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Vishay General Semiconductor - Diodes Division BZW04P11-E3/73
- Part No.:
- BZW04P11-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P11-E3/73.pdf
- Description:
- TVS DIODE 11.1VWM 18.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BZW04P11-E3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 11.1 V stand-off voltage (VWM), 12.4–14.3 V breakdown range (VBR at 1 mA), 18.2 V clamping voltage (VC) at 22 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04P11-E3/73 datasheet, BZW04P11-E3/73 pinout, BZW04P11-E3/73 application, or BZW04P11-E3/73 equivalent, key selection criteria include its DO-41 (DO-204AL) package, bi-directional symmetry, low 0.081 %/°C VBR temperature coefficient, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity standards.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - enabling single-device protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and fast response (<1 ns) to transients induced by inductive switching or ESD events.
The device uses a planar silicon avalanche structure optimized for low incremental surge resistance (rd ≈ 0.3 Ω derived from ΔVC/ΔIPPM), delivering consistent clamping performance across its 22 A rated IPPM. Thermal derating follows a linear curve from 1.5 W at TL = 75 °C to zero at TJ = 175 °C, supporting reliable operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11.1 V - Maximum continuous working voltage before conduction; sets safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 12.4 V / 14.3 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC @ IPPM | 18.2 V at 22 A - Clamped voltage during 400 W 10/1000 µs surge; limits downstream IC stress to safe levels. |
| IPPM | 22 A - Peak pulse current capability; supports Level 4 IEC 61000-4-5 (4 kV, 2 Ω source) protection. |
| PPPM | 400 W - Peak pulse power rating; enables handling of repetitive surges up to 0.01 % duty cycle. |
| TJ max | 175 °C - Maximum junction temperature; validates suitability for under-hood automotive use cases. |
| Temp. Coeff. | +0.081 %/°C - Low VBR drift with temperature; maintains clamping stability across -55 °C to +150 °C ambient. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - bi-directional symmetry confirmed per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction between leads; either terminal serves as input/output for transient energy diversion. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures long-term reliability and stable leakage (<1 µA at VWM) under humid or high-bias conditions. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| 400 W peak pulse power (10/1000 µs) | Withstands repeated ISO 7637-2 Pulse 1/2a/3a transients and IEC 61000-4-5 combination wave surges. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes protected circuit overvoltage exposure - critical for 3.3 V/5 V logic and analog front-ends. |
| RoHS-compliant, JESD201 Class 1A whisker tested | Meets automotive supply chain requirements for lead-free assembly and long-term interconnect integrity. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bi-directional clamping element placed directly at connector entry point to shunt surge energy before reaching interface ICs. Use Value: Maintains signal integrity during ISO 16750-2 load dump (up to 35 V, 100 ms) and prevents latch-up in downstream RS-485 or analog-to-digital converters. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring transients from solenoid valves and motor contactors. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance and filtering. Use Value: Enables >100,000 surge cycles per channel without degradation, satisfying IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity requirements. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side transient suppression on 5–12 V DC outputs of wall adapters and USB PD chargers exposed to system-level ESD and conducted noise. IC Role / Device Role / Timing Role: Final-stage protector downstream of DC-DC regulators, absorbing residual spikes that bypass bulk capacitance. Use Value: Prevents brownout or reset events in connected devices by limiting output rail excursions to ≤18.2 V during 22 A surges. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from lightning-induced surges entering via RJ-45 jacks in residential gateways and VoIP phones. IC Role / Device Role / Timing Role: Bi-directional shunt device on differential pairs, paired with common-mode chokes and gas discharge tubes. Use Value: Provides sub-1 ns response to 1.2/50 µs surges while maintaining <0.5 pF junction capacitance - preserving signal integrity up to 100 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Same DO-214AA package; higher 600 W PPPM, but larger 20.8 V VC at 32.4 A - 14 % higher clamping voltage than BZW04P11-E3/73. | Preferred where board space permits SMC/SMB footprint and higher surge margin is needed over tighter clamping. | Select SMBJ11CA only if layout allows surface-mount rework and system can tolerate higher clamped voltage. |
| P6KE11CA | DO-15 package; same 11.1 V VWM, but lower 5.0 W PD and 200 W PPPM; 20.1 V VC at 10 A - 10.4 % higher clamping than BZW04P11-E3/73. | Suitable for cost-sensitive consumer designs with lower surge severity requirements (IEC 61000-4-2 Level 3). | Choose P6KE11CA when thermal constraints limit power dissipation and AEC-Q101 qualification is not required. |
Compared with SMBJ11CA and P6KE11CA, BZW04P11-E3/73 delivers superior clamping precision (18.2 V), AEC-Q101 validation, and optimal balance of surge robustness and package compatibility for through-hole automotive and industrial PCBs.
Availability
BZW04P11-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 assurance.
Supply support for BZW04P11-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in harsh environments - emphasizing low clamping, thermal stability, and automotive-grade qualification.
FAQ
What is the maximum clamping voltage of BZW04P11-E3/73 under surge conditions?
The BZW04P11-E3/73 has a maximum clamping voltage (VC) of 18.2 V at 22 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuits during transient events. The BZW04P11-E3/73 maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C).
Is BZW04P11-E3/73 suitable for automotive applications?
Yes, BZW04P11-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control, body electronics, and ADAS sensor interfaces. Its DO-41 package withstands mechanical vibration, its 175 °C maximum junction temperature supports under-hood environments, and its bi-directional symmetry simplifies protection of LIN/CAN bus lines. The BZW04P11-E3/73 meets ISO 16750-2 load dump and ISO 7637-2 pulse immunity requirements when properly implemented.
How does the bi-directional design of BZW04P11-E3/73 affect circuit implementation?
The bi-directional architecture of BZW04P11-E3/73 eliminates polarity concerns - either lead may connect to line or ground, enabling symmetrical placement across AC-coupled or floating signal paths. This simplifies layout for differential interfaces like RS-485 or Ethernet, avoids reverse-connection risk during assembly, and ensures identical clamping behavior for positive and negative transients. The BZW04P11-E3/73 requires no external biasing or orientation marking.
What is the junction capacitance of BZW04P11-E3/73, and how does it impact high-frequency signals?
The BZW04P11-E3/73 exhibits typical junction capacitance of <0.5 pF at zero bias and <1.0 pF at VWM (11.1 V), measured at 1 MHz. This ultra-low capacitance minimizes signal distortion and insertion loss in high-speed data lines (e.g., USB 2.0, CAN FD, or LVDS), making the BZW04P11-E3/73 suitable for protecting sensitive analog and digital interfaces without degrading bandwidth or rise time.
Does BZW04P11-E3/73 require a heatsink for standard operation?
No, BZW04P11-E3/73 does not require an external heatsink under normal operating conditions. Its 1.5 W steady-state power dissipation rating applies at lead temperature (TL) of 75 °C with infinite heatsinking - but typical PCB trace copper provides sufficient thermal path for transient-only duty cycles (<0.01 %). Continuous power dissipation is limited by ambient temperature and PCB copper area; the BZW04P11-E3/73 remains within spec with ≥1 cm² of 1 oz copper connected to each lead.
BZW04P11-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):
- 11.1V
- Voltage - Breakdown (Min):
- 12.4V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 22A
- 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)
BZW04P11-E3/73 FAQ
1.How can I place an order for BZW04P11-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P11-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 BZW04P11-E3/73 reliable?
The price and inventory of BZW04P11-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 BZW04P11-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P11-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P11-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P11-E3/73?
BZW04P11-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P11-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 BZW04P11-E3/73?
For technical support, including BZW04P11-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P11-E3/73 requirements.
6.How does Aetrix verify that BZW04P11-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P11-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 BZW04P11-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P11-E3/73?
All BZW04P11-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P11-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 BZW04P11-E3/73 part is unused and in its original packaging.
Return procedure for BZW04P11-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P11-E3/73 Tags
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