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Taiwan Semiconductor Corporation BZW06-128B
- Part No.:
- BZW06-128B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-128B.pdf
- Description:
- TVS DIODE 128VWM 265VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,292
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Product details
Overview
BZW06-128B from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode with a 128V working stand-off voltage, 143–158V breakdown range at 1mA, and 207V clamping voltage at 2.9A (10/1000μs). It features low dynamic impedance, <1μA leakage above 10V, and AEC-Q101 qualification for automotive-grade surge protection in power supply rails and I/O interfaces.
For engineers reviewing the BZW06-128B datasheet, BZW06-128B pinout, BZW06-128B application, or BZW06-128B equivalent, key selection criteria include its DO-204AC (DO-15) package, 175°C max junction temperature, 60°C/W junction-to-lead thermal resistance, and verified clamping performance under 10/1000μs transients - critical for ESD and load-dump immunity design validation.
Technical Context
The BZW06-128B operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its VBR (143–158V), clamping transient energy to 207V at 2.9A. Its fast response (<1.0ps from 0V to VBR) ensures protection of downstream ICs before damage thresholds are breached.
Designed for single-pulse surge suppression per IEC 61000-4-5 and ISO 7637-2, it delivers 600W peak pulse power at TA = 25°C with thermal derating to 1.7W steady-state dissipation at TL = 75°C. Junction-to-ambient thermal resistance is 100°C/W with 10mm lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1mA | 143–158 V - Breakdown voltage range defining reliable avalanche initiation threshold |
| VCL @ IPPM=2.9A (10/1000μs) | 207 V - Clamped voltage during standard surge event; determines protected circuit's maximum stress level |
| PPK | 600 W - Peak pulse power handling capability under non-repetitive 10/1000μs waveform |
| TJ MAX | +175 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance; critical for PCB trace heat sinking design |
| IR @ VWM | <1 μA - Reverse leakage current ensuring minimal standby power loss and signal integrity |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Lead finish: pure tin, solderable per J-STD-002; weight ≈ 0.400g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Ground reference | Connected to system ground or low-side return path; defines current flow direction during clamping |
| Cathode | Reverse-biased input / Surge input node | Connected to protected line (e.g., 12V rail); avalanche conduction occurs when voltage exceeds VBR relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under temperature cycling and vibration |
| 600W surge rating (10/1000μs) | Withstands ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 3a/b (ESD-induced transients) without degradation |
| Clamping voltage ≤207V at 2.9A | Ensures protected 12V/24V logic or analog circuits remain below absolute maximum ratings during surge events |
| Low dynamic impedance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for sensitive microcontrollers and CAN transceivers |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained industrial and automotive production |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients on 12V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp spikes up to ±120V. Use Value: Prevents latch-up or gate oxide rupture in buck controllers by limiting rail voltage to ≤207V during 600W surges. | Use Scenario: Shielding 4–20mA current-loop sensor inputs from EFT bursts in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; BZW06-128B serves as unidirectional clamp from signal line to local ground. Use Value: Maintains loop accuracy with <1μA leakage at 128V, avoiding offset errors while surviving 5kV EFT (IEC 61000-4-4). |
| LED Driver Overvoltage Clamp | Telecom Line Card Surge Suppression |
Use Scenario: Protecting constant-current LED drivers against inductive kickback from relay-controlled loads. IC Role / Device Role / Timing Role: Mounted across driver output to absorb flyback energy during switch-off. Use Value: Limits voltage excursion to 207V, preventing MOSFET drain-source breakdown and enabling use of lower-voltage, cost-optimized FETs. | Use Scenario: Front-end protection of PoE-powered Ethernet PHYs against lightning-induced surges on RJ45 lines. IC Role / Device Role / Timing Role: Paired with gas discharge tube (GDT) in hybrid protection network; BZW06-128B handles fast-rising components. Use Value: Sub-1ps response captures initial surge edge before GDT fires, reducing let-through energy to <10mJ at PHY input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ128A | Same DO-214AA package; 128V VWM but 219V VCL @ 2.7A (10/1000μs); higher clamping voltage | Less effective for tight-margin 12V systems where 207V clamping is required | Select BZW06-128B when lower clamping voltage is mandatory for protecting 13.5V-rated ICs |
| P6SMB128A | DO-214AA package; identical VWM/VBR specs but 220V VCL @ 2.7A; 600W rating same | Higher thermal resistance (RθJA ≈ 120°C/W vs. 100°C/W) limits high-temperature operation | Prefer BZW06-128B in under-hood applications >105°C ambient due to superior thermal performance |
Compared with SMBJ128A and P6SMB128A, the BZW06-128B offers the lowest clamping voltage (207V) and best thermal resistance (60°C/W junction-to-lead), making it optimal for space-constrained, high-reliability automotive and industrial designs where voltage margin and thermal management are critical.
Availability
BZW06-128B is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver overvoltage clamping requiring stable component supply and AEC-Q101 compliance.
Supply support for BZW06-128B 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 thyristors, with global distribution and AEC-Q101 certification capabilities.
The BZW06 series was developed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing robustness, low clamping voltage, and thermal stability in axial-leaded packages.
FAQ
What is the polarity configuration of the BZW06-128B?
The BZW06-128B is a unidirectional TVS diode, with cathode marked by a band on the DO-204AC (DO-15) package. It conducts in reverse bias during overvoltage events and blocks forward current like a standard rectifier. This polarity enables precise placement between a protected line and ground, and distinguishes it from bidirectional variants such as BZW06-128B's counterpart BZW06-128 - which lacks the "B" suffix and is bidirectional. Always verify marking orientation before PCB layout.
Is the BZW06-128B AEC-Q101 qualified?
Yes, the BZW06-128B is explicitly AEC-Q101 qualified, as confirmed in the official Taiwan Semiconductor datasheet (Version K2105). This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for automotive powertrain and chassis applications. The "H" suffix in alternate ordering codes (e.g., BZW06-128BH) denotes AEC-Q101 compliance, but the base BZW06-128B part number itself carries this qualification per manufacturer documentation.
What is the maximum peak pulse current the BZW06-128B can handle?
The BZW06-128B supports a maximum peak pulse current (IPPM) of 2.9A under the 10/1000μs waveform, corresponding to its 600W peak pulse power rating. At the alternate 8/20μs waveform, it handles 15A with a clamping voltage of 265V. These values are measured at TA = 25°C and assume proper PCB copper area for thermal dissipation; derating applies above 25°C ambient per the published pulse derating curve in the BZW06 series datasheet.
How does the BZW06-128B compare to the BZW06-128 (non-B) variant?
The BZW06-128B is unidirectional, whereas BZW06-128 (without "B") is bidirectional. Their VWM, VBR, and clamping specifications are identical, but polarity differs: BZW06-128B has a cathode band and blocks forward current, while BZW06-128 conducts symmetrically in both directions. Select BZW06-128B for DC rail protection where polarity is fixed; choose BZW06-128 only for AC-coupled or floating signal lines requiring symmetrical clamping.
What is the junction-to-ambient thermal resistance (RθJA) for the BZW06-128B?
The junction-to-ambient thermal resistance (RθJA) for the BZW06-128B is 100°C/W when mounted with 10mm lead length, per the manufacturer's thermal performance table. This value assumes standard JEDEC test conditions and is critical for calculating safe operating temperature rise under sustained surge duty cycles. For improved thermal performance, designers may use wider PCB copper pours or shorter leads - though RθJL remains fixed at 60°C/W regardless of layout.
BZW06-128B 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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 265V
- Current - Peak Pulse (10/1000µs):
- 15A (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)
BZW06-128B FAQ
1.How can I place an order for BZW06-128B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-128B 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 BZW06-128B reliable?
The price and inventory of BZW06-128B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-128B is usually 5 days.
3.What payment methods are accepted for BZW06-128B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-128B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-128B?
BZW06-128B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-128B 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 BZW06-128B?
For technical support, including BZW06-128B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-128B requirements.
6.How does Aetrix verify that BZW06-128B is sourced from the original manufacturer or authorized distributors?
All BZW06-128B 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 BZW06-128B meets industry standards.
7.What is the process for return or replacement of BZW06-128B?
All BZW06-128B units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-128B, 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 BZW06-128B part is unused and in its original packaging.
Return procedure for BZW06-128B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-128B Tags
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