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Taiwan Semiconductor Corporation BZW04-15
- Part No.:
- BZW04-15
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-15.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,916
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Product details
Overview
BZW04-15 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 15.3V working stand-off voltage, 17.1–18.9V breakdown voltage at 1mA, and 25.2V maximum clamping voltage at 16.0A peak current. It protects automotive and industrial power rails against ESD and inductive switching transients.
For engineers reviewing the BZW04-15 datasheet, BZW04-15 pinout, BZW04-15 application, or BZW04-15 equivalent, key selection criteria include clamping voltage margin relative to system rail, leakage current below 1μA at 15.3V, thermal resistance (RθJA = 100°C/W), and AEC-Q101 qualification availability in the BZW04-15B variant.
Technical Context
The BZW04-15 operates as a silicon avalanche diode, triggering when reverse voltage exceeds its 17.1–18.9V breakdown range, clamping transients to ≤25.2V at 16.0A. Its low dynamic impedance ensures effective suppression of fast-rising EFT and lightning-induced surges.
Designed for unidirectional protection only, it features a cathode band marking, pure tin-plated leads compliant with J-STD-002, and a junction-to-ambient thermal resistance of 100°C/W on standard PCB layout - critical for sustained surge handling in automotive body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.3 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR @ IT=1mA | 17.1–18.9 V - Avalanche breakdown threshold defining turn-on precision |
| VC @ IPP=16.0A | 25.2 V - Clamped voltage during 400W 10/1000μs surge, limiting downstream stress |
| IPP (max) | 16.0 A - Peak impulse current capability at rated clamping voltage |
| ID @ VWM | <1 μA - Ultra-low leakage preserves battery-powered circuit standby integrity |
| TJ max | +175°C - Enables under-hood deployment without derating in automotive environments |
| RθJA | 100 °C/W - Thermal performance baseline for PCB copper pad layout design |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94V-0; polarity indicated by cathode band (unidirectional only); weight ≈0.300g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; defines forward conduction direction |
| Cathode | Protected line terminal | Connected to protected signal/power rail; avalanche conduction occurs when cathode-to-anode voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse power rating | Supports IEC 61000-4-5 Level 4 (4kV) surge immunity without external series impedance |
| Clamping ratio VC/VBR ≈ 1.44 | Ensures tight overvoltage margin for 12V automotive systems (e.g., 13.5–15.0V nominal rails) |
| Typical IR <1 μA above 10V | Minimizes quiescent power loss in always-on vehicle networks (CAN, LIN, wake-up circuits) |
| AEC-Q101 qualified variant available (BZW04-15B) | Validated for automotive temperature cycling, humidity, and mechanical shock per stress test requirements |
| DO-41 package with JESD201 Class 2 whisker resistance | Enables reliable wave/solder reflow assembly in high-volume automotive PCB manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary TVS clamp on main input rail, placed upstream of DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤25.2V, preventing latch-up or gate oxide damage in 3.3V/5V logic powered from buck regulators. | Use Scenario: 4–20mA current loop transmitters interfacing with PLC analog inputs in factory automation. IC Role / Device Role / Timing Role: Bidirectional protection (using BZW04-15B variant) across loop terminals against ESD and field wiring faults. Use Value: Maintains <1μA leakage at 24V loop supply, avoiding measurement error while surviving ±8kV contact ESD (IEC 61000-4-2). |
| LED Driver Overvoltage Clamp | Smart Meter Surge Immunity |
Use Scenario: Constant-current LED drivers in street lighting subjected to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional TVS across driver output to absorb 10/1000μs transients exceeding LED forward voltage. Use Value: Clamps to 25.2V within nanoseconds, protecting MOSFET switches and current-sense resistors without affecting PWM dimming fidelity. | Use Scenario: Electricity meters deployed on utility poles experiencing fast transients from grid switching and indirect lightning coupling. IC Role / Device Role / Timing Role: Input-stage TVS on AC sensing front-end, coordinated with MOV and gas discharge tube in multi-stage protection network. Use Value: Provides precise 15.3V stand-off with 25.2V clamping, enabling tighter coordination with downstream crowbar circuits and reducing let-through energy to metering ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A (Diodes Inc.) | Same DO-214AA package; 15V VWM, 24.4V VC @ 16.3A; lower RθJA (65°C/W) but no AEC-Q101 option | Preferred for space-constrained consumer electronics; less suitable for under-hood automotive due to qualification gap | Select SMBJ15A when board area is limited and AEC-Q101 is not required; verify thermal layout supports higher power density. |
| P6KE15A (ON Semiconductor) | DO-15 package; 15V VWM, 24.4V VC @ 16.3A; 600W rating but larger footprint and higher RθJA (125°C/W) | Better for high-energy surges where PCB real estate allows; lacks AEC-Q101 and JESD201 whisker compliance | Choose P6KE15A only if legacy DO-15 footprint compatibility is mandatory and surge energy exceeds 400W requirements. |
Compared with SMBJ15A and P6KE15A, the BZW04-15 offers optimized thermal performance for DO-41 layouts, AEC-Q101 qualification in the B variant, and tighter clamping ratio - making it the preferred choice for new automotive and industrial designs requiring validated reliability and compact axial packaging.
Availability
BZW04-15 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, LED driver overvoltage clamping, and smart meter surge immunity requiring stable component supply across extended production lifecycles.
Supply support for BZW04-15 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 for automotive, industrial, and consumer markets.
The BZW04 series was designed specifically for high-reliability transient suppression in harsh environments - emphasizing low clamping voltage, AEC-Q101 qualification, and robust thermal performance in standard axial packages.
FAQ
What is the maximum clamping voltage of the BZW04-15 under a 10/1000μs surge?
The BZW04-15 has a maximum clamping voltage (VC) of 25.2 V when subjected to a 16.0 A peak pulse current with a 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The BZW04-15 maintains this clamping performance across its full operating temperature range.
Is the BZW04-15 suitable for bidirectional transient protection?
No - the BZW04-15 is a unidirectional TVS diode, intended for DC rail protection where polarity is fixed. For bidirectional applications (e.g., AC lines or data buses), the BZW04-15B variant must be used. The BZW04-15 itself lacks symmetrical breakdown characteristics and will conduct heavily in forward bias beyond ~1V, making it unsuitable for alternating polarity transients.
Does the BZW04-15 meet AEC-Q101 reliability standards?
The base BZW04-15 is not AEC-Q101 qualified; however, the BZW04-15B variant is explicitly certified to AEC-Q101. This qualification covers temperature cycling, high-temperature operating life, and mechanical shock testing required for automotive under-hood deployment. Always specify the "B" suffix when AEC-Q101 compliance is mandatory for your BZW04-15 design.
What is the reverse leakage current specification for the BZW04-15 at its working voltage?
The BZW04-15 exhibits a maximum reverse leakage current (ID) of 1 μA when biased at its rated working stand-off voltage of 15.3 V. This ultra-low leakage is confirmed at TA = 25°C and supports energy-sensitive applications such as battery-backed sensors and always-on automotive modules where standby current must remain minimal.
How does the thermal performance of the BZW04-15 compare to similar DO-41 TVS diodes?
The BZW04-15 has a junction-to-ambient thermal resistance (RθJA) of 100°C/W on standard PCB layout - matching industry benchmarks for DO-204AL packaged TVS diodes. Its junction-to-lead resistance (RθJL) is 60°C/W, enabling effective heat transfer to copper traces. This thermal profile allows sustained operation up to +175°C junction temperature, exceeding most competing DO-41 TVS devices rated only to +150°C.
BZW04-15 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):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
BZW04-15 FAQ
1.How can I place an order for BZW04-15 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-15 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 BZW04-15 reliable?
The price and inventory of BZW04-15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-15 is usually 5 days.
3.What payment methods are accepted for BZW04-15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-15?
BZW04-15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-15 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 BZW04-15?
For technical support, including BZW04-15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-15 requirements.
6.How does Aetrix verify that BZW04-15 is sourced from the original manufacturer or authorized distributors?
All BZW04-15 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 BZW04-15 meets industry standards.
7.What is the process for return or replacement of BZW04-15?
All BZW04-15 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-15, 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 BZW04-15 part is unused and in its original packaging.
Return procedure for BZW04-15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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