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Vishay General Semiconductor - Diodes Division BZW04-19B-E3/54
- Part No.:
- BZW04-19B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-19B-E3/54.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,425
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Product details
Overview
BZW04-19B-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features a 18.8 V stand-off voltage (VWM), 20.9–23.1 V breakdown voltage (VBR) at 1 mA test current, 30.6 V maximum clamping voltage (VC) at 13.0 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with 10/1000 μs waveform.
For engineers reviewing the BZW04-19B-E3/54 datasheet, BZW04-19B-E3/54 pinout, BZW04-19B-E3/54 application, or BZW04-19B-E3/54 equivalent, this device serves as a robust, AEC-Q101-qualified protection element for automotive sensor interfaces, industrial I/O lines, and telecom signal conditioning circuits where bidirectional surge immunity and low leakage (<1.0 μA at VWM) are critical.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance under repetitive 10/1000 μs transients at 0.01% duty cycle.
The device is rated for -55 °C to +175 °C operating junction temperature, supports soldering up to 275 °C for 10 s (JESD22-B106), and meets UL 94 V-0 flammability requirements via its molded epoxy DO-41 package. Its 0.092 %/°C temperature coefficient of VBR ensures predictable voltage drift across thermal extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.8 V - Maximum continuous working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR min/max | 20.9 V / 23.1 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events above system rail. |
| VC @ IPPM | 30.6 V at 13.0 A - Clamped voltage during 10/1000 μs surge; limits downstream IC stress to sub-31 V under worst-case transient. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1.0 μA - Reverse leakage at stand-off voltage; minimizes quiescent power loss and avoids false triggering in high-impedance circuits. |
| TJ max | +175 °C - Maximum junction temperature rating; supports under-hood automotive and high-ambient industrial deployments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and ESD testing; suitable for safety-critical ECUs and sensors. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: hermetically sealed glass passivated chip in molded epoxy housing, lead length ≥1.0 inch (25.4 mm), body diameter 0.160–0.205 inch (4.1–5.2 mm), lead diameter 0.028–0.034 inch (0.71–0.86 mm). No polarity marking - bidirectional operation confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Leads function identically in either direction; no cathode band - enables placement without orientation check on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable breakdown voltage and long-term reliability under thermal cycling and humidity exposure. |
| 400 W 10/1000 μs pulse rating | Withstands automotive load dump and inductive switching surges without degradation when mounted per JEDEC standards. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed enclosures - required for industrial control cabinets and telecom base stations. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD22-B102; compatible with lead-free reflow and wave soldering processes. |
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 ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching sensitive interface ICs. Use Value: Limits voltage excursion to ≤30.6 V during 13 A surge, preserving signal integrity and preventing latch-up in 3.3 V/5 V microcontrollers and transceivers. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V DC input channels, operating in parallel with optocoupler input circuitry. Use Value: Withstands repetitive 400 W surges while maintaining <1.0 μA leakage - avoids false triggering and preserves high-impedance sensing accuracy. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Protecting Ethernet PHYs and RS-485 transceivers in network switches and base station backhaul units from lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on differential pair lines, coordinated with primary GDT or MOV stages for staged clamping. Use Value: Fast response time and symmetric clamping ensure balanced suppression across both conductors - maintains common-mode rejection and signal fidelity. |
Use Scenario: Output-side overvoltage clamp in USB-C PD and 12 V wall adapters to prevent damage during regulator fault or feedback loop failure. IC Role / Device Role / Timing Role: Final-stage protector between DC-DC converter output and connector, absorbing residual spikes not filtered by LC stages. Use Value: 18.8 V VWM aligns with 20 V max-rated capacitors and LDOs; 30.6 V VC prevents exceedance of 33 V absolute maximum ratings on downstream USB-PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ19CA | DO-214AA package (SMB), 19 V VWM, 21.1–23.3 V VBR, same 400 W PPPM but higher 32.4 V VC at 12.3 A IPPM. | Surface-mount footprint; lower thermal resistance but requires PCB real estate and reflow process compatibility. | Select SMBJ19CA when board space permits SMT layout and higher clamping voltage is acceptable for downstream components. |
| P6KE19CA | DO-15 package, 19 V VWM, 21.1–23.3 V VBR, 400 W PPPM, 32.4 V VC at 12.3 A - identical electrical specs but larger body and higher thermal mass. | Through-hole alternative with greater mechanical robustness and higher surge endurance in high-vibration environments. | Choose P6KE19CA for legacy through-hole designs or applications requiring enhanced mechanical retention and thermal inertia. |
Compared with BZW04-19B-E3/54, SMBJ19CA offers SMT compatibility at the cost of slightly higher clamping voltage and reduced creepage, while P6KE19CA provides identical protection performance in a physically larger, vibration-resistant axial package - making BZW04-19B-E3/54 the optimal balance of compact DO-41 form factor, AEC-Q101 qualification, and precise 30.6 V clamping for space-constrained automotive and industrial nodes.
Availability
BZW04-19B-E3/54 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 BZW04-19B-E3/54 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The BZW04 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the polarity configuration of BZW04-19B-E3/54?
BZW04-19B-E3/54 is a bidirectional TVS diode with symmetrical anode/cathode terminals and no polarity marking. Its electrical characteristics apply identically in both directions, enabling use on AC-coupled signals, differential buses like RS-485, or ungrounded power rails without orientation constraints - unlike unidirectional variants such as BZW04-19-E3/54 which feature a cathode band.
Does BZW04-19B-E3/54 meet automotive qualification standards?
Yes, BZW04-19B-E3/54 is AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and electrostatic discharge (ESD) per JESD22-A114. This qualification confirms its suitability for automotive applications such as engine control units, ADAS camera modules, and body electronics where reliability under thermal and electrical stress is critical - verified per Vishay document 88316 revision 16-Sep-2021.
What is the maximum clamping voltage of BZW04-19B-E3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04-19B-E3/54 is 30.6 V at 13.0 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during a full-rated transient event and is measured per ANSI/IEEE C62.35 - ensuring predictable protection margins for 24 V systems and 3.3 V/5 V logic interfaces.
How does the DO-41 package of BZW04-19B-E3/54 affect thermal performance?
The DO-41 (DO-204AL) axial package of BZW04-19B-E3/54 delivers 1.5 W power dissipation on an infinite heatsink at TL = 75 °C, with thermal resistance from junction to leads (RθJL) optimized for through-hole mounting. Its glass-passivated chip and matte tin-plated leads support soldering up to 275 °C for 10 s (JESD22-B106), enabling robust thermal coupling to PCB copper pours or chassis mounts in high-ambient environments.
Is BZW04-19B-E3/54 RoHS compliant and what does the "E3/54" suffix indicate?
Yes, BZW04-19B-E3/54 is RoHS-compliant per EU Directive 2011/65/EU. The "E3" suffix denotes commercial-grade RoHS compliance with JESD201 Class 1A whisker resistance, while "/54" specifies packaging in 13-inch paper tape and reel with 550 units per reel - confirmed in Vishay's ordering information table (document 88316, page 4).
BZW04-19B-E3/54 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-19B-E3/54 FAQ
1.How can I place an order for BZW04-19B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-19B-E3/54 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 BZW04-19B-E3/54 reliable?
The price and inventory of BZW04-19B-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-19B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-19B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-19B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-19B-E3/54?
BZW04-19B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-19B-E3/54 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 BZW04-19B-E3/54?
For technical support, including BZW04-19B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-19B-E3/54 requirements.
6.How does Aetrix verify that BZW04-19B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-19B-E3/54 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 BZW04-19B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-19B-E3/54?
All BZW04-19B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-19B-E3/54, 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 BZW04-19B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-19B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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