Taiwan Semiconductor Corporation BZX85C5V1 A0G

Overview

BZX85C5V1 A0G from Taiwan Semiconductor is a 1.3W, ±5% tolerance Zener diode with nominal zener voltage 5.1V, tested at 10mA, dynamic impedance 45Ω at 10mA, and maximum leakage current 1µA at 1.5V reverse bias; used for low-voltage stabilization in DC/DC converters and lighting circuits.

For engineers reviewing the BZX85C5V1 A0G datasheet, BZX85C5V1 A0G pinout, BZX85C5V1 A0G application, or BZX85C5V1 A0G equivalent, key selection criteria include zener voltage tolerance (±5%), power dissipation (1.3W), thermal resistance (130°C/W), DO-41 package compatibility, and cathode-band polarity marking.

Technical Context

This discrete Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and input conditions. It features hermetically sealed glass construction, pure tin-plated leads compliant with J-STD-002, and a junction temperature range of −65°C to +200°C.

The device delivers regulated output with V_Z = 4.8V (min) to 5.4V (max) at I_ZT = 10mA, Z_ZT = 45Ω, and exhibits low leakage (I_R ≤ 1µA at V_R = 1.5V), making it suitable for precision voltage reference and low-power stabilization.

Key Specifications

Pinout & Package

DO-41 axial-leaded package with cathode indicated by a single black band; leads are pure tin plated and solderable per J-STD-002; weight ≈242 mg.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4733A and BZX55C5V1, the BZX85C5V1 A0G offers superior thermal performance (130°C/W vs. ≥150°C/W), higher power rating (1.3 W), and DO-41 mechanical robustness-critical for industrial and lighting applications demanding long-term stability under thermal stress.

Availability

BZX85C5V1 A0G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, and lighting applications requiring stable component supply, consistent DO-41 packaging, and RoHS-compliant Zener performance.

Supply support for BZX85C5V1 A0G 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 BZX85C series belongs to TSC's general-purpose Zener diode product line, engineered for cost-effective, reliable voltage regulation and reference in space-constrained, thermally demanding applications.

FAQ

What is the nominal zener voltage and tolerance of BZX85C5V1 A0G?

The BZX85C5V1 A0G has a nominal zener voltage of 5.1 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 4.8 V and 5.4 V when tested at 10 mA. This tolerance is confirmed in the Electrical Specifications table of the official Taiwan Semiconductor datasheet (Version H2301), and applies across the full operating temperature range.

What package type and lead finish does BZX85C5V1 A0G use?

BZX85C5V1 A0G uses the DO-41 axial-leaded package with pure tin-plated leads, fully compliant with J-STD-002 solderability standards. The cathode is marked by a single black band, and the device weighs approximately 242 mg. This mechanical construction is explicitly defined in the Mechanical Data and Package Outline Dimensions sections of the Taiwan Semiconductor datasheet.

What is the maximum power dissipation and thermal resistance of BZX85C5V1 A0G?

BZX85C5V1 A0G has a maximum power dissipation (P_D) of 1.3 W at 25°C ambient and a junction-to-ambient thermal resistance (R_θJA) of 130°C/W. These values are specified in the Absolute Maximum Ratings and Thermal Performance tables, enabling thermal design margin calculation for PCB layouts without forced airflow or heatsinking.

How does the leakage current of BZX85C5V1 A0G compare at low reverse voltage?

At V_R = 1.5 V, the BZX85C5V1 A0G exhibits a maximum leakage current (I_R) of 1 µA. This low leakage supports energy-efficient operation in battery-backed or always-on circuits. The value is measured per the datasheet's Electrical Specifications table and reflects guaranteed performance across production lots.

Is BZX85C5V1 A0G RoHS compliant and what is its junction temperature limit?

Yes, BZX85C5V1 A0G is RoHS compliant and has a maximum junction temperature (T_J) of +200°C, with an operational range from −65°C to +200°C. These specifications are stated in the Features and Absolute Maximum Ratings sections of the official Taiwan Semiconductor documentation, confirming suitability for high-reliability industrial and lighting environments.