Taiwan Semiconductor Corporation 1PGSMB5952

Overview

1PGSMB5952 from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 130 V, 3 W power rating, 2.9 mA test current, and DO-214AA (SMB) package. It regulates voltage in high-voltage DC/DC converters and SMPS feedback loops where stable reference under reverse bias is required.

For engineers reviewing the 1PGSMB5952 datasheet, 1PGSMB5952 pinout, 1PGSMB5952 application, or 1PGSMB5952 equivalent, key selection criteria include zener voltage tolerance (±5%), junction temperature range (–55°C to +175°C), thermal resistance (R_θJA = 59°C/W), and compliance with J-STD-020 moisture sensitivity level 1.

Technical Context

The 1PGSMB5952 operates as a single-die, silicon planar Zener diode with glass-passivated junction for enhanced reliability and low leakage. Its 130 V nominal zener voltage is specified at I_ZT = 2.9 mA, with dynamic impedance Z_ZT = 5000 Ω and maximum DC zener current I_ZM = 11 mA.

Designed for surface-mount assembly on PCBs with 10 mm × 10 mm copper pads, it delivers thermal performance of R_θJL = 21°C/W and R_θJC = 23°C/W, enabling stable operation up to T_J = 175°C in compact power supply layouts.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by band on molded body. Matte tin-plated leads, solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ130A and 1N5375B, the 1PGSMB5952 offers optimal balance of precision (±5% V_Z at 2.9 mA), SMB footprint compatibility, and 3 W steady-state capability-making it uniquely suited for space-constrained, high-voltage DC regulation where both accuracy and manufacturability matter.

Availability

1PGSMB5952 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 full traceability and RoHS/halogen-free compliance.

Supply support for 1PGSMB5952 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, rectifier, and MOSFET products for industrial and consumer markets.

The 1PGSMB59xx family is engineered for high-reliability surface-mount voltage regulation in compact power conversion systems, emphasizing thermal robustness, JEDEC-compliant packaging, and tight parametric control across voltage grades.

FAQ

What is the exact zener voltage tolerance for 1PGSMB5952?

The 1PGSMB5952 has a nominal zener voltage of 130 V with a tolerance of ±5%, meaning the actual measured V_Z falls between 123.5 V and 136.5 V at I_ZT = 2.9 mA and T_A = 25°C. This tolerance is confirmed in the Electrical Specifications table and applies to all units within the 1PGSMB5926–1PGSMB5956 series per Version C2102 documentation.

Can 1PGSMB5952 be used in place of a 130 V Zener in a feedback divider?

Yes, the 1PGSMB5952 is specifically designed for such roles. Its 130 V nominal V_Z, low dynamic impedance (5000 Ω), and stable thermal coefficient make it suitable for precision shunt references in optocoupler-based feedback networks. Ensure bias current remains ≥2.9 mA and ≤11 mA to stay within its specified operating window.

What is the maximum ambient temperature for continuous operation of 1PGSMB5952?

The 1PGSMB5952 supports continuous operation up to +175°C junction temperature. On a standard 10 mm × 10 mm Cu pad (R_θJA = 59°C/W), this translates to a maximum ambient temperature of approximately +120°C at full 3 W dissipation. Derating is required above 75°C lead temperature per Absolute Maximum Ratings.

Is 1PGSMB5952 compliant with lead-free soldering processes?

Yes, the 1PGSMB5952 features matte tin-plated leads and is rated for soldering per J-STD-002. It meets RoHS and halogen-free requirements (IEC 61249-2-21), and its moisture sensitivity level is J-STD-020 Level 1-meaning it can be placed directly into reflow without baking, supporting standard Pb-free assembly lines.

How does the thermal resistance of 1PGSMB5952 compare to through-hole Zeners?

The 1PGSMB5952 has R_θJA = 59°C/W on a 10 mm × 10 mm Cu pad-significantly better than typical through-hole Zeners (e.g., DO-41 at ~100°C/W). Its DO-214AA (SMB) package enables superior heat spreading via PCB copper, making it more suitable for high-density, thermally constrained designs than legacy axial packages.