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Nexperia USA Inc. BAS70-QVL
- Part No.:
- BAS70-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70-QVL.pdf
- Description:
- BAS70-Q/SOT23/TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,414
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Product details
Overview
BAS70-QVL from Nexperia is a general-purpose Schottky diode in SOT23 package, rated for 70 V reverse voltage, 70 mA forward current, and 410 mV forward voltage at 1 mA pulsed. It features low capacitance (2 pF), low leakage (100 nA at 50 V), and AEC-Q101 qualification for automotive signal clamping and ultra-high-speed switching.
For engineers reviewing the BAS70-QVL datasheet, BAS70-QVL pinout, BAS70-QVL application, or BAS70-QVL equivalent, key selection criteria include reverse breakdown margin, junction temperature derating above 85 °C, pulsed forward voltage behavior at 1–15 mA, and SOT23 thermal resistance (500 K/W on FR4).
Technical Context
The BAS70-QVL implements a planar Schottky barrier structure optimized for fast recovery (no minority carrier storage) and low forward conduction loss. Its 70 V VR rating enables use in 48 V automotive subsystems with transient margin, while its 2 pF capacitance supports >100 MHz signal path clamping without resonance degradation.
Thermal performance is defined by junction-to-ambient resistance of 500 K/W on standard FR4 PCB - limiting continuous power dissipation to ~250 mW at Tamb = 25 °C. The n.c. (pin 2) terminal isolates internal die bonding, eliminating parasitic coupling in high-isolation routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 70 V - supports 48 V automotive bus clamping with 46 % headroom against ISO 7637-2 pulse 5a (75 V peak) |
| VF (Forward Voltage) | 410 mV @ 1 mA pulsed - enables low-loss biasing in precision reference clamp networks |
| IR (Reverse Current) | 100 nA @ 50 V - ensures minimal leakage in high-impedance sample-and-hold or level-shift circuits |
| Cd (Capacitance) | 2 pF @ 0 V, 1 MHz - preserves signal integrity in RF detector or high-speed logic input protection |
| Tj (Max Junction Temp) | 150 °C - allows operation in under-hood ECUs with ambient up to 125 °C and 25 °C thermal rise margin |
| Rth(j-a) | 500 K/W - defines maximum continuous power (250 mW) on single-sided FR4; requires layout-aware copper pour for higher loads |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, tin-plated terminations compatible with lead-free reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward current entry point; connects to positive rail or signal source in clamping configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no PCB trace or thermal pad connection permitted |
| 3 | Cathode (K) | Forward current exit; ties to ground or lower-potential node in clamp or rectifier topology |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | No minority carrier storage → sub-nanosecond reverse recovery; suitable for >100 MHz signal line protection |
| Low leakage current | 100 nA @ 50 V enables stable DC bias in high-Z sensor interfaces without drift |
| AEC-Q101 qualified | Validated for automotive Grade 1 (−40 °C to +125 °C ambient) per stress test requirements |
| Low capacitance | 2 pF minimizes loading on high-frequency clock or data lines during overvoltage suppression |
Applications
| Automotive CAN Transceiver Protection | USB 2.0 Data Line Clamping |
|---|---|
Use Scenario: Protecting CANH/CANL pins from ESD and load-dump transients in body control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between transceiver I/O and connector, conducting only during overvoltage events. Use Value: 70 V VR withstands ISO 16750-2 load dump spikes; 2 pF capacitance avoids USB 2.0 eye diagram distortion. | Use Scenario: ESD and surge protection on D+ and D− lines of embedded USB host ports. IC Role / Device Role / Timing Role: Low-capacitance shunt diode tied to VBUS and GND, clamping ±15 kV HBM transients. Use Value: 410 mV VF ensures minimal DC offset on differential pair; AEC-Q101 grade supports industrial USB hubs. |
| Industrial Sensor Signal Conditioning | DC-DC Converter Feedback Path Clamp |
Use Scenario: Biasing and overvoltage protection for analog outputs of pressure/temperature sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Precision clamp referenced to stable 2.5 V rail, limiting output swing to prevent ADC saturation. Use Value: 100 nA IR prevents loading of 10 MΩ sensor output impedance; SOT23 footprint fits dense analog layouts. | Use Scenario: Preventing feedback node excursion beyond optocoupler CTR range during startup or fault in isolated flyback converters. IC Role / Device Role / Timing Role: Fast-acting clamp across TL431 reference input to limit error amplifier output swing. Use Value: Sub-ns recovery avoids regulation delay; 70 mA IF rating handles transient currents without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBAT54LT1G | 40 V VR, 200 mA IF, 300 mV VF @ 10 mA; SOT23 package | Lower voltage rating limits use in 48 V systems; higher IF supports higher-energy clamping | Select when prioritizing lower VF over transient margin in 24 V or lower rails |
| BAT54C,215 | 30 V VR, 200 mA IF, 350 mV VF @ 10 mA; dual common-cathode SOT23-3 | Dual configuration enables bidirectional clamping in single package; insufficient for 48 V load dump | Choose for space-constrained dual-line protection where VR ≤ 30 V suffices |
Compared with SBAT54LT1G and BAT54C,215, the BAS70-QVL provides superior 70 V transient margin for automotive 48 V architectures but trades off higher VF and lower IF - making it optimal for precision low-leakage clamping rather than high-current surge handling.
Availability
BAS70-QVL is available at Aetrix Electronics and suitable for automotive CAN protection, USB 2.0 interface clamping, industrial sensor conditioning, and isolated DC-DC feedback path safeguarding requiring stable component supply across production lifecycles.
Supply support for BAS70-QVL 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BAS70-QVL belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for robust voltage clamping and ultra-fast switching in harsh automotive and industrial environments.
FAQ
Is the BAS70-QVL pin 2 truly unconnected, and can it be grounded?
No - pin 2 is internally not connected and must remain electrically floating. Grounding or routing to any potential creates unintended parasitic paths, degrades isolation, and violates the device's qualified thermal and electrical model. The SOT23 footprint must omit solder mask and copper for pin 2.
How does the 500 K/W Rth(j-a) translate to real-world power handling?
At Tamb = 85 °C, the maximum allowable continuous power is (150 °C − 85 °C) / 500 K/W = 130 mW. This corresponds to ~310 mA at 410 mV VF - but derating to 70 mA (per datasheet IF limit) ensures reliability under pulsed and transient conditions without thermal runaway.
Can BAS70-QVL replace BAS70-04 in a dual-diode layout?
No - BAS70-04 is a dual-series Schottky in SOT363 with different pinout (1=A1, 2=K1, 3=n.c., 4=K2, 5=A2, 6=n.c.). BAS70-QVL is single-diode SOT23 with pin 2 n.c.; direct replacement would require PCB redesign and violates functional equivalence due to missing second diode path.
What is the significance of the 'Q' suffix in BAS70-QVL?
The 'Q' denotes AEC-Q101 qualification per Nexperia's naming convention; 'VL' indicates tape-and-reel packaging with 3000 units per reel and moisture sensitivity level 1 (MSL1), enabling standard SMT assembly without dry-pack requirements.
BAS70-QVL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io):
- 70mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 70 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 150°C
BAS70-QVL FAQ
1.How can I place an order for BAS70-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-QVL 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 BAS70-QVL reliable?
The price and inventory of BAS70-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-QVL is usually 5 days.
3.What payment methods are accepted for BAS70-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-QVL?
BAS70-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-QVL 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 BAS70-QVL?
For technical support, including BAS70-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-QVL requirements.
6.How does Aetrix verify that BAS70-QVL is sourced from the original manufacturer or authorized distributors?
All BAS70-QVL 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 BAS70-QVL meets industry standards.
7.What is the process for return or replacement of BAS70-QVL?
All BAS70-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-QVL, 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 BAS70-QVL part is unused and in its original packaging.
Return procedure for BAS70-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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