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Vishay General Semiconductor - Diodes Division BZW04P128-E3/73
- Part No.:
- BZW04P128-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P128-E3/73.pdf
- Description:
- TVS DIODE 128VWM 207VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,687
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Product details
Overview
BZW04P128-E3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 128 V stand-off voltage (VWM), 207 V maximum clamping voltage (VC) at 2.0 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04P128-E3/73 datasheet, BZW04P128-E3/73 pinout, BZW04P128-E3/73 application, or BZW04P128-E3/73 equivalent, key selection criteria include its bi-directional clamping symmetry, AEC-Q101 qualification, DO-41 package compatibility, and low leakage (<1 μA at VWM) for high-impedance circuit protection.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding 128 V, it avalanches symmetrically in both directions to clamp the line at ≤207 V while diverting up to 2.0 A (10/1000 μs). Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for repetitive surge immunity, it sustains 400 W peak pulse power at TA = 25 °C with derating above 25 °C per Fig. 2, and supports continuous power dissipation of 1.5 W on an infinite heatsink at TL = 75 °C. Junction temperature range spans –55 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 128 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 120 VAC-derived rails or 110 VDC bus lines. |
| VC @ IPPM | 207 V - Clamped voltage at 2.0 A peak pulse current; ensures downstream ICs rated for ≤220 V absolute max are protected under defined surge conditions. |
| PPPM | 400 W - Peak pulse power handling with 10/1000 μs waveform; enables suppression of common lightning-induced surges (IEC 61000-4-5 Level 3). |
| ID @ VWM | <1 μA - Reverse leakage at 128 V; critical for preserving signal integrity and battery life in always-on sensor monitoring circuits. |
| TJ max. | +175 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures without thermal derating penalties. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with 0.205" body diameter; compatible with legacy PCB layouts and wave-solder processes. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock; suitable for engine control and ADAS sensor modules. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, epoxy-molded, glass-passivated chip. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. Bi-directional construction - no polarity marking; symmetrical terminal function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (either end) | Bi-directional avalanche junction | Both terminals serve identically as clamping nodes; no cathode band - enables blind insertion and eliminates orientation errors in automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage over lifetime and across temperature; prevents surface degradation during high-humidity operation. |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment without external current limiting. |
| AEC-Q101 qualification | Validated for automotive applications including powertrain, chassis, and body electronics - supports PPAP documentation and long-term field reliability. |
| Low clamping ratio (VC/VWM = 1.62) | Minimizes let-through energy during clamping; reduces stress on downstream MOSFETs, op-amps, and microcontroller I/O pins. |
| RoHS-compliant E3 suffix | Meets JESD201 Class 1A whisker resistance; suitable for high-reliability commercial and industrial assemblies requiring lead-free compliance. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across signal/power lines upstream of interface ICs to limit voltage excursions within safe operating area. Use Value: Prevents latch-up and gate oxide damage in 5 V/12 V sensor front-ends by clamping transients to ≤207 V with sub-1 ns response time. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against 2 kV/1 kA surges induced by relay coil de-energization or motor drive noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance to limit peak current into protected ASICs. Use Value: Enables >100,000 surge cycles without parameter shift due to glass-passivated junction stability and 175 °C TJ rating. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Guarding Ethernet PHY magnetics and PoE controller inputs against ESD and fast transients in network switches and base stations. IC Role / Device Role / Timing Role: Secondary-level TVS placed after common-mode chokes to suppress differential-mode surges crossing data lines. Use Value: Symmetric bi-directional clamping maintains signal integrity on full-duplex links while meeting IEC 61000-4-2 Level 4 (±15 kV air) requirements. |
Use Scenario: Output-side surge suppression on 12–19 V DC adapters for laptops and monitors exposed to mains-borne transients. IC Role / Device Role / Timing Role: Final-stage clamp between output capacitor and connector to prevent overvoltage propagation to connected devices. Use Value: Low 1 μA leakage preserves no-load efficiency; DO-41 form factor allows direct replacement of legacy suppressors without board rework. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ130A | Uni-directional; 130 V VWM; 200 W PPPM; SMA package (surface-mount) | Requires polarity-aware layout; lower power rating limits use in high-energy surge zones. | Select when space-constrained PCBs demand SMT and unidirectional protection suffices. |
| P6KE130CA | Same DO-41 package; 130 V VWM; 600 W PPPM; higher clamping voltage (219 V) | Higher let-through voltage may exceed safe margins for 3.3 V/5 V logic; larger junction capacitance affects high-speed lines. | Choose for legacy designs needing higher pulse power but accept trade-offs in clamping tightness and speed. |
Compared with BZW04P128-E3/73, SMBJ130A offers smaller footprint but reduced surge capacity and polarity sensitivity, while P6KE130CA delivers greater pulse power in identical packaging but with looser voltage control - making BZW04P128-E3/73 optimal for AEC-Q101–required, bi-directional, precision-clamping roles.
Availability
BZW04P128-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, RoHS compliance, and AEC-Q101 traceability.
Supply support for BZW04P128-E3/73 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The BZW04P series targets high-energy transient suppression in harsh environments - engineered for AEC-Q101 compliance, wide temperature operation, and consistent clamping performance across production lots.
FAQ
What is the clamping voltage of BZW04P128-E3/73 under standard test conditions?
The BZW04P128-E3/73 exhibits a maximum clamping voltage (VC) of 207 V when subjected to a 2.0 A peak pulse current with a 10/1000 μs waveform at TA = 25 °C. This value is measured across both terminals and reflects its bi-directional symmetry - a critical parameter for ensuring downstream components remain within their absolute maximum voltage ratings during surge events. The BZW04P128-E3/73 achieves this clamping performance while maintaining low incremental surge resistance.
Is BZW04P128-E3/73 suitable for automotive applications?
Yes, BZW04P128-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its –55 °C to +175 °C operating junction temperature range, glass-passivated junction, and validation across temperature cycling and humidity bias tests confirm suitability for under-hood and cabin-mounted systems. The BZW04P128-E3/73 meets stringent automotive reliability requirements without derating in typical vehicle thermal profiles.
What does the "E3/73" suffix indicate in BZW04P128-E3/73?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction meeting JESD201 Class 1A whisker resistance, while "/73" specifies the preferred packaging: 73 mm tape-and-reel format with 550 units per reel. This differs from alternate codes like "/54" (13-inch reel) and confirms the part's compliance with lead-free soldering standards and automated placement compatibility. The BZW04P128-E3/73 is not AEC-Q101 qualified in E3 form - that requires the HE3 suffix variant.
How does BZW04P128-E3/73 differ from uni-directional TVS diodes like BZW04-128-E3/73?
BZW04P128-E3/73 is bi-directional (denoted by the "B" in its full family designation BZW04P128B), meaning it clamps symmetrically in both polarities with no cathode marking - ideal for AC lines or bidirectional data buses. In contrast, BZW04-128-E3/73 is uni-directional, featuring a cathode band and forward conduction behavior. Both share identical VWM (128 V) and VC (207 V), but only the bi-directional version supports applications where voltage polarity reversal occurs, such as LIN bus or transformer-coupled interfaces. The BZW04P128-E3/73 eliminates orientation-dependent assembly errors.
Can BZW04P128-E3/73 be used in parallel for higher surge current handling?
No - BZW04P128-E3/73 is not recommended for parallel operation due to inherent parameter spread in breakdown voltage (VBR min/max = 143 V / 165 V), which causes uneven current sharing and potential thermal runaway. Vishay specifies single-device operation only; for higher current capability, select a higher-rated part such as BZW04P154-E3/73 (IPPM = 1.7 A) or consult Vishay's application note AN-G-001 for derating guidance. The BZW04P128-E3/73 must be applied per its published single-unit ratings to ensure reliability.
BZW04P128-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 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)
BZW04P128-E3/73 FAQ
1.How can I place an order for BZW04P128-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P128-E3/73 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 BZW04P128-E3/73 reliable?
The price and inventory of BZW04P128-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P128-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P128-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P128-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P128-E3/73?
BZW04P128-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P128-E3/73 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 BZW04P128-E3/73?
For technical support, including BZW04P128-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P128-E3/73 requirements.
6.How does Aetrix verify that BZW04P128-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P128-E3/73 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 BZW04P128-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P128-E3/73?
All BZW04P128-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P128-E3/73, 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 BZW04P128-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P128-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P128-E3/73 Tags
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