Taiwan Semiconductor Corporation 1PGSMC5356

Overview

1PGSMC5356 from Taiwan Semiconductor is a surface-mount 5W Zener diode with nominal zener voltage 19V (18.05–19.95V), 65Ω dynamic impedance at 3mA test current, and maximum DC zener current of 250mA; used for voltage regulation and overvoltage protection in SMPS and on-board DC/DC converters.

For engineers reviewing the 1PGSMC5356 datasheet, 1PGSMC5356 pinout, 1PGSMC5356 application, or 1PGSMC5356 equivalent, key selection factors include its DO-214AB (SMC) package, 175°C max junction temperature, 20°C/W junction-to-lead thermal resistance, and 0.5μA leakage at 14.4V reverse bias.

Technical Context

This discrete Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and line conditions. Its glass-passivated chip junction ensures long-term stability and low leakage, while the DO-214AB package supports automated placement and delivers low inductance for high-frequency transient suppression.

The device is rated for 5W power dissipation at 75°C lead temperature with 22°C/W junction-to-case thermal resistance. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements, and is RoHS-compliant and halogen-free per IEC 61249-2-21.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, single-diode configuration with cathode indicated by band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ19A and 1N5356B, the 1PGSMC5356 provides optimal balance of precision regulation (±5% V_Z), SMT compatibility, and thermal performance (20°C/W R_θJL) - making it preferred for modern compact, automated power supply designs requiring stable DC references.

Availability

1PGSMC5356 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and LED lighting drivers requiring stable component supply with full traceability and lifecycle support.

Supply support for 1PGSMC5356 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 surface-mount voltage regulation and overvoltage protection in space-constrained, thermally demanding power conversion systems.

FAQ

What is the nominal zener voltage and tolerance of the 1PGSMC5356?

The 1PGSMC5356 has a nominal zener voltage of 19 V with a tolerance of ±5%, corresponding to a minimum of 18.05 V and maximum of 19.95 V at 3 mA test current. This tolerance is confirmed in the Electrical Specifications table and applies across the full operating temperature range. The 1PGSMC5356 achieves this accuracy via tightly controlled diffusion and glass passivation processes.

What package type does the 1PGSMC5356 use, and what are its mechanical highlights?

The 1PGSMC5356 uses the DO-214AB (SMC) surface-mount package. Key mechanical features include matte tin-plated leads compliant with J-STD-002 solderability, polarity indicated by cathode band, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance. Its weight is approximately 0.210 g, and it supports automated placement with low inductance.

What is the maximum power dissipation and thermal resistance of the 1PGSMC5356?

The 1PGSMC5356 is rated for 5 W DC power dissipation at a lead temperature of 75°C, with linear derating above that temperature. Its thermal resistances are R_θJL = 20°C/W (junction-to-lead), R_θJC = 22°C/W (junction-to-case), and R_θJA = 55°C/W (junction-to-ambient) when mounted on a 16 mm × 16 mm copper pad test board.

How does the 1PGSMC5356 perform in terms of leakage current and dynamic impedance?

The 1PGSMC5356 exhibits 0.5 μA maximum leakage current at 14.4 V reverse bias and 65 Ω dynamic impedance at 3 mA test current. These values ensure low standby power loss and stable regulation under dynamic load changes. The low Z_ZT directly contributes to tighter output voltage control in feedback loops.

Is the 1PGSMC5356 suitable for automotive or industrial temperature environments?

Yes, the 1PGSMC5356 supports a junction temperature range of –55°C to +175°C and is qualified for industrial and under-hood automotive applications where ambient temperatures exceed 125°C. Its glass-passivated junction and DO-214AB package deliver reliability under thermal cycling and humidity exposure per J-STD-020 Level 1 moisture sensitivity.