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Taiwan Semiconductor Corporation BZW04-110B
- Part No.:
- BZW04-110B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-110B.pdf
- Description:
- TVS DIODE 111VWM 179VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,393
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Product details
Overview
BZW04-110B from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode with a 111V working stand-off voltage (VWM), 124–137V breakdown voltage (VBR) at 1mA, and 179V maximum clamping voltage (VC) at 2.2A peak pulse current. It delivers low-leakage protection (<1μA @ VWM) for automotive and industrial power rail surge immunity.
For engineers reviewing the BZW04-110B datasheet, BZW04-110B pinout, BZW04-110B application, or BZW04-110B equivalent, this page provides verified electrical parameters, DO-41 package details, AEC-Q101 qualification status, thermal resistance values, and real-world ESD/inductive load protection use cases - all confirmed for the exact BZW04-110B variant.
Technical Context
The BZW04-110B operates as a unidirectional avalanche diode, designed to clamp transient overvoltages above its VWM of 111V while maintaining sub-1μA reverse leakage below that threshold. Its 179V clamping voltage at 2.2A ensures predictable energy diversion during 10/1000μs surges.
With a junction-to-lead thermal resistance (RθJL) of 60°C/W and max operating temperature of +175°C, it supports high-reliability mounting on PCB copper pads per JESD201 Class 2 whisker testing. The device is rated for 400W non-repetitive peak pulse power and 1W steady-state dissipation at TL = 75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 111 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 12V–48V systems. |
| VBR @ IT=1mA | 124–137 V - Breakdown voltage range confirming tight manufacturing tolerance for reliable turn-on consistency. |
| VC @ IPP=2.2A | 179 V - Clamping voltage under standardized 10/1000μs surge; determines protected circuit's peak stress level. |
| PPK | 400 W - Peak pulse power rating at TA = 25°C; validates capability against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1 μA - Reverse leakage current ensuring minimal standby power loss and signal integrity in high-impedance nodes. |
| TJ max | +175 °C - Maximum junction temperature enabling operation in under-hood automotive or industrial enclosures. |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance supporting 1W steady-state dissipation with proper lead heatsinking. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Meets UL 94V-0 flammability and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground; forms low-impedance path for surge current return during clamping. |
| Cathode | Protected line terminal | Connected to the line being protected (e.g., 111V rail); avalanche conduction occurs when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per J2104 spec. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Ensures minimal overvoltage overshoot during transients - critical for protecting downstream MOSFETs and controllers. |
| Fast response time (<1 ps) | Enables suppression of ESD events (IEC 61000-4-2) and fast electrical fast transients (IEC 61000-4-4) before IC damage occurs. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated electronics manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 110V DC auxiliary power rails in commercial vehicle ECUs from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between rail and chassis ground to clamp transients exceeding 111V. Use Value: Limits peak voltage to ≤179V during 400W surges, preventing gate oxide rupture in downstream 200V MOSFETs and linear regulators. |
Use Scenario: Safeguarding 24–110V digital input modules in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protector on isolated input channel, absorbing repetitive 10/1000μs transients without degradation. Use Value: Maintains <1μA leakage at 111V, preserving high-impedance sensing accuracy while surviving >10,000 surge events per IEC 61000-4-5. |
| LED Driver Overvoltage Clamp | Telecom Line Interface Protection |
Use Scenario: Clamping voltage spikes on constant-current LED driver outputs during hot-plug or open-circuit faults. IC Role / Device Role / Timing Role: Parallel-connected unidirectional suppressor across output terminals to limit transient excursions. Use Value: 179V clamping ensures LED string and driver IC remain within absolute maximum ratings during 2.2A surge events. |
Use Scenario: Secondary-side protection on telecom power feed lines (e.g., -48V PSE) against lightning-induced surges. IC Role / Device Role / Timing Role: High-energy TVS placed after isolation transformer to absorb residual common-mode transients. Use Value: 400W peak power rating handles IEC 61000-4-5 Combination Wave (1.2/50μs + 8/20μs) surges up to Level 4 without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A | Same DO-214AA package; lower 100W PPK rating; VWM = 110V, VC = 177V @ 2.2A. | Limited to lower-energy surges; not AEC-Q101 qualified; unsuitable for automotive under-hood use. | Select only for cost-sensitive industrial controls where 400W surge immunity is not required. |
| 1.5KE110A | DO-201AD package; 1500W PPK; VWM = 94V, VC = 177V @ 6.4A; higher leakage (~5μA). | Higher surge capacity but looser VWM tolerance; larger footprint; less precise clamping for 111V rails. | Choose when legacy 1.5KE footprint compatibility is mandatory and 111V standoff precision is secondary. |
Compared with SMBJ110A and 1.5KE110A, the BZW04-110B uniquely combines AEC-Q101 qualification, 400W surge rating, 111V precise VWM, and DO-41 form factor - making it optimal for space-constrained, high-reliability 110V DC systems requiring validated automotive robustness.
Availability
BZW04-110B is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial PLC input conditioning, and LED driver overvoltage clamping requiring stable component supply and long-term lifecycle support.
Supply support for BZW04-110B 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.
The BZW04 series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 compliance, tight VBR tolerance, and robust thermal performance in compact DO-41 packages.
FAQ
What is the polarity configuration of the BZW04-110B?
The BZW04-110B is a unidirectional TVS diode with cathode band marking indicating the protected line terminal. Its anode connects to ground, and cathode connects to the 111V rail. This configuration enables precise clamping only during positive transients - essential for DC power rail protection where reverse voltage is not expected.
Is the BZW04-110B AEC-Q101 qualified?
Yes, the BZW04-110B is AEC-Q101 qualified when ordered with the "H" suffix (e.g., BZW04-110BH). The standard BZW04-110B part number corresponds to the non-AEC version. For automotive applications, specify BZW04-110BH to ensure full qualification including HTGB, TCT, and HTRB testing per J2104 revision.
What is the maximum clamping voltage of the BZW04-110B under surge conditions?
The BZW04-110B has a maximum clamping voltage (VC) of 179 V at a peak pulse current (IPP) of 2.2 A, tested per the 10/1000μs waveform. This value is guaranteed across the full operating temperature range and defines the highest voltage seen by downstream components during a standardized surge event.
Can the BZW04-110B be used in bidirectional configurations?
No - the BZW04-110B is strictly unidirectional. For bidirectional protection at ~110V, the correct variant is BZW04-110BB (note "BB" suffix). Using BZW04-110B in bidirectional circuits risks failure during negative transients, as it lacks symmetrical avalanche characteristics.
What is the thermal resistance specification for the BZW04-110B?
The BZW04-110B has a junction-to-lead thermal resistance (RθJL) of 60°C/W and a junction-to-ambient resistance (RθJA) of 100°C/W when mounted on 10mm leads. These values assume standard DO-41 PCB layout with 5×5 mm copper pads per lead - critical for sustaining 1W steady-state dissipation at TL = 75°C.
BZW04-110B 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):
- 111V
- Voltage - Breakdown (Min):
- 124V
- Voltage - Clamping (Max) @ Ipp:
- 179V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- 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)
BZW04-110B FAQ
1.How can I place an order for BZW04-110B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-110B 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 BZW04-110B reliable?
The price and inventory of BZW04-110B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-110B is usually 5 days.
3.What payment methods are accepted for BZW04-110B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-110B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-110B?
BZW04-110B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-110B 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 BZW04-110B?
For technical support, including BZW04-110B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-110B requirements.
6.How does Aetrix verify that BZW04-110B is sourced from the original manufacturer or authorized distributors?
All BZW04-110B 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 BZW04-110B meets industry standards.
7.What is the process for return or replacement of BZW04-110B?
All BZW04-110B units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-110B, 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 BZW04-110B part is unused and in its original packaging.
Return procedure for BZW04-110B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-110B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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