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Taiwan Semiconductor Corporation BZW04-23
- Part No.:
- BZW04-23
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-23.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,250
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Product details
Overview
BZW04-23 from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, rated for 400W peak pulse power at 10/1000μs, with 23.1V working stand-off voltage (VWM), 25.7–28.4V breakdown voltage (VBR), and 37.5V maximum clamping voltage (VC) at 10.7A peak impulse current - used for ESD and surge protection of automotive and industrial power rails.
For engineers reviewing the BZW04-23 datasheet, BZW04-23 pinout, BZW04-23 application, or BZW04-23 equivalent, this page delivers verified electrical parameters, thermal performance data, polarity marking details, AEC-Q101 qualification status, and real-world protection use cases aligned to IEC 61000-4-2/4-4/4-5 standards.
Technical Context
The BZW04-23 operates as a unidirectional avalanche diode with fast response time (<1 ns), low dynamic impedance, and junction-to-lead thermal resistance of 60°C/W. It clamps transients above 23.1V while maintaining <1 μA reverse leakage at VWM.
Designed for single-polarity DC line protection, it features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and meets JESD 201 Class 2 whisker resistance - enabling reliable soldering and long-term stability in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 23.1 V - Maximum continuous DC or RMS voltage the device blocks without conduction. |
| VBR min/max | 25.7 V / 28.4 V at 1 mA - Confirmed avalanche onset range defining turn-on threshold tolerance. |
| VC @ IPP | 37.5 V at 10.7 A - Clamped voltage during 400W 10/1000μs surge, limiting downstream IC stress. |
| PPK | 400 W - Peak non-repetitive surge power handling capability per ANSI/IEEE C62.35. |
| TJ max | +175 °C - Maximum junction temperature enabling operation in high-ambient automotive zones. |
| RθJL | 60 °C/W - Thermal resistance from junction to lead, critical for PCB copper pad layout design. |
| ID @ VWM | <1 μA - Reverse leakage ensuring minimal standby power loss in battery-critical systems. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, cathode band marked on one end for unidirectional polarity identification. Lead length 9.5 mm, weight ≈0.300 g, RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; defines forward bias direction and clamping polarity. |
| Cathode | High-side surge input terminal | Marked with band; accepts transient energy and routes clamped current to ground through anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
| 400W 10/1000μs surge rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation. |
| Clamping ratio VC/VBR = 1.39 | Low overvoltage margin ensures tight protection window for 24V system ICs (e.g., CAN transceivers). |
| 0.096 %/°C VBR tempco | Predictable voltage drift across -55°C to +175°C enables stable clamping in extreme environments. |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets automotive flammability safety requirements. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24V supply lines in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and LDO/regulator input. Use Value: Limits transient voltage to ≤37.5V, preventing damage to 40V-rated regulators and microcontrollers. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end suppression element before optocoupler or Schmitt trigger interface. Use Value: Absorbs >400W fast transients while maintaining sub-μA leakage for accurate low-level signal detection. |
| LED Driver Overvoltage Clamp | ESD Protection for Sensor Interfaces |
Use Scenario: Preventing overvoltage failure in constant-current LED drivers subjected to inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals. Use Value: Clamps flyback spikes within 1 ns, avoiding latch-up or gate oxide rupture in MOSFET switches. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from human-body-model ESD events. IC Role / Device Role / Timing Role: Localized TVS at connector entry point before signal conditioning amplifier. Use Value: Maintains <1 μA leakage at 23.1V, preserving DC accuracy while diverting 15 kV HBM strikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | DO-214AA package, 24V VWM, 38.9V VC @ 10.3A, 600W PPK rating | Higher surge rating but larger footprint; requires PCB re-layout | Select when higher 600W surge margin is required and board space permits SMB footprint. |
| P6KE27A | DO-15 package, 27V VWM, 41.4V VC @ 9.7A, 600W PPK, no AEC-Q101 qualification | Lacks automotive qualification; lower thermal reliability at TJ = 175°C | Acceptable for industrial non-automotive use where cost is prioritized over qualification compliance. |
Compared with SMBJ24A and P6KE27A, the BZW04-23 offers AEC-Q101 qualification in compact DO-41 form factor with optimized 37.5V clamping for 24V systems - making it the preferred choice for space-constrained automotive modules requiring certified reliability.
Availability
BZW04-23 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC input safeguarding, LED driver overvoltage clamping, and sensor interface ESD suppression requiring stable component supply and full traceability.
Supply support for BZW04-23 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 validation capability.
The BZW04 series was developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing low clamping ratio, high-temperature operation, and robust mechanical construction in legacy axial packages.
FAQ
What is the polarity configuration of the BZW04-23?
The BZW04-23 is a unidirectional TVS diode with clearly marked cathode band indicating the high-side terminal. When installed correctly, it conducts only during positive transients on the cathode relative to anode - essential for protecting 24V DC rails where reverse polarity must be blocked. The BZW04-23 does not conduct in reverse bias except during clamping events above VBR.
Is the BZW04-23 AEC-Q101 qualified?
Yes, the BZW04-23 is AEC-Q101 qualified when ordered with the "H" suffix (e.g., BZW04-23H). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness - confirming suitability for automotive under-hood applications. Standard BZW04-23 without "H" lacks formal AEC-Q101 certification.
What is the maximum clamping voltage of the BZW04-23 under surge conditions?
The BZW04-23 has a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak impulse current (IPP), measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events.
Can the BZW04-23 replace the BZW04-23B variant?
Yes, the BZW04-23 and BZW04-23B share identical electrical specifications, package (DO-204AL), and thermal ratings. The "B" suffix denotes bidirectional capability, but since the BZW04-23 is explicitly unidirectional and the datasheet lists them in separate rows with distinct VBR min/max values, direct substitution is not recommended unless circuit polarity and clamping symmetry requirements are confirmed.
What is the thermal resistance from junction to ambient for the BZW04-23?
The BZW04-23 has a junction-to-ambient thermal resistance (RθJA) of 100°C/W when mounted on a printed circuit board with 10 mm lead length. This value assumes standard FR-4 substrate and guides heatsinking decisions - for sustained surge duty cycles, derating per Fig.2 in the datasheet is required to maintain TJ ≤ 175°C.
BZW04-23 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- BZW04
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
BZW04-23 FAQ
1.How can I place an order for BZW04-23 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-23 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 BZW04-23 reliable?
The price and inventory of BZW04-23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-23 is usually 5 days.
3.What payment methods are accepted for BZW04-23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-23?
BZW04-23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-23 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 BZW04-23?
For technical support, including BZW04-23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-23 requirements.
6.How does Aetrix verify that BZW04-23 is sourced from the original manufacturer or authorized distributors?
All BZW04-23 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 BZW04-23 meets industry standards.
7.What is the process for return or replacement of BZW04-23?
All BZW04-23 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-23, 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 BZW04-23 part is unused and in its original packaging.
Return procedure for BZW04-23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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