Taiwan Semiconductor Corporation BZW06-23BH

Overview

BZW06-23BH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode with a 23.1V working stand-off voltage, 27V nominal breakdown voltage, and 37.5V clamping voltage at 16A (10/1000μs). It features AEC-Q101 qualification, low dynamic impedance, and sub-1ps response time, deployed for automotive ESD and load-dump protection in power supply rails and CAN/LIN interface circuits.

For engineers reviewing the BZW06-23BH datasheet, BZW06-23BH pinout, BZW06-23BH application, or BZW06-23BH equivalent, key selection criteria include its DO-204AC package, unidirectional polarity, 175°C max junction temperature, and AEC-Q101 compliance for automotive-grade reliability validation.

Technical Context

The BZW06-23BH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds 25.7–28.4V (VBR min/max at 1mA), clamping transients to ≤37.5V at 16A peak pulse current. Its thermal design relies on R_θJL = 60°C/W and R_θJA = 100°C/W, enabling sustained operation up to 175°C junction temperature.

It delivers 600W non-repetitive surge capability per 10/1000μs waveform, with <1μA leakage above 10V and a 0.096%/°C VBR temperature coefficient. Polarity is marked by cathode band; terminals are pure tin-plated for J-STD-002 solderability.

Key Specifications

Pinout & Package

DO-204AC (DO-15) package with axial leads: Cathode indicated by band-marked end; anode is unmarked lead. Lead length 9.5 mm (0.375") for thermal rating compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Compared with SMBJ24A and P6KE27A, the BZW06-23BH uniquely combines AEC-Q101 qualification, tighter VBR tolerance (±5%), and lower clamping voltage (37.5V vs. ≥43.5V), making it the sole choice for new automotive designs requiring validated reliability and minimal voltage overshoot.

Availability

BZW06-23BH is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor power conditioning, and LED driver overvoltage clamping requiring stable component supply and long-term lifecycle support.

Supply support for BZW06-23BH 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, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.

The BZW06 series was engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, emphasizing robust clamping consistency, thermal resilience, and high-surge survivability in compact DO-204AC packaging.

FAQ

What does the "H" suffix in BZW06-23BH signify?

The "H" suffix in BZW06-23BH indicates full AEC-Q101 qualification, confirming that the device has passed stress tests for automotive-grade reliability-including temperature cycling, humidity bias HAST, and mechanical shock-per JESD47 standards. This certification applies specifically to the BZW06-23BH lot, not generic BZW06-23 variants. The BZW06-23BH must be specified by full part number to guarantee AEC-Q101 compliance.

Can BZW06-23BH replace BZW06-23 in an existing design?

Yes, BZW06-23BH is a direct replacement for BZW06-23 in terms of electrical parameters and DO-204AC package, but adds AEC-Q101 qualification. No PCB changes are needed. However, BZW06-23BH undergoes additional automotive-specific screening, so it should only be substituted where AEC-Q101 compliance is required or beneficial. The BZW06-23BH maintains identical VWM (23.1V), VBR (25.7–28.4V), and VC (37.5V) specs as BZW06-23.

What is the maximum peak pulse current the BZW06-23BH can handle?

The BZW06-23BH supports a maximum peak pulse current of 16A under the 10/1000μs standard waveform, corresponding to its 600W rating. At 8/20μs waveform, it handles 83A-verified per the manufacturer's published clamping curves. Derating applies above 25°C ambient; at 75°C, the usable IPPM drops to ~12.5A. Always reference the BZW06-23BH pulse derating curve (Fig.2) for precise thermal boundary conditions.

Is BZW06-23BH suitable for bidirectional signal line protection?

No, BZW06-23BH is unidirectional and unsuitable for bidirectional data lines like USB or RS-485. Its cathode-band marking and asymmetric IV curve mean it only clamps in reverse bias. For bidirectional protection, use the BZW06-23BH's counterpart BZW06-23B (bidirectional version), which has symmetrical breakdown in both polarities. The BZW06-23BH must be oriented correctly-anode to ground-to function; reverse orientation causes open-circuit behavior.

How does the temperature coefficient affect BZW06-23BH's breakdown voltage stability?

The BZW06-23BH has a VBR temperature coefficient of +0.096%/°C, meaning its breakdown voltage increases by 0.096% per degree Celsius rise above 25°C. At 125°C, VBR rises ~9.6%, shifting from 27V nominal to ~29.6V. This positive drift ensures safe margin expansion under high-temperature operation and prevents premature clamping during warm-up. Designers must account for this shift when setting system overvoltage thresholds relative to the BZW06-23BH's actual VBR at operating TJ.