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Vishay General Semiconductor - Diodes Division BZW04-23B-E3/73
- Part No.:
- BZW04-23B-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-23B-E3/73.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,812
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Product details
Overview
BZW04-23B-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 23.1 V standoff voltage (VWM), 25.7–28.4 V breakdown voltage (VBR) at 1 mA test current, 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - suitable for protecting automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the BZW04-23B-E3/73 datasheet, BZW04-23B-E3/73 pinout, BZW04-23B-E3/73 application, or BZW04-23B-E3/73 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, AEC-Q101 qualification status, clamping performance under surge conditions, and direct alternatives for ESD and load-switching transient protection.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with no polarity marking on the DO-41 package. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing inductive switching spikes and lightning-induced surges on unshielded lines.
Rated for -55 °C to +175 °C operating junction temperature and qualified to AEC-Q101, the BZW04-23B-E3/73 supports automotive-grade reliability without derating up to 125 °C ambient. It delivers 1.5 W steady-state power dissipation on infinite heatsink at 75 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 23.1 V - maximum continuous reverse working voltage before clamping begins |
| VBR min/max | 25.7 V / 28.4 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 37.5 V at 10.7 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak pulse power handling capability per single transient event |
| ID @ VWM | 1.0 μA - ultra-low leakage ensures minimal standby power impact on high-impedance nodes |
| TJ max | +175 °C - extended thermal range supports under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive electronic systems requiring robust transient immunity |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package with matte tin-plated leads; no polarity marking for bidirectional operation - terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both ends function identically; connects across protected line and ground or between differential lines |
| Lead 1 / Lead 2 | Mounting interface | Axial leads support through-hole PCB mounting; 0.028–0.034 inch diameter, solderable per J-STD-002 |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR over lifetime and resistance to humidity/moisture-induced degradation |
| 400 W 10/1000 μs pulse rating | Handles repetitive inductive kickback events (e.g., relay coil de-energization) at 0.01% duty cycle |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing meets flammability requirements for enclosed industrial enclosures |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
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 voltage clamp placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤37.5 V during 10.7 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input modules against inductive switching noise from solenoids, contactors, and motor starters. IC Role / Device Role / Timing Role: Line-to-ground TVS on 24 V DC input channels of programmable logic controllers. Use Value: Clamps 400 W transients within 1 ns, maintaining signal integrity while meeting IEC 61000-4-4 Level 4 immunity requirements. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from ESD and lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Differential-mode TVS across A/B lines or common-mode clamp from line pair to ground. Use Value: Symmetric bidirectional clamping ensures equal protection regardless of surge polarity, critical for full-duplex communication links. |
Use Scenario: Securing microcontroller GPIOs and display driver lines in washing machines, HVAC controls, and smart appliances. IC Role / Device Role / Timing Role: Point-of-use TVS on front-panel buttons, encoder outputs, and relay drive lines. Use Value: 1.0 μA leakage preserves battery life in standby mode; DO-41 form factor allows manual rework and cost-effective through-hole assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | DO-214AA package; 24 V VWM; 38.9 V VC @ 10.3 A; same 400 W PPPM rating | Surface-mount footprint requires PCB redesign; higher thermal resistance than DO-41 in free-air | Select when automated SMT assembly is required and board space is constrained |
| P6KE27CA | DO-15 package; 27 V VWM; 43.0 V VC @ 9.3 A; 600 W PPPM (10/1000 μs) | Higher clamping voltage increases risk to 3.3 V logic; larger DO-15 body limits density | Choose only if higher pulse energy margin is needed and layout accommodates larger body |
Compared with BZW04-23B-E3/73, SMBJ24CA offers SMT compatibility but sacrifices axial-lead serviceability and thermal performance in non-heatsinked layouts, while P6KE27CA trades lower clamping precision for greater pulse energy capacity - making BZW04-23B-E3/73 optimal for cost-sensitive, AEC-Q101-compliant through-hole designs requiring tight voltage control.
Availability
BZW04-23B-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply and long-term manufacturing continuity.
Supply support for BZW04-23B-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific optimization.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered for robust transient suppression in harsh environments - particularly targeting automotive, industrial, and telecommunications infrastructure where repeatable clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of BZW04-23B-E3/73 under a standard 10/1000 μs surge?
The BZW04-23B-E3/73 exhibits a maximum clamping voltage (VC) of 37.5 V when subjected to its rated peak pulse current of 10.7 A using the 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream circuitry remains exposed to no more than 37.5 V during transient events - a critical parameter for safeguarding 24 V nominal systems and 3.3 V/5 V logic interfaces. The BZW04-23B-E3/73 maintains this performance across its full operating temperature range.
Is BZW04-23B-E3/73 suitable for automotive applications?
Yes, BZW04-23B-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction - including glass-passivated junction, DO-41 package with matte tin leads, and operation from -55 °C to +175 °C - meets stringent automotive reliability requirements. The BZW04-23B-E3/73 is deployed in engine control units, body control modules, and sensor interfaces where immunity to load dump, jump-start, and ISO 7637-2 pulses is essential.
How does the bidirectional configuration of BZW04-23B-E3/73 affect its PCB layout?
The BZW04-23B-E3/73 has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation constraints. Engineers can place it across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs or line-to-ground paths - without verifying anode/cathode alignment. This symmetry also avoids design errors during manual assembly or rework, and the DO-41 axial package supports easy in-circuit verification with standard multimeter diode-test mode.
What is the maximum steady-state power dissipation of BZW04-23B-E3/73?
The BZW04-23B-E3/73 has a maximum steady-state power dissipation (PD) of 1.5 W when mounted on an infinite heatsink at a lead temperature (TL) of 75 °C. In typical free-air conditions, derating applies per Figure 5 in the datasheet - e.g., ~0.8 W at TL = 100 °C. This rating governs continuous power handling during sustained overvoltage conditions, distinct from its 400 W peak pulse capability. The BZW04-23B-E3/73 must be applied within these thermal limits to ensure long-term reliability.
Does BZW04-23B-E3/73 have RoHS and REACH compliance documentation?
Yes, the "E3" suffix in BZW04-23B-E3/73 indicates full RoHS compliance per EU Directive 2011/65/EU and adherence to Vishay's material declaration standard (document #99912). The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits. REACH SVHC screening is included in Vishay's compliance reports, and the BZW04-23B-E3/73 carries the appropriate declarations for export to EU, China, and Korea markets.
BZW04-23B-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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- 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)
BZW04-23B-E3/73 FAQ
1.How can I place an order for BZW04-23B-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-23B-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 BZW04-23B-E3/73 reliable?
The price and inventory of BZW04-23B-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 BZW04-23B-E3/73 is usually 5 days.
3.What payment methods are accepted for BZW04-23B-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-23B-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-23B-E3/73?
BZW04-23B-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-23B-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 BZW04-23B-E3/73?
For technical support, including BZW04-23B-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-23B-E3/73 requirements.
6.How does Aetrix verify that BZW04-23B-E3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04-23B-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 BZW04-23B-E3/73 meets industry standards.
7.What is the process for return or replacement of BZW04-23B-E3/73?
All BZW04-23B-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-23B-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 BZW04-23B-E3/73 part is unused and in its original packaging.
Return procedure for BZW04-23B-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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