diodes

1N5373B Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

1N5373B Estimated Pricing

Qty Low High
1+ $0.43 $0.43
10+ $0.34 $0.34
100+ $0.21 $0.21
500+ $0.20 $0.20
1,000+ $0.20 $0.20
1,700+ $0.17 $0.17
3,400+ $0.16 $0.16
8,500+ $0.14 $0.14
23,800+ $0.14 $0.14

Estimated market price range - modelled values for guidance only, not live distributor offers.

1N5373B Features

  • 68V nominal Zener voltage with ±5% tolerance.
  • 5W power dissipation at 25°C lead temperature.
  • Axial lead T-18 plastic package for through-hole mounting.
  • ESD rated Class 3 over 16 kV per HBM.
  • Surge power rating of 180W at 8.3 ms.

1N5373B Applications

  • Voltage regulation in power supply circuits.
  • Overvoltage protection for sensitive electronics.
  • Clamping and reference in industrial controls.

1N5373B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the 1N5373B?

68V nominal, ±5% tolerance.

What is the forward voltage of the 1N5373B?

1.2V maximum at 1A forward current.

What package does the 1N5373B come in?

T-18 axial lead plastic package.

What is the power dissipation rating of the 1N5373B?

5W maximum at 25°C lead temperature (derated 40 mW/°C above 25°C).

What is the surge power rating?

180W for 8.3 ms.

What is the ESD rating?

Class 3 (>16 kV) per Human Body Model.

What is the operating temperature range?

-65°C to 200°C.

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