My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZW04-19HE3/54
- Part No.:
- BZW04-19HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-19HE3/54.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,643
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW04-19HE3/54 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 stand-off voltage (VWM), 20.9–23.1 V breakdown voltage (VBR) at 1 mA, 30.6 V clamping voltage (VC) at 13.0 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-19HE3/54 datasheet, BZW04-19HE3/54 pinout, BZW04-19HE3/54 application, or BZW04-19HE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, bidirectional polarity, low clamping ratio (VC/VBR ≈ 1.31), DO-41 mechanical compatibility, and 175 °C maximum junction temperature for under-hood and high-reliability embedded use.
Technical Context
This device operates as a voltage-clamping surge protector with symmetrical bidirectional conduction, enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the 10/1000 μs waveform rating reflects standardized lightning and ESD surge immunity testing per ANSI/IEEE C62.35.
The BZW04-19HE3/54 exhibits a temperature coefficient of VBR of +0.092 %/°C, indicating predictable voltage drift across operating range, and supports repetitive surge duty cycles up to 0.01 % - critical for sustained operation in motor drive feedback paths and CAN bus termination circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.8 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - verified breakdown threshold ensuring reliable turn-on during transients above system rail. |
| VC @ IPPM | 30.6 V at 13.0 A - clamping voltage limits downstream IC stress during 400 W surge events; clamping ratio = 1.31. |
| PPPM | 400 W - peak pulse power handling with 10/1000 μs waveform, meeting IEC 61000-4-5 Level 3 surge requirements. |
| TJ max. | +175 °C - enables deployment in engine control units and industrial PLCs without thermal derating penalties. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per AEC standard. |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with 0.375" lead length, UL 94 V-0 molding, and matte tin plating. |
Pinout & Package
DO-41 package: axial-leaded, cylindrical epoxy-molded case with no polarity marking for bidirectional operation; leads are matte tin-plated and solderable per J-STD-002/JESD22-B102; meets JESD201 Class 2 whisker resistance (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | No functional distinction between leads; either terminal serves as input/output for AC-coupled or floating signal lines. |
| Lead 1 | Terminal for PCB mounting and heat sinking | Provides mechanical anchoring and limited thermal dissipation; 0.375" (9.5 mm) lead length supports through-hole insertion and board-level strain relief. |
| Lead 2 | Terminal for PCB mounting and heat sinking | Identical to Lead 1; symmetric construction eliminates orientation constraints during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1.0 μA) over lifetime, even under humidity and thermal stress. |
| 400 W peak pulse power (10/1000 μs) | Withstands repeated ISO 7637-2 Pulse 1/2a/5a surges in automotive 12 V systems without degradation. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS modules requiring zero-failure field performance. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed enclosures, satisfying safety requirements for industrial control cabinets and EV charging systems. |
| Matte tin plating, JESD201 Class 2 | Eliminates tin whisker risk in high-reliability applications with >10-year service life, such as railway signaling and medical equipment. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting analog/digital sensor outputs (e.g., wheel speed, pressure, temperature) from load dump and inductive switching transients in 12 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across sensor output and ground, limiting voltage excursions to ≤30.6 V during 13 A surges. Use Value: Prevents latch-up or permanent damage to downstream ADCs and microcontrollers while maintaining signal integrity below 18.8 V normal operation. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Standoff protector mounted at connector entry point, shunting transients before they reach optocoupler or Schmitt trigger input stages. Use Value: Enables >100,000 surge cycles without parameter shift, reducing maintenance downtime in factory automation environments. |
| Telecom Line Interface Protection | Consumer Appliance Motor Control Feedback Protection |
Use Scenario: Shielding RS-485/RS-232 transceiver pins from ESD and lightning-induced surges in building management systems and base station backhaul links. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bidirectional clamp placed differential-mode across data lines, preserving signal rise/fall times. Use Value: Maintains signal integrity up to 10 Mbps while suppressing ±15 kV contact ESD per IEC 61000-4-2 without added series impedance. |
Use Scenario: Securing hall-effect or encoder feedback signals in washing machine, HVAC, and power tool motor drives exposed to commutation noise. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamp integrated directly at motor controller IC inputs, absorbing flyback energy from brushed DC motors. Use Value: Extends MCU lifespan by eliminating transient-induced resets and flash corruption during frequent start-stop cycles. |
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 (SMB), 19 V VWM, 33.2 V VC @ 12.1 A, same PPPM (400 W); lower thermal mass, surface-mount only. | Preferred for space-constrained PCBs where reflow assembly is used; less suitable for high-vibration environments due to solder joint fatigue risk. | Select SMBJ19CA when board real estate is limited and automated SMT placement is available; verify mechanical retention for shock-prone applications. |
| P6KE19CA | DO-15 package, 19 V VWM, 33.2 V VC @ 12.1 A, 600 W PPPM (10/1000 μs); higher surge rating but larger footprint and lower AEC-Q101 compliance assurance. | Used in legacy industrial power supplies where higher single-pulse margin is prioritized over automotive qualification and long-term reliability. | Choose P6KE19CA only for non-automotive, cost-sensitive designs requiring higher single-event margin; avoid where AEC-Q101 traceability is mandatory. |
Compared with SMBJ19CA and P6KE19CA, the BZW04-19HE3/54 offers superior mechanical robustness via axial DO-41 leads, guaranteed AEC-Q101 qualification, and optimized thermal stability for continuous operation in ambient temperatures up to +125 °C - making it the preferred choice for automotive and high-reliability industrial deployments.
Availability
BZW04-19HE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input conditioning, and telecom line interface applications requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for BZW04-19HE3/54 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 TVS devices with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04 series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecommunications systems where consistent clamping performance and long-term stability are mission-critical.
FAQ
What is the clamping voltage of the BZW04-19HE3/54 under maximum surge conditions?
The BZW04-19HE3/54 has a maximum clamping voltage (VC) of 30.6 V at 13.0 A peak pulse current (IPPM), measured with a 10/1000 μs waveform. This value ensures downstream circuitry remains within safe operating limits during standardized surge events, and is confirmed in the Vishay datasheet Document Number 88316, Table on page 2.
Is the BZW04-19HE3/54 suitable for automotive applications?
Yes, the BZW04-19HE3/54 is AEC-Q101 qualified (note "HE3" suffix), with validation for temperature cycling, high-temperature reverse bias, and ESD robustness. Its 175 °C maximum junction temperature and DO-41 mechanical stability make it appropriate for engine control, body electronics, and ADAS subsystems where reliability is critical.
Does the BZW04-19HE3/54 have polarity markings on the package?
No, the BZW04-19HE3/54 is a bidirectional TVS diode and carries no polarity marking - the DO-41 package is unmarked and symmetrical. This allows flexible placement across AC-coupled or floating signal paths without orientation constraints, unlike unidirectional variants that feature a cathode band.
What is the standoff voltage (VWM) and how does it relate to system voltage?
The BZW04-19HE3/54 has a standoff voltage (VWM) of 18.8 V, meaning it remains non-conductive up to this DC or RMS voltage level. This provides a safe margin above nominal 12 V automotive systems and 24 V industrial rails, preventing false triggering while allowing rapid clamping once transients exceed the breakdown threshold.
Can the BZW04-19HE3/54 be used in place of the older BZW04-19 or BZW04-19B?
Yes - the BZW04-19HE3/54 replaces both BZW04-19 (commercial grade) and BZW04-19B (bidirectional commercial) with identical electrical specs and adds AEC-Q101 qualification and JESD201 Class 2 whisker resistance. The "HE3" suffix confirms RoHS compliance, automotive qualification, and enhanced plating reliability over legacy versions.
BZW04-19HE3/54 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:
- 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)
BZW04-19HE3/54 FAQ
1.How can I place an order for BZW04-19HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-19HE3/54 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 BZW04-19HE3/54 reliable?
The price and inventory of BZW04-19HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-19HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-19HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-19HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-19HE3/54?
BZW04-19HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-19HE3/54 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 BZW04-19HE3/54?
For technical support, including BZW04-19HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-19HE3/54 requirements.
6.How does Aetrix verify that BZW04-19HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-19HE3/54 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 BZW04-19HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-19HE3/54?
All BZW04-19HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-19HE3/54, 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 BZW04-19HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-19HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-19HE3/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
