Taiwan Semiconductor Corporation BZD27C180PW

Overview

BZD27C180PW from Taiwan Semiconductor is a 1 W, 180 V Zener diode in SOD-123W package, designed for precision voltage regulation and overvoltage protection in power supply rails and reference circuits. It delivers nominal Zener voltage of 180 V at 5 mA test current, with ±5% tolerance (171–189 V), clamping voltage of 229 V under 10/1000 µs surge, and leakage current ≤0.43 µA at 130 V.

For engineers reviewing the BZD27C180PW datasheet, BZD27C180PW pinout, BZD27C180PW application, or BZD27C180PW equivalent, key selection criteria include its 180 V nominal Zener voltage, 5 mA test current, 229 V clamping voltage under 10/1000 µs surge, 7000 Ω dynamic impedance at IZK, and SOD-123W low-profile surface-mount package compatibility with automated assembly.

Technical Context

The BZD27C180PW operates as a single-die silicon Zener diode optimized for stable reverse-biased breakdown in high-voltage regulation and transient suppression. Its thermal design supports junction temperatures from –55 °C to +175 °C, with R_θJA = 85 °C/W and R_θJL = 22 °C/W enabling reliable operation on standard PCB copper pads.

It exhibits a temperature coefficient of Zener voltage αV_Z = +0.09 to +0.13 %/°C, indicating positive drift with temperature-critical for reference stability in wide-temperature environments. The device meets J-STD-020 moisture sensitivity level 1 and JESD 201 class 2 whisker resistance, confirming suitability for reflow-soldered industrial applications.

Key Specifications

Pinout & Package

SOD-123W is a low-profile, surface-mount plastic package with cathode-indicating band, matte tin-plated leads solderable per J-STD-002, UL 94V-0 molding compound, and 0.016 g typical weight. Polarity is unambiguous via visible cathode band.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Compared with BZT03-C180 and BZX84-C180, the BZD27C180PW uniquely balances 1 W power handling, SOD-123W SMT compatibility, and verified 229 V clamping performance-making it optimal for industrial and telecom surge-critical designs where both regulation accuracy and transient robustness are required.

Availability

BZD27C180PW is available at Aetrix Electronics and suitable for industrial power supply regulation, telecom line card protection, high-voltage sensor reference, and automotive body control module clamp applications requiring stable component supply and full traceability.

Supply support for BZD27C180PW includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, including Zener diodes, TVS, rectifiers, and MOSFETs, with ISO 9001 and IATF 16949 certification.

The BZD27C series was developed for high-reliability, high-voltage Zener regulation and transient suppression in industrial, telecom, and automotive power systems-emphasizing tight voltage tolerance, low leakage, and robust surge performance in compact SMD packages.

FAQ

What is the nominal Zener voltage and tolerance of the BZD27C180PW?

The BZD27C180PW has a nominal Zener voltage of 180 V with a tolerance range of 171 V to 189 V (±5%) at a test current of 5 mA. This specification is confirmed in the Electrical Specifications table of Taiwan Semiconductor's D2203 datasheet revision, and defines the stable regulation window under standard DC bias conditions. The BZD27C180PW achieves this performance using a single-die silicon construction in the SOD-123W package.

What is the clamping voltage of the BZD27C180PW under surge conditions?

The BZD27C180PW has a clamping voltage of 229 V under a 10/1000 µs waveform, as specified in the Electrical Specifications section of the official datasheet. This value represents the maximum voltage the device allows across its terminals during standardized surge testing and is critical for protecting downstream components. The BZD27C180PW achieves this clamping performance while maintaining 100 W non-repetitive peak pulse power dissipation.

What package type does the BZD27C180PW use, and what are its key mechanical features?

The BZD27C180PW uses the SOD-123W surface-mount package, featuring a low-profile outline, matte tin-plated leads compliant with J-STD-002, UL 94V-0 flammability rating, and polarity indicated by a cathode band. Its mechanical data confirms a weight of approximately 0.016 g and compliance with JESD 201 class 2 whisker testing. The BZD27C180PW's SOD-123W footprint enables automated assembly and thermal performance with R_θJA = 85 °C/W on standard PCB copper.

What is the leakage current specification for the BZD27C180PW, and at what reverse voltage is it measured?

The BZD27C180PW specifies a maximum leakage current of 0.43 µA at a reverse voltage of 130 V, as documented in the Electrical Specifications table. This ultra-low leakage ensures minimal power loss and measurement error in high-impedance reference and bias networks. The BZD27C180PW maintains this performance across its rated junction temperature range of –55 °C to +175 °C, supporting stable operation in demanding industrial environments.

Does the BZD27C180PW meet RoHS and halogen-free compliance standards?

Yes, the BZD27C180PW is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of Taiwan Semiconductor's datasheet. These compliance attributes are verified for the entire BZD27C11PW–BZD27C220PW family, including the BZD27C180PW, and apply to all materials used in the SOD-123W package construction and plating.