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Vishay General Semiconductor - Diodes Division BZW04P19BHE3/73
- Part No.:
- BZW04P19BHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P19BHE3/73.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,879
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Product details
Overview
BZW04P19BHE3/73 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 18.8 V stand-off voltage (VWM), 30.6 V clamping voltage (VC) at 13.0 A peak pulse current, and 400 W peak pulse power capability with a 10/1000 μs waveform. It is AEC-Q101 qualified and housed in a DO-204AL (DO-41) package for automotive and industrial interface protection.
For engineers reviewing the BZW04P19BHE3/73 datasheet, BZW04P19BHE3/73 pinout, BZW04P19BHE3/73 application, or BZW04P19BHE3/73 equivalent, key selection criteria include its bi-directional clamping behavior, low leakage (<1 μA at VWM), 175 °C max junction temperature, and RoHS-compliant, whisker-tested matte tin leads - critical for reliability in automotive sensor interfaces and industrial I/O circuits.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its breakdown voltage (20.9–24.2 V), it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns), while the bi-directional configuration enables symmetric protection on AC-coupled or floating lines without polarity concerns.
Thermally, it supports continuous operation up to 175 °C junction temperature and derates linearly above 25 °C ambient per Figure 2. Its 1.5 W steady-state power dissipation (PD) and 400 W peak pulse rating (PPPM) are validated under JEDEC-standard 10/1000 μs waveform conditions with 0.01% duty cycle, making it suitable for infrequent but high-energy events like ESD or inductive switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.8 V - maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR min/max | 20.9 V / 24.2 V at 1.0 mA - verified avalanche onset range ensuring consistent turn-on across production lots |
| VC @ IPPM | 30.6 V at 13.0 A - clamping voltage under 10/1000 μs surge; limits protected circuit stress to ≤30.6 V during worst-case transient |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform; supports protection against IEC 61000-4-5 Level 3 surges |
| TJ max | +175 °C - extended thermal rating enabling deployment in under-hood automotive or high-ambient industrial environments |
| AEC-Q101 | Qualified - certified for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per AEC standard |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads comply with J-STD-002 and JESD22-B102 solderability standards; HE3 suffix denotes JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bi-directional) | Transient current path | No polarity marking; symmetrical terminals enable bidirectional clamping - connects across protected line and ground (or between differential lines) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche characteristics over lifetime and temperature - critical for long-term protection consistency |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients such as ISO 7637-2 pulse 5a/b without degradation - validated for automotive load-dump immunity |
| AEC-Q101 qualification | Confirms suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Bi-directional configuration | Protects AC-coupled, floating, or differential signal lines (e.g., RS-485, CAN, LIN) without requiring polarity-aware layout |
| RoHS-compliant & whisker-tested (HE3) | Meets JESD201 Class 2 whisker resistance - eliminates risk of tin whisker growth in high-reliability automotive and industrial assemblies |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Data Line Protection |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed between sensor signal line and chassis ground to clamp transients before they reach ADC input or signal conditioner IC. Use Value: Limits voltage excursion to ≤30.6 V during 13 A surge, preventing latch-up or permanent damage to precision front-end circuitry. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs subjected to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bi-directional TVS connected across differential pair (A/B) and ground to suppress common-mode and differential-mode transients. Use Value: Symmetric clamping ensures equal protection on both lines without polarity constraints - essential for half/full-duplex bus integrity. |
| Consumer Appliance Motor Drive I/O Protection | Telecom Power Supply Input Clamping |
Use Scenario: Shielding microcontroller GPIOs driving relays or triacs in washing machine control boards from inductive kickback. IC Role / Device Role / Timing Role: Discrete TVS mounted at PCB edge near connector to absorb energy before it couples into logic-level circuitry. Use Value: 175 °C TJ rating allows placement near heat-generating motor drivers; low leakage avoids false triggering of digital inputs. |
Use Scenario: Front-end clamping on 24 V DC telecom power inputs vulnerable to surge coupling from adjacent AC mains or PoE lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of DC-DC converter input stage to prevent overvoltage shutdown or MOSFET failure. Use Value: 400 W PPPM rating sustains repeated 10/1000 μs surges per IEC 61000-4-5, extending system uptime in harsh electrical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ19CA | Same DO-214AA package; 19 V VWM, 32.4 V VC @ 12.3 A; lower PPPM (600 W) but higher IPPM due to larger junction area | Preferred where board space permits SMC/SMB footprint and higher surge current handling is required | Select SMBJ19CA when needing >400 W surge rating or tighter VC tolerance; not drop-in due to different package and thermal profile |
| P6KE19CA | DO-15 package; 19 V VWM, 32.4 V VC @ 12.3 A; 600 W PPPM; higher VF and larger case size than DO-41 | Better suited for legacy through-hole designs with larger pad spacing and less stringent size constraints | Choose P6KE19CA for cost-sensitive industrial designs where DO-15 is already standardized; requires PCB redesign for BZW04P19BHE3/73 replacement |
Compared with SMBJ19CA and P6KE19CA, BZW04P19BHE3/73 offers the smallest footprint (DO-41), AEC-Q101 qualification, and JESD201 Class 2 whisker resistance - making it the preferred choice for new automotive and space-constrained industrial designs requiring certified reliability.
Availability
BZW04P19BHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer appliance motor drive I/O requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle support.
Supply support for BZW04P19BHE3/73 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, efficiency, and application-specific performance.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom systems where robustness against ESD, EFT, and surge events is mandatory.
FAQ
What is the clamping voltage of BZW04P19BHE3/73 and how is it measured?
The clamping voltage (VC) of BZW04P19BHE3/73 is 30.6 V, measured at 13.0 A peak pulse current using a 10/1000 μs waveform per IEC 61000-4-5. This value represents the maximum voltage that appears across the device during a standardized surge event, directly limiting stress on downstream components. The BZW04P19BHE3/73 maintains this clamping performance across its rated junction temperature range.
Is BZW04P19BHE3/73 suitable for automotive applications?
Yes, BZW04P19BHE3/73 is AEC-Q101 qualified and manufactured with HE3 suffix indicating JESD201 Class 2 whisker resistance - both critical for automotive use. Its 175 °C maximum junction temperature, robust surge handling, and bi-directional symmetry make it appropriate for engine control units, body electronics, and ADAS sensor interfaces where reliability under harsh conditions is mandatory. The BZW04P19BHE3/73 meets automotive-grade screening requirements.
How does the bi-directional design of BZW04P19BHE3/73 affect its circuit implementation?
The bi-directional design of BZW04P19BHE3/73 means it has no anode/cathode marking and provides identical clamping behavior in both polarities. This allows direct placement across floating or AC-coupled lines - such as RS-485 differential pairs or transformer-isolated interfaces - without concern for orientation. Unlike uni-directional TVS diodes, the BZW04P19BHE3/73 simplifies layout and eliminates risk of reverse installation during assembly.
What is the maximum reverse leakage current for BZW04P19BHE3/73 at its stand-off voltage?
The maximum reverse leakage current (ID) for BZW04P19BHE3/73 is 1.0 μA at its 18.8 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal impact on high-impedance sensor outputs or battery-powered circuits. Leakage remains within specification across the full operating temperature range, supporting reliable performance in precision analog and low-power applications using BZW04P19BHE3/73.
Can BZW04P19BHE3/73 be used in place of a uni-directional TVS diode?
BZW04P19BHE3/73 can replace a uni-directional TVS only in circuits where polarity independence is acceptable - such as across AC lines, differential buses, or grounded signal paths where reverse conduction is non-destructive. It must not replace uni-directional TVS diodes in DC power rail applications where forward conduction would cause short-circuit failure. Always verify circuit topology before substituting BZW04P19BHE3/73 for uni-directional variants.
BZW04P19BHE3/73 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:
- -
- Bidirectional Channels:
- 1
- 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)
BZW04P19BHE3/73 FAQ
1.How can I place an order for BZW04P19BHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P19BHE3/73 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 BZW04P19BHE3/73 reliable?
The price and inventory of BZW04P19BHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P19BHE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P19BHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P19BHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P19BHE3/73?
BZW04P19BHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P19BHE3/73 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 BZW04P19BHE3/73?
For technical support, including BZW04P19BHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P19BHE3/73 requirements.
6.How does Aetrix verify that BZW04P19BHE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P19BHE3/73 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 BZW04P19BHE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P19BHE3/73?
All BZW04P19BHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P19BHE3/73, 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 BZW04P19BHE3/73 part is unused and in its original packaging.
Return procedure for BZW04P19BHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P19BHE3/73 Tags
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