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Taiwan Semiconductor Corporation BZW06-28B
- Part No.:
- BZW06-28B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-28B.pdf
- Description:
- TVS DIODE 28.2VWM 59VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,292
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Product details
Overview
BZW06-28B from Taiwan Semiconductor is a bidirectional transient voltage suppressor diode (TVS) designed for high-energy surge protection in automotive and industrial power rails. It features a 31.4–34.7 V breakdown voltage (VBR), 28.2 V working stand-off voltage (VWM), 45.7 V clamping voltage at 13.1 A (10/1000 µs), 600 W peak pulse power, and DO-204AC (DO-15) package - deployed to safeguard CAN transceivers, microcontroller I/O, and DC-DC converter inputs against EFT and inductive switching transients.
For engineers reviewing the BZW06-28B datasheet, BZW06-28B pinout, BZW06-28B application, or BZW06-28B equivalent, key selection criteria include verified bidirectional clamping performance, AEC-Q101 qualification status, thermal derating behavior up to 175 °C junction temperature, and compatibility with lead-free reflow profiles per J-STD-002.
Technical Context
The BZW06-28B operates as a silicon avalanche diode with symmetrical bidirectional breakdown characteristics, enabling protection of AC-coupled or floating signal lines without polarity concerns. Its low dynamic impedance (<0.5 Ω typical during clamping) and sub-5 ns response time ensure rapid voltage limiting before downstream IC damage occurs.
It is rated for non-repetitive 10/1000 µs surges up to 600 W and supports steady-state dissipation of 1.7 W at 75 °C lead temperature. Junction-to-lead thermal resistance is 60 °C/W, supporting reliable operation under sustained transient stress when mounted on adequate copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.2 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for safe DC bias in protected circuit. |
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V @ 1 mA - Confirmed avalanche onset range; ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 45.7 V @ 13.1 A (10/1000 µs) - Clamped voltage seen by protected device during worst-case surge; defines maximum stress on downstream IC. |
| PPK | 600 W - Peak pulse power handling capability; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments and high-ambient industrial enclosures. |
| IR @ VWM | <1 µA - Reverse leakage current at rated stand-off voltage; minimizes quiescent power loss and avoids false triggering in high-impedance nodes. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Cathode band marking applies only to unidirectional variants; BZW06-28B is bidirectional and has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically due to bidirectional construction; connects across protected line and return (e.g., LIN bus, sensor supply, CAN H/L pair). |
| Leads (anode & cathode) | Thermal and electrical interface | Provide mechanical mounting and heat conduction path to PCB copper; require ≥10 mm lead length for rated 1.7 W steady-state dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, body electronics, and ADAS subsystems. |
| 600 W surge rating (10/1000 µs) | Withstands repeated ISO 7637-2 Pulse 5a transients (up to 450 V, 12 Ω source) without degradation when properly heatsinked. |
| Clamping voltage ≤45.7 V @ 13.1 A | Ensures protected 3.3 V or 5 V logic interfaces remain below absolute maximum ratings during surge events. |
| Response time <5 ns | Activates before most fast-rising EFT bursts (IEC 61000-4-4) propagate into sensitive analog or digital circuitry. |
Applications
| Automotive LIN Bus Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting LIN transceiver pins (e.g., TJA1020) from load dump and battery disconnect transients in vehicle door modules and seat controllers. IC Role / Device Role / Timing Role: Bidirectional TVS placed between LIN bus and ground, clamping both positive and negative excursions to prevent latch-up or oxide rupture in transceiver ESD structures. Use Value: Maintains LIN communication integrity during 100 V/50 ms load dump events while adding <1 pF parasitic capacitance to preserve signal edge rate. | Use Scenario: Shielding 4–20 mA current loop transmitter outputs from field-induced surges in factory automation systems with long cable runs. IC Role / Device Role / Timing Role: Placed across output terminals (IOUT and COM) to shunt induced common-mode energy before it reaches precision DAC or op-amp output stages. Use Value: Limits voltage excursion to ≤45.7 V during 1 kV/500 A IEC 61000-4-5 surges, preventing output stage saturation and maintaining loop accuracy within ±0.1%. |
| DC-DC Converter Input Protection | Microcontroller GPIO ESD Suppression |
Use Scenario: Safeguarding 24 V input stage of buck converters (e.g., LM5017) in railway signaling equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Connected between VIN and GND upstream of input filter capacitor to clamp transients before they stress MOSFET gate oxide or bootstrap circuitry. Use Value: Absorbs 600 W surge energy without failure, allowing downstream ceramic input capacitors to remain intact and converter startup sequence unaffected. | Use Scenario: Protecting STM32H7 GPIO pins connected to external buttons or LEDs in medical diagnostic devices requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to divert human-body-model (HBM) and system-level ESD strikes away from MCU I/O pad ESD diodes. Use Value: Low 1 µA leakage preserves battery life in portable units; fast <5 ns response prevents latch-up during 8 kV contact discharge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CA | Same DO-214AA package; 28 V nominal VWM, 45.4 V VC @ 13.2 A; lower 600 W rating but tighter VBR tolerance (±5%). | Preferred where board space is constrained (SMB vs DO-15); less suitable for high-temperature ambient (>125 °C) due to higher RθJA. | Select SMBJ28CA only if footprint reduction is critical and thermal margin allows. |
| P6SMB28CA | Identical electrical specs and DO-214AA package; manufactured by Vishay; RoHS/halogen-free compliant; same AEC-Q101 qualification available. | No functional difference; used interchangeably in Tier-1 automotive designs where dual-sourcing is mandated. | Choose P6SMB28CA for second-source assurance without design change or qualification retesting. |
Compared with SMBJ28CA and P6SMB28CA, the BZW06-28B offers identical clamping performance and AEC-Q101 qualification but uses the larger DO-15 package - delivering superior thermal mass and higher surge endurance in high-temperature environments, making it preferred for under-hood or enclosed industrial applications where airflow is limited.
Availability
BZW06-28B is available at Aetrix Electronics and suitable for automotive LIN bus protection, industrial 4–20 mA loop safeguarding, DC-DC converter input surge suppression, and microcontroller GPIO ESD hardening requiring stable component supply across multi-year production cycles.
Supply support for BZW06-28B 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and thyristors since 1979.
The BZW06 series belongs to TSC's AEC-Q101-qualified transient voltage suppressor portfolio, engineered specifically for robustness in automotive power distribution networks and industrial control systems subject to repetitive high-energy transients.
FAQ
What is the polarity configuration of the BZW06-28B?
The BZW06-28B is a bidirectional TVS diode with symmetrical anode–cathode structure - neither terminal is marked as cathode, and it functions identically in either orientation. This eliminates polarity concerns when protecting AC-coupled signals like CAN or LIN buses, unlike unidirectional variants such as BZW06-28 which require correct orientation relative to ground.
Is the BZW06-28B qualified for automotive applications?
Yes, the BZW06-28B is AEC-Q101 qualified when ordered with the "H" suffix (e.g., BZW06-28BH). The base part number BZW06-28B meets all electrical and mechanical requirements of the standard; qualification documentation and test reports are available upon request for automotive program validation.
What is the maximum clamping voltage of the BZW06-28B under a 10/1000 µs surge?
The BZW06-28B clamps to 45.7 V at a peak pulse current of 13.1 A under the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and forms the basis for determining whether downstream components remain within their absolute maximum voltage ratings during surge events.
How does the BZW06-28B compare to the unidirectional BZW06-28 in terms of electrical performance?
The BZW06-28B and BZW06-28 share identical VBR, VWM, VC, and PPK specifications, but differ in polarity: BZW06-28B is bidirectional (no cathode band), while BZW06-28 is unidirectional (cathode band marked). Both use the same DO-204AC package and thermal performance, but BZW06-28 requires correct orientation to protect only negative-going transients.
What is the thermal resistance profile of the BZW06-28B?
The BZW06-28B has a junction-to-lead thermal resistance (RθJL) of 60 °C/W and junction-to-ambient resistance (RθJA) of 100 °C/W with 10 mm lead length. These values enable 1.7 W steady-state dissipation at 75 °C lead temperature and inform PCB copper area requirements for sustained surge duty cycles in sealed enclosures.
BZW06-28B 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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 68A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-28B FAQ
1.How can I place an order for BZW06-28B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-28B 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 BZW06-28B reliable?
The price and inventory of BZW06-28B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-28B is usually 5 days.
3.What payment methods are accepted for BZW06-28B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-28B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-28B?
BZW06-28B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-28B 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 BZW06-28B?
For technical support, including BZW06-28B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-28B requirements.
6.How does Aetrix verify that BZW06-28B is sourced from the original manufacturer or authorized distributors?
All BZW06-28B 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 BZW06-28B meets industry standards.
7.What is the process for return or replacement of BZW06-28B?
All BZW06-28B units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-28B, 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 BZW06-28B part is unused and in its original packaging.
Return procedure for BZW06-28B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-28B Tags
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