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Taiwan Semiconductor Corporation BZW04-13
- Part No.:
- BZW04-13
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-13.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,377
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Product details
Overview
BZW04-13 from Taiwan Semiconductor is a unidirectional transient voltage suppressor diode (TVS) designed for primary overvoltage protection in DC power rails and signal lines. It features a 12.8 V working stand-off voltage (VWM), 14.3–15.8 V breakdown voltage (VBR) at 1 mA, 400 W peak pulse power (10/1000 μs), 21.2 V clamping voltage at 19.0 A peak current, and DO-204AL (DO-41) axial package - deployed in automotive lighting control modules to absorb load-dump transients.
For engineers reviewing the BZW04-13 datasheet, BZW04-13 pinout, BZW04-13 application, or BZW04-13 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, leakage current below 5 μA at VWM, thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
The BZW04-13 operates as a silicon avalanche diode with fast response time (<1 ns) and low dynamic impedance during surge events. Its unidirectional configuration provides reverse-biased clamping only, requiring correct polarity installation relative to the protected line's DC bias.
It complies with ANSI/IEEE C62.35 for transient suppression and delivers 400 W peak power handling at 25 °C, derated linearly above ambient temperature per Fig.2. Junction temperature range spans −55 °C to +175 °C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VBR @ IT=1 mA | 14.3–15.8 V - Voltage at which avalanche conduction begins; defines minimum clamping threshold |
| VC @ IPP=19.0 A | 21.2 V - Maximum voltage seen by protected circuit during 10/1000 μs surge; determines safe margin over IC absolute max rating |
| PPK | 400 W - Peak pulse power capability at 25 °C; defines transient energy absorption capacity |
| ID @ VWM | <5 μA - Reverse leakage at stand-off voltage; ensures minimal standby power loss and signal integrity |
| TJ max | +175 °C - Maximum junction temperature; enables operation in high-ambient under-hood locations |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on PCB; informs heatsinking requirements for repetitive surges |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return / ground reference | Connected to lower-potential side of protected line; completes clamping path during reverse surge |
| Cathode | Protected line input | Connected to positive rail or signal line; avalanche conduction initiates when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | BZW04-13H variant meets stress test requirements for automotive electronics including temperature cycling, HTRB, and ESD |
| Low clamping ratio (VC/VBR ≈ 1.4) | Ensures tight voltage limiting - critical for protecting 12 V system ICs with 24 V absolute maximum ratings |
| Ultra-low leakage (<5 μA @ VWM) | Prevents battery drain in always-on vehicle modules and avoids false triggering in high-impedance sensor interfaces |
| 400 W surge rating (10/1000 μs) | Withstands ISO 7637-2 Pulse 1 (−150 V/50 Ω) and Pulse 5a (load dump up to 60 V) without degradation |
Applications
| Automotive Lighting Control | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFET gate drivers in headlamp control units subjected to load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Primary clamping element placed between 12 V supply rail and ground, activated within nanoseconds upon overvoltage detection. Use Value: Limits rail voltage to ≤21.2 V during 19 A surge, preserving gate oxide integrity and preventing latch-up in downstream logic. | Use Scenario: Safeguarding digital input terminals of programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Standoff protector across input optocoupler anode-cathode, shunting surge energy before it reaches isolation barrier. Use Value: Maintains <5 μA leakage at 24 V nominal, ensuring clean logic-level recognition while clamping 400 W spikes without thermal runaway. |
| Automotive Body Control Module | DC Power Supply Input Stage |
Use Scenario: Overvoltage protection for microcontroller power pins in door module ECUs where alternator regulation faults may cause 30+ V excursions. IC Role / Device Role / Timing Role: Secondary rail clamp after LC filter, positioned adjacent to LDO input to reduce transient propagation delay. Use Value: Withstands repeated 10/1000 μs pulses up to 400 W, enabling compliance with ISO 16750-2 supply voltage variation tests. | Use Scenario: Front-end surge suppression in 12 V wall adapters and PoE-powered devices facing lightning-induced surges on AC/DC input lines. IC Role / Device Role / Timing Role: First-line defense in series with fuse and common-mode choke, absorbing differential-mode transients before rectification. Use Value: 100 °C/W RθJA allows direct mounting on PCB without heatsink, reducing BOM count and board space in cost-sensitive consumer designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A | DO-214AA package (SMB), 13 V VWM, 21.5 V VC @ 19.1 A, 600 W PPK | Higher power rating but larger footprint; requires PCB layout change | Select when higher surge margin is needed and board space permits SMB package |
| P6KE13A | DO-15 package, 13 V VWM, 21.2 V VC @ 19.0 A, 600 W PPK, slower response (~5 ns) | Same clamping performance but higher junction capacitance (150 pF vs. ~50 pF); unsuitable for high-speed data lines | Choose for cost-sensitive industrial supplies where speed is not critical and DO-15 is legacy-favored |
Compared with SMBJ13A and P6KE13A, the BZW04-13 offers identical clamping voltage and leakage but in the smaller DO-41 axial form factor - ideal for space-constrained through-hole designs requiring AEC-Q101-compliant variants (BZW04-13H) without rework.
Availability
BZW04-13 is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, and body control module designs requiring stable component supply, long-term lifecycle support, and traceable sourcing for production ramp.
Supply support for BZW04-13 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q101 qualification capabilities.
The BZW04 series was developed specifically for robust transient suppression in 12 V and 24 V automotive and industrial systems, emphasizing low clamping ratio, high surge endurance, and extended temperature operation.
FAQ
What is the maximum clamping voltage of the BZW04-13 during a standard 10/1000 μs surge event?
The BZW04-13 clamps to a maximum of 21.2 V when subjected to its rated peak impulse current of 19.0 A under the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the worst-case voltage imposed on the protected circuit during surge conditions - a critical parameter for verifying margin against downstream IC absolute maximum ratings. The BZW04-13 maintains this clamping performance across its full operating temperature range.
Is the BZW04-13 suitable for bidirectional transient protection?
No, the BZW04-13 is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown voltage and clamping behavior - are specified only for reverse-biased conduction. For bidirectional protection, the BZW04-13B variant must be used. Using the BZW04-13 in a bidirectional configuration risks failure during positive-going transients, as it lacks symmetrical avalanche characteristics. Always verify polarity marking and schematic placement for the BZW04-13.
Does the BZW04-13 meet automotive reliability standards?
The base BZW04-13 is not AEC-Q101 qualified; however, the BZW04-13H variant is explicitly certified to AEC-Q101 for stress testing including temperature cycling, high-temperature reverse bias, and ESD. Automotive designs requiring qualification must specify the "H" suffix. The BZW04-13H shares identical electrical parameters with the BZW04-13 but undergoes additional screening and traceability controls - confirming suitability for under-hood and body-control applications where the BZW04-13H is the compliant choice.
What is the thermal resistance of the BZW04-13 in typical PCB mounting conditions?
The BZW04-13 exhibits a junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on a standard FR-4 PCB with 10 mm lead length, per manufacturer test conditions. This value assumes no added copper pour or heatsinking. For repetitive surge applications, designers must calculate junction temperature rise using PD = 1 W (steady-state rating) and confirm TJ remains below 175 °C. The BZW04-13's RθJL of 60 °C/W supports conservative thermal design when leads are soldered to large copper planes.
How does the leakage current of the BZW04-13 compare to similar TVS diodes at its working voltage?
The BZW04-13 specifies reverse leakage current (ID) of ≤5 μA at its 12.8 V working stand-off voltage (VWM), measured at 25 °C. This is significantly lower than many legacy TVS diodes in the same voltage class - for example, the P6KE13A specifies ≤100 μA at 13 V. That ultra-low leakage makes the BZW04-13 especially suitable for battery-backed systems and high-impedance sensor interfaces where standby current must be minimized. The BZW04-13 maintains this performance across its full −55 °C to +175 °C operating range.
BZW04-13 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):
- 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)
BZW04-13 FAQ
1.How can I place an order for BZW04-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-13 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 BZW04-13 reliable?
The price and inventory of BZW04-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-13 is usually 5 days.
3.What payment methods are accepted for BZW04-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-13?
BZW04-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-13 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 BZW04-13?
For technical support, including BZW04-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-13 requirements.
6.How does Aetrix verify that BZW04-13 is sourced from the original manufacturer or authorized distributors?
All BZW04-13 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 BZW04-13 meets industry standards.
7.What is the process for return or replacement of BZW04-13?
All BZW04-13 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-13, 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 BZW04-13 part is unused and in its original packaging.
Return procedure for BZW04-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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