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Taiwan Semiconductor Corporation BZW04-102
- Part No.:
- BZW04-102
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-102.pdf
- Description:
- TVS DIODE 102VWM 165VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,958
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Product details
Overview
BZW04-102 from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor diode designed for high-energy surge protection in automotive and industrial power rails. It features a 102V working stand-off voltage, 114–126V breakdown voltage at 1mA test current, 165V maximum clamping voltage at 2.4A peak impulse current, and operates across –55°C to +175°C junction temperature range - deployed in ECU power input stages to absorb ISO 7637-2 pulse 1/2a transients.
For engineers reviewing the BZW04-102 datasheet, BZW04-102 pinout, BZW04-102 application, or BZW04-102 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, thermal derating above 25°C ambient, DO-41 lead-form compatibility with PCB layout constraints, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
The BZW04-102 functions as a silicon avalanche diode operating in reverse-biased breakdown during overvoltage events. Its low dynamic impedance ensures rapid voltage clamping under 10/1000μs surge waveforms, with typical reverse leakage <1μA at 102V and temperature coefficient of 0.107%/°C for VBR.
It is rated for 400W non-repetitive peak pulse power (Tp = 1ms), derates linearly above 25°C ambient per Fig.2, and supports steady-state dissipation up to 1W when mounted on 5×5 mm copper pads - requiring thermal consideration in high-duty-cycle transient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 102 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage. |
| VBR @ IT=1mA | 114–126 V - Breakdown voltage range defining turn-on threshold; ensures reliable conduction before downstream circuit damage. |
| VC @ IPP=2.4A | 165 V - Clamped voltage during 10/1000μs surge; determines maximum stress seen by protected load. |
| PPK | 400 W - Peak pulse power handling capability; defines survivability against standardized lightning/surge pulses. |
| TJ Range | –55°C to +175°C - Junction temperature operating range; enables deployment in under-hood automotive locations. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on PCB; informs heatsinking requirements for repeated surges. |
Pinout & Package
Package: DO-204AL (DO-41) - axial-leaded, glass-passivated, RoHS-compliant package with pure tin-plated leads solderable per J-STD-002; polarity marked by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal in unidirectional configuration | Connected to system ground or low-side return path; completes clamping loop during transient. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12V battery rail); avalanche conduction occurs from cathode to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | Enables direct use in automotive ECUs without additional qualification testing; BZW04-102H variant meets stress test requirements. |
| 400W peak pulse power (10/1000μs) | Withstands ISO 7637-2 Pulse 1 (–150V/50Ω) and Pulse 2a (–100V/2Ω) without failure in properly decoupled systems. |
| Clamping ratio VC/VBR ≈ 1.39 | Indicates efficient energy diversion - lower ratio reduces voltage overshoot stress on downstream regulators and microcontrollers. |
| Reverse leakage <1μA @ VWM | Minimizes standby power loss in always-on vehicle modules such as CAN gateway or body control units. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12V supply inputs of engine control units against load dump and alternator ripple transients. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC/DC converter input. Use Value: Limits transient voltage to ≤165V, preventing damage to 36V-rated input stages of buck controllers like TPS543B20. | Use Scenario: Safeguarding 24V digital input channels of programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role: Front-end TVS on isolated input optocoupler circuitry. Use Value: Absorbs 400W surges without degradation, maintaining signal integrity and enabling >100,000 cycle reliability per IEC 61000-4-4. |
| LED Driver Overvoltage Clamp | ESD-Sensitive Sensor Interface Protection |
Use Scenario: Securing constant-current LED driver ICs in commercial lighting fixtures subjected to AC line surges. IC Role / Device Role: Parallel-connected transient suppressor across driver input capacitor. Use Value: Clamps 1kV/0.5J surges to safe levels while adding <10pF junction capacitance - no impact on PWM dimming bandwidth. | Use Scenario: Shielding analog front-end of automotive cabin temperature sensors from ESD events per ISO 10605 (±25kV air discharge). IC Role / Device Role: Secondary-level protection after connector-level ferrite and primary TVS. Use Value: Sub-μA leakage preserves sensor offset accuracy; fast response (<1ns) prevents latch-up in precision op-amps like TSZ121. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A | Lower PPK (600W), same DO-214AA package, VC = 165V @ 3.2A - higher IPP but larger footprint | Requires PCB rework due to SMC/SMB package; better suited for board space-constrained designs with higher surge duty cycles | Select SMBJ100A only if 600W rating and surface-mount assembly are mandatory; BZW04-102 remains optimal for through-hole cost-sensitive automotive harness interfaces. |
| P6KE100A | Same DO-41 package, lower PPK (600W), VC = 165V @ 3.2A, but no AEC-Q101 option and higher leakage (5μA) | Lacks automotive qualification; suitable for industrial controls where qualification is not mandated | Choose P6KE100A for legacy industrial designs requiring drop-in replacement without AEC-Q101 compliance; BZW04-102 preferred where automotive reliability and low leakage are critical. |
Compared with SMBJ100A and P6KE100A, the BZW04-102 offers identical clamping performance in a proven DO-41 form factor with optional AEC-Q101 qualification and sub-μA leakage - making it the most balanced choice for new automotive and high-reliability industrial designs requiring through-hole mounting.
Availability
BZW04-102 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, LED lighting drivers, and ESD-sensitive sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZW04-102 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 - serving automotive, industrial, and consumer markets since 1979.
The BZW04 series is part of TSC's AEC-Q101-qualified transient voltage suppressor portfolio, engineered specifically for robust surge immunity in harsh automotive electrical environments and high-reliability industrial power systems.
FAQ
What is the maximum clamping voltage of the BZW04-102 under standard surge conditions?
The BZW04-102 has a maximum clamping voltage (VC) of 165 V when subjected to a 10/1000 μs waveform with a peak impulse current (IPP) of 2.4 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during surge events. The BZW04-102 maintains this clamping performance across its full operating temperature range, ensuring consistent protection in under-hood automotive applications.
Is the BZW04-102 available in an AEC-Q101 qualified version?
Yes, the BZW04-102H variant is AEC-Q101 qualified and explicitly listed in the ordering information section of the official datasheet. This qualification includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - confirming suitability for automotive powertrain and chassis applications. The standard BZW04-102 is not AEC-Q101 qualified unless ordered with the "H" suffix.
What is the reverse leakage current specification for the BZW04-102 at its working stand-off voltage?
The BZW04-102 exhibits a maximum reverse leakage current (ID) of 1 μA when biased at its rated working stand-off voltage (VWM) of 102 V and tested at 25°C ambient. This ultra-low leakage minimizes quiescent power loss in always-on systems such as automotive body control modules and contributes to long-term reliability in battery-powered industrial sensors.
Can the BZW04-102 be used in bidirectional configurations?
No - the BZW04-102 is a unidirectional device. For bidirectional protection, the designated part is BZW04-102B, which features symmetrical breakdown characteristics and dual avalanche structure. Using the unidirectional BZW04-102 in AC-coupled or floating signal paths may result in forward conduction during negative half-cycles and unintended circuit behavior.
What is the thermal resistance from junction to ambient for the BZW04-102 on a standard PCB layout?
The junction-to-ambient thermal resistance (RθJA) of the BZW04-102 is 100 °C/W when mounted on a printed circuit board with 10 mm lead lengths, per the datasheet's thermal performance table. This value assumes standard FR-4 substrate and no added copper pour; design margins should account for ambient temperature rise and surge repetition rate to avoid exceeding the 175°C maximum junction temperature.
BZW04-102 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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 2.4A
- 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)
BZW04-102 FAQ
1.How can I place an order for BZW04-102 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-102 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 BZW04-102 reliable?
The price and inventory of BZW04-102 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-102 is usually 5 days.
3.What payment methods are accepted for BZW04-102?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-102 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-102?
BZW04-102 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-102 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 BZW04-102?
For technical support, including BZW04-102 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-102 requirements.
6.How does Aetrix verify that BZW04-102 is sourced from the original manufacturer or authorized distributors?
All BZW04-102 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 BZW04-102 meets industry standards.
7.What is the process for return or replacement of BZW04-102?
All BZW04-102 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-102, 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 BZW04-102 part is unused and in its original packaging.
Return procedure for BZW04-102:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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