BZT52H-C18

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BZT52H-C18

BZT52H SERIES - SINGLE ZENER DIO

  • Manufacturer
  • Mfr. Part #BZT52H-C18
  • Package SOD-123F-2
  • Datasheet
  • In Stock5236

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Specifications

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Overview

Description

BZT52H-C18 is a Zener diode from the BZT52H family. It provides a nominal Zener voltage of 18 V and is intended for small, surface‑mount applications.
Key points:
- Type: 18 V Zener diode (SMD)
- Power rating: about 0.5 W
- Tolerance: ±5% (the “C” variant)
- Operation: reverse-biased to clamp at ~18 V; used for regulation and protection
- Package: very small SMD package (two terminals)
- Orientation: the cathode is the marked end (band); connect anode to the lower potential
Typical uses:
- Voltage regulation/clamping on power rails
- Reference in simple regulator circuits
- Overvoltage and transient protection in compact boards
For exact values (test current Iz, dynamic impedance, maximum reverse current, temperature coefficients) consult the specific manufacturer’s datasheet (e.g., Vishay/Bourns) for BZT52H-C18.

Features

BZT52H-C18 features:
- 18 V Zener diode for regulation and clamping
- 0.5 W maximum power dissipation (at 25°C)
- Small surface-mount device (SMD) in the BZT52H family
- Wide operating temperature range: typically -55°C to +150°C
- RoHS compliant (compact, suitable for small boards)

Package

The BZT52H-C18 is an SMD Zener diode packaged in a SOD-523 (miniature surface-mount) package.

Pinout

Pin count: 2 (anode and cathode).
Function: BZT52H‑C18 is an 18 V Zener diode used as a low‑power voltage reference/clamping device. It provides voltage regulation, overvoltage protection and transient suppression in low‑current circuits (reverse breakdown at ≈18 V).

Manufacturer

The BZT52H‑C18 is an SMD 18 V Zener diode in the BZT52H family that is produced by multiple semiconductor component manufacturers (examples include Diodes Incorporated, ROHM, Vishay and Comchip Technology). These manufacturers are semiconductor/device companies that design and produce discrete components (diodes, transistors, rectifiers) and small-signal ICs for the electronics industry.

Application

- Fixed 18V reference for shunt regulators
- Overvoltage protection and rail clamping on 18V or lower circuits
- Transient/spike suppression on power lines in automotive and industrial electronics
- Input protection and voltage limiting for analog/sensor circuits

Equivalent

Equivalent parts are any 18 V Zener diodes with the same power rating/package. Common substitutes: BZT52‑C18 (Diodes Inc), BZT52B‑C18 (Rohm), ZMM18 (SMD Zener), or 1N4747A (18 V, 1 W through‑hole). Verify package, power dissipation and tolerance before replacing.

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

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