Taiwan Semiconductor Corporation 1PGSMC5359

Overview

1PGSMC5359 from Taiwan Semiconductor is a surface-mount 24 V nominal Zener diode in DO-214AB (SMC) package, rated for 5 W steady-state power dissipation, with 5% voltage tolerance (22.8–25.2 V), 50 Ω dynamic impedance at 4 mA test current, and maximum 0.5 μA leakage at 18.2 V reverse bias. It serves as a precision voltage reference and overvoltage clamp in DC/DC converter feedback loops.

For engineers reviewing the 1PGSMC5359 datasheet, 1PGSMC5359 pinout, 1PGSMC5359 application, or 1PGSMC5359 equivalent, key selection criteria include its 24 V nominal Zener voltage, 5 W power rating on 16 mm × 16 mm Cu pad, 20 °C/W junction-to-lead thermal resistance, and DO-214AB polarity-indicating cathode band - all critical for thermal reliability and layout integration in high-density power circuits.

Technical Context

This Zener diode operates in reverse breakdown mode to regulate or clamp voltage with tight 5% tolerance across the 22.8–25.2 V range. Its low 50 Ω dynamic impedance at I_ZT = 4 mA ensures stable regulation under varying load conditions, while the 0.5 μA leakage at V_R = 18.2 V confirms effective blocking below knee voltage.

Designed for surface-mount assembly, it features photo-glass passivated junction, matte tin-plated leads compliant with J-STD-002, and meets JESD 201 Class 2 whisker resistance. The DO-214AB package delivers 55 °C/W junction-to-ambient thermal resistance when mounted on a 16 mm × 16 mm copper pad.

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 SMCJ24A and BZX84-C24, the 1PGSMC5359 uniquely combines 5 W continuous Zener regulation, 50 Ω dynamic impedance, and DO-214AB thermal performance - making it the sole choice for high-power, precision-clamp applications requiring both accuracy and ruggedness.

Availability

1PGSMC5359 is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply with full traceability and long-lifecycle support.

Supply support for 1PGSMC5359 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 global power management and protection markets since 1979.

The 1PGSMC series is part of TSC's high-reliability Zener diode portfolio engineered specifically for industrial-grade voltage regulation and overvoltage clamping in high-density, thermally constrained power systems.

FAQ

What is the nominal Zener voltage and tolerance of the 1PGSMC5359?

The 1PGSMC5359 has a nominal Zener voltage of 24 V with a tolerance of ±5%, corresponding to a guaranteed range of 22.8 V to 25.2 V at 4 mA test current. This specification is confirmed in the Electrical Specifications table of the official Taiwan Semiconductor datasheet Version D2102. The 1PGSMC5359 maintains this tight tolerance across its operating temperature range and supports stable regulation in feedback circuits where precision voltage referencing is required.

What is the maximum power dissipation rating for the 1PGSMC5359 and under what conditions?

The 1PGSMC5359 is rated for 5 W maximum DC power dissipation at lead temperature (T_L) = 75 °C, measured with zero lead length on a 16 mm × 16 mm copper pad test board. Derating is required above 75 °C at 33.3 mW/°C. This rating is defined in the Absolute Maximum Ratings section of the Taiwan Semiconductor datasheet. The 1PGSMC5359 achieves this performance using its DO-214AB package and low R_θJL of 20 °C/W.

Does the 1PGSMC5359 have a specified Zener impedance, and how does it affect regulation performance?

Yes, the 1PGSMC5359 has a typical Zener impedance (Z_ZT) of 50 Ω at I_ZT = 4 mA, as specified in the Electrical Specifications table. This low dynamic impedance ensures minimal output voltage variation under changing load currents - critical for maintaining regulation accuracy in feedback networks. The 1PGSMC5359's 50 Ω value is significantly lower than many SOT-23 Zeners, directly improving loop stability in DC/DC converter applications.

What is the leakage current specification for the 1PGSMC5359, and at what reverse voltage is it measured?

The 1PGSMC5359 exhibits a maximum leakage current (I_R) of 0.5 μA at a reverse voltage (V_R) of 18.2 V, per the Electrical Specifications table. This low leakage ensures negligible standby power loss in always-on circuits and prevents false triggering in clamping configurations. The 1PGSMC5359's leakage performance supports reliable operation in energy-sensitive lighting and adapter designs where quiescent current must remain sub-microamp.

Is the 1PGSMC5359 RoHS and halogen-free compliant, and what standards does it meet?

Yes, the 1PGSMC5359 is RoHS compliant and halogen-free per IEC 61249-2-21, as stated in the Features section of the Taiwan Semiconductor datasheet. Its molding compound meets UL 94V-0 flammability rating, and its matte tin-plated leads comply with J-STD-002 solderability requirements. These certifications confirm the 1PGSMC5359's suitability for environmentally regulated industrial and consumer electronics manufacturing.