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Taiwan Semiconductor Corporation BZW04-13B
- Part No.:
- BZW04-13B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-13B.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,353
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Product details
Overview
BZW04-13B from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in DO-15 package, designed for IEC 61000-4-2 ESD and IEC 61000-4-4 surge protection. It features a standoff voltage (VRM) of 13 V, clamping voltage (VCL) of 21.2 V at 19.8 A (10/1000 µs), dynamic resistance (RD) of 0.17 Ω, and peak pulse power rating of 400 W. It operates up to 175 °C junction temperature and is used in AC/DC power input stages and telecom line interfaces.
For engineers reviewing the BZW04-13B datasheet, BZW04-13B pinout, BZW04-13B application, or BZW04-13B equivalent, key selection criteria include clamping performance at 10/1000 µs, low dynamic resistance for fast energy diversion, bidirectional polarity for symmetrical surge handling, and DO-15 thermal robustness in high-reliability industrial power supplies.
Technical Context
The BZW04-13B employs planar junction technology enabling low leakage current (<1 µA at VRM = 13 V, 25 °C) and stable VBR drift over temperature (αT = 5.7 × 10⁻⁴ /°C). Its bidirectional structure provides symmetrical clamping in both polarities without external circuitry.
It meets IEC 61000-4-2 level 4 (±30 kV air/contact discharge) and IEC 61000-4-4 level 4 (±4 kV), with thermal impedance (Zth(j-a)) of ~100 °C/W for single-pulse conditions on FR4 PCB - critical for sustained surge duty in SMPS front-end protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 13 V - maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage (VBR) | 14.4–16.0 V at 1 mA - precise threshold for controlled avalanche turn-on |
| Clamping Voltage (VCL) | 21.2 V at 19.8 A (10/1000 µs) - limits downstream voltage during surge events |
| Peak Pulse Power (PPP) | 400 W (10/1000 µs) - sustains repeated surges without degradation at Tamb = 25 °C |
| Dynamic Resistance (RD) | 0.17 Ω - ensures low voltage overshoot under high di/dt transients |
| Junction Temperature Range | −55 °C to +175 °C - supports operation in harsh environments including industrial motor drives |
| ESD Withstand (IEC 61000-4-2) | ±30 kV contact/air discharge - exceeds level 4 for robust system-level immunity |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with matte tin-plated leads. Body length: 6.05–6.75 mm; lead diameter: 0.71–0.88 mm; overall length: 26–31 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Cathode Band Side) | Surge return path (bidirectional) | Terminal where current flows during negative polarity transients; marked by cathode band |
| Cathode (Cathode Band Side) | Surge return path (bidirectional) | Terminal where current flows during positive polarity transients; same physical terminal as anode due to symmetrical construction |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated for continuous use up to Tj = 175 °C - enables placement near hot components in compact power designs |
| Low dynamic resistance | RD = 0.17 Ω - minimizes clamping voltage rise under fast-rising surges (e.g., lightning-induced) |
| Planar junction construction | Enables <1 µA IR at VRM - reduces standby power loss and improves long-term reliability in always-on systems |
| Bidirectional symmetry | VBR matching ≤ ±5% between polarities - eliminates need for polarity-aware layout in AC-coupled lines |
Applications
| Industrial AC/DC Power Input | Telecom Line Interface |
|---|---|
|
Use Scenario: Protection of rectifier bridge inputs against lightning-induced surges and switching transients in DIN-rail power supplies. IC Role / Device Role / Timing Role: Primary surge shunt device placed across AC input terminals before EMI filter. Use Value: Clamps 400 W surges to ≤21.2 V while maintaining <1 µA leakage - prevents rectifier overstress without affecting no-load efficiency. |
Use Scenario: Surge protection on POTS or xDSL line cards exposed to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Bidirectional clamping element connected between tip/ring and ground in hybrid transformer interface. Use Value: Symmetrical ±30 kV ESD tolerance and 21.2 V clamping enable compliance with GR-1089-CORE without additional polarity control circuitry. |
| Automotive Body Control Module (BCM) Inputs | Smart Meter AC Mains Interface |
|
Use Scenario: Protection of 12 V battery-fed sensor inputs subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary TVS stage after primary GDT or polymer PTC, located close to connector. Use Value: 175 °C rated junction temperature allows mounting in engine bay enclosures without derating. |
Use Scenario: Mains-side transient suppression in Class 0.5S electricity meters certified to IEC 62053-21 and EN 50470-3. IC Role / Device Role / Timing Role: First-line protector across L-N and L/N-PE in meter's isolation barrier input stage. Use Value: UL 497B listing (QVGQ2.E136224) and 400 W 10/1000 µs rating support certification for revenue-grade metering equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA | DO-214AA package; higher VCL = 23.2 V at 17.3 A; RD = 0.22 Ω | Surface-mount only; requires larger PCB area for thermal relief; lower power density than DO-15 axial | Preferred when automated SMT assembly is required and board space permits thermal pad design |
| P6KE13CA | DO-15 package; lower PPP = 600 W (but only at 1.5 ms pulse); VCL = 22.5 V at 26.7 A; RD = 0.25 Ω | Legacy part with wider VBR tolerance (10–15%); not qualified to IEC 61000-4-2 level 4 | Acceptable for cost-sensitive non-certified applications where ±30 kV ESD is not mandated |
Compared with SMBJ13CA and P6KE13CA, BZW04-13B delivers tighter VBR tolerance (±5%), lower RD for superior clamping, and full IEC 61000-4-2 level 4 qualification - making it optimal for new industrial and metering designs requiring regulatory compliance and thermal margin.
Availability
BZW04-13B is available at Aetrix Electronics and suitable for industrial AC/DC power input protection, telecom line interface hardening, automotive BCM inputs, and smart meter mains interfaces requiring stable component supply and long-term lifecycle continuity.
Supply support for BZW04-13B 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.
BZW04-13B belongs to ST's high-reliability TVS diode portfolio targeting robust surge immunity in harsh-environment power systems - engineered for stability at 175 °C and compliance with IEC/UL safety standards.
FAQ
What is the maximum clamping voltage of BZW04-13B under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 21.2 V at 19.8 A for a 10/1000 µs waveform, measured at Tamb = 25 °C. This value increases linearly with junction temperature per αT = 5.7 × 10⁻⁴ /°C, reaching ~23.1 V at Tj = 125 °C.
Is BZW04-13B suitable for bidirectional AC line protection?
Yes - BZW04-13B is a bidirectional TVS diode with symmetrical VBR and VCL characteristics in both polarities. Its DO-15 axial package and 13 V VRM make it appropriate for clamping surges across AC mains inputs, telecom tip/ring pairs, and other balanced signal paths.
How does BZW04-13B compare to older P6KE series in terms of ESD performance?
BZW04-13B exceeds IEC 61000-4-2 level 4 with ±30 kV contact and air discharge ratings, whereas P6KE13CA is not specified for ESD testing. Its lower dynamic resistance (0.17 Ω vs. 0.25 Ω) and tighter VBR tolerance also yield more predictable clamping behavior in ESD-prone applications.
What is the recommended PCB layout for optimal thermal performance?
For best thermal performance, mount BZW04-13B with ≥2 cm² copper area under each lead on FR4 (70 µm Cu), achieving Rth(j-a) ≈ 2.5 °C/W. Avoid narrow traces; use thermal reliefs only if soldering constraints require them. Do not place near heat sources exceeding 125 °C ambient.
BZW04-13B 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 19A
- 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)
BZW04-13B FAQ
1.How can I place an order for BZW04-13B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-13B 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 BZW04-13B reliable?
The price and inventory of BZW04-13B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-13B is usually 5 days.
3.What payment methods are accepted for BZW04-13B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-13B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-13B?
BZW04-13B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-13B 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 BZW04-13B?
For technical support, including BZW04-13B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-13B requirements.
6.How does Aetrix verify that BZW04-13B is sourced from the original manufacturer or authorized distributors?
All BZW04-13B 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 BZW04-13B meets industry standards.
7.What is the process for return or replacement of BZW04-13B?
All BZW04-13B units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-13B, 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 BZW04-13B part is unused and in its original packaging.
Return procedure for BZW04-13B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-13B Tags
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