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Taiwan Semiconductor Corporation BZW04-136B
- Part No.:
- BZW04-136B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-136B.pdf
- Description:
- TVS DIODE 136VWM 219VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,175
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Product details
Overview
BZW04-136B from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, rated for 400W peak pulse power at 10/1000μs waveform, with 136V working stand-off voltage (VWM), 152–168V breakdown voltage (VBR @ 1mA), and 219V maximum clamping voltage (VC @ 1.8A). It protects automotive and industrial power rails against ESD and inductive switching transients.
For engineers reviewing the BZW04-136B datasheet, BZW04-136B pinout, BZW04-136B application, or BZW04-136B equivalent, key selection criteria include clamping performance at 1.8A surge current, unidirectional polarity marking, DO-41 mechanical compatibility, and AEC-Q101 qualification status - critical for under-hood automotive electronics and industrial control I/O protection.
Technical Context
The BZW04-136B operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 152–168V breakdown range at 1mA test current. Its low dynamic impedance enables rapid clamping to ≤219V during 10/1000μs transients, limiting energy delivered to downstream circuitry.
Designed for single-polarity DC line protection, it features <1μA reverse leakage at 136V (VWM), 0.108%/°C VBR temperature coefficient, and junction-to-lead thermal resistance of 60°C/W - enabling reliable operation up to +175°C junction temperature in constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 136 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR @ 1mA | 152–168 V - Measured breakdown range at 1mA; ensures predictable turn-on threshold across temperature and lot. |
| VC @ IPP = 1.8A | 219 V - Clamped voltage during 10/1000μs surge; determines maximum stress on protected IC or MOSFET gate. |
| PPK | 400 W - Peak pulse power rating per 10/1000μs waveform; validates robustness against ISO 7637-2 Pulse 1/2a/5a transients. |
| TJ max | +175 °C - Maximum junction temperature; supports placement near hot components in engine control units or power supplies. |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance; enables thermal design using standard DO-41 pad layouts (5×5 mm copper). |
| ID @ VWM | ≤1 μA - Reverse leakage at rated stand-off voltage; minimizes standby power loss in battery-backed systems. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with cathode band marking for unidirectional polarity. 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 | Forward current path / low-side reference | Connected to ground or lower-potential node; forms return path during clamping. |
| Cathode | Protected line connection / high-side input | Connected to the line being protected (e.g., 136V supply rail); conducts when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for powertrain and body control modules. |
| 400W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (500V/2Ω) without degradation - suitable for 24V commercial vehicle battery line protection. |
| Clamping ratio VC/VBR ≈ 1.34 | Low ratio indicates high surge current handling efficiency; reduces voltage overshoot on sensitive 150V-rated MOSFETs or gate drivers. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; eliminates brominated flame retardants for safer rework and end-of-life processing. |
| 0.300g mass | Lightweight DO-41 form factor enables use in space-constrained modules where weight impacts mechanical mounting or vibration tolerance. |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 24V/48V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, clamping surges within 1ns response time. Use Value: Limits peak voltage to ≤219V during 400W transients, preventing damage to 200V-rated DC-DC controllers and CAN transceivers. |
Use Scenario: Shielding 24V digital input channels in programmable logic controllers from field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Standoff protector on input terminal block, absorbing ±4kV contact ESD per IEC 61000-4-2. Use Value: Maintains <1μA leakage at 24V nominal, ensuring clean logic thresholds while clamping fast transients below microcontroller I/O absolute max ratings. |
| LED Driver Overvoltage Clamp | Motor Drive Gate Protection |
Use Scenario: Safeguarding constant-current LED driver ICs in streetlight systems exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary clamping device on bulk capacitor rail, activated only during overvoltage events >136V. Use Value: Withstands 10/1000μs surges up to 1.8A without degradation, preserving driver lifetime in outdoor environments. |
Use Scenario: Protecting high-side N-channel MOSFET gates in H-bridge motor drivers from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100pF) unidirectional clamp referenced to gate drive IC ground. Use Value: Fast response (<1ns) and low VBR tolerance (±5%) ensure precise gate voltage limiting without interfering with PWM timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ130A | Same DO-214AA package; 130V VWM, 144–159V VBR, 219V VC @ 1.8A - slightly lower VWM but identical clamping voltage. | Higher thermal resistance (RθJA = 125°C/W vs. BZW04-136B's 100°C/W) limits high-ambient use. | Select SMBJ130A only if board layout uses SMC/SMB footprint; BZW04-136B preferred for axial DO-41 space or legacy through-hole designs. |
| P6KE150A | DO-15 package; 150V VWM, 167–185V VBR, 244V VC @ 1.6A - higher clamping voltage and lower surge rating (600W but derated faster above 25°C). | Larger DO-15 body increases PCB area; not AEC-Q101 qualified. | Choose P6KE150A only for cost-sensitive non-automotive applications where 244V clamping is acceptable and AEC-Q101 is not required. |
Compared with SMBJ130A and P6KE150A, the BZW04-136B delivers tighter VBR tolerance (±5% vs. ±7–10%), AEC-Q101 qualification, and superior thermal performance in axial DO-41 - making it optimal for automotive 24V/48V systems requiring long-term reliability under thermal stress.
Availability
BZW04-136B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC input protection, and LED driver overvoltage clamp applications requiring stable component supply and traceable sourcing.
Supply support for BZW04-136B 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, and rectifiers, with global distribution and AEC-Q101 validation capability.
The BZW04 series was designed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing tight parametric control, high-temperature operation, and robust surge endurance in axial packages.
FAQ
What is the polarity configuration of the BZW04-136B?
The BZW04-136B is a unidirectional TVS diode, marked with a cathode band indicating the cathode terminal. It conducts only when the cathode is at a higher potential than the anode - ideal for protecting positive DC rails. This polarity must be observed during PCB layout to ensure proper clamping behavior; reverse installation renders the device ineffective against positive transients.
Is the BZW04-136B AEC-Q101 qualified?
Yes, the BZW04-136B is AEC-Q101 qualified - confirmed by Taiwan Semiconductor's official documentation and ordering code suffix "H" (e.g., BZW04-136BH). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain and chassis applications.
What is the maximum clamping voltage of the BZW04-136B under surge conditions?
The BZW04-136B has a maximum clamping voltage (VC) of 219 V at 1.8 A peak pulse current (IPP), tested per 10/1000μs waveform. This value represents the upper limit of voltage seen by downstream components during worst-case transient events, and is critical for verifying compatibility with the absolute maximum ratings of protected ICs or MOSFETs.
Can the BZW04-136B be used in bidirectional signal line protection?
No - the BZW04-136B is strictly unidirectional and lacks symmetrical breakdown characteristics. For bidirectional protection (e.g., RS-485, CAN bus), a dedicated bidirectional variant such as BZW04-136BB or a purpose-built bidirectional TVS like SMAJ130CA must be selected instead.
What is the thermal resistance specification for the BZW04-136B?
The BZW04-136B 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 5×5 mm copper pads per lead. These values enable accurate thermal modeling in high-power-density designs and confirm suitability for ambient temperatures up to +125°C with appropriate PCB copper area.
BZW04-136B 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):
- 136V
- Voltage - Breakdown (Min):
- 152V
- Voltage - Clamping (Max) @ Ipp:
- 219V
- Current - Peak Pulse (10/1000µs):
- 1.8A
- 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)
BZW04-136B FAQ
1.How can I place an order for BZW04-136B through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-136B 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 BZW04-136B reliable?
The price and inventory of BZW04-136B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-136B is usually 5 days.
3.What payment methods are accepted for BZW04-136B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-136B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-136B?
BZW04-136B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-136B 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 BZW04-136B?
For technical support, including BZW04-136B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-136B requirements.
6.How does Aetrix verify that BZW04-136B is sourced from the original manufacturer or authorized distributors?
All BZW04-136B 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 BZW04-136B meets industry standards.
7.What is the process for return or replacement of BZW04-136B?
All BZW04-136B units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-136B, 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 BZW04-136B part is unused and in its original packaging.
Return procedure for BZW04-136B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-136B Tags
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