Taiwan Semiconductor Corporation 1PGSMC5354

Overview

1PGSMC5354 from Taiwan Semiconductor is a surface-mount 5W Zener diode with nominal zener voltage 17V (min 16.15V, max 17.85V), 70Ω dynamic impedance at 3mA test current, and 0.5μA leakage at 12.9V reverse bias. It operates from −55°C to +175°C junction temperature and is used for voltage regulation and overvoltage protection in DC/DC converters.

For engineers reviewing the 1PGSMC5354 datasheet, 1PGSMC5354 pinout, 1PGSMC5354 application, or 1PGSMC5354 equivalent, key selection factors include its DO-214AB (SMC) package, 5W power rating, 17V nominal zener voltage tolerance (±5%), low-inductance construction, and RoHS/halogen-free compliance for industrial power supply designs.

Technical Context

This discrete Zener diode functions as a precision voltage reference and clamping device in regulated power rails. Its photo-glass passivated junction ensures stable breakdown characteristics, while the DO-214AB package supports automated placement and provides thermal resistance of 22°C/W (junction-to-case) and 55°C/W (junction-to-ambient) on a 16mm × 16mm copper pad.

The device delivers 280mA maximum DC zener current at 17V, with leakage limited to 0.5μA at 12.9V (85% of V_Z). Its moisture sensitivity level is J-STD-020 Level 1, and it meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.

Key Specifications

Pinout & Package

DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈ 0.210 g, UL 94V-0 rated compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMCJ17A and BZX84-C16, the 1PGSMC5354 uniquely combines 5W continuous power handling, DO-214AB thermal robustness, and 17V ±5% regulation accuracy-making it suitable for primary-side SMPS reference and clamping where both precision and power endurance are required.

Availability

1PGSMC5354 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, lighting applications, and adapters requiring stable component supply with industrial-grade thermal and environmental compliance.

Supply support for 1PGSMC5354 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.

The 1PGSMC series is part of TSC's high-reliability Zener diode portfolio designed specifically for voltage regulation and overvoltage protection in power conversion systems operating across extended temperature ranges.

FAQ

What is the nominal zener voltage and tolerance of the 1PGSMC5354?

The 1PGSMC5354 has a nominal zener voltage of 17 V with a tolerance of ±5%, corresponding to a guaranteed range of 16.15 V to 17.85 V at 3 mA test current. This tolerance is explicitly defined in the electrical specifications table and applies to all units per the 5% type designation in the ordering code. The 1PGSMC5354 achieves this specification using photo-glass passivation for process consistency.

What is the maximum DC zener current rating for the 1PGSMC5354?

The 1PGSMC5354 supports a maximum DC zener current (I_ZM) of 280 mA at its nominal 17 V zener voltage. This value is derived from the 5 W power rating (P_D = V_Z × I_ZM) and confirmed in the electrical specifications table. Operation at this current requires adherence to the thermal derating curve and use of a 16 mm × 16 mm copper pad per the datasheet layout recommendation.

Does the 1PGSMC5354 have a specified junction-to-ambient thermal resistance?

Yes, the 1PGSMC5354 has a specified junction-to-ambient thermal resistance (R_θJA) of 55 °C/W when mounted on a 16 mm × 16 mm copper pad test board. This value is documented in the Thermal Performance section and directly determines the allowable ambient temperature for full 5 W operation. The 1PGSMC5354 also specifies R_θJC = 22 °C/W and R_θJL = 20 °C/W for alternative thermal path modeling.

Is the 1PGSMC5354 compliant with RoHS and halogen-free standards?

Yes, the 1PGSMC5354 is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements appear in the FEATURES section of the official datasheet and are verified through material declarations. The device uses matte tin-plated leads and UL 94V-0 molding compound, supporting environmentally regulated industrial and consumer applications.

What package type does the 1PGSMC5354 use, and how is polarity marked?

The 1PGSMC5354 uses the DO-214AB (SMC) surface-mount package. Polarity is marked by a visible cathode band on the body, consistent with JEDEC-standard DO-214AB mechanical drawings. The package features solderable matte tin leads, meets JESD201 Class 2 whisker resistance, and weighs approximately 0.210 g. The 1PGSMC5354's marking code "P354B" appears adjacent to the cathode band.