Taiwan Semiconductor Corporation 1PGSMB5928

Overview

1PGSMB5928 from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 13 V, 28.8 mA test current, 7.0 Ω dynamic impedance at I_ZT, 3 W total power dissipation, and DO-214AA (SMB) package. It regulates voltage in DC/DC converters and SMPS feedback loops where stable reference and low thermal resistance are required.

For engineers reviewing the 1PGSMB5928 datasheet, 1PGSMB5928 pinout, 1PGSMB5928 application, or 1PGSMB5928 equivalent, key selection criteria include zener voltage tolerance (±5%), junction-to-lead thermal resistance (21 °C/W), leakage current (≤1 μA at 9.9 V), and compliance with J-STD-020 moisture sensitivity level 1.

Technical Context

The 1PGSMB5928 operates as a single-die, unidirectional voltage reference device with cathode-band polarity indication. Its glass-passivated junction ensures stable breakdown characteristics under repetitive surge conditions and supports automated SMT placement without solderability degradation.

Thermal performance is defined for mounting on a 10 mm × 10 mm copper pad: R_θJL = 21 °C/W enables reliable 3 W operation up to T_J = 175 °C, while R_θJA = 59 °C/W reflects ambient-limited derating above 75 °C ambient.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode identified by molded band. Matte tin-plated leads, RoHS and halogen-free compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5928BRLG and SMBJ13A, the 1PGSMB5928 delivers superior regulation accuracy (±5% vs. ±5% but tighter distribution), lower dynamic impedance (7.0 Ω vs. 10 Ω), and SMT-ready DO-214AA packaging-making it optimal for space-constrained, high-stability DC/DC feedback applications.

Availability

1PGSMB5928 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, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for 1PGSMB5928 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 global distribution and AEC-Q200 qualified lines.

The 1PGSMB series targets high-reliability surface-mount voltage regulation, designed specifically for compact, thermally demanding power conversion systems where glass passivation and J-STD-020 Level 1 handling are critical.

FAQ

What is the exact zener voltage range for 1PGSMB5928?

The 1PGSMB5928 has a guaranteed zener voltage range of 12.35 V (min) to 13.65 V (max) at 28.8 mA test current and 25 °C ambient, corresponding to a ±5% tolerance around the nominal 13 V rating. This range is verified per the manufacturer's electrical specifications table and applies under steady-state thermal equilibrium conditions.

Is 1PGSMB5928 suitable for use in automotive applications?

The 1PGSMB5928 is not AEC-Q200 qualified and is not recommended for automotive safety-critical or engine-compartment applications. While its operating junction temperature range (–55 °C to +175 °C) meets some automotive ambient requirements, Taiwan Semiconductor does not list it in their AEC-Q200 product portfolio, and no qualification reports are published for 1PGSMB5928.

What is the maximum DC zener current (I_ZM) for 1PGSMB5928?

The maximum DC zener current for 1PGSMB5928 is 115 mA, derived from P_tot = 3 W and V_Z ≈ 13 V (3 W ÷ 13 V ≈ 231 mA), but limited by thermal constraints and specified directly in the electrical table. At 25 °C ambient and proper PCB copper area, 115 mA represents the highest continuous reverse current before exceeding T_J = 175 °C.

Does 1PGSMB5928 have a specified capacitance value?

No capacitance value is specified for 1PGSMB5928 in the provided documentation. The datasheet includes a typical junction capacitance curve (Fig.2) showing ~100 pF at 0 V and decreasing with reverse bias, but no guaranteed min/max or test condition is given. For timing-critical or high-frequency applications, designers should consult the curve or characterize empirically.

How is polarity indicated on the 1PGSMB5928 package?

Polarity on the 1PGSMB5928 is indicated by a molded cathode band on the DO-214AA (SMB) case. The banded end corresponds to the cathode terminal, and the opposite end is the anode. This marking is visible on the top surface of the molded body and aligns with JEDEC-standard SMB orientation for automated optical recognition during pick-and-place.