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Taiwan Semiconductor Corporation BZW06-256BH
- Part No.:
- BZW06-256BH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-256BH.pdf
- Description:
- 600W, 300V, -%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:6,936
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Product details
Overview
BZW06-256BH from Taiwan Semiconductor is a unidirectional 600W Transient Voltage Suppressor (TVS) diode with a 256V working stand-off voltage, 300V nominal breakdown voltage (VBR), and 414V clamping voltage at 1.6A (10/1000μs). It features AEC-Q101 qualification, low dynamic impedance, and sub-1ps response time, designed for automotive-grade ESD and inductive switching surge protection in power supply rails and signal lines.
For engineers reviewing the BZW06-256BH datasheet, BZW06-256BH pinout, BZW06-256BH application, or BZW06-256BH equivalent, key selection criteria include its DO-204AC (DO-15) package, unidirectional polarity, 175°C maximum junction temperature, and compliance with IEC 61249-2-21 halogen-free requirements - all critical for under-hood automotive electronics and industrial control systems.
Technical Context
The BZW06-256BH operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 300V nominal breakdown threshold (tested at 1mA), clamping transients to ≤414V at 1.6A peak pulse current. Its thermal design supports 175°C junction operation with RθJL = 60°C/W and RθJA = 100°C/W (L = 10mm).
It delivers 600W non-repetitive peak pulse power per 10/1000μs waveform, with <1μA reverse leakage at 256V and a temperature coefficient of 0.110%/°C for VBR. The device meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 256 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/typ/max) | 285 / 300 / 315 V @ 1 mA - Ensures reliable turn-on above system rail while avoiding false triggering |
| VC @ IPPM | 414 V @ 1.6 A (10/1000μs) - Limits downstream voltage stress during surge events |
| PPK | 600 W - Withstands high-energy transients common in automotive load-dump and ISO 7637-2 pulses |
| TJ max | 175 °C - Enables placement near hot components in engine control units and power converters |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package compatible with automated through-hole assembly |
Pinout & Package
DO-204AC (DO-15) package with axial leads: cathode marked by band; anode and cathode terminals only. Lead finish: pure tin, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; tied to ground or low-side reference in unidirectional TVS configuration | Provides return path for clamped surge current; must be routed with low-inductance connection to minimize overshoot |
| Cathode | Protected line connection; connected to the circuit node requiring transient suppression | Accepts transient energy and conducts it to anode when VREV > VBR; polarity marking ensures correct orientation on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain, body control, and ADAS modules per stress test requirements |
| 600W peak pulse power | Handles ISO 7637-2 Pulse 5a (load dump) up to 120V with margin, without degradation |
| Clamping voltage ≤414V @ 1.6A | Protects 300–350V-rated MOSFETs and gate drivers in DC-link and auxiliary power stages |
| Response time <1 ps | Engages before ESD or fast transients propagate into sensitive analog or communication ICs |
| Halogen-free & RoHS compliant | Meets automotive OEM material declarations (IMDS, MDX) and end-of-life recycling mandates |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Snubbing |
|---|---|
Use Scenario: Suppressing load-dump transients on 24V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp spikes up to 120V. Use Value: Prevents overvoltage failure of upstream DC-DC controllers and microcontrollers during alternator regulation loss. | Use Scenario: Protecting IGBT gate drivers from inductive kickback in HVAC blower inverters. IC Role / Device Role / Timing Role: Mounted across motor phase outputs to absorb flyback energy during PWM switching transitions. Use Value: Eliminates need for external RC snubbers, reducing BOM count and board space in compact drive modules. |
| LED Headlamp ESD Shielding | Industrial PLC Input Protection |
Use Scenario: Guarding constant-current LED driver ICs against human-body-model (HBM) ESD events during service access. IC Role / Device Role / Timing Role: Connected in parallel with LED string inputs to shunt 8kV contact discharge energy. Use Value: Maintains luminous output stability and avoids firmware lockup caused by latch-up in driver ICs. | Use Scenario: Securing 24V digital input channels on programmable logic controllers exposed to field wiring noise. IC Role / Device Role / Timing Role: Installed at terminal block interface to divert fast transients from optocoupler input stages. Use Value: Reduces spurious input toggling and improves immunity to electrical fast transients (IEC 61000-4-4). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ250A | Same DO-214AA package; 250V VWM, 278V VBR (min), 405V VC @ 1.5A - lower clamping but no AEC-Q101 rating | Targeted at industrial/commercial use; not validated for automotive temperature cycling or humidity testing | Select SMBJ250A only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
| 1.5KE250A | DO-201AD package; 250V VWM, 278V VBR, 413V VC @ 1.45A - identical clamping performance but higher RθJA (125°C/W) | Used in legacy power supplies; lacks halogen-free certification and JESD201 whisker compliance | Prefer 1.5KE250A only when DO-201AD footprint is fixed and thermal derating allows ambient >75°C operation |
Compared with SMBJ250A and 1.5KE250A, the BZW06-256BH provides AEC-Q101 validation, halogen-free construction, and superior thermal resistance (RθJL = 60°C/W), making it the sole choice for new automotive designs requiring long-term reliability under thermal and mechanical stress.
Availability
BZW06-256BH is available at Aetrix Electronics and suitable for automotive power management, industrial motor control, LED lighting systems, and programmable logic controller (PLC) input protection requiring stable component supply and AEC-Q101-compliant surge suppression.
Supply support for BZW06-256BH 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 ISO/TS 16949-certified production.
The BZW06 series was developed specifically for high-reliability automotive and industrial transient suppression, emphasizing robustness under repeated surge stress, wide temperature operation, and compliance with evolving OEM material and qualification standards.
FAQ
What is the polarity configuration of the BZW06-256BH?
The BZW06-256BH is a unidirectional TVS diode, with cathode indicated by a band on the DO-204AC (DO-15) package. It conducts only when reverse-biased beyond its 300V nominal breakdown voltage, making it suitable for DC rail protection where polarity is fixed. Bidirectional variants (e.g., BZW06-256BH's counterpart BZW06-256B) are separate part numbers and not interchangeable with BZW06-256BH.
Does the BZW06-256BH meet AEC-Q101 requirements?
Yes, the "H" suffix in BZW06-256BH explicitly denotes AEC-Q101 qualification. This includes stress testing for temperature cycling, high-temperature operating life, unbiased high-humidity bias, and mechanical shock - all verified per the AEC-Q101-004 standard. The BZW06-256BH is approved for use in automotive powertrain, chassis, and body electronics applications.
What is the maximum clamping voltage of the BZW06-256BH under standard test conditions?
The BZW06-256BH has a maximum clamping voltage (VC) of 414 V at 1.6 A peak pulse current using the 10/1000μs waveform. This value is guaranteed across the full operating temperature range (−55°C to +175°C) and defines the upper voltage limit imposed on protected circuitry during surge events.
Can the BZW06-256BH be used in bidirectional signal line protection?
No, the BZW06-256BH is unidirectional and unsuitable for AC or bidirectional signal lines. For such applications, the bidirectional variant BZW06-256BH is not valid - the correct part is BZW06-256B. Using BZW06-256BH on AC paths risks forward conduction during normal operation and failure to suppress negative transients.
What is the thermal resistance from junction to lead (RθJL) for the BZW06-256BH?
The BZW06-256BH has a typical junction-to-lead thermal resistance (RθJL) of 60°C/W, measured with standard 9.5mm lead length. This parameter enables accurate thermal modeling when mounted on PCBs with copper pour heatsinking or when used in high-power-density automotive modules where junction temperature must remain below 175°C.
BZW06-256BH 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):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- 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)
BZW06-256BH FAQ
1.How can I place an order for BZW06-256BH through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-256BH 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 BZW06-256BH reliable?
The price and inventory of BZW06-256BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-256BH is usually 5 days.
3.What payment methods are accepted for BZW06-256BH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-256BH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-256BH?
BZW06-256BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-256BH 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 BZW06-256BH?
For technical support, including BZW06-256BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-256BH requirements.
6.How does Aetrix verify that BZW06-256BH is sourced from the original manufacturer or authorized distributors?
All BZW06-256BH 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 BZW06-256BH meets industry standards.
7.What is the process for return or replacement of BZW06-256BH?
All BZW06-256BH units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-256BH, 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 BZW06-256BH part is unused and in its original packaging.
Return procedure for BZW06-256BH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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