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Vishay General Semiconductor - Diodes Division BZW04-44B-E3/54
- Part No.:
- BZW04-44B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-44B-E3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,032
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Product details
Overview
BZW04-44B-E3/54 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 43.6 V standoff voltage (VWM), 48.5–53.6 V breakdown voltage (VBR) at 1 mA, 70.1 V clamping voltage (VC) at 5.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - ideal for safeguarding automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching transients.
For engineers reviewing the BZW04-44B-E3/54 datasheet, BZW04-44B-E3/54 pinout, BZW04-44B-E3/54 application, or BZW04-44B-E3/54 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified bidirectional TVS for high-reliability DC line protection where precise clamping, low leakage (<1 μA), and stable temperature coefficient (0.102 %/°C) are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping behavior and breakdown characteristics across reverse and forward directions. Its glass-passivated junction ensures stable VBR tolerance (±5 % typical), low incremental surge resistance, and fast response time (<1 ns) to transient events.
The device complies with AEC-Q101 for automotive-grade reliability and supports repetitive surge duty cycles up to 0.01 % with 10/1000 μs waveform. Thermal derating follows JEDEC JESD22-A104 guidelines, maintaining full 400 W capability up to 25 °C ambient and linearly reducing to zero at 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - maximum continuous DC or RMS operating voltage before conduction begins |
| VBR min/max | 48.5 V / 53.6 V at 1 mA - guaranteed breakdown threshold range defining turn-on precision |
| VC @ IPPM | 70.1 V at 5.7 A - clamped voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 400 W - peak transient energy absorption capacity under standardized waveform |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage ensuring minimal standby power loss |
| TJ max | +175 °C - extended junction temperature rating enabling under-hood and industrial deployment |
| Temp. coeff. | 0.102 %/°C - predictable VBR drift over temperature for stable protection margins |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads solderable per J-STD-002 and JESD22-B102; no polarity marking - symmetrical bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical bidirectional clamping - either lead functions as anode or cathode depending on transient polarity |
| Lead 1 | Connection node | Direct solder attachment point; no internal distinction - mechanical termination only |
| Lead 2 | Connection node | Direct solder attachment point; electrically identical to Lead 1 in bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| 400 W peak pulse power (10/1000 μs) | Withstands repeated surges from inductive load switching without degradation |
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing meets fire-safety requirements for enclosed industrial systems |
| JESD201 Class 1A whisker resistance | E3 suffix guarantees reliable solder joint integrity in high-vibration environments |
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 ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching sensitive ICs. Use Value: Limits voltage excursion to ≤70.1 V during 5.7 A surge, preserving signal integrity and preventing latch-up in 5 V/12 V sensor front-ends. |
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: Primary overvoltage clamp on 24 V DC input lines, coordinated with series impedance for IEC 61000-4-5 Level 3 compliance. Use Value: Maintains <1 μA leakage at 43.6 V, eliminating false triggering while clamping 400 W surges within 1 ns response window. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and RS-485 data lines in base station equipment. IC Role / Device Role / Timing Role: Fast-acting bidirectional shunt protecting isolated DC-DC converters and level translators from EFT/burst events. Use Value: Symmetric clamping ensures equal protection for positive/negative transients common in differential signaling environments. |
Use Scenario: Output rail protection in wall-mounted AC/DC adapters for smart home devices subject to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5 V/9 V/12 V outputs, absorbing residual transients escaping primary-side MOVs. Use Value: 0.102 %/°C VBR tempco enables consistent clamping margin across -40 °C to +85 °C ambient operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | DO-214AA package; 43 V VWM; 47.8–52.8 V VBR; 69.4 V VC @ 5.8 A; same 400 W PPPM | Surface-mount alternative with higher thermal mass but requires PCB rework for through-hole replacement | Select when board space is constrained and reflow assembly is preferred over axial-leaded hand-soldering. |
| P6KE44CA | DO-15 package; 44 V VWM; 48.8–53.9 V VBR; 71.4 V VC @ 5.6 A; 600 W PPPM (higher power, larger footprint) | Higher surge rating but slower response due to larger junction capacitance; not AEC-Q101 qualified | Choose only for non-automotive industrial use where 600 W headroom justifies larger size and absence of automotive qualification. |
Compared with SMBJ43CA and P6KE44CA, BZW04-44B-E3/54 offers AEC-Q101 qualification, DO-41 axial form factor for through-hole reliability, and tighter VBR tolerance - making it the preferred choice for automotive and high-integrity industrial designs requiring proven qualification and mechanical robustness.
Availability
BZW04-44B-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, traceable sourcing, and long-term lifecycle support.
Supply support for BZW04-44B-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 high-energy transient suppression in harsh environments where AEC-Q101 qualification, stable clamping, and low leakage are mandatory.
FAQ
What is the clamping voltage of BZW04-44B-E3/54 under standard surge conditions?
The BZW04-44B-E3/54 has a maximum clamping voltage (VC) of 70.1 V at 5.7 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is BZW04-44B-E3/54 suitable for automotive applications?
Yes, BZW04-44B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its DO-41 package, glass-passivated junction, and operation from –55 °C to +175 °C junction temperature meet stringent requirements for engine control units, body electronics, and ADAS sensor interfaces subjected to thermal cycling and vibration.
How does the bidirectional nature of BZW04-44B-E3/54 affect its circuit implementation?
As a bidirectional TVS, BZW04-44B-E3/54 provides identical clamping performance in both polarities - eliminating need for polarity awareness during placement. It is installed across protected lines (e.g., between signal and ground or across differential pairs) without orientation constraints, simplifying layout and reducing BOM complexity versus unidirectional alternatives.
What is the maximum steady-state power dissipation of BZW04-44B-E3/54?
The BZW04-44B-E3/54 has a maximum steady-state power dissipation (PD) of 1.5 W at TL = 75 °C on an infinite heatsink. In typical PCB mounting, derating applies per Figure 5 in the datasheet; at 25 °C ambient, continuous power handling remains near 1.5 W, sufficient for leakage-current-limited standby conditions but not for sustained forward conduction.
Does BZW04-44B-E3/54 require external series impedance for effective protection?
Yes, BZW04-44B-E3/54 must be used with appropriate series impedance (e.g., resistor or ferrite bead) to limit peak current into the protected IC and coordinate with system-level surge standards like IEC 61000-4-5. The device itself clamps voltage but does not limit current - proper impedance matching ensures the 5.7 A IPPM is delivered without exceeding the protected IC's safe operating area.
BZW04-44B-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):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 5.7A
- 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)
BZW04-44B-E3/54 FAQ
1.How can I place an order for BZW04-44B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-44B-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 BZW04-44B-E3/54 reliable?
The price and inventory of BZW04-44B-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 BZW04-44B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-44B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-44B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-44B-E3/54?
BZW04-44B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-44B-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 BZW04-44B-E3/54?
For technical support, including BZW04-44B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-44B-E3/54 requirements.
6.How does Aetrix verify that BZW04-44B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-44B-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 BZW04-44B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-44B-E3/54?
All BZW04-44B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-44B-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 BZW04-44B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-44B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-44B-E3/54 Tags
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