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Vishay General Semiconductor - Diodes Division BZW04P19HE3/73
- Part No.:
- BZW04P19HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P19HE3/73.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,999
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Product details
Overview
BZW04P19HE3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 400 W peak pulse power (10/1000 µs), 18.8 V stand-off voltage (VWM), 30.6 V maximum clamping voltage (VC) at 13.0 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the BZW04P19HE3/73 datasheet, BZW04P19HE3/73 pinout, BZW04P19HE3/73 application, or BZW04P19HE3/73 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, bi-directional protection capability, RoHS-compliant AEC-Q101 qualification, and DO-41 package compatibility with through-hole PCB layouts.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified at 20.9–24.2 V (IT = 1.0 mA). Its low incremental surge resistance and fast response time enable effective suppression of ESD, lightning-induced surges, and inductive switching transients without significant voltage overshoot.
The device uses a glass passivated chip junction and matte tin-plated leads compliant with J-STD-002 and JESD22-B102. The HE3 suffix confirms AEC-Q101 qualification and JESD201 Class 2 whisker resistance, distinguishing it from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.8 V - Maximum continuous reverse operating voltage before clamping begins |
| VC @ IPPM | 30.6 V at 13.0 A - Clamped voltage during 10/1000 µs surge, defining protected circuit's max stress level |
| PPPM | 400 W - Peak pulse power handling per 10/1000 µs waveform, enabling robust transient immunity |
| TJ max. | +175 °C - Maximum junction temperature, supporting operation in under-hood automotive environments |
| Package | DO-204AL (DO-41) - Standard through-hole package with 0.205" body diameter, compatible with legacy assembly |
| Qualification | AEC-Q101 qualified - Validated for automotive electronic systems requiring high-reliability surge protection |
| RoHS | Compliant - Meets Directive 2011/65/EU; HE3 suffix confirms lead-free, whisker-resistant termination |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, cylindrical epoxy-molded case with matte tin-plated leads. Bi-directional construction means no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | No defined anode/cathode; terminals conduct identically in either direction during transient events |
| Lead 1 | Transient current entry | Accepts surge current from protected line; connects to I/O or power rail needing clamping |
| Lead 2 | Transient current return | Completes low-impedance path to ground or reference plane during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 400 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) in properly designed circuits |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure surge protection |
| Low clamping ratio (VC/VWM = 1.63) | Minimizes overvoltage exposure to downstream ICs such as CAN transceivers or sensor interfaces |
| UL 94 V-0 molding compound | Prevents flame propagation in high-energy fault conditions, meeting board-level safety requirements |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature sensors exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Voltage clamping element placed across sensor output and ground to limit transients to ≤30.6 V. Use Value: Prevents damage to 3.3 V or 5 V ADC inputs in engine control units while maintaining signal integrity below VWM. | Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback of solenoid drivers. IC Role / Device Role / Timing Role: Fast-response shunt protector that activates within nanoseconds to clamp spikes above 18.8 V. Use Value: Eliminates need for external series impedance or RC snubbers, reducing BOM count and board space. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceiver pins in base station backhaul equipment against lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Bi-directional clamping device connected between differential pair and ground to suppress common-mode transients. Use Value: Maintains signal fidelity up to 10 Mbps by limiting clamping voltage well below transceiver absolute maximum ratings. | Use Scenario: Suppressing commutation spikes on BLDC motor driver gate drive traces in smart washing machines. IC Role / Device Role / Timing Role: Localized TVS placed near half-bridge MOSFET gates to absorb Miller-induced voltage overshoot. Use Value: Prevents false turn-on and gate oxide degradation, extending MOSFET lifetime without adding gate resistors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ19A-E3/52 | Uni-directional; 19 V VWM; SMA package (surface-mount); 600 W PPPM | Requires polarity-aware layout; better suited for space-constrained PCBs with automated assembly | Select when SMT placement and higher pulse power are prioritized over through-hole serviceability. |
| P6SMB19CA | Bi-directional; 19 V VWM; SMA package; 600 W PPPM; AEC-Q101 option available | Same clamping behavior but smaller footprint; requires requalification for DO-41 socket replacement | Choose for new designs targeting automotive Grade 2 environments where board density is critical. |
Compared with BZW04P19HE3/73, SMBJ19A-E3/52 offers higher pulse power but lacks bi-directionality and AEC-Q101 validation in standard grade, while P6SMB19CA matches bi-directional function and qualification but demands PCB redesign due to SMA packaging.
Availability
BZW04P19HE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply and AEC-Q101 traceability.
Supply support for BZW04P19HE3/73 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, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The BZW04P series belongs to Vishay's TransZorb® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of BZW04P19HE3/73 under a 10/1000 µs surge?
The BZW04P19HE3/73 has a maximum clamping voltage (VC) of 30.6 V at 13.0 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance remains stable across its rated junction temperature range of –55 °C to +175 °C.
Is BZW04P19HE3/73 suitable for automotive applications?
Yes, BZW04P19HE3/73 is AEC-Q101 qualified (confirmed by the HE3 suffix), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its DO-41 package, 175 °C maximum junction temperature, and glass passivated junction ensure reliability under thermal cycling, vibration, and high-humidity under-hood conditions.
How does the HE3 suffix differ from E3 in BZW04P19HE3/73?
The HE3 suffix in BZW04P19HE3/73 indicates AEC-Q101 qualification and JESD201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only. HE3 parts undergo additional stress testing-including temperature cycling, humidity bias, and mechanical shock-to validate performance in automotive-grade environments, with full traceability and lot-level documentation.
What is the standoff voltage (VWM) and why is it critical for BZW04P19HE3/73?
The standoff voltage (VWM) of BZW04P19HE3/73 is 18.8 V - the maximum continuous DC or RMS voltage the device can withstand without entering avalanche conduction. This parameter ensures normal circuit operation without leakage or power loss, while still allowing rapid clamping when transients exceed this threshold. Selecting VWM ≥120% of operating voltage prevents false triggering in 24 V automotive or industrial systems.
Can BZW04P19HE3/73 replace uni-directional TVS diodes in existing designs?
No - BZW04P19HE3/73 is bi-directional and lacks polarity marking, so it cannot directly replace uni-directional TVS diodes like BZW04P19HE3/54 without verifying circuit symmetry. Uni-directional parts require correct cathode orientation relative to ground; substituting a bi-directional device may compromise protection in DC-biased lines unless both polarities are equally exposed to transients.
BZW04P19HE3/73 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 13A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P19HE3/73 FAQ
1.How can I place an order for BZW04P19HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P19HE3/73 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 BZW04P19HE3/73 reliable?
The price and inventory of BZW04P19HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P19HE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P19HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P19HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P19HE3/73?
BZW04P19HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P19HE3/73 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 BZW04P19HE3/73?
For technical support, including BZW04P19HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P19HE3/73 requirements.
6.How does Aetrix verify that BZW04P19HE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P19HE3/73 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 BZW04P19HE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P19HE3/73?
All BZW04P19HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P19HE3/73, 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 BZW04P19HE3/73 part is unused and in its original packaging.
Return procedure for BZW04P19HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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