Taiwan Semiconductor Corporation BZX85C8V2 R0G

Overview

BZX85C8V2 R0G from Taiwan Semiconductor is a 1.3W, ±5% tolerance Zener diode with nominal zener voltage 8.2V, tested at 5mA, dynamic impedance 200Ω at 5mA, and maximum leakage current 1µA at 6.2V reverse bias, used for low-voltage stabilization in DC/DC converters and lighting circuits.

For engineers reviewing the BZX85C8V2 R0G datasheet, BZX85C8V2 R0G pinout, BZX85C8V2 R0G application, or BZX85C8V2 R0G equivalent, key selection criteria include zener voltage tolerance, power dissipation (1.3W), thermal resistance (130°C/W), junction temperature range (–65°C to +200°C), and DO-41 package compatibility with through-hole assembly.

Technical Context

This discrete Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load or input conditions. It features hermetically sealed glass construction, pure tin-plated leads compliant with J-STD-002, and polarity indicated by cathode band.

Designed for continuous DC operation, it supports pulse testing per 10ms condition and exhibits specified zener impedance derived from 60-cycle AC superimposed on DC test current. Its 200°C maximum junction temperature enables use in thermally demanding industrial environments.

Key Specifications

Pinout & Package

Package: DO-41 glass axial package with cathode band marking; leads are pure tin-plated and solderable per J-STD-002; weight ≈242mg.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4733A and BZX55C8V2, BZX85C8V2 R0G provides higher power headroom (1.3W), lower thermal resistance (130°C/W), and DO-41 mechanical robustness-making it preferred for industrial DC/DC and lighting applications requiring sustained regulation stability.

Availability

BZX85C8V2 R0G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, and lighting applications requiring stable component supply with RoHS compliance and through-hole assembly support.

Supply support for BZX85C8V2 R0G 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, rectifiers, and Zener diodes for industrial and consumer markets.

The BZX85C series is designed specifically for cost-sensitive, high-reliability voltage reference and stabilization tasks in power conversion, lighting control, and adapter circuits where hermetic sealing and wide voltage range are critical.

FAQ

What is the zener voltage tolerance of BZX85C8V2 R0G?

The BZX85C8V2 R0G has a nominal zener voltage of 8.2V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 7.7V and 8.7V when tested at 5mA. This tolerance is confirmed in the Electrical Specifications table and applies across the full operating temperature range. The BZX85C8V2 R0G maintains this specification without binning or additional screening.

What package type does BZX85C8V2 R0G use?

BZX85C8V2 R0G uses the DO-41 axial glass package, featuring hermetically sealed construction, cathode band polarity marking, and pure tin-plated leads compliant with J-STD-002 solderability standards. Its dimensions (Ø2.80mm body, 5.20mm lead spacing) are standardized for through-hole insertion and wave soldering. The BZX85C8V2 R0G's DO-41 footprint is compatible with legacy design libraries and automated assembly equipment.

What is the maximum power dissipation for BZX85C8V2 R0G?

The BZX85C8V2 R0G has a maximum power dissipation (P_D) of 1.3W at 25°C ambient temperature, as specified in the Absolute Maximum Ratings table. Derating is required above 25°C at 10.8mW/°C based on its 130°C/W junction-to-ambient thermal resistance. This 1.3W rating enables the BZX85C8V2 R0G to handle sustained regulation loads where lower-power Zeners would overheat.

How is polarity identified on BZX85C8V2 R0G?

Polarity on the BZX85C8V2 R0G is indicated by a visible cathode band near one end of the DO-41 glass body. The banded end corresponds to the cathode terminal, which must be connected to the higher-potential side of the circuit during reverse-bias operation. This marking is consistent across all BZX85C-series devices and aligns with JEDEC DO-41 mechanical standards. Correct orientation is essential for proper BZX85C8V2 R0G regulation function.

Is BZX85C8V2 R0G RoHS compliant?

Yes, BZX85C8V2 R0G is RoHS compliant, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor documentation. The device uses green compound encapsulation and lead finishes that meet EU Directive 2011/65/EU requirements. Compliance is verified per manufacturing lot and documented in TSC's material declarations. BZX85C8V2 R0G can be used in consumer, industrial, and commercial products requiring RoHS certification.