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Vishay General Semiconductor - Diodes Division BZW04P70BHE3/73
- Part No.:
- BZW04P70BHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P70BHE3/73.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,577
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Product details
Overview
BZW04P70BHE3/73 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 70.1 V stand-off voltage (VWM), 113 V maximum clamping voltage (VC) at 3.5 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the BZW04P70BHE3/73 datasheet, BZW04P70BHE3/73 pinout, BZW04P70BHE3/73 application, or BZW04P70BHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) axial package, bi-directional symmetry, low leakage (<1 μA at VWM), and temperature coefficient of breakdown voltage (0.105 %/°C).
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the 10/1000 μs surge rating reflects standardized lightning and inductive-switching transient immunity per ANSI/IEEE C62.35.
The device is rated for continuous operation from –55 °C to +175 °C junction temperature, with thermal derating above 25 °C ambient. Its 1.5 W steady-state power dissipation (PD) and 0.67 A non-repetitive peak surge current (IFSM not applicable - bi-directional only) define safe DC bias and repetitive transient handling limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70.1 V - maximum continuous working voltage before clamping begins; sets operating margin for protected circuitry. |
| VC @ IPPM | 113 V at 3.5 A - clamped voltage during 10/1000 μs surge; determines worst-case stress on downstream ICs. |
| PPPM | 400 W - peak transient energy absorption capacity; defines immunity level against standard lightning surges. |
| ID @ VWM | <1 μA - ultra-low reverse leakage at stand-off voltage; minimizes standby power loss and signal distortion. |
| TJ max. | +175 °C - maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Temp. Coeff. | 0.105 %/°C - predictable VBR drift with temperature; supports stable clamping across wide thermal ranges. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TC, and HTRB testing per stress test conditions. |
Pinout & Package
Package: DO-204AL (DO-41), 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. HE3 suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional terminal pair | No polarity marking; terminals are functionally identical - connects across protected line and return (e.g., RS-485 A/B, CAN H/L, or power rail-to-rail). |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures consistent breakdown voltage distribution and long-term stability under thermal cycling and humidity stress. |
| 400 W 10/1000 μs pulse rating | Meets IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-earth) surge immunity requirements. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Bi-directional symmetry | Eliminates orientation concerns during placement; simplifies PCB layout and reduces assembly errors in differential bus protection. |
| RoHS-compliant & UL 94 V-0 | Supports environmentally regulated production and meets safety standards for flame-retardant enclosure integration. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine bay environments subject to load dump and ISO 7637-2 transients. IC Role / Device Role / Timing Role: Voltage clamping element placed between sensor signal line and ground, shunting surge energy before it reaches ADC input or signal conditioner. Use Value: Maintains signal integrity during 100 V/50 ms load dump events by limiting voltage to ≤113 V, preventing latch-up or permanent damage to 3.3 V/5 V signal chain components. | Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLC backplanes exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Bi-directional TVS connected across differential pair (A–B) and to ground, absorbing common-mode and differential-mode transients. Use Value: Enables reliable communication up to 10 Mbps by suppressing >400 W surges without degrading signal edge rate or introducing jitter via low capacitance (<100 pF typical). |
| Telecom Line Interface | Power Supply Rail Clamp |
Use Scenario: Protecting Ethernet PHY front-end circuits in PoE-powered network switches against lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Primary surge clamp on RJ45 side of isolation transformer, coordinated with secondary-side TVS for full differential and common-mode suppression. Use Value: Withstands repeated 10/1000 μs surges up to 400 W while maintaining <1 μA leakage at 70.1 V, preserving low-noise biasing of magnetics and PHY receivers. | Use Scenario: Clamping 12 V DC input rails in embedded controllers subjected to reverse battery connection and jump-start transients. IC Role / Device Role / Timing Role: Bi-directional rail-to-rail clamp across supply and return, triggered only during overvoltage events exceeding ±70.1 V. Use Value: Limits transient overshoot to ≤±113 V, protecting downstream LDOs and microcontrollers without affecting normal 12 V regulation or quiescent current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA | Same VWM (70 V), but SMB package (surface-mount); lower PPPM (600 W), higher VC (115 V), no AEC-Q101 listing. | Preferred for space-constrained PCBs; unsuitable for automotive under-hood due to qualification gap and thermal derating limitations. | Select when board area is critical and automotive qualification is not required. |
| P6KE71CA | Same DO-41 package and bi-directionality; lower PPPM (600 W), higher VC (121 V), commercial grade only (no AEC-Q101), wider VBR tolerance (±10%). | Used in cost-sensitive industrial controls; lacks automotive reliability validation and tighter parametric control. | Choose for non-automotive legacy designs where qualification and tight VBR are secondary to cost. |
Compared with SMBJ70CA and P6KE71CA, BZW04P70BHE3/73 provides AEC-Q101 assurance, tighter VBR tolerance (±6.5%), lower clamping voltage (113 V vs. ≥115 V), and optimized thermal performance in axial through-hole mounting - making it the preferred choice for mission-critical automotive and industrial deployments requiring proven field reliability.
Availability
BZW04P70BHE3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and telecom line protection requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for BZW04P70BHE3/73 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, efficiency, and application-specific optimization.
The BZW04P series belongs to Vishay's TransZorb® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of BZW04P70BHE3/73 under a 10/1000 μs surge?
The BZW04P70BHE3/73 clamps to a maximum of 113 V when subjected to its rated 3.5 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is BZW04P70BHE3/73 suitable for automotive applications?
Yes, BZW04P70BHE3/73 is AEC-Q101 qualified and specifically designed for automotive use. Its construction, testing, and parameter guarantees - including operation from –55 °C to +175 °C and validation against HTOL, temperature cycling, and humidity testing - meet automotive electronic module requirements, especially in engine control, body electronics, and ADAS sensor subsystems.
Does BZW04P70BHE3/73 have polarity markings?
No, BZW04P70BHE3/73 is a bi-directional TVS diode and carries no polarity marking. Its terminals are functionally identical, allowing installation in either orientation across protected lines - a key advantage for differential bus protection (e.g., CAN, RS-485) where orientation errors must be avoided during manual or automated assembly.
What is the maximum reverse leakage current of BZW04P70BHE3/73 at its stand-off voltage?
At its 70.1 V stand-off voltage (VWM) and TA = 25 °C, BZW04P70BHE3/73 exhibits a maximum reverse leakage current (ID) of 1 μA. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes power loss in always-on systems such as automotive wake-up circuits.
How does the temperature coefficient affect BZW04P70BHE3/73's breakdown voltage?
The BZW04P70BHE3/73 has a maximum temperature coefficient of breakdown voltage (VBR) of 0.105 %/°C. This means VBR increases predictably with junction temperature - for example, a +50 °C rise above 25 °C increases VBR by approximately 5.25 %, ensuring stable clamping margins across its full –55 °C to +175 °C operating range.
BZW04P70BHE3/73 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- 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)
BZW04P70BHE3/73 FAQ
1.How can I place an order for BZW04P70BHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P70BHE3/73 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 BZW04P70BHE3/73 reliable?
The price and inventory of BZW04P70BHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P70BHE3/73 is usually 5 days.
3.What payment methods are accepted for BZW04P70BHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P70BHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P70BHE3/73?
BZW04P70BHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P70BHE3/73 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 BZW04P70BHE3/73?
For technical support, including BZW04P70BHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P70BHE3/73 requirements.
6.How does Aetrix verify that BZW04P70BHE3/73 is sourced from the original manufacturer or authorized distributors?
All BZW04P70BHE3/73 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 BZW04P70BHE3/73 meets industry standards.
7.What is the process for return or replacement of BZW04P70BHE3/73?
All BZW04P70BHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P70BHE3/73, 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 BZW04P70BHE3/73 part is unused and in its original packaging.
Return procedure for BZW04P70BHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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