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BZX85C18 BZX85C18 is a 18V Zener diode from On Semiconductor with 1W power dissipation in a DO-204AL through-hole package.
Mfr Part #:

BZX85C18

Available from 2 distributors
Mfr Name: On Semiconductor
On Semiconductor
BZX85C18 is a 18V Zener diode from On Semiconductor with 1W power dissipation in a DO-204AL through-hole package.
Total Stock: 196,770 pcs

BZX85C18 Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
196,750 pcs
196750 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
20 pcs
20 pcs On Request 1 On Request On Request On Request On Request On Request

BZX85C18 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Derating Factor
Forward Voltage
Impedance (Max) (Zzt)
Knee Test Current
Lead Style
Leakage Current
Mounting Type
Operating Temperature
Operating Temperature Range
Package / Case
Power
Power Dissipation
Power Dissipation (Lead)
Storage Temperature
Supplier Device Package
Tape & Reel
Test Current
Tolerance
Voltage
Zener Impedance
Zener Impedance (Knee)
Zener Voltage
Zener Voltage (Nominal)

BZX85C18 Description

Short technical summary and product information.

The BZX85C18 is a Zener diode from On Semiconductor designed for voltage regulation and protection applications. It features a nominal Zener voltage of 18V with a tolerance of ±6%, and a maximum power dissipation of 1W at 25°C ambient temperature. The device offers a maximum Zener impedance of 20 Ω at a test current of 15 mA, and a knee impedance of 500 Ω at 0.5 mA.

 

This diode is housed in a DO-204AL (DO-41) axial leaded glass package, suitable for through-hole mounting. It operates over a wide temperature range from -65°C to 200°C, with a derating factor of 6.67 mW/°C above 50°C. The maximum forward voltage is 1.2V at 200 mA, and the leakage current is limited to 0.5 µA at 12.5V reverse voltage.

 

Typical applications include voltage clamping, overvoltage protection, and reference voltage generation in power supplies and industrial electronics. The robust glass package ensures reliability in demanding environments.

BZX85C18 Quick Information

Product Type: Zener Diode
Series: BZX85C
Canonical Name: BZX85C18 Zener Diode 18V 1W DO-204AL
Subcategory: Single Zener Diode

BZX85C18 Compliance

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

BZX85C18 Features

  • 18V nominal Zener voltage with ±6% tolerance.
  • 1W power dissipation at 25°C ambient.
  • Low Zener impedance of 20 Ω at 15 mA.
  • Wide operating temperature range -65°C to 200°C.
  • Through-hole DO-204AL glass package.

BZX85C18 Applications

  • Voltage regulation in power supply circuits.
  • Overvoltage protection for sensitive electronics.
  • Reference voltage generation in analog circuits.
  • Clamping and transient suppression applications.

BZX85C18 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the Zener voltage of the BZX85C18?

The nominal Zener voltage is 18V, with a range of 16.8V to 19.1V.

What is the power dissipation rating of the BZX85C18?

Maximum power dissipation is 1W at 25°C ambient temperature, and 1.3W at 25°C lead temperature.

What is the package type of the BZX85C18?

The device is available in a DO-204AL (DO-41) axial leaded through-hole package.

What is the operating temperature range of the BZX85C18?

The operating and storage temperature range is -65°C to 200°C.

What is the forward voltage of the BZX85C18?

Maximum forward voltage is 1.2V at a forward current of 200 mA.

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