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Taiwan Semiconductor Corporation BZW06-85BH
- Part No.:
- BZW06-85BH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-85BH.pdf
- Description:
- 600W, 100V, -%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:6,941
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Product details
Overview
BZW06-85BH from Taiwan Semiconductor is a unidirectional 600W Transient Voltage Suppressor (TVS) diode with a working stand-off voltage of 85.5 V, breakdown voltage range of 95–105 V at 1 mA, and clamping voltage of 137 V at 4.4 A (10/1000 μs). It features low dynamic impedance, <1 μA reverse leakage above 10 V, and AEC-Q101 qualification for automotive-grade surge protection in power supply rails and interface lines.
For engineers reviewing the BZW06-85BH datasheet, BZW06-85BH pinout, BZW06-85BH application, or BZW06-85BH equivalent, key selection criteria include its DO-204AC (DO-15) package, unidirectional polarity, 175°C max junction temperature, and compliance with ESD/EFT immunity standards per IEC 61000-4-2/4-4.
Technical Context
The BZW06-85BH operates as a unidirectional avalanche diode, triggered when transient voltage exceeds its 95 V minimum breakdown threshold. Its clamping action limits downstream voltage to ≤137 V under 4.4 A peak pulse current (10/1000 μs), delivering robust protection against inductive switching spikes and load dump events.
Thermal performance is defined by 60°C/W junction-to-lead and 100°C/W junction-to-ambient resistance. With a 0.084%/°C temperature coefficient on VBR and rated for -55°C to +175°C operation, it supports stable performance across automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85.5 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR (min/max) | 95 V / 105 V @ 1 mA - Ensures reliable turn-on margin above operating rail; guarantees clamping activation before system damage |
| VC @ IPPM | 137 V @ 4.4 A (10/1000 μs) - Limits transient overvoltage seen by protected ICs to safe levels during surge events |
| PPK | 600 W - Peak pulse power handling capacity defines survivability under standardized lightning/surge waveforms |
| TJ max | +175°C - Enables deployment in high-temperature automotive locations such as engine control units and body controllers |
| IR @ VWM | <1 μA - Negligible leakage ensures minimal standby power loss and no interference with high-impedance sensing circuits |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Compliant with UL 94V-0, JESD201 Class 2 whisker resistance, and RoHS/halogen-free requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; forms current sink during clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12 V rail); conducts avalanche current when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TC, and HTRB - enables direct integration into ASIL-B/C systems |
| Fast response time | <1.0 ps from 0 V to VBR - initiates clamping before most microsecond-scale transients propagate through PCB traces |
| Low dynamic impedance | Ensures minimal voltage overshoot during high di/dt events - critical for protecting fast-switching MOSFET gates and CAN transceivers |
| 600 W surge rating | Rated per 10/1000 μs waveform - meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 immunity requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients up to ±100 V. IC Role / Device Role: Primary clamping element placed between power input and upstream fuse or DC-DC converter. Use Value: Clamps 137 V at 4.4 A while maintaining <1 μA leakage - preserves system efficiency and prevents brownout during normal operation. | Use Scenario: Shielding analog sensor inputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role: Front-end TVS placed before signal conditioning amplifier or ADC input stage. Use Value: Sub-1 ps response ensures clamping occurs before transient energy couples into sensitive front-end circuitry. |
| LED Driver Overvoltage Protection | RS-485/422 Bus Line Protection |
Use Scenario: Safeguarding constant-current LED drivers in vehicle lighting modules from inductive kickback during switch-off. IC Role / Device Role: Parallel-connected TVS across driver output terminals to absorb flyback energy. Use Value: 600 W rating handles repetitive 8.3 ms half-sine surges up to 100 A - matches worst-case inductive energy in headlamp circuits. | Use Scenario: Protecting RS-485 transceivers in factory automation networks from EFT bursts and lightning-induced surges. IC Role / Device Role: Unidirectional TVS on each data line (A/B) referenced to ground. Use Value: 137 V clamping voltage aligns with common-mode immunity thresholds of ISO 11898-2 compliant transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A | Same DO-214AA package; lower PPK (600 W same), but higher VBR min (94.4 V) and VC (137 V identical); no AEC-Q101 listing | Not qualified for automotive under-hood use; suitable for industrial/commercial designs with less stringent reliability requirements | Select SMBJ85A only if AEC-Q101 is not mandated and board space allows DO-214AA footprint |
| P6SMB85A | Identical electrical specs and DO-214AA package; AEC-Q101 qualified; slightly higher IR (≤5 μA vs. ≤1 μA) | Same automotive application scope; minor leakage difference irrelevant in most power rail contexts | P6SMB85A offers drop-in replacement where DO-214AA layout exists and tighter leakage is not required |
Compared with BZW06-85BH, SMBJ85A lacks automotive qualification but fits commercial systems, while P6SMB85A matches AEC-Q101 compliance and electrical behavior closely - making it the strongest functional alternative when DO-214AA is acceptable.
Availability
BZW06-85BH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver overvoltage suppression requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-85BH 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, with global distribution and AEC-Q101 validation capabilities.
The BZW06 series targets high-reliability transient suppression in automotive and industrial systems, designed specifically to meet ISO 7637-2, IEC 61000-4-2/4-4, and AEC-Q101 stress test requirements.
FAQ
What is the polarity configuration of the BZW06-85BH?
The BZW06-85BH is a unidirectional TVS diode, with cathode marked by a band on the DO-204AC (DO-15) package. It conducts only when anode-to-cathode voltage exceeds its breakdown threshold, making it suitable for DC rail protection where polarity is fixed. This differs from bidirectional variants like BZW06-85B, which protect AC or differential signals.
Does the BZW06-85BH meet AEC-Q101 qualification?
Yes, the "H" suffix in BZW06-85BH explicitly denotes AEC-Q101 qualification per the manufacturer's ordering information. It has undergone stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for automotive under-hood applications.
What is the maximum clamping voltage of the BZW06-85BH under standard surge conditions?
The BZW06-85BH clamps to 137 V at 4.4 A under the 10/1000 μs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
Can the BZW06-85BH be used in place of a bidirectional TVS diode?
No - the BZW06-85BH is unidirectional and must not replace bidirectional types (e.g., BZW06-85B) in AC-coupled or differential signal paths. Using it in such applications risks failure during negative-going transients, as it cannot clamp below ground. Always match polarity type to system signal architecture.
What thermal derating applies to the BZW06-85BH at elevated ambient temperatures?
The BZW06-85BH's peak pulse power de-rates linearly above 25°C ambient, reaching ~50% of 600 W at 100°C and ~25% at 150°C per the pulse derating curve. Steady-state power dissipation is limited to 1.7 W at 75°C lead temperature, governed by RθJA = 100°C/W.
BZW06-85BH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- BZW06
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 85.5V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 4.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-85BH FAQ
1.How can I place an order for BZW06-85BH through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-85BH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BZW06-85BH reliable?
The price and inventory of BZW06-85BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-85BH is usually 5 days.
3.What payment methods are accepted for BZW06-85BH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-85BH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-85BH?
BZW06-85BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-85BH order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BZW06-85BH?
For technical support, including BZW06-85BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-85BH requirements.
6.How does Aetrix verify that BZW06-85BH is sourced from the original manufacturer or authorized distributors?
All BZW06-85BH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZW06-85BH meets industry standards.
7.What is the process for return or replacement of BZW06-85BH?
All BZW06-85BH units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-85BH, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BZW06-85BH part is unused and in its original packaging.
Return procedure for BZW06-85BH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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