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Vishay General Semiconductor - Diodes Division BZW04-26B-E3/73
- Part No.:
- BZW04-26B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-26B-E3/73.pdf
- Description:
- TVS DIODE 25.6VWM 41.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,391
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Product details
Overview
BZW04-26B-E3/73 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 a 25.6 V stand-off voltage (VWM), 28.5–31.5 V breakdown voltage (VBR) at 1 mA test current, and clamps to ≤41.5 V at 9.6 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 BZW04-26B-E3/73 datasheet, BZW04-26B-E3/73 pinout, BZW04-26B-E3/73 application, or BZW04-26B-E3/73 equivalent, this device is selected for robust ESD and lightning-induced transient suppression where bidirectional clamping, low leakage (<1 μA at VWM), and AEC-Q101 qualification are required in space-constrained through-hole designs.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR min/max (28.5–31.5 V), clamping voltage (VC = 41.5 V), and temperature coefficient of VBR (0.097 %/°C). Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns) to transients.
Rated for 400 W peak pulse power (10/1000 μs), it sustains repetitive surges at 0.01 % duty cycle and derates linearly above 25 °C ambient per Fig. 2. Junction temperature range spans −55 °C to +175 °C, supporting under-hood and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 28.5 V / 31.5 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering across process variation and temperature. |
| VC @ IPPM | 41.5 V at 9.6 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum stress level. |
| PPPM | 400 W - Peak transient energy absorption capability; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1 μA - Reverse leakage at stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max. | +175 °C - Maximum junction temperature; supports operation in high-ambient environments like engine control units. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads, UL 94 V-0 molded epoxy body, and no polarity marking (bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Leads are interchangeable; bidirectional clamping occurs regardless of voltage polarity applied across terminals. |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides mechanical mounting and contributes to thermal dissipation via lead conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable avalanche behavior over lifetime and temperature, critical for consistent clamping performance. |
| 400 W peak pulse power (10/1000 μs) | Supports high-energy transient suppression per IEC 61000-4-5 without degradation under repetitive surges (0.01 % duty cycle). |
| AEC-Q101 qualification | Validates suitability for automotive applications including powertrain, body electronics, and ADAS sensor interfaces. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for downstream ICs like CAN transceivers. |
| Solder dip rated (275 °C, 10 s) | Enables compatibility with standard wave soldering processes without parametric shift or bond integrity loss. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail and ground to limit voltage excursions to <41.5 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in PLC analog modules from field wiring surges. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS shunting transients before they reach precision op-amps or ADC inputs. Use Value: Maintains signal integrity and measurement accuracy while surviving repeated 400 W surges per IEC 61000-4-4. |
| Consumer Equipment AC/DC Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Input-stage protection for wall adapters exposed to mains-borne surges and ESD. IC Role / Device Role / Timing Role: First-line defense clamping common-mode transients between L/N and earth ground. Use Value: Enables compliance with UL 62368-1 and IEC 61000-4-5 Level 3 by limiting let-through energy to downstream rectifiers and controllers. |
Use Scenario: Protecting Ethernet PHY or DSL line drivers from lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Symmetrical clamping device placed differential-mode across pairs to suppress ±41.5 V transients. Use Value: Preserves signal fidelity up to 100 MHz due to low junction capacitance and fast sub-nanosecond response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA | Surface-mount SMB package (vs. through-hole DO-41); same 26 V VWM, but 400 W rating at 10/1000 μs and VC = 42.1 V. | Requires PCB rework for SMT assembly; better suited for high-density layouts where board space is constrained. | Select SMBJ26CA when migrating to automated SMT production or when thermal coupling to copper pour improves power handling. |
| P6KE27CA | Legacy 600 W P600 package; higher peak power but larger footprint, slower response (~1.5 ns), and no AEC-Q101 qualification. | Used in legacy industrial power supplies where size is less critical and automotive qualification is not required. | Choose P6KE27CA only for cost-sensitive, non-automotive applications where 600 W headroom justifies larger DO-204AC form factor. |
Compared with BZW04-26B-E3/73, SMBJ26CA offers SMT compatibility and identical electrical specs but lacks AEC-Q101 validation, while P6KE27CA trades automotive reliability and compactness for higher pulse power and legacy design support.
Availability
BZW04-26B-E3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom line card designs requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 assurance.
Supply support for BZW04-26B-E3/73 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 and application-specific performance.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered for high-reliability transient suppression in automotive, industrial, and consumer systems where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the BZW04-26B-E3/73 under a 10/1000 μs surge?
The BZW04-26B-E3/73 clamps to a maximum of 41.5 V when subjected to its rated 9.6 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed across temperature and process variation, ensuring predictable protection for downstream circuitry in the BZW04-26B-E3/73 application environment.
Is the BZW04-26B-E3/73 suitable for automotive use?
Yes, the BZW04-26B-E3/73 is AEC-Q101 qualified and explicitly rated for automotive applications. Its −55 °C to +175 °C operating junction temperature range, glass-passivated junction, and validated reliability testing make it appropriate for engine control, body electronics, and ADAS subsystems where the BZW04-26B-E3/73 is deployed.
Does the BZW04-26B-E3/73 have polarity markings?
No, the BZW04-26B-E3/73 is a bidirectional TVS and carries no polarity marking on its DO-41 package. Both leads are functionally identical, enabling symmetrical clamping regardless of voltage polarity-this distinguishes it from unidirectional variants like BZW04-26-E3/73, which feature a cathode band.
What is the maximum reverse leakage current for the BZW04-26B-E3/73 at its stand-off voltage?
At its 25.6 V stand-off voltage (VWM) and 25 °C ambient, the BZW04-26B-E3/73 exhibits a maximum reverse leakage current of 1.0 μA. This low ID ensures minimal power loss in always-on circuits and prevents false triggering in high-impedance sensor or communication line applications using the BZW04-26B-E3/73.
Can the BZW04-26B-E3/73 be used in place of a unidirectional TVS?
No-the BZW04-26B-E3/73 is strictly bidirectional and cannot replace a unidirectional TVS in DC-biased circuits requiring forward conduction blocking. Its symmetrical IV curve means it conducts equally in both directions above VBR; substituting it for a unidirectional part like BZW04-26-E3/73 would compromise DC functionality in the BZW04-26B-E3/73's intended application.
BZW04-26B-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.5V
- Current - Peak Pulse (10/1000µs):
- 9.6A
- 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)
BZW04-26B-E3/73 FAQ
1.How can I place an order for BZW04-26B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-26B-E3/73 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 BZW04-26B-E3/73 reliable?
The price and inventory of BZW04-26B-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-26B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04-26B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-26B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-26B-E3/73?
BZW04-26B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-26B-E3/73 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 BZW04-26B-E3/73?
For technical support, including BZW04-26B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-26B-E3/73 requirements.
6.How does Aetrix verify that BZW04-26B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04-26B-E3/73 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 BZW04-26B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04-26B-E3/73?
All BZW04-26B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-26B-E3/73, 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 BZW04-26B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04-26B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-26B-E3/73 Tags
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