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Taiwan Semiconductor Corporation BZW04-14
- Part No.:
- BZW04-14
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-14.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,333
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Product details
Overview
BZW04-14 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, with 13.6V working stand-off voltage (VWM), 15.2–16.8V breakdown voltage (VBR @ 1mA), and 22.5V maximum clamping voltage (VC @ 17.8A). It protects automotive and industrial power rails against ESD and inductive switching transients.
For engineers reviewing the BZW04-14 datasheet, BZW04-14 pinout, BZW04-14 application, or BZW04-14 equivalent, this page delivers verified electrical parameters, thermal performance data, polarity marking guidance, and AEC-Q101-qualified alternatives - all specific to the BZW04-14 variant within the BZW04 series.
Technical Context
The BZW04-14 operates as a unidirectional avalanche diode, triggering at ≥15.2V (min VBR) and clamping transients to ≤22.5V at 17.8A peak impulse current. Its low 1μA reverse leakage at 13.6V enables minimal standby power loss in always-on circuits.
Designed for 10/1000μs surge waveforms, it achieves 400W peak pulse power with 60°C/W junction-to-lead thermal resistance and supports operation from –55°C to +175°C. Polarity is marked by cathode band; no internal series impedance or integrated filtering is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13.6 V - Maximum continuous DC or RMS voltage the device blocks without conduction. |
| VBR min/max | 15.2 V / 16.8 V @ 1 mA - Confirmed avalanche onset range; ensures reliable turn-on before downstream IC damage thresholds. |
| VC @ IPP | 22.5 V @ 17.8 A - Clamped voltage during 10/1000μs surge; defines worst-case stress on protected circuitry. |
| PPK | 400 W - Peak pulse power handling per single non-repetitive event; validated per ANSI/IEEE C62.35. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive environments. |
| RθJL | 60 °C/W - Junction-to-lead thermal resistance; informs heatsinking requirements when mounted on 9.5mm leads. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case with UL 94V-0 rating. Cathode identified by single band; anode is unmarked end. Leads are pure tin-plated, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Low-side reference terminal | Connected to ground or low-voltage rail; completes clamping path during overvoltage events. |
| Cathode (banded end) | High-side surge input terminal | Connected to protected line (e.g., 12V battery rail); conducts avalanche current into ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | BZW04-14H variant meets automotive-grade reliability testing for engine control and body electronics. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during fast transients - critical for protecting 16V-tolerant microcontrollers. |
| 1 μA ID @ VWM | Enables use in low-power always-on nodes (e.g., CAN wake-up lines) without measurable leakage penalty. |
| DO-41 mechanical compatibility | Supports legacy through-hole assembly and manual rework; 0.300g mass aids thermal inertia during surge events. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery feed to engine control unit (ECU) subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and LDO input. Use Value: Limits transient excursions to ≤22.5V, preventing latch-up or gate oxide damage in 3.3V/5V domain regulators. |
Use Scenario: 24V analog sensor supply line exposed to relay coil flyback in PLC I/O modules. IC Role / Device Role / Timing Role: Standoff protection device parallel to sensor power input, upstream of filtering. Use Value: Absorbs 400W inductive spikes within 10μs rise time while maintaining <1μA quiescent leakage. |
| LED Driver Overvoltage Clamp | ESD-Sensitive Communication Port Guard |
Use Scenario: Constant-current LED driver input in commercial lighting fixtures subject to AC line surges. IC Role / Device Role / Timing Role: Primary surge suppression stage before buck controller IC. Use Value: Clamps 10/1000μs surges to 22.5V, preserving MOSFET gate integrity and enabling cost-effective 30V-rated FETs. |
Use Scenario: RS-485 transceiver VCC line in building automation nodes exposed to human-body-model ESD. IC Role / Device Role / Timing Role: Secondary-level protection behind common-mode choke, directly at transceiver supply pin. Use Value: Responds in <1 ns to ±8kV contact discharge, limiting VCC rail excursion to safe levels before internal LDO fails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ14A | DO-214AA package; 14V VWM; 23.2V VC @ 17.3A; 600W PPK rating. | Surface-mount only; higher clamping voltage but greater surge margin; requires PCB redesign. | Select SMBJ14A for space-constrained SMT designs needing higher PPK headroom; not drop-in compatible. |
| P6KE15A | DO-15 package; 15V VWM; 23.2V VC @ 17.3A; 600W PPK; wider VBR tolerance (16.7–18.5V). | Same axial form factor but longer body (4.5mm vs. 3.6mm length); higher IR (5μA @ VWM). | Choose P6KE15A when legacy DO-15 footprint exists and 5μA leakage is acceptable; verify board clearance. |
Compared with BZW04-14, SMBJ14A offers higher surge capacity in a smaller SMT package but demands layout change, while P6KE15A maintains axial compatibility at the cost of higher leakage and looser VBR tolerance - both require validation of clamping margin versus system IC absolute maximum ratings.
Availability
BZW04-14 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver overvoltage clamping requiring stable component supply across multi-year production cycles.
Supply support for BZW04-14 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 qualification capability.
The BZW04 series was developed specifically for high-reliability transient suppression in automotive and industrial power systems, emphasizing tight VBR tolerance, low clamping ratio, and extended temperature operation up to +175°C.
FAQ
What is the exact breakdown voltage range for BZW04-14?
The BZW04-14 has a guaranteed breakdown voltage (VBR) range of 15.2 V to 16.8 V measured at 1 mA test current (IT), per the manufacturer's published electrical characteristics table. This range is confirmed for the unidirectional variant and applies under TA = 25°C conditions. The BZW04-14B bidirectional version shares identical VBR limits but supports symmetrical clamping.
Is BZW04-14 RoHS and halogen-free compliant?
Yes, BZW04-14 is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and the pure tin-plated leads satisfy J-STD-002 solderability requirements. These compliance attributes are explicitly stated in the official BZW04 series datasheet revision J2104.
Does BZW04-14 have AEC-Q101 qualification?
The standard BZW04-14 is not AEC-Q101 qualified; however, the BZW04-14H variant - indicated by the "H" suffix in the ordering code - is fully AEC-Q101 qualified for automotive applications. This distinction is documented in the Ordering Information section of the datasheet, where "H" explicitly denotes AEC-Q101 compliance.
What is the maximum clamping voltage of BZW04-14 under surge conditions?
The maximum clamping voltage (VC) of BZW04-14 is 22.5 V at a peak impulse current (IPP) of 17.8 A, tested with the standard 10/1000μs waveform. This value is measured across the device terminals during transient conduction and represents the upper bound of voltage seen by downstream circuitry during a full-rated surge event.
Can BZW04-14 be used in bidirectional configurations?
No - BZW04-14 is a unidirectional TVS diode. For bidirectional protection, the designated part is BZW04-14B, which features symmetrical breakdown and clamping behavior. The two variants share identical VWM, VBR, and VC specs but differ in internal construction and polarity marking; they are not interchangeable without circuit redesign.
BZW04-14 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- 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)
BZW04-14 FAQ
1.How can I place an order for BZW04-14 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-14 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 BZW04-14 reliable?
The price and inventory of BZW04-14 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-14 is usually 5 days.
3.What payment methods are accepted for BZW04-14?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-14 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-14?
BZW04-14 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-14 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 BZW04-14?
For technical support, including BZW04-14 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-14 requirements.
6.How does Aetrix verify that BZW04-14 is sourced from the original manufacturer or authorized distributors?
All BZW04-14 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 BZW04-14 meets industry standards.
7.What is the process for return or replacement of BZW04-14?
All BZW04-14 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-14, 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 BZW04-14 part is unused and in its original packaging.
Return procedure for BZW04-14:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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