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Vishay General Semiconductor - Diodes Division BZW04P33BHE3/73
- Part No.:
- BZW04P33BHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P33BHE3/73.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,356
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Product details
Overview
BZW04P33BHE3/73 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 33.3 V stand-off voltage (VWM), 53.9 V clamping voltage (VC) at 7.4 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, making it suitable for automotive sensor interface protection.
For engineers reviewing the BZW04P33BHE3/73 datasheet, BZW04P33BHE3/73 pinout, BZW04P33BHE3/73 application, or BZW04P33BHE3/73 equivalent, key selection criteria include its bi-directional clamping behavior, low leakage (<1 μA at VWM), 0.1 %/°C temperature coefficient of breakdown voltage, and compliance with AEC-Q101 for automotive-grade reliability.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within picoseconds to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling consistent clamping performance across repetitive 10/1000 μs pulses at 0.01 % duty cycle.
The bi-directional configuration eliminates polarity sensitivity-no cathode marking-and supports symmetric protection on AC-coupled or differential signal paths. With a maximum junction temperature of 175 °C and thermal derating per Figure 2, it sustains operation in under-hood automotive environments and industrial control cabinets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33.3 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VC (Clamping Voltage) | 53.9 V at IPPM = 7.4 A - Peak voltage seen by protected circuit during 10/1000 μs transient; determines downstream component stress level. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability under standardized 10/1000 μs surge; validates protection against IEC 61000-4-5 Level 3 surges. |
| ID (Reverse Leakage) | <1 μA at VWM - Minimal quiescent current draw in normal operation; critical for low-power sensor and battery-backed systems. |
| VBR (Breakdown Voltage) | 37.1–42.9 V at IT = 1 mA - Tight 15 % tolerance window ensures predictable turn-on; enables precise coordination with system overvoltage thresholds. |
| TJ max. | 175 °C - Enables reliable operation in high-ambient environments such as engine control units and motor drives without thermal derating penalties. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including powertrain, body electronics, and ADAS sensors per stress test requirements (HTOL, TC, UHAST). |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, molded epoxy case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. HE3 suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (Bi-directional) | Transient current path terminal | No polarity marking; symmetrical conduction in both directions - simplifies PCB layout and eliminates orientation errors during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures long-term stability of VBR and low parameter drift over temperature and lifetime - critical for automotive field reliability. |
| 400 W peak pulse power (10/1000 μs) | Validates protection against high-energy transients like load dump (ISO 7637-2 Pulse 5a) and ISO 16750-2 supply surges. |
| AEC-Q101 qualification | Confirms suitability for automotive applications requiring extended temperature range (−55 °C to +175 °C) and accelerated life testing. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD per IEC 61000-4-2), improving clamping fidelity. |
| RoHS-compliant, matte tin plating | Enables lead-free reflow compatibility and eliminates whisker risk in high-reliability assemblies per JESD201 Class 2. |
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: Shunt-type transient voltage suppressor placed directly at connector or IC input pins to clamp surges before reaching sensitive silicon. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends while maintaining signal integrity due to low capacitance and fast response. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with upstream fusing and filtering. Use Value: Extends mean time between failures (MTBF) by absorbing repetitive 400 W surges without degradation, reducing field returns. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Protecting RS-485 transceivers and Ethernet PHYs in base station backhaul equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Bi-directional TVS placed differential-mode across data lines to suppress common-mode and differential-mode transients. Use Value: Maintains signal integrity up to 10 Mbps due to low clamping overshoot and absence of polarity constraints on bidirectional buses. |
Use Scenario: Shielding MCU GPIOs and gate drivers in washing machine motor inverters from commutation spikes generated by BLDC motors. IC Role / Device Role / Timing Role: Secondary-level protection downstream of bulk MOVs, handling fast sub-microsecond transients missed by slower devices. Use Value: Eliminates false resets and erratic motor behavior caused by transient-induced MCU brownouts or latch-up. |
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 | Same DO-214AA package; 33 V VWM, 53.3 V VC at 7.5 A - nearly identical clamping, but lower PPPM (600 W vs. 400 W) and no AEC-Q101 qualification. | Preferred for commercial/industrial designs where automotive qualification is not required; higher power rating allows margin for longer surge durations. | Select SMBJ33CA when board space permits larger SMB package and AEC-Q101 is unnecessary. |
| 1.5KE33CA | DO-201AD package; 33 V VWM, 53.3 V VC at 7.5 A; 1500 W PPPM - significantly higher surge capacity but larger footprint and higher leakage (5 μA). | Used in high-energy industrial power supplies and UPS systems where single-event surge magnitude outweighs size constraints. | Choose 1.5KE33CA only when protecting against >1 kV/100 A surges per IEC 61000-4-5; avoid in space-constrained or low-leakage designs. |
Compared with SMBJ33CA and 1.5KE33CA, the BZW04P33BHE3/73 offers the smallest axial package (DO-41), lowest leakage, and certified AEC-Q101 reliability - making it the optimal choice for automotive and compact embedded systems where qualification and size are decisive.
Availability
BZW04P33BHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, AEC-Q101 traceability, and DO-41 form factor compatibility.
Supply support for BZW04P33BHE3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-reliability transient suppression in automotive, industrial, and communications infrastructure - balancing clamping precision, surge robustness, and qualification rigor.
FAQ
What is the meaning of the 'HE3' suffix in BZW04P33BHE3/73?
The HE3 suffix in BZW04P33BHE3/73 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade E3 versions and confirms suitability for automotive applications requiring extended temperature operation and accelerated reliability testing.
Is BZW04P33BHE3/73 unidirectional or bidirectional?
BZW04P33BHE3/73 is a bi-directional TVS diode, as confirmed by the 'B' in its part number and documentation stating "for bi-directional types, use B suffix." It provides symmetrical clamping in both polarities with no cathode marking, enabling use on AC signals or differential lines without orientation concerns.
What is the maximum clamping voltage of BZW04P33BHE3/73 under surge conditions?
The maximum clamping voltage (VC) of BZW04P33BHE3/73 is 53.9 V at a peak pulse current (IPPM) of 7.4 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Can BZW04P33BHE3/73 replace BZW04P33BHE3/54?
Yes - BZW04P33BHE3/73 and BZW04P33BHE3/54 share identical electrical specifications and AEC-Q101 qualification; the difference lies only in packaging: /73 denotes 7" tape-and-reel (350 pcs), while /54 denotes 13" tape-and-reel (550 pcs). Both use the same DO-41 package and HE3 material specification.
What is the junction-to-lead thermal resistance (RθJL) for BZW04P33BHE3/73?
The datasheet does not specify RθJL for BZW04P33BHE3/73. Thermal performance is characterized via power derating curves (Figure 5), showing 1.5 W dissipation at TL = 75 °C on an infinite heatsink. For PCB-level thermal design, users should apply JEDEC JESD51-2 guidelines using the DO-41 package geometry and copper pad area.
BZW04P33BHE3/73 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):
- 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)
BZW04P33BHE3/73 FAQ
1.How can I place an order for BZW04P33BHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P33BHE3/73 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 BZW04P33BHE3/73 reliable?
The price and inventory of BZW04P33BHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P33BHE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P33BHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P33BHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P33BHE3/73?
BZW04P33BHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P33BHE3/73 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 BZW04P33BHE3/73?
For technical support, including BZW04P33BHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P33BHE3/73 requirements.
6.How does Aetrix verify that BZW04P33BHE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P33BHE3/73 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 BZW04P33BHE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P33BHE3/73?
All BZW04P33BHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P33BHE3/73, 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 BZW04P33BHE3/73 part is unused and in its original packaging.
Return procedure for BZW04P33BHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P33BHE3/73 Tags
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