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Vishay General Semiconductor - Diodes Division BZW04-33B-E3/54
- Part No.:
- BZW04-33B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-33B-E3/54.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:14,239
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Product details
Overview
BZW04-33B-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 33.3 V stand-off voltage (VWM), 37.1–41.0 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤53.9 V at 7.4 A peak pulse current (10/1000 μs waveform), delivering 400 W peak pulse power for surge protection in automotive and industrial interfaces.
For engineers reviewing the BZW04-33B-E3/54 datasheet, BZW04-33B-E3/54 pinout, BZW04-33B-E3/54 application, or BZW04-33B-E3/54 equivalent, this device serves as a robust, AEC-Q101-qualified transient suppressor for bidirectional signal line protection where low clamping voltage, fast response (<1 ns), and stable temperature coefficient (0.100 %/°C) are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR min/max, ID leakage, and VC clamping performance across forward and reverse directions. Its glass-passivated junction ensures stable surge handling and low incremental surge resistance under repetitive 10/1000 μs pulses at 0.01% duty cycle.
The device is rated for 175 °C maximum junction temperature and derates linearly above 25 °C ambient per Fig. 2; its 1.5 W steady-state power dissipation (PD) and 0.67 μA max reverse leakage at VWM support reliable operation in thermally constrained PCB layouts without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33.3 V - Maximum continuous working voltage before conduction; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 37.1 V / 41.0 V at 1 mA - Tight breakdown tolerance ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | ≤53.9 V at 7.4 A - Clamping voltage limits downstream IC stress; enables protection of 3.3 V/5 V logic interfaces with adequate safety margin. |
| PPPM | 400 W - Peak pulse power rating for 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge compliance. |
| ID @ VWM | ≤1.0 μA - Ultra-low leakage preserves signal integrity and battery life in always-on sensor or communication circuits. |
| TJ max. | 175 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures without thermal derating penalties. |
| Package | DO-41 (DO-204AL) - Industry-standard axial leaded package with UL 94 V-0 epoxy; compatible with wave soldering (275 °C, 10 s max). |
Pinout & Package
DO-41 package: axial-leaded, non-polarized bidirectional device; no cathode marking. Leads are matte tin-plated, solderable per J-STD-002 and JESD22-B102. Body diameter 2.0–2.7 mm, lead diameter 0.71–0.86 mm, overall length ≥25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge conduction path | No polarity distinction; either lead connects to protected line-enables drop-in placement on differential or AC-coupled signals. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures long-term reliability and stable VBR drift over temperature and lifetime; eliminates passivation-related leakage degradation. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces per stress test requirements. |
| 400 W peak pulse power (10/1000 μs) | Withstands repeated surges up to 7.4 A without parametric shift-supports >100,000 surge events in typical industrial duty cycles. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes let-through energy to protected circuitry; superior to many competing 400 W TVS devices with ratios >1.55. |
| 0.100 %/°C VBR tempco | Provides predictable clamping voltage stability across -55 °C to +175 °C; critical for wide-temperature automotive and aerospace deployments. |
Applications
| Automotive CAN Bus Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair against ESD (IEC 61000-4-2) and load dump-induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential bus lines, responding within <1 ns to divert surge current to ground. Use Value: Maintains signal integrity below 54 V clamping threshold while surviving 400 W surges-preserves CAN timing margins and prevents controller reset. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring transients. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground transient suppressor mounted at terminal block entry, shunting induced spikes before conditioning amplifiers. Use Value: 33.3 V VWM aligns with 24 V loop supply headroom; sub-1 μA leakage avoids measurement error in precision current sensing. |
| Consumer Appliance Motor Drive Interface | Telecom DSL Line Protection |
Use Scenario: Shielding microcontroller GPIOs and gate drivers connected to brushed DC motor commutation circuits. IC Role / Device Role / Timing Role: Fast-response TVS absorbing inductive kickback from motor coils during PWM switching transitions. Use Value: 7.4 A IPPM rating handles typical motor flyback currents; DO-41 package allows manual rework and high-voltage creepage spacing (>5 mm). |
Use Scenario: Front-end protection of ADSL/VDSL line interface ICs against lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary surge limiter on line side of transformer-coupled input stage, clamping common-mode transients before isolation barrier. Use Value: Symmetrical bidirectional behavior matches AC line signaling; 53.9 V VC ensures downstream transformer and PHY IC remain within absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Same VWM (33.3 V) and VC (53.3 V), but SMC package (surface-mount); 600 W PPPM rating; higher IPPM (11.8 A). | Requires PCB redesign for SMD layout; better suited for high-density, automated assembly; less suitable for through-hole prototyping or high-voltage creepage needs. | Select SMBJ33CA when board space is constrained and volume production justifies SMT tooling investment. |
| P6KE33CA | Same DO-15 package and bidirectional function; lower PPPM (600 W), but higher VC (55.5 V) and looser VBR tolerance (31.4–37.1 V). | Less precise clamping; larger DO-15 footprint; not AEC-Q101 qualified-limits use to commercial-grade industrial equipment only. | Choose P6KE33CA only for cost-sensitive, non-automotive applications where 1.6 V higher clamping voltage is acceptable. |
Compared with SMBJ33CA and P6KE33CA, BZW04-33B-E3/54 offers AEC-Q101 qualification, tighter VBR tolerance (±5.3%), and DO-41 mechanical robustness-making it the preferred choice for automotive and high-reliability through-hole designs requiring validated surge immunity.
Availability
BZW04-33B-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC analog input stages, and telecom line interface designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZW04-33B-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The BZW04 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, bidirectional transient suppression in harsh electromagnetic environments-targeting AEC-Q101-compliant automotive subsystems and industrial control hardware.
FAQ
What is the maximum clamping voltage of BZW04-33B-E3/54 under standard surge conditions?
The BZW04-33B-E3/54 clamps to a maximum of 53.9 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 7.4 A. This value is measured per IEC 61000-4-5 test conditions and represents the upper limit of voltage let-through during surge events-critical for ensuring downstream ICs remain within their absolute maximum ratings. The clamping voltage is guaranteed across the full operating temperature range (-55 °C to +175 °C).
Is BZW04-33B-E3/54 suitable for automotive applications?
Yes, BZW04-33B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction-including glass-passivated junction, DO-41 package with UL 94 V-0 molding compound, and 175 °C maximum junction temperature-meets stringent automotive reliability requirements. It is deployed in engine control units, body control modules, and ADAS sensor interfaces where immunity to load dump, jump start, and ESD transients is mandatory.
How does the bidirectional nature of BZW04-33B-E3/54 affect its circuit placement?
The BZW04-33B-E3/54 has no polarity marking and conducts identically in both directions, allowing flexible placement across differential signal pairs (e.g., CAN, RS-485) or AC-coupled lines without orientation concerns. This eliminates risk of incorrect installation and simplifies layout-especially in space-constrained or high-mix manufacturing environments where unidirectional devices require strict anode/cathode alignment.
What is the reverse leakage current specification for BZW04-33B-E3/54 at its stand-off voltage?
At its 33.3 V stand-off voltage (VWM), the BZW04-33B-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage ensures minimal impact on high-impedance sensor circuits, battery-powered nodes, and precision analog front-ends-preserving accuracy and extending operational lifetime in always-on monitoring systems.
Does BZW04-33B-E3/54 require heatsinking for continuous operation?
No, BZW04-33B-E3/54 does not require external heatsinking for its 1.5 W steady-state power dissipation (PD) rating. The device is designed for operation on standard FR-4 PCBs with minimum copper area; thermal performance is validated up to 175 °C junction temperature. Heatsinking is only relevant during transient events, where energy is absorbed capacitively and dissipated as short-duration heat-well within the device's 400 W peak pulse capability.
BZW04-33B-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-33B-E3/54 FAQ
1.How can I place an order for BZW04-33B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-33B-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 BZW04-33B-E3/54 reliable?
The price and inventory of BZW04-33B-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 BZW04-33B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-33B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-33B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-33B-E3/54?
BZW04-33B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-33B-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 BZW04-33B-E3/54?
For technical support, including BZW04-33B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-33B-E3/54 requirements.
6.How does Aetrix verify that BZW04-33B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-33B-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 BZW04-33B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-33B-E3/54?
All BZW04-33B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-33B-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 BZW04-33B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-33B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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