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Taiwan Semiconductor Corporation BZW06-20B
- Part No.:
- BZW06-20B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-20B.pdf
- Description:
- TVS DIODE 20.5VWM 42.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,434
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Product details
Overview
BZW06-20B from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 600W peak pulse power at 10/1000μs, with 22.8V minimum breakdown voltage, 20.5V working stand-off voltage, and clamping voltage of 33.2V at 28.0A. It protects automotive and industrial power rails against ESD, EFT, and inductive switching transients.
For engineers reviewing the BZW06-20B datasheet, BZW06-20B pinout, BZW06-20B application, or BZW06-20B equivalent, key selection criteria include unidirectional/bidirectional polarity configuration, clamping ratio (VC/VBR ≈ 1.38), junction temperature range (–55°C to +175°C), thermal resistance (RθJA = 100°C/W), and AEC-Q101 qualification status.
Technical Context
The BZW06-20B operates as a silicon avalanche diode with bidirectional clamping action, triggered when reverse or forward transient voltage exceeds its symmetric breakdown threshold (22.8–25.2V). Its low dynamic impedance ensures stable clamping under fast-rising surges up to 100A IFSM.
Designed for high-reliability environments, it features <1μA reverse leakage at 20.5V, 0.094%/°C VBR temperature coefficient, and meets JESD201 Class 2 whisker resistance. Its DO-204AC package supports lead-free soldering per J-STD-002 and UL 94V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous DC or RMS operating voltage before clamping initiates |
| VBR (min/max) | 22.8 V / 25.2 V - Breakdown occurs within this range at 1 mA test current; defines surge trigger threshold |
| VC @ IPPM | 33.2 V @ 28.0 A - Clamped voltage during 10/1000μs surge; determines protected circuit's maximum stress level |
| PPK | 600 W - Peak pulse power handling capability; validates robustness against ISO 7637-2 Pulse 1/2/5a/b threats |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial locations |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs PCB copper area and heatsinking requirements |
| IR @ VWM | <1 μA - Reverse leakage at stand-off voltage; ensures minimal standby power loss in battery-critical systems |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional variants; BZW06-20B is bidirectional and lacks polarity marking - both leads are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as anode or cathode depending on transient polarity; no fixed orientation required in PCB layout |
| Lead 1 / Lead 2 | Current path terminals | Leads conduct surge current bidirectionally; must be routed with low-inductance traces to minimize clamping overshoot |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified variant available | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TCT, HAST, etc.) |
| Clamping voltage ratio VC/VBR | ~1.38 - Low ratio minimizes overvoltage exposure to downstream ICs during transient events |
| Response time | <5 ns for bidirectional mode - Ensures protection activation before sensitive logic or analog circuits are damaged |
| RoHS & halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS Directive - Supports green manufacturing and end-of-life recycling |
| Junction capacitance | ~200 pF @ 1 MHz (typical for BZW06-20B) - Low enough for 12V/24V power rail protection without signal integrity impact |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12V battery-supplied ECUs from load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of LDOs, CAN transceivers, and microcontrollers. Use Value: Limits transient voltage to ≤33.2V, preventing latch-up or gate oxide damage in 3.3V/5V logic powered from buck converters. | Use Scenario: Safeguarding 24V digital input modules in programmable logic controllers against field-wiring EFT bursts. IC Role / Device Role / Timing Role: Front-end TVS on dry-contact or PNP/NPN sensor inputs subject to relay coil flyback and cable coupling. Use Value: Absorbs 600W surges without degradation, maintaining input threshold stability across >100,000 switching cycles. |
| LED Driver Surge Suppression | Smart Meter AC/DC Supply Protection |
Use Scenario: Shielding constant-current LED drivers from inductive kickback when driving solenoid-based dimming circuits. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to clamp flyback spikes before they reach MOSFET drain or sense resistors. Use Value: Withstands repetitive 100A IFSM surges and maintains clamping performance after >1,000 pulses at rated PPK. | Use Scenario: Guarding metering SoCs and isolated power supplies in smart electricity meters against mains-borne surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Secondary-stage TVS on DC bus after bridge rectifier and bulk capacitor, complementing MOV primary protection. Use Value: Provides precise 20.5V stand-off with low leakage (<1μA), avoiding unnecessary loading of low-power auxiliary supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA (Bourns) | Same DO-214AA package; 20V VWM, 32.4V VC @ 29.1A; slightly lower PPK (600W same), higher RθJA (110°C/W) | Widely used in telecom power; less common in automotive due to non-AEC-Q101 standard grade | Select if DO-214AA footprint preferred and AEC-Q101 not required; verify thermal margin with RθJA difference |
| P6SMB20CA (Littelfuse) | DO-214AA package; 20V VWM, 32.4V VC @ 29.1A; identical electrical specs but AEC-Q101 option requires suffix "-Q" | Requires explicit ordering of AEC-Q101 version; standard part lacks automotive qualification documentation | Choose only with "-Q" suffix for automotive use; otherwise matches BZW06-20B performance in industrial settings |
Compared with SMBJ20CA and P6SMB20CA, the BZW06-20B offers native DO-204AC (DO-15) through-hole compatibility, lower thermal resistance (RθJA = 100°C/W vs. ≥110°C/W), and factory-AEC-Q101 availability without suffix modification - simplifying qualification for under-hood designs.
Availability
BZW06-20B is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input stages, LED driver flyback suppression, and smart meter DC bus safeguarding requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-20B 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 high-power transient suppression product line, engineered specifically for harsh-environment automotive and industrial applications where reliability under repeated surge stress and extended temperature operation are critical.
FAQ
What is the polarity configuration of BZW06-20B?
The BZW06-20B is a bidirectional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients. Unlike unidirectional variants (e.g., BZW06-20), it has no cathode band marking and functions identically regardless of terminal orientation in the circuit. This makes BZW06-20B ideal for AC-coupled or floating signal lines where polarity reversal is possible. The BZW06-20B datasheet confirms bidirectional VBR min/max values are identical for both directions.
Does BZW06-20B meet AEC-Q101 qualification?
The base BZW06-20B part number is not automatically AEC-Q101 qualified; qualification applies only to versions marked with the "H" suffix (e.g., BZW06-20BH). Per TSC's ordering information, "H" denotes AEC-Q101 compliance, including stress testing for temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. Always specify BZW06-20BH for automotive applications requiring formal qualification - the BZW06-20B alone does not carry that certification.
What is the maximum surge current BZW06-20B can handle at 10/1000μs?
At the standard 10/1000μs waveform, BZW06-20B clamps at 33.2V when subjected to a peak pulse current of 28.0A - derived directly from its 600W peak pulse power rating (PPK = VC × IPPM → 600W ÷ 33.2V ≈ 28.0A). This value is confirmed in the "Clamping Voltage @ IPPM (10/1000μs)" column of the BZW06 series electrical characteristics table. Exceeding 28.0A risks exceeding safe operating area limits unless derated per ambient temperature.
How does BZW06-20B compare to BZW06-20 in terms of electrical performance?
BZW06-20B and BZW06-20 share identical key parameters - same VWM (20.5V), VBR range (22.8–25.2V), VC (33.2V @ 28.0A), and PPK (600W) - but differ in polarity: BZW06-20 is unidirectional (cathode-banded), while BZW06-20B is bidirectional (no band). Their thermal and mechanical specs are identical. Therefore, BZW06-20B replaces BZW06-20 only when bidirectional protection is required; substituting without verifying circuit polarity may cause functional failure.
What is the junction-to-ambient thermal resistance (RθJA) for BZW06-20B in standard mounting?
The junction-to-ambient thermal resistance (RθJA) for BZW06-20B is 100°C/W under standard test conditions: 10mm lead length, free-air convection, no PCB copper pour. This value is specified in the Thermal Performance section of the BZW06 series datasheet. When mounted on a PCB with 1-inch² 2oz copper pad connected to both leads, RθJA improves significantly - but the 100°C/W rating must be used for worst-case thermal design unless measured or simulated with actual layout.
BZW06-20B 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 42.8V
- Current - Peak Pulse (10/1000µs):
- 93A (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)
BZW06-20B FAQ
1.How can I place an order for BZW06-20B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-20B 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 BZW06-20B reliable?
The price and inventory of BZW06-20B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-20B is usually 5 days.
3.What payment methods are accepted for BZW06-20B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-20B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-20B?
BZW06-20B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-20B 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 BZW06-20B?
For technical support, including BZW06-20B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-20B requirements.
6.How does Aetrix verify that BZW06-20B is sourced from the original manufacturer or authorized distributors?
All BZW06-20B 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 BZW06-20B meets industry standards.
7.What is the process for return or replacement of BZW06-20B?
All BZW06-20B units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-20B, 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 BZW06-20B part is unused and in its original packaging.
Return procedure for BZW06-20B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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