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Vishay General Semiconductor - Diodes Division BZW04-44BHE3/54
- Part No.:
- BZW04-44BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-44BHE3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,046
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Product details
Overview
BZW04-44BHE3/54 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 400 W peak pulse power (10/1000 μs), 43.6 V stand-off voltage (VWM), 70.1 V maximum clamping voltage (VC) at 5.7 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs, sensor interfaces, and IC power rails against ESD and inductive switching surges.
For engineers reviewing the BZW04-44BHE3/54 datasheet, BZW04-44BHE3/54 pinout, BZW04-44BHE3/54 application, or BZW04-44BHE3/54 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal derating curves, and direct alternatives with documented differences in breakdown voltage tolerance and temperature coefficient.
Technical Context
This device operates bidirectionally with symmetrical breakdown characteristics: minimum VBR = 48.5 V and maximum VBR = 53.6 V at 1.0 mA test current, and exhibits a temperature coefficient of VBR of +0.102 %/°C. Its glass-passivated junction ensures stable leakage performance - maximum reverse leakage ID = 1.0 μA at VWM = 43.6 V.
It sustains non-repetitive peak forward surge current up to 40 A (8.3 ms half-sine) in unidirectional variants, but as a bidirectional part, it handles symmetric surge waveforms without polarity dependence. Junction temperature range spans –55 °C to +175 °C, and power dissipation is rated at 1.5 W on infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.6 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR min/max | 48.5 V / 53.6 V at 1.0 mA - Confirmed breakdown voltage window; determines earliest clamping onset and design margin for overvoltage events. |
| VC @ IPPM | 70.1 V at 5.7 A - Clamped voltage during 10/1000 μs surge; directly limits stress on downstream components like microcontrollers or transceivers. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; enables robust protection against lightning-induced or inductive-switching transients. |
| ID @ VWM | ≤ 1.0 μA - Ultra-low reverse leakage at stand-off voltage; preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | +175 °C - Maximum junction temperature rating; supports operation in under-hood automotive or industrial environments without thermal shutdown. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress-test requirements including HTOL, TC, and HTRB; suitable for ASIL-B supporting functions. |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. No polarity marking - consistent with bidirectional functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical terminal behavior in both directions; no cathode band marking required; enables placement without orientation constraints on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable long-term leakage performance and resistance to humidity-induced degradation in harsh environments. |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-earth) surge immunity without external circuit derating. |
| AEC-Q101 qualification | Validates reliability for automotive applications including body control modules, sensor hubs, and infotainment power supplies. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection fidelity for high-speed interfaces. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified, JESD201 Class 2 whisker-resistant matte tin plating - critical for extended-life automotive assemblies. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across sensor supply and ground pins to limit transient excursions within ADC input range. Use Value: Prevents latch-up or damage to 12-bit SAR ADCs by holding clamped voltage ≤ 70.1 V while absorbing 400 W surges - enabling compliance with ISO 7637-2 Pulse 1/2a/5a. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact inputs, positioned before optocoupler or Schmitt-trigger input stage. Use Value: Limits voltage seen by input conditioning circuitry to ≤ 70.1 V during 10/1000 μs transients, preserving signal integrity and eliminating false triggering in noisy factory environments. |
| Telecom Line Interface Protection | Consumer Power Supply Clamp |
Use Scenario: Shielding RS-485 transceiver bus lines (A/B) in base station backhaul equipment from induced lightning surges. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line to ground) providing symmetrical clamping without polarity sensitivity. Use Value: Maintains common-mode rejection ratio (CMRR) by matching clamping thresholds on both lines; VC = 70.1 V ensures transceiver survival under IEC 61000-4-5 4 kV tests. |
Use Scenario: Clamping secondary-side DC output rails (e.g., 48 V telecom adapter) against capacitor discharge and rectifier recovery spikes. IC Role / Device Role / Timing Role: Secondary-side transient suppressor placed between output and ground, parallel to bulk capacitance. Use Value: Absorbs repetitive 400 W pulses without parameter drift, extending electrolytic capacitor life and preventing overvoltage trips in constant-voltage regulation loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Higher VWM = 43 V (vs. 43.6 V), lower PPPM = 600 W, SMC package (larger footprint, better thermal mass) | Preferred where board space allows larger package and higher surge margin is needed beyond 400 W | Select SMBJ43CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 and thermal management permits SMC footprint. |
| 1.5KE43CA | Same VWM ≈ 43 V, identical DO-41 package, but higher VC = 73.5 V at 5.4 A and lower IPPM = 5.4 A | Acceptable where clamping voltage margin > 70.1 V is tolerable and AEC-Q101 is not required | Choose 1.5KE43CA only for cost-sensitive commercial designs lacking automotive qualification requirements. |
Compared with BZW04-44BHE3/54, SMBJ43CA offers superior surge handling in a larger package but lacks AEC-Q101 validation, while 1.5KE43CA matches form factor and basic clamping but sacrifices precision VBR tolerance and automotive reliability assurance.
Availability
BZW04-44BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer power supply clamping requiring stable component supply, AEC-Q101 traceability, and DO-41 through-hole compatibility.
Supply support for BZW04-44BHE3/54 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The BZW04 series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, engineered for precise VBR control, low clamping ratio, and AEC-Q101 compliance from wafer to final test.
FAQ
What is the clamping voltage of BZW04-44BHE3/54 under a standard 10/1000 μs surge?
The BZW04-44BHE3/54 clamps to a maximum of 70.1 V when subjected to its rated peak pulse current of 5.7 A using the 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. The clamping performance remains stable across its full operating temperature range from –55 °C to +175 °C.
Is BZW04-44BHE3/54 suitable for automotive applications?
Yes, BZW04-44BHE3/54 is AEC-Q101 qualified and carries the HE3 suffix indicating compliance with automotive reliability standards, including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress testing (HAST). Its DO-41 package, glass-passivated junction, and –55 °C to +175 °C operating range make it appropriate for under-hood and cabin ECUs, sensor modules, and body control units.
How does the bidirectional configuration of BZW04-44BHE3/54 affect PCB layout?
The bidirectional nature of BZW04-44BHE3/54 eliminates polarity marking - there is no cathode band, and either lead may connect to any node in the protected circuit. This simplifies layout by removing orientation constraints, reduces assembly errors, and enables symmetric placement across differential lines or AC-coupled paths. The DO-41 axial package supports manual or automated through-hole insertion without rotation checks.
What is the maximum reverse leakage current for BZW04-44BHE3/54 at its stand-off voltage?
At its stand-off voltage VWM = 43.6 V and ambient temperature of 25 °C, the BZW04-44BHE3/54 exhibits a maximum reverse leakage current ID of 1.0 μA. This ultra-low leakage preserves signal integrity in high-impedance sensor bias networks and minimizes quiescent power loss in battery-operated systems - critical for always-on automotive modules.
Does BZW04-44BHE3/54 require heatsinking in typical applications?
No additional heatsinking is required for BZW04-44BHE3/54 under single-pulse or low-duty-cycle transient conditions, as its 400 W peak pulse rating is defined for non-repetitive events with ≤ 0.01 % duty cycle. However, for repetitive surges exceeding 1 pulse/minute, thermal derating per Figure 2 of the datasheet must be applied, and PCB copper area should be optimized per Vishay's DO-41 thermal guidelines to maintain TJ ≤ 175 °C.
BZW04-44BHE3/54 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:
- -
- 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)
BZW04-44BHE3/54 FAQ
1.How can I place an order for BZW04-44BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-44BHE3/54 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 BZW04-44BHE3/54 reliable?
The price and inventory of BZW04-44BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-44BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-44BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-44BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-44BHE3/54?
BZW04-44BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-44BHE3/54 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 BZW04-44BHE3/54?
For technical support, including BZW04-44BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-44BHE3/54 requirements.
6.How does Aetrix verify that BZW04-44BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-44BHE3/54 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 BZW04-44BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-44BHE3/54?
All BZW04-44BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-44BHE3/54, 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 BZW04-44BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04-44BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-44BHE3/54 Tags
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