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Vishay General Semiconductor - Diodes Division BZW04-33HE3/54
- Part No.:
- BZW04-33HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-33HE3/54.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,191
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Product details
Overview
BZW04-33HE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal and power lines. It features a 33.3 V standoff voltage (VWM), 37.1–41.0 V breakdown range at 1 mA, 53.9 V max clamping voltage at 7.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the BZW04-33HE3/54 datasheet, BZW04-33HE3/54 pinout, BZW04-33HE3/54 application, or BZW04-33HE3/54 equivalent, this AEC-Q101 qualified TVS offers verified bidirectional surge suppression, low leakage (<1 µA at VWM), and stable temperature coefficient (0.100 %/°C) - critical for reliable overvoltage protection in harsh environments.
Technical Context
This device operates as a voltage-clamping protector with symmetrical bidirectional conduction, enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures robust surge handling and long-term reliability under repetitive 10/1000 µs pulses at 0.01% duty cycle.
The BZW04-33HE3/54 exhibits low incremental surge resistance and fast response time (<1 ns), delivering consistent clamping performance across -55 °C to +175 °C operating junction temperature. It meets JESD22-B102 solderability standards and JESD201 Class 2 whisker resistance requirements due to its matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - maximum continuous reverse working voltage before clamping begins |
| VBR min/max | 37.1 V / 41.0 V at 1 mA - guaranteed breakdown threshold defining turn-on precision |
| VC @ IPPM | 53.9 V at 7.4 A - clamped voltage during 400 W transient, limiting stress on downstream ICs |
| IPPM | 7.4 A - peak pulse current capability with 10/1000 µs waveform, derated above 25 °C |
| PPPM | 400 W - transient energy absorption capacity, sufficient for ISO 7637-2 Pulse 1/2a/3a compliance |
| TJ max | +175 °C - high-temperature operation support for under-hood automotive and industrial control applications |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads; no polarity marking for bidirectional operation - leads are electrically symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (either lead) | Transient conduction path | Identical bidirectional terminals - either lead connects to protected line; no cathode band marking |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable parametric performance and long-term reliability under thermal cycling and humidity stress |
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against load dump and inductive switching surges in 12 V/24 V systems |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTGB, AC/DC life test, and ESD |
| UL 94 V-0 molding compound | Ensures flame-retardant encapsulation for safety-critical industrial and transportation applications |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under high-temperature/humidity conditions, critical for long-life deployments |
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 ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within nanoseconds to suppress >1 kV transients. Use Value: Maintains signal integrity below 53.9 V clamping level while surviving repeated 400 W surges - extending lifetime of $2–$5 transceivers and ADC front-ends. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-mode protector on 24 V DC input channels, conducting only during overvoltage events to shunt energy to chassis ground. Use Value: Enables >100,000-cycle surge endurance at 7.4 A without parameter drift - reducing field failure rates in factory automation systems. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs, operating symmetrically to preserve common-mode rejection during transient events. Use Value: Delivers <1 µA leakage at 33.3 V, minimizing standby power impact while clamping to 53.9 V - preserving signal margin for 25 Mbps data links. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines and HVAC blowers connected to microcontroller GPIOs. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) clamp on motor driver enable/control lines, preventing false triggering of logic-level MOSFETs. Use Value: Withstands 8.3 ms half-sine surges up to 40 A (IFSM), ensuring immunity to repeated motor startup transients without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | DO-214AA package, 33 V VWM, 53.3 V VC @ 7.5 A, same 400 W rating but higher junction capacitance (~150 pF) | Better suited for PCB space-constrained designs; less optimal for high-speed signal lines due to higher CJ | Select SMBJ33CA when board real estate is limited and signal bandwidth <10 MHz; verify layout clearance for SMA footprint. |
| 1.5KE33CA | DO-201AD package, 33 V VWM, 53.3 V VC @ 7.5 A, 1500 W rating but larger size and slower response (~5 ns vs. <1 ns) | Higher power handling but unsuitable for compact automotive modules or fast-edge digital interfaces | Choose 1.5KE33CA only for non-space-sensitive industrial power rails where 1500 W headroom justifies added volume and latency. |
Compared with BZW04-33HE3/54, SMBJ33CA offers smaller footprint but compromises signal integrity at high frequencies, while 1.5KE33CA delivers greater surge margin at the cost of response speed and board area - making BZW04-33HE3/54 the optimal balance for AEC-Q101-compliant, space-aware automotive and industrial edge nodes.
Availability
BZW04-33HE3/54 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 full traceability.
Supply support for BZW04-33HE3/54 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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The BZW04 series was engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment electronics, emphasizing stable clamping, low leakage, and long-term parametric consistency under thermal stress.
FAQ
What is the polarity configuration of BZW04-33HE3/54?
BZW04-33HE3/54 is a bidirectional TVS diode with no polarity marking - both leads are functionally identical and interchangeable. This enables symmetric clamping of positive and negative transients without requiring orientation during placement, simplifying assembly for differential or AC-coupled signal lines.
Is BZW04-33HE3/54 qualified for automotive use?
Yes, BZW04-33HE3/54 carries the HE3 suffix, confirming AEC-Q101 qualification per Vishay's documentation. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD, making it suitable for engine control units, body electronics, and ADAS sensor modules.
What is the maximum clamping voltage of BZW04-33HE3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04-33HE3/54 is 53.9 V at 7.4 A peak pulse current with a 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the HE3 suffix differ from E3 in BZW04-33HE3/54?
The HE3 suffix in BZW04-33HE3/54 indicates AEC-Q101 qualification and JESD201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only. HE3 parts undergo additional automotive-specific reliability testing and tighter process controls to ensure long-term stability in demanding environments.
Can BZW04-33HE3/54 be used in place of unidirectional TVS diodes?
No - BZW04-33HE3/54 is strictly bidirectional and lacks cathode identification. Substituting it for a unidirectional TVS (e.g., BZW04-33E3) would compromise DC blocking capability on power rails and may cause unintended conduction during normal operation; always match polarity type to circuit topology.
BZW04-33HE3/54 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- 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)
BZW04-33HE3/54 FAQ
1.How can I place an order for BZW04-33HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-33HE3/54 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 BZW04-33HE3/54 reliable?
The price and inventory of BZW04-33HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-33HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-33HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-33HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-33HE3/54?
BZW04-33HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-33HE3/54 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 BZW04-33HE3/54?
For technical support, including BZW04-33HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-33HE3/54 requirements.
6.How does Aetrix verify that BZW04-33HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-33HE3/54 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 BZW04-33HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-33HE3/54?
All BZW04-33HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-33HE3/54, 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 BZW04-33HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-33HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-33HE3/54 Tags
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