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Taiwan Semiconductor Corporation BZW06-188B
- Part No.:
- BZW06-188B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-188B.pdf
- Description:
- TVS DIODE 188VWM 388VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,713
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Product details
Overview
BZW06-188B from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode with a working stand-off voltage of 188 V, breakdown voltage range 209–231 V at 1 mA, and clamping voltage of 301 V at 2.0 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 BZW06-188B datasheet, BZW06-188B pinout, BZW06-188B application, or BZW06-188B 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 10/1000 µs waveform clamping performance under IEC 61000-4-5 compliance testing.
Technical Context
The BZW06-188B operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 209–231 V breakdown threshold, diverting transients to ground while clamping the protected line to ≤301 V. Its fast response time (<1.0 ps from 0 V to VBR) ensures protection against ESD and electrical fast transients before sensitive downstream circuitry is damaged.
Designed for single-pulse, non-repetitive surge events, it delivers 600 W peak pulse power at TA = 25 °C with derating above ambient, supported by RθJL = 60 °C/W and RθJA = 100 °C/W thermal metrics. The device uses pure tin-plated leads compliant with J-STD-002 and meets JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR @ 1 mA | 209–231 V - Confirmed avalanche onset range; ensures reliable triggering above system nominal rail |
| VC @ 2.0 A (10/1000 µs) | 301 V - Clamped voltage during standardized surge; defines maximum stress on protected IC |
| PPK | 600 W - Peak pulse power handling per IEC 61000-4-5 Level 4 surge test conditions |
| TJ max | +175 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| IR @ VWM | <1 µA - Negligible leakage current preserves standby power integrity in always-on systems |
| RθJL | 60 °C/W - Supports thermal management via PCB copper pour or heatsinking to lead frame |
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 ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Ground reference | Connected to system ground or low-side return path; carries surge current to earth |
| Cathode | Reverse-biased input / Protected line connection | Connected to the line being protected (e.g., 24 V rail); blocks normal operation, conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring reliability under thermal cycling and vibration |
| 600 W peak pulse rating (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) without degradation |
| Clamping voltage ≤301 V at 2.0 A | Ensures downstream 3.3 V/5 V logic interfaces remain within absolute maximum ratings during transient events |
| Low dynamic impedance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving protection margin |
| RoHS & halogen-free | Complies with EU RoHS Directive 2011/65/EU and IEC 61249-2-21 for environmentally constrained industrial and automotive supply chains |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power lines in vehicle ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp surges before they reach DC-DC converters and CAN transceivers. Use Value: Maintains system uptime by preventing latch-up or burnout of 24 V input stage components during 12 V/24 V battery system transients. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Standoff protection on 24 V dry-contact inputs, absorbing energy from relay coil de-energization spikes. Use Value: Eliminates need for external snubbers or varistors, reducing BOM count while meeting IEC 61000-4-4 EFT immunity requirements. |
| LED Driver Overvoltage Clamp | Telecom Line Interface Protection |
Use Scenario: Securing constant-current LED drivers in streetlighting systems against lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary-level TVS on bridge rectifier output, clamping transients before bulk capacitor and controller IC. Use Value: Extends driver lifetime by limiting peak voltage stress on electrolytic capacitors and MOSFET gate oxides during 10/1000 µs surges. | Use Scenario: Protecting RS-485 transceivers in outdoor telecom cabinets subjected to induced surges on long data lines. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; BZW06-188B used in unidirectional configuration on VCC rail feeding isolated RS-485 power supply. Use Value: Prevents damage to isolated DC-DC converter ICs during common-mode surges, preserving signal integrity and isolation barrier integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ188A | Same VWM (188 V), lower PPK (600 W → 600 W), but SMB package (DO-214AA) vs. DO-15; higher RθJA (110 °C/W) | Surface-mount layout required; less suitable for through-hole industrial power supplies with manual assembly | Select SMBJ188A only if board space constraints mandate SMD and thermal design accommodates reduced heat dissipation |
| P6KE188A | Same VWM (188 V), same DO-15 package, but lower PPK (600 W → 600 W), identical clamping (301 V), no AEC-Q101 qualification | Lacks automotive qualification; acceptable for commercial/industrial use where AEC-Q101 is not mandated | Choose P6KE188A for cost-sensitive non-automotive designs where qualification documentation is not required |
Compared with SMBJ188A and P6KE188A, the BZW06-188B uniquely combines AEC-Q101 qualification, DO-15 through-hole compatibility, and verified 600 W clamping performance-making it the preferred choice for automotive and high-reliability industrial applications requiring traceable qualification and legacy-compatible assembly.
Availability
BZW06-188B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC input protection, and LED driver overvoltage clamp applications requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-188B 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power devices since 1979.
The BZW06 series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 reliability, tight parameter distribution, and robust thermal performance in legacy DO-15 packaging.
FAQ
What is the polarity configuration of the BZW06-188B?
The BZW06-188B is a unidirectional TVS diode, marked with a cathode band indicating the cathode terminal. It conducts in reverse bias during overvoltage events and blocks forward current up to its rated VF. This polarity configuration makes the BZW06-188B suitable for DC power rail protection where surge direction is known and consistent, such as 24 V automotive supply lines. Its unidirectional behavior distinguishes it from bidirectional variants like BZW06-188B's sibling part numbers.
Does the BZW06-188B meet AEC-Q101 qualification?
Yes, the BZW06-188B is explicitly AEC-Q101 qualified, as confirmed in the official Taiwan Semiconductor datasheet (Version K2105). This qualification covers stress tests including temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-validating its suitability for automotive electronic control units, body electronics, and powertrain subsystems. The "H" suffix in alternate ordering codes (e.g., BZW06-188BH) denotes AEC-Q101 compliance, and the BZW06-188B itself carries this qualification per product family specification.
What is the clamping voltage of the BZW06-188B at 2.0 A (10/1000 µs)?
The clamping voltage of the BZW06-188B is 301 V at a peak pulse current of 2.0 A with a 10/1000 µs waveform, as specified in the manufacturer's electrical characteristics table. This value represents the maximum voltage that will appear across the protected line during a standardized surge event, directly determining the voltage stress imposed on downstream components. Engineers use this figure to verify that connected ICs and passive components remain within their absolute maximum ratings during transient conditions.
Can the BZW06-188B be used in bidirectional signal line protection?
No, the BZW06-188B is a unidirectional TVS diode and is not suitable for bidirectional signal line protection such as RS-485 or USB data lines. Its design clamps only in reverse bias and conducts forward current like a standard diode, which would short a bidirectional signal path. For such applications, a dedicated bidirectional TVS like BZW06-188BB (if offered) or an alternative series such as SMAJ or SMCJ with symmetrical breakdown must be selected. The BZW06-188B's role is strictly unidirectional rail protection.
What is the maximum junction temperature rating for the BZW06-188B?
The BZW06-188B has a maximum junction temperature (TJ) rating of +175 °C, as stated in the Absolute Maximum Ratings table. This high thermal limit enables reliable operation in under-hood automotive environments, industrial motor drives, and other high-ambient-temperature applications. When designing thermal relief, engineers should reference its junction-to-lead thermal resistance (RθJL = 60 °C/W) and ensure sufficient copper area or heatsinking to maintain TJ below 175 °C under worst-case surge duty cycles.
BZW06-188B 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):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 388V
- Current - Peak Pulse (10/1000µs):
- 10.3A (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)
BZW06-188B FAQ
1.How can I place an order for BZW06-188B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-188B 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 BZW06-188B reliable?
The price and inventory of BZW06-188B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-188B is usually 5 days.
3.What payment methods are accepted for BZW06-188B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-188B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-188B?
BZW06-188B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-188B 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 BZW06-188B?
For technical support, including BZW06-188B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-188B requirements.
6.How does Aetrix verify that BZW06-188B is sourced from the original manufacturer or authorized distributors?
All BZW06-188B 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 BZW06-188B meets industry standards.
7.What is the process for return or replacement of BZW06-188B?
All BZW06-188B units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-188B, 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 BZW06-188B part is unused and in its original packaging.
Return procedure for BZW06-188B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-188B Tags
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