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Vishay General Semiconductor - Diodes Division BZW04-70B-E3/54
- Part No.:
- BZW04-70B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-70B-E3/54.pdf
- Description:
- TVS DIODE 70.1VWM 113VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,075
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Product details
Overview
BZW04-70B-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 or power lines. It features a 70.1 V stand-off voltage (VWM), 77.9–86.1 V breakdown voltage (VBR) at 1 mA, 113 V maximum clamping voltage (VC) at 3.5 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 against ESD and inductive switching surges.
For engineers reviewing the BZW04-70B-E3/54 datasheet, BZW04-70B-E3/54 pinout, BZW04-70B-E3/54 application, or BZW04-70B-E3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, clamping performance under standardized surge conditions, and real-world protection use cases for automotive and industrial electronics.
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 sub-microsecond transients induced by relay switching or lightning-induced surges.
The device is rated for -55 °C to +175 °C operating junction temperature, supports 1.5 W steady-state power dissipation at TL = 75 °C, and exhibits a 0.105 %/°C temperature coefficient of VBR - ensuring stable clamping behavior across wide thermal environments in engine control units and motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70.1 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 48 V nominal systems. |
| VBR min/max | 77.9 V / 86.1 V at IT = 1 mA - guaranteed breakdown range ensures consistent turn-on threshold across production lots. |
| VC @ IPPM | 113 V at 3.5 A (10/1000 μs) - clamping voltage limits downstream IC stress during transient events per IEC 61000-4-5. |
| PPPM | 400 W - peak pulse power handling capacity with 0.01 % duty cycle; sufficient for repetitive load dump or EFT bursts. |
| ID @ VWM | 1.0 μA - ultra-low leakage preserves signal integrity in high-impedance sensor bias networks. |
| TJ max | +175 °C - extended junction temperature rating supports under-hood automotive placement without derating. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: molded epoxy body, matte tin-plated leads solderable per J-STD-002, UL 94 V-0 rated, 0.350 g unit weight, 550 pcs per 13″ paper tape reel (E3/54 packaging code). Bidirectional construction means no cathode band; terminals are non-polarized.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both ends function identically as bidirectional avalanche junction; no polarity dependency in PCB layout. |
| Lead 1 / Lead 2 | PCB termination interface | Matte tin-plated copper leads support wave/soldering at ≤275 °C for 10 s; compliant with JESD 22-B106. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables <1 ns response time and stable VBR over lifetime, critical for protecting high-speed CAN or RS-485 transceivers. |
| 400 W peak pulse power (10/1000 μs) | Handles repeated 48 V load-dump surges per ISO 7637-2 Pulse 5a without degradation. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor modules. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping, reducing risk of gate oxide damage in protected MOSFETs. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for long-life industrial control systems. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, absorbing transients before they reach ADC input or op-amp buffer. Use Value: Maintains signal fidelity under ISO 7637-2 Pulse 5a (75 V/100 ms) while surviving 175 °C ambient via AEC-Q101 thermal validation. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers subjected to relay coil flyback and EFT noise. IC Role / Device Role / Timing Role: Fast-acting shunt protector across input terminal and common rail, limiting voltage to ≤113 V during 3.5 A surge events. Use Value: Prevents false triggering and latch-up in optocoupler input stages while supporting >100,000 surge cycles per IEC 61000-4-4. |
| Telecom Line Interface | MOSFET Gate Protection |
Use Scenario: Shielding RS-485 transceiver data lines in outdoor base stations from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) bidirectional clamp placed differential-to-ground, preserving signal edge integrity up to 10 Mbps. Use Value: Clamps common-mode transients to <113 V without distorting differential signaling, meeting Telcordia GR-1089-CORE Level 3 requirements. |
Use Scenario: Guarding high-side N-channel MOSFET gates in DC-DC converters against Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Clamp connected between gate and source, limiting VGS excursion during dV/dt events to prevent unintended turn-on. Use Value: Suppresses gate ringing above 70.1 V with 1.0 μA leakage, avoiding shoot-through while maintaining PWM timing accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70CA | Same VWM (70 V), but SMC (DO-214AB) package; 600 W PPPM rating; higher VC (115 V); 100 pF typical capacitance. | Higher power handling suits 48 V bus protection; larger footprint requires PCB redesign; not AEC-Q101 qualified. | Select SMBJ70CA only when surge energy exceeds 400 W capability and DO-41 form factor is not required. |
| P6KE71CA | Same DO-41 package; 600 W PPPM; VWM = 60.7 V; VC = 115 V; no AEC-Q101 qualification; higher ID (5.0 μA). | Lower VWM reduces operating margin in 48 V systems; acceptable for commercial-grade industrial controls where automotive reliability is not mandated. | Choose P6KE71CA for cost-sensitive non-automotive designs where 60.7 V VWM provides adequate headroom and AEC-Q101 is unnecessary. |
Compared with SMBJ70CA and P6KE71CA, BZW04-70B-E3/54 uniquely combines AEC-Q101 qualification, DO-41 compatibility, and precise 70.1 V VWM - making it the optimal choice for space-constrained automotive sensor nodes requiring validated reliability and exact voltage margin alignment.
Availability
BZW04-70B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for BZW04-70B-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, rectifiers, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The BZW04 series was engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive powertrain, industrial automation, and infrastructure equipment where consistent clamping performance and thermal resilience are mandatory.
FAQ
What is the clamping voltage of BZW04-70B-E3/54 under standard 10/1000 μs surge conditions?
The BZW04-70B-E3/54 has a maximum clamping voltage (VC) of 113 V at 3.5 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and guarantees that downstream circuitry remains below destructive voltage thresholds during standardized transient events. The BZW04-70B-E3/54 maintains this clamping performance across its full operating temperature range.
Is BZW04-70B-E3/54 suitable for automotive applications?
Yes, BZW04-70B-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its -55 °C to +175 °C operating junction temperature range, glass-passivated junction, and validation against temperature cycling, HTRB, and ESD ensure compliance with automotive reliability standards. The BZW04-70B-E3/54 is commonly deployed in engine control modules and ADAS sensor interfaces.
Does BZW04-70B-E3/54 have polarity markings on the package?
No, BZW04-70B-E3/54 is a bidirectional TVS diode and carries no polarity marking on its DO-41 package. Unlike unidirectional types (which feature a cathode band), the BZW04-70B-E3/54 functions identically in both directions - simplifying PCB layout and eliminating orientation-dependent assembly errors. This symmetry is confirmed in the Vishay datasheet Document Number 88316.
What is the leakage current specification for BZW04-70B-E3/54 at its stand-off voltage?
The BZW04-70B-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 70.1 V stand-off voltage (VWM) and TA = 25 °C. This ultra-low leakage preserves signal integrity in high-impedance circuits such as sensor bias networks or precision reference paths. The BZW04-70B-E3/54 maintains this specification across its full operating temperature range per Vishay's published derating curves.
Can BZW04-70B-E3/54 be used in place of unidirectional TVS diodes?
No - BZW04-70B-E3/54 is strictly bidirectional and must not replace unidirectional TVS diodes in DC-biased circuits where forward conduction must be blocked. Its symmetrical structure conducts in both directions once VBR is exceeded, making it unsuitable for applications like DC power rail protection where polarity-specific clamping is required. Always verify circuit topology before substituting the BZW04-70B-E3/54.
BZW04-70B-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:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-70B-E3/54 FAQ
1.How can I place an order for BZW04-70B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-70B-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 BZW04-70B-E3/54 reliable?
The price and inventory of BZW04-70B-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 BZW04-70B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-70B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-70B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-70B-E3/54?
BZW04-70B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-70B-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 BZW04-70B-E3/54?
For technical support, including BZW04-70B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-70B-E3/54 requirements.
6.How does Aetrix verify that BZW04-70B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-70B-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 BZW04-70B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-70B-E3/54?
All BZW04-70B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-70B-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 BZW04-70B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-70B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-70B-E3/54 Tags
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