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Vishay General Semiconductor - Diodes Division BZW04-44HE3/54
- Part No.:
- BZW04-44HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-44HE3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,979
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Product details
Overview
BZW04-44HE3/54 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 range (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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-44HE3/54 datasheet, BZW04-44HE3/54 pinout, BZW04-44HE3/54 application, or BZW04-44HE3/54 equivalent, this AEC-Q101 qualified TVS offers verified bidirectional surge suppression, low leakage (<1 μA at VWM), and stable temperature coefficient (0.102 %/°C), critical for reliable ESD and lightning-induced transient mitigation in harsh environments.
Technical Context
This device operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive stress.
Designed for bidirectional operation, BZW04-44HE3/54 has no polarity marking and symmetric electrical behavior in both directions - enabling single-device protection of AC-coupled or differential signal paths without orientation constraints. It meets JESD22-B102 solderability and JESD201 class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 43.6 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 48.5–53.6 V at 1 mA - precise avalanche onset range ensuring predictable turn-on during transients. |
| VC (Clamping Voltage) | 70.1 V at 5.7 A (10/1000 μs) - limits protected circuit voltage during surge, directly determining IC survivability. |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capacity for standardized lightning/surge waveforms per IEC 61000-4-5. |
| IPPM (Peak Pulse Current) | 5.7 A - maximum non-repetitive surge current the device safely clamps without degradation. |
| TJmax | 175 °C - enables operation in under-hood automotive and high-ambient industrial environments. |
| Leakage Current (ID) | <1 μA at VWM - negligible standby power loss and minimal signal distortion in high-impedance circuits. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; compliant with UL 94 V-0 flammability rating and RoHS. Bidirectional construction means no cathode marking - terminals are functionally identical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both ends serve as bidirectional surge conduction terminals; no polarity dependency simplifies PCB layout and assembly. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term parameter drift <0.5% over lifetime under thermal cycling. |
| 400 W peak pulse power (10/1000 μs) | Meets Level 4 IEC 61000-4-5 surge immunity requirements for industrial fieldbus and power supply inputs. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), enhancing protection of sensitive CMOS inputs. |
| JESD201 class 2 whisker resistance | Prevents tin whisker growth in high-reliability systems, supporting >15-year deployment in telecom infrastructure. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed across signal line and ground, clamping surges within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V interface ICs by limiting transient voltage to ≤70.1 V during 5.7 A events. |
Use Scenario: Safeguarding digital input modules against induced surges from relay coil switching and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Primary front-end protection element on 24 V DC input channels, absorbing repetitive 400 W pulses at 0.01% duty cycle. Use Value: Eliminates need for external series impedance or RC filtering while maintaining signal integrity up to 1 MHz bandwidth. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding Ethernet PHY magnetics and DSL line drivers from lightning-induced common-mode surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Bidirectional clamping device bridging tip/ring to ground in xDSL or PoE-powered equipment. Use Value: Symmetric VBR and VC ensure equal protection for positive/negative transients without polarity concerns. |
Use Scenario: Secondary-side overvoltage clamp on 5 V USB-C power delivery rails to absorb ESD and hot-swap spikes. IC Role / Device Role / Timing Role: Fast-response shunt limiter placed after DC-DC converter output, reacting in <1 ns to sub-microsecond events. Use Value: Low 1 μA leakage avoids battery drain in always-on portable devices; DO-41 footprint supports automated placement. |
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 at 5.8 A; 600 W PPPM | Higher power rating but larger footprint; requires PCB area increase and rework for DO-41-to-SMB transition. | Select when higher surge margin is required and board space allows SMB package; not drop-in compatible. |
| P6KE44CA | DO-15 package; 44 V VWM, 48.8–53.9 V VBR, 71.4 V VC at 5.6 A; 600 W PPPM; no AEC-Q101 qualification | Higher clamping voltage and unqualified for automotive; suitable only for commercial-grade industrial use. | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated and 71.4 V clamping is acceptable. |
Compared with BZW04-44HE3/54, SMBJ43CA offers higher surge capacity but demands layout revision, while P6KE44CA trades automotive qualification and tighter clamping for lower cost - making BZW04-44HE3/54 the optimal balance of AEC-Q101 compliance, DO-41 fit, and 70.1 V clamping performance.
Availability
BZW04-44HE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter ESD hardening requiring stable component supply across production lifecycles.
Supply support for BZW04-44HE3/54 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, optoelectronics, and passive components for demanding industrial and automotive applications.
The BZW04 series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, bidirectional transient suppression in harsh electromagnetic environments - targeting design-in for AEC-Q101-compliant automotive electronics and IEC 61000-4-5 compliant industrial systems.
FAQ
What is the clamping voltage of BZW04-44HE3/54 at its rated peak pulse current?
The BZW04-44HE3/54 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 under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings. The BZW04-44HE3/54 maintains this clamping performance across its full operating temperature range.
Is BZW04-44HE3/54 suitable for automotive applications?
Yes, BZW04-44HE3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its DO-41 package, 175 °C maximum junction temperature, and JESD201 class 2 whisker resistance meet stringent automotive reliability requirements. The BZW04-44HE3/54 is deployed in engine control units, body control modules, and ADAS sensor interfaces where sustained operation under thermal cycling and vibration is mandatory.
Does BZW04-44HE3/54 have polarity markings?
No, BZW04-44HE3/54 is a bidirectional TVS diode and carries no polarity marking on its DO-41 package. Its symmetrical construction ensures identical electrical behavior in both directions - meaning either lead can connect to the protected line or ground without affecting functionality. This eliminates orientation errors during automated assembly and simplifies layout for AC-coupled or differential signal paths.
What is the standoff voltage (VWM) of BZW04-44HE3/54, and why does it matter?
The standoff voltage (VWM) of BZW04-44HE3/54 is 43.6 V - the maximum continuous DC or RMS voltage the device can withstand without entering avalanche conduction. This parameter establishes the design margin between normal operating voltage and transient clamping onset; selecting a VWM ≥10–20% above system rail voltage prevents false triggering while ensuring rapid response when surges exceed the threshold. For the BZW04-44HE3/54, this makes it ideal for 36 V nominal automotive and 24 V industrial systems.
How does the temperature coefficient of BZW04-44HE3/54 affect its performance?
The BZW04-44HE3/54 has a maximum temperature coefficient of VBR of 0.102 %/°C, meaning its breakdown voltage increases predictably with junction temperature. This positive TC ensures stable clamping behavior across -55 °C to +175 °C operation - preventing premature conduction at low temperatures or delayed response at high temperatures. For the BZW04-44HE3/54, this guarantees consistent protection margins in under-hood automotive and industrial control cabinet environments.
BZW04-44HE3/54 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):
- 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:
- -
- 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)
BZW04-44HE3/54 FAQ
1.How can I place an order for BZW04-44HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-44HE3/54 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 BZW04-44HE3/54 reliable?
The price and inventory of BZW04-44HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-44HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-44HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-44HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-44HE3/54?
BZW04-44HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-44HE3/54 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 BZW04-44HE3/54?
For technical support, including BZW04-44HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-44HE3/54 requirements.
6.How does Aetrix verify that BZW04-44HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-44HE3/54 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 BZW04-44HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-44HE3/54?
All BZW04-44HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-44HE3/54, 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 BZW04-44HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-44HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-44HE3/54 Tags
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