Taiwan Semiconductor Corporation 1PGSMB5952H

Overview

1PGSMB5952H from Taiwan Semiconductor is a surface-mount silicon Zener diode with a nominal Zener voltage of 130 V, ±5% tolerance, 3 W power rating, and DO-214AA (SMB) package. It delivers stable voltage regulation and reference functions in automotive-grade circuits requiring AEC-Q101 qualification, low inductance, and moisture resistance per J-STD-020 Level 1.

For engineers reviewing the 1PGSMB5952H datasheet, 1PGSMB5952H pinout, 1PGSMB5952H application, or 1PGSMB5952H equivalent, key selection criteria include its 130 V nominal Zener voltage, 2.9 Ω dynamic impedance at 450 mA test current, 11 mA maximum DC Zener current, thermal resistance (R_θJA = 59 °C/W), and AEC-Q101 qualification for automotive reliability.

Technical Context

The 1PGSMB5952H operates as a single-die, unidirectional Zener diode optimized for precision voltage clamping and reference applications. Its photo-glass passivated junction ensures long-term stability under thermal cycling, while the matte tin-plated leads support reliable solderability per J-STD-002.

Designed for high-voltage regulation up to 136.5 V (max), it maintains low leakage current (≤1 μA at 98.8 V) and exhibits predictable dynamic impedance (2.9 Ω at I_ZT = 450 mA), enabling accurate voltage control in protection and feedback loops across industrial and automotive power supplies.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, cathode indicated by band. Weight: ~0.100 g. Molding compound meets UL 94V-0.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ130A and 1N5375B, the 1PGSMB5952H uniquely combines AEC-Q101 qualification, SMB surface-mount form factor, and tight 5% Zener tolerance-making it the preferred choice for production automotive voltage reference and regulation where long-term DC stability and manufacturability are critical.

Availability

1PGSMB5952H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial high-voltage reference supplies, telecom line card surge suppression, and medical imaging power module clamping requiring stable component supply and AEC-Q101 compliance.

Supply support for 1PGSMB5952H 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, TVS, and rectifier diodes, with global distribution and automotive qualification capabilities.

The 1PGSMB59xxH series was developed specifically for AEC-Q101-compliant, high-reliability Zener regulation in space-constrained automotive and industrial systems, emphasizing thermal robustness, low inductance, and automated assembly compatibility.

FAQ

What is the nominal Zener voltage of the 1PGSMB5952H and how is it specified?

The 1PGSMB5952H has a nominal Zener voltage of 130 V, with a guaranteed range of 123.5 V (min) to 136.5 V (max) at 450 mA test current, reflecting ±5% tolerance per the device marking code P952B. This specification is measured under thermal equilibrium at 25 °C ambient and defines the DC voltage regulation point for design calculations in feedback or clamp circuits using the 1PGSMB5952H.

Is the 1PGSMB5952H qualified for automotive applications?

Yes, the 1PGSMB5952H is AEC-Q101 qualified, meaning it has passed stress tests for temperature cycling, humidity bias, mechanical shock, and other reliability requirements defined for discrete semiconductors in automotive electronics. This qualification applies specifically to the 1PGSMB5952H in its DO-214AA (SMB) package and supports use in engine control units, body control modules, and ADAS power systems where the 1PGSMB5952H serves as a voltage reference or clamp.

What is the maximum DC Zener current rating for the 1PGSMB5952H?

The maximum DC Zener current (I_ZM) for the 1PGSMB5952H is 11 mA, derived from its 3 W power rating and minimum Zener voltage (123.5 V). This value represents the highest continuous current the 1PGSMB5952H can sustain without exceeding its thermal limits under steady-state conditions on a standard 10 mm × 10 mm Cu pad PCB, and must be respected in constant-current bias designs using the 1PGSMB5952H.

Does the 1PGSMB5952H have moisture sensitivity concerns for SMT assembly?

No, the 1PGSMB5952H is rated at J-STD-020 Moisture Sensitivity Level 1, meaning it may be stored indefinitely at ≤30 °C/85% RH and placed directly onto reflow lines without baking or dry-pack requirements. This level of robustness simplifies manufacturing logistics and supports high-yield automated placement for the 1PGSMB5952H in volume production environments.

What is the thermal resistance from junction to ambient for the 1PGSMB5952H?

The junction-to-ambient thermal resistance (R_θJA) of the 1PGSMB5952H is 59 °C/W when mounted on a standard 10 mm × 10 mm copper pad test board. This value determines the temperature rise above ambient at full 3 W power dissipation and guides PCB layout decisions-such as adding thermal vias or larger copper areas-to maintain the 1PGSMB5952H junction below its 175 °C maximum rating in actual application conditions.