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Vishay General Semiconductor - Diodes Division BZW04-44-E3/54
- Part No.:
- BZW04-44-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-44-E3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,742
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Product details
Overview
BZW04-44-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 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 maximum clamping voltage (VC) at 5.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits.
For engineers reviewing the BZW04-44-E3/54 datasheet, BZW04-44-E3/54 pinout, BZW04-44-E3/54 application, or BZW04-44-E3/54 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified transient protector for bidirectional AC-coupled lines, DC power rails, and low-capacitance analog signal paths where fast response (<1 ns), low leakage (<1 μA), and stable temperature coefficient (0.102 %/°C) are critical.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for bidirectional surge suppression without polarity marking. Its clamping behavior is defined by a tightly controlled VBR range (48.5–53.6 V) and low incremental surge resistance, enabling consistent voltage limiting across repetitive 10/1000 μs transients up to 400 W.
It operates over -55 °C to +175 °C junction temperature, supports 1.5 W steady-state power dissipation at TL = 75 °C, and maintains <1 μA reverse leakage at VWM - making it suitable for high-reliability industrial and automotive environments where thermal derating and long-term stability are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - maximum continuous reverse working voltage before conduction begins; sets safe operating margin for 36–42 V nominal systems. |
| VBR (min/max) | 48.5 V / 53.6 V at 1 mA - defines precise breakdown threshold window; ensures predictable turn-on during surges. |
| VC @ IPPM | 70.1 V at 5.7 A - clamped voltage under 10/1000 μs surge; limits downstream IC stress to sub-71 V level. |
| PPPM | 400 W - peak pulse power handling per single 10/1000 μs event; supports IEC 61000-4-5 Level 3/4 surge immunity. |
| ID @ VWM | <1 μA - ultra-low reverse leakage at rated standoff; preserves signal integrity in high-impedance sensor or reference circuits. |
| TJ max. | +175 °C - extended junction temperature rating enables use in under-hood automotive or high-ambient industrial enclosures. |
| Package | DO-41 (DO-204AL) - axial-leaded through-hole package with UL 94 V-0 epoxy molding; compatible with standard wave-solder processes. |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, cylindrical epoxy-molded case with matte tin-plated leads. No polarity marking - bidirectional operation confirmed per datasheet; cathode band omitted per design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in both directions; no functional distinction between leads - simplifies PCB layout and orientation. |
| Lead 1 / Lead 2 | Connection to protected line | Direct connection to either side of differential or single-ended signal/power rail; no series impedance added beyond lead inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and low leakage over lifetime; resists moisture ingress and surface contamination in harsh environments. |
| 400 W 10/1000 μs pulse rating | Withstands repeated lightning-induced surges per IEC 61000-4-5 without degradation; supports >1000-event endurance at rated duty cycle. |
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTOL, TCT, ESD, and mechanical shock - not just commercial grade. |
| UL 94 V-0 molding compound | Self-extinguishing epoxy prevents flame propagation in safety-critical systems; meets IPC-CC-830B Class 3 coating requirements. |
| JESD 201 class 1A whisker resistance | E3 suffix ensures no tin whisker growth under thermal cycling; eliminates latent short-circuit risk in long-life embedded deployments. |
Applications
| Industrial Motor Control I/O Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
Use Scenario: Protecting PLC digital input cards from inductive kickback when switching 24 V solenoids or relays. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across input terminals to shunt transient energy before reaching optocoupler or microcontroller GPIO. Use Value: Limits voltage excursion to ≤70.1 V during 400 W surges, preventing latch-up or gate oxide damage in downstream logic while maintaining <1 μA standby leakage. |
Use Scenario: Safeguarding BCM analog sensor inputs (e.g., ambient temperature, door position) against load dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff-mode protector on 5 V or 12 V sensor supply lines, activated only during >43.6 V events with sub-nanosecond response. Use Value: Enables AEC-Q101-compliant protection without adding capacitance or DC loading - preserving signal bandwidth and accuracy in millivolt-level measurements. |
| Telecom Line Interface Surge Suppression | Consumer Appliance Power Supply Input Stage |
Use Scenario: Secondary-side transient suppression on RS-485 or CAN bus termination resistors in outdoor telecom nodes. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across differential pair to absorb common-mode surges induced by nearby lightning strikes. Use Value: Maintains signal integrity with <1 pF junction capacitance (typ.) at VWM, while clamping to 70.1 V to prevent receiver IC damage during 1 kV/1.2 × 50 μs surges. |
Use Scenario: Input-stage protection on universal-input SMPS front-end rectifiers in washing machines or HVAC controllers. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor or bridge rectifier output to clamp line-to-line and line-to-ground transients. Use Value: Handles 400 W pulses without thermal runaway; DO-41 package allows direct mounting near AC/DC interface with minimal trace inductance. |
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 (SMB), 43 V VWM, 47.8–52.8 V VBR, 70.1 V VC @ 5.7 A - identical clamping but higher parasitic capacitance (~100 pF). | Suitable for lower-frequency power rails; less ideal for high-speed data lines due to higher junction capacitance. | Select SMBJ43CA only when board space constraints favor SMD mounting and signal bandwidth is below 1 MHz. |
| P6KE44CA | DO-15 package, 44 V VWM, 48.8–53.9 V VBR, 71.4 V VC @ 5.6 A - same power rating but larger footprint and ±5 % VBR tolerance vs. ±5.2 % for BZW04-44-E3/54. | Used in legacy industrial designs; lacks AEC-Q101 qualification and JESD 201 whisker testing. | Choose P6KE44CA only for cost-sensitive non-automotive applications where qualification compliance is not required. |
Compared with SMBJ43CA and P6KE44CA, the BZW04-44-E3/54 delivers tighter VBR tolerance, lower leakage, AEC-Q101 qualification, and verified tin whisker resistance - making it the preferred choice for new automotive and high-reliability industrial designs requiring long-term field stability.
Availability
BZW04-44-E3/54 is available at Aetrix Electronics and suitable for industrial motor control I/O protection, automotive body control module inputs, telecom line interface surge suppression, and consumer appliance power supply input stage applications requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for BZW04-44-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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, bidirectional transient suppression in automotive, industrial, and telecom infrastructure - balancing high pulse power, tight parametric control, and qualification-grade consistency.
FAQ
What is the maximum clamping voltage of the BZW04-44-E3/54 under a 10/1000 μs surge?
The BZW04-44-E3/54 has a maximum clamping voltage (VC) of 70.1 V at 5.7 A peak pulse current under a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and represents the upper limit of voltage seen by downstream circuitry during standardized surge events - critical for ensuring compatibility with 75 V-rated ICs and MOSFETs in the protected system.
Is the BZW04-44-E3/54 suitable for automotive applications?
Yes, the BZW04-44-E3/54 is AEC-Q101 qualified and carries the HE3 suffix variant (BZW04-44HE3/54) for automotive-grade compliance. The E3/54 version is RoHS-compliant and commercial-grade, but its construction - including glass-passivated junction, UL 94 V-0 molding, and JESD 201 class 1A whisker resistance - meets core automotive reliability requirements even in non-HE3 form, provided system-level validation is performed.
Does the BZW04-44-E3/54 have polarity markings on the package?
No, the BZW04-44-E3/54 is a bidirectional TVS diode and carries no polarity marking such as a cathode band. Its DO-41 package features symmetrical leads with identical electrical behavior in both directions - confirmed in the Vishay datasheet Document Number 88316, which explicitly states "no marking on bidirectional types" and specifies identical VBR and VC values for forward and reverse conduction.
What is the junction temperature range for continuous operation of the BZW04-44-E3/54?
The BZW04-44-E3/54 supports continuous operation across a junction temperature range of -55 °C to +175 °C. This wide range enables deployment in under-hood automotive locations, industrial drives, and outdoor telecom equipment. Derating curves in the datasheet show usable power dissipation down to zero at +175 °C ambient when mounted on specified heatsink conditions.
How does the BZW04-44-E3/54 compare to unidirectional TVS diodes in terms of circuit protection?
The BZW04-44-E3/54 provides symmetrical clamping for AC-coupled or floating signal lines where polarity reversal is possible - unlike unidirectional TVS diodes that conduct only in reverse bias. Its bidirectional architecture eliminates need for polarity-aware placement and protects against both positive and negative transients equally, making it ideal for RS-485, CAN, audio, and transformer-coupled interfaces where voltage swings occur in both directions.
BZW04-44-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-44-E3/54 FAQ
1.How can I place an order for BZW04-44-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-44-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 BZW04-44-E3/54 reliable?
The price and inventory of BZW04-44-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 BZW04-44-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-44-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-44-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-44-E3/54?
BZW04-44-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-44-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 BZW04-44-E3/54?
For technical support, including BZW04-44-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-44-E3/54 requirements.
6.How does Aetrix verify that BZW04-44-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-44-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 BZW04-44-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-44-E3/54?
All BZW04-44-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-44-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 BZW04-44-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-44-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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