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Vishay General Semiconductor - Diodes Division BZW04-19BHE3/54
- Part No.:
- BZW04-19BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-19BHE3/54.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,667
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Product details
Overview
BZW04-19BHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of signal and power lines. It features a 18.8 V standoff voltage (VWM), 20.9–23.1 V breakdown range (VBR at 1 mA), 30.6 V clamping voltage (VC) at 13 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-19BHE3/54 datasheet, BZW04-19BHE3/54 pinout, BZW04-19BHE3/54 application, or BZW04-19BHE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical data, clamping performance under surge conditions, and direct alternatives for circuit-level ESD/transient hardening.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with no polarity marking on the device body. Its glass-passivated junction enables fast response (<1 ns) to transients and low incremental surge resistance, critical for protecting sensitive inputs against inductive switching spikes and lightning-induced surges.
Rated for -55 °C to +175 °C operating junction temperature and qualified to AEC-Q101, the BZW04-19BHE3/54 supports high-reliability automotive and industrial environments where thermal stability and repetitive surge endurance are mandatory - including CAN bus line protection and motor driver feedback sensing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA; defines safe operating margin below breakdown |
| VBR min/max | 20.9 V / 23.1 V at 1 mA - tight breakdown tolerance ensures predictable turn-on during transient events |
| VC @ IPPM | 30.6 V at 13 A - clamping voltage limits downstream IC stress during 10/1000 μs surge; <12.2 V overshoot above VWM |
| PPPM | 400 W - peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) |
| IPPM | 13 A - maximum non-repetitive surge current capability; derates linearly above 25 °C ambient |
| TJ max | +175 °C - extended junction temperature rating enables use in under-hood automotive modules and high-power industrial controls |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: 2.7 mm diameter body, 5.2 mm maximum length, matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - symmetrical bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Transient conduction path | Identical bidirectional terminals - conducts surge current equally in either direction when VWM exceeded |
| Lead 1 / Lead 2 | PCB interconnect interface | Matte tin-plated, 0.71–0.86 mm diameter; supports 275 °C solder dip (10 s) and JESD201 class 2 whisker resistance |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables sub-nanosecond response time and stable leakage performance across -55 °C to +175 °C |
| 400 W peak pulse power | Withstands IEC 61000-4-5 combination wave (1.2/50 μs voltage, 8/20 μs current) up to Level 3 without degradation |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| UL 94 V-0 molding compound | Self-extinguishing epoxy encapsulation meets flammability requirements for enclosed industrial enclosures |
| RoHS-compliant HE3 suffix | Meets JESD201 class 2 whisker test; suitable for lead-free reflow and high-reliability automotive assembly |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog voltage outputs of wheel speed sensors and throttle position sensors from load dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching ADC input or microcontroller GPIO. Use Value: Limits transient voltage to ≤30.6 V during 13 A surges, preventing latch-up or permanent damage to 3.3 V/5 V signal chain components. | Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact inputs, mounted adjacent to terminal block to minimize inductance in surge path. Use Value: Clamps 1 kV/2 Ω IEC 61000-4-5 surges within 1 ns, maintaining input logic state integrity and eliminating false triggering. |
| Consumer Appliance Motor Control | Telecom Line Interface Protection |
Use Scenario: Shielding microcontroller-based motor drivers in washing machines and HVAC blowers from back-EMF generated by brushed DC motors. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals and across H-bridge supply rails to absorb commutation spikes. Use Value: Dissipates 400 W peak pulses without thermal runaway, enabling compact PCB layout with no heatsink required. | Use Scenario: Protecting RS-485 transceiver pins in building automation gateways connected to long outdoor cabling susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protection device placed before common-mode choke and transceiver IC to limit differential-mode overvoltage. Use Value: Maintains <1 μA leakage at 18.8 V, preserving signal integrity while clamping 10/1000 μs transients to 30.6 V. |
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 | DO-214AA package; 19 V VWM, 30.6 V VC at 13.3 A; same PPPM but higher capacitance (150 pF vs. ~50 pF) | Suitable for board space-constrained designs but less optimal for high-speed data lines due to higher junction capacitance | Select SMBJ19CA only if surface-mount assembly is required and signal bandwidth <1 MHz |
| P6KE19CA | DO-15 package; 19 V VWM, 32.4 V VC at 12.3 A; lower surge rating (600 W vs. 400 W peak, but 10/1000 μs derated to 400 W) | Legacy through-hole alternative with identical VWM/VC but larger footprint and no AEC-Q101 qualification | Choose P6KE19CA only for cost-sensitive commercial equipment where automotive qualification is not mandated |
Compared with SMBJ19CA and P6KE19CA, the BZW04-19BHE3/54 offers AEC-Q101 qualification, tighter VBR tolerance (±5%), lower leakage (<1 μA), and DO-41 mechanical compatibility with legacy through-hole production lines - making it the preferred choice for new automotive and industrial designs requiring traceable reliability.
Availability
BZW04-19BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer appliance motor drives, and telecom line protection requiring stable component supply across multi-year production cycles.
Supply support for BZW04-19BHE3/54 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure - balancing clamping precision, thermal robustness, and qualification rigor.
FAQ
What is the clamping voltage of BZW04-19BHE3/54 and how is it measured?
The BZW04-19BHE3/54 has a maximum clamping voltage (VC) of 30.6 V at 13 A peak pulse current, measured using a 10/1000 μs double-exponential surge waveform per IEC 61000-4-5. This value represents the upper voltage limit imposed on protected circuitry during worst-case transient events, ensuring downstream components remain within safe operating limits. The BZW04-19BHE3/54 achieves this with low incremental resistance and stable junction characteristics across its full temperature range.
Is BZW04-19BHE3/54 suitable for automotive applications?
Yes, BZW04-19BHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body electronics. Its -55 °C to +175 °C operating junction temperature range, glass-passivated junction, and validation across temperature cycling, high-temperature reverse bias (HTRB), and ESD tests confirm suitability for engine control units, ADAS sensors, and infotainment system interfaces. The HE3 suffix denotes AEC-Q101 compliance and JESD201 class 2 whisker resistance - key requirements for BZW04-19BHE3/54 deployment in automotive production.
How does the bidirectional configuration of BZW04-19BHE3/54 affect circuit design?
The bidirectional configuration of BZW04-19BHE3/54 eliminates polarity concerns during placement - no cathode band marking is present, and the device clamps identically for positive or negative transients. This simplifies layout for AC-coupled lines, differential buses (e.g., RS-485), and ungrounded sensor outputs. Unlike unidirectional TVS diodes, the BZW04-19BHE3/54 requires no orientation check during assembly and provides symmetrical protection without additional series components, reducing BOM count and improving design robustness.
What is the standoff voltage (VWM) of BZW04-19BHE3/54 and why does it matter?
The standoff voltage (VWM) of BZW04-19BHE3/54 is 18.8 V - the maximum continuous reverse voltage at which leakage remains ≤1 μA. This parameter defines the operational margin between normal circuit operation and transient activation: it must exceed the system's maximum steady-state voltage (e.g., 12 V automotive nominal, 24 V industrial) while staying safely below the breakdown threshold. For BZW04-19BHE3/54, the 18.8 V VWM allows reliable protection of 12 V and 24 V systems without false triggering during load dump or battery transients.
Can BZW04-19BHE3/54 be used in place of unidirectional TVS diodes?
No - BZW04-19BHE3/54 is strictly bidirectional and cannot replace unidirectional TVS diodes in circuits requiring DC blocking or forward conduction paths, such as power rail clamping where forward voltage drop matters. Its symmetrical I-V curve means it conducts in both directions once VWM is exceeded, making it unsuitable for single-polarity protection where reverse leakage must be near-zero during normal operation. Always verify polarity requirements before substituting BZW04-19BHE3/54 for unidirectional variants like BZW04-19HE3.
BZW04-19BHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
BZW04-19BHE3/54 FAQ
1.How can I place an order for BZW04-19BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-19BHE3/54 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 BZW04-19BHE3/54 reliable?
The price and inventory of BZW04-19BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-19BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-19BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-19BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-19BHE3/54?
BZW04-19BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-19BHE3/54 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 BZW04-19BHE3/54?
For technical support, including BZW04-19BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-19BHE3/54 requirements.
6.How does Aetrix verify that BZW04-19BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-19BHE3/54 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 BZW04-19BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-19BHE3/54?
All BZW04-19BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-19BHE3/54, 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 BZW04-19BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-19BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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