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Taiwan Semiconductor Corporation BZW04-102B
- Part No.:
- BZW04-102B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-102B.pdf
- Description:
- TVS DIODE 102VWM 165VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,930
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Product details
Overview
BZW04-102B from Taiwan Semiconductor is a unidirectional transient voltage suppressor diode (TVS) designed for high-energy surge protection in DC power rails and signal lines. It features a 102 V working stand-off voltage, 114–126 V breakdown voltage at 1 mA test current, 165 V maximum clamping voltage at 2.4 A peak pulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - deployed in automotive lighting control, industrial sensor interfaces, and ESD-sensitive microcontroller I/O protection.
For engineers reviewing the BZW04-102B datasheet, BZW04-102B pinout, BZW04-102B application, or BZW04-102B equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, leakage current below 1 µA at 102 V, thermal derating above 25°C ambient, and DO-41 package compatibility with manual or wave-solder assembly processes.
Technical Context
The BZW04-102B operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its specified breakdown range. Its low dynamic impedance ensures rapid voltage clamping during transients, while its 60 °C/W junction-to-lead thermal resistance supports reliable power dissipation under pulsed stress.
It complies with ANSI/IEEE C62.35 for transient suppression and meets AEC-Q101 stress testing requirements when ordered with the "H" suffix - though BZW04-102B itself is not marked as AEC-Q101 qualified per ordering code documentation. The device exhibits a 0.107 %/°C temperature coefficient of VBR, enabling predictable voltage drift across its -55°C to +175°C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 102 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for safe DC bias operation. |
| VBR @ IT=1 mA | 114–126 V - Breakdown voltage tolerance band defining turn-on threshold under standardized test conditions. |
| VC @ IPP=2.4 A | 165 V - Clamped voltage during 10/1000 µs surge; must remain below protected circuit's damage threshold. |
| PPK | 400 W - Peak pulse power handling capability; determines survivability against IEC 61000-4-5 Level 4 surges. |
| IR @ VWM | <1 µA - Reverse leakage at stand-off voltage; ensures minimal standby power loss and signal integrity. |
| TJ Range | -55°C to +175°C - Junction temperature limits enabling use in under-hood automotive or industrial power supply environments. |
| RθJL | 60 °C/W - Thermal resistance from junction to lead; informs heatsinking needs for repetitive surge duty cycles. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or data line); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables robust protection against IEC 61000-4-5 combination wave surges up to 4 kV without failure. |
| <1 µA reverse leakage @ VWM | Minimizes quiescent current draw in battery-powered systems and avoids false triggering in high-impedance sensing nodes. |
| 165 V clamping voltage @ 2.4 A | Provides ≥20% margin below typical 200 V absolute max ratings of automotive-grade MCUs and CAN transceivers. |
| DO-41 package with UL 94V-0 molding | Supports automated through-hole insertion and reflow/wave soldering while meeting flammability safety standards. |
| 0.107 %/°C VBR tempco | Ensures stable clamping threshold across extended temperature ranges, critical for engine control unit (ECU) applications. |
Applications
| Automotive Lighting Control | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFET switches from load-dump transients in 12 V vehicle lighting circuits. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp voltage spikes exceeding 102 V. Use Value: Prevents latch-up or gate oxide rupture in driver ICs by limiting transient voltage to ≤165 V during 400 W surges. | Use Scenario: Shielding 4–20 mA current-loop transmitters from ESD and inductive switching noise in factory automation PLC modules. IC Role / Device Role / Timing Role: Standoff diode on analog input line, conducting only during >114 V transients to shunt energy to ground. Use Value: Maintains signal fidelity with <1 µA leakage at 102 V, avoiding offset errors in precision current measurement paths. |
| Microcontroller I/O Protection | Power Supply Rail Clamp |
Use Scenario: Safeguarding GPIO pins of automotive-grade MCUs against contact discharge ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100 pF at 0 V) placed directly at connector entry point. Use Value: Responds in sub-nanosecond time to divert >8 kV HBM ESD pulses while preserving signal rise time in digital control lines. | Use Scenario: Clamping 24 V DC power inputs in industrial HMIs exposed to relay coil flyback and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply rail, coordinated with upstream fuse and downstream LDO. Use Value: Absorbs 400 W transient energy without degradation, enabling single-stage protection architecture and reducing BOM count. |
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 | DO-214AA package; 100 V VWM, 111–123 V VBR, 165 V VC @ 2.43 A; 400 W rating | Surface-mount footprint requires PCB redesign; slightly tighter VBR tolerance but identical clamping performance | Select SMBJ100A for space-constrained designs where SMT assembly is preferred and thermal path to copper is optimized. |
| P6KE100A | DO-15 package; 100 V VWM, 111–123 V VBR, 165 V VC @ 2.43 A; 600 W rating (10/1000 µs) | Higher peak power rating but larger DO-15 body; 1.5× higher steady-state power dissipation limit (1.2 W vs. 1 W) | Choose P6KE100A when legacy through-hole layout allows larger footprint and higher repetitive surge duty is required. |
Compared with SMBJ100A and P6KE100A, the BZW04-102B offers identical clamping voltage and leakage but occupies the industry-standard DO-41 form factor - enabling direct replacement in existing through-hole designs without layout change, while delivering precise 102 V stand-off matching common 12 V system derating margins.
Availability
BZW04-102B is available at Aetrix Electronics and suitable for automotive lighting control, industrial sensor interface, and microcontroller I/O protection requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for BZW04-102B 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 for industrial, automotive, and consumer applications.
The BZW04 series was developed to deliver high-reliability, high-power transient suppression in standard axial packages - targeting cost-sensitive yet mission-critical applications where DO-41 compatibility, AEC-Q101 readiness, and tight parametric consistency are essential.
FAQ
What is the polarity configuration of the BZW04-102B?
The BZW04-102B is a unidirectional TVS diode, identified by a cathode band marking on the DO-41 package. It conducts in reverse bias during overvoltage events and blocks forward current like a standard rectifier. This polarity enables precise clamping on positive-going transients in DC power rails, and its behavior is confirmed in the "Unidirectional Bidirectional" column of the BZW04 series electrical characteristics table where BZW04-102B appears only under unidirectional entries.
Does the BZW04-102B meet AEC-Q101 qualification?
The BZW04-102B itself is not AEC-Q101 qualified; only variants with the "H" suffix (e.g., BZW04-102BH) are explicitly designated as AEC-Q101 compliant per the Ordering Information section. The base part number BZW04-102B lacks the "H" identifier and is intended for industrial and commercial applications where automotive stress testing is not mandated.
What is the maximum clamping voltage of the BZW04-102B and at what current is it specified?
The maximum clamping voltage of the BZW04-102B is 165 V, measured at a peak pulse current (IPP) of 2.4 A under the standard 10/1000 µs double-exponential waveform. This value is listed in the "Maximum clamping voltage VC@IPP" column of the BZW04 series electrical characteristics table for the BZW04-102B row, and defines the upper voltage limit imposed on protected circuits during surge events.
Can the BZW04-102B be used in bidirectional configurations?
No - the BZW04-102B is strictly unidirectional and not rated for bidirectional operation. The BZW04 series datasheet separates unidirectional and bidirectional variants into distinct part number suffixes (e.g., BZW04-102B vs. BZW04-102BB), and the BZW04-102B row appears exclusively in the unidirectional column with no corresponding bidirectional VBR or IPP values assigned to it.
What is the junction-to-ambient thermal resistance of the BZW04-102B in standard PCB mounting?
The junction-to-ambient thermal resistance (RθJA) of the BZW04-102B is 100 °C/W when mounted on a printed circuit board with 10 mm lead length, as specified in the Thermal Performance section. This value assumes standard FR-4 board material and moderate copper area; actual thermal performance improves with larger copper pads or thermal vias, and must be considered when evaluating repetitive surge duty cycles.
BZW04-102B 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:
- -
- Bidirectional Channels:
- 1
- 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)
BZW04-102B FAQ
1.How can I place an order for BZW04-102B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-102B 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 BZW04-102B reliable?
The price and inventory of BZW04-102B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-102B is usually 5 days.
3.What payment methods are accepted for BZW04-102B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-102B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-102B?
BZW04-102B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-102B 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 BZW04-102B?
For technical support, including BZW04-102B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-102B requirements.
6.How does Aetrix verify that BZW04-102B is sourced from the original manufacturer or authorized distributors?
All BZW04-102B 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 BZW04-102B meets industry standards.
7.What is the process for return or replacement of BZW04-102B?
All BZW04-102B units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-102B, 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 BZW04-102B part is unused and in its original packaging.
Return procedure for BZW04-102B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-102B Tags
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