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Nexperia USA Inc. BAS70-04-QVL
- Part No.:
- BAS70-04-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70-04-QVL.pdf
- Description:
- DIODE ARR SCHOT 70V 70MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,842
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Product details
Overview
BAS70-04-Q from Nexperia is a general-purpose dual Schottky diode in SOT23 package, configured as two independent Schottky diodes sharing a common cathode (A1–K1 and A2–K2), with 70 V reverse voltage rating, 70 mA forward current capability, and 410 mV typical forward voltage at 1 mA - used for ultra-high-speed switching and voltage clamping in automotive power rail protection circuits.
For engineers reviewing the BAS70-04-Q datasheet, BAS70-04-Q pinout, BAS70-04-Q application, or BAS70-04-Q equivalent, key selection criteria include its AEC-Q101 qualification, low 2 pF capacitance at 0 V, 100 nA reverse leakage at 50 V, thermal resistance of 500 K/W, and dual-diode topology enabling compact bidirectional clamping in space-constrained automotive ECUs.
Technical Context
This dual Schottky diode integrates two independent anode-cathode junctions in a single SOT23-3 package: Pin 1 = A1 (anode of diode 1), Pin 2 = K2 (cathode of diode 2), Pin 3 = K1/A2 (common terminal serving as cathode for D1 and anode for D2). Its architecture supports independent forward conduction paths with shared terminal optimization.
Designed for automotive-grade reliability, it operates across −65 °C to +150 °C ambient, delivers 10 µA max reverse current at 70 V, exhibits 750 mV VF at 10 mA, and maintains 1 V VF at 15 mA - enabling precise low-voltage clamping without thermal runaway in transient-suppression circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 70 V - defines maximum allowable DC or peak reverse bias before breakdown; suitable for 48 V automotive systems with margin. |
| Forward Voltage (VF) | 410 mV @ 1 mA - enables low-loss signal-level clamping and logic-level translation without significant voltage drop. |
| Reverse Current (IR) | 100 nA @ 50 V - ensures minimal leakage in high-impedance sensing or standby power domains. |
| Diode Capacitance (Cd) | 2 pF @ 0 V, 1 MHz - supports >100 MHz signal integrity in RF detector or high-speed data line protection. |
| Thermal Resistance (Rth(j-a)) | 500 K/W - indicates junction-to-ambient dissipation capability on standard FR4 PCB; limits continuous power to ~250 mW. |
| Junction Temperature (Tj) | 150 °C - specifies absolute maximum operating temperature; enables use in under-hood ECU environments. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, tin-plated leads, optimized for reflow and wave soldering per IPC-7095.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 (A1) | Input node for first Schottky path; connects to protected signal or supply rail requiring clamping to common reference. |
| 2 | Cathode of Diode 2 (K2) | Output node for second Schottky path; routes clamped current to ground or lower-potential rail. |
| 3 | Common Terminal (K1/A2) | Shared node acting as cathode for D1 and anode for D2 - enables bidirectional clamping between Pins 1 and 2 via this center terminal. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics per stress test requirements. |
| Low forward voltage | 410 mV typ. at 1 mA enables efficient clamping in low-voltage microcontroller I/O protection without signal distortion. |
| Ultra-low capacitance | 2 pF at 0 V preserves signal edge integrity in USB 2.0, CAN FD, or LIN bus line protection. |
| High-speed switching | Sub-nanosecond recovery time inherent to Schottky structure minimizes switching loss in PWM-driven clamp circuits. |
| Low leakage current | 100 nA max at 50 V prevents battery drain in always-on automotive modules during sleep mode. |
Applications
| Automotive Power Rail Protection | High-Speed Logic-Level Clamping |
|---|---|
Use Scenario: Suppressing load-dump transients and ISO 7637-2 pulses on 12 V/48 V vehicle power networks. IC Role / Device Role / Timing Role: Dual Schottky clamping diode providing bidirectional overvoltage protection between supply and ground rails. Use Value: 70 V VR rating with 100 mA non-repetitive surge capability (IFSM) absorbs 10 ms transients without failure. |
Use Scenario: Protecting MCU GPIO pins from ESD and overshoot in infotainment display interfaces. IC Role / Device Role / Timing Role: Low-capacitance voltage clamp limiting signal swing to safe logic thresholds. Use Value: 2 pF Cd ensures <1 ns rise-time degradation on 100 Mbps digital lines while maintaining 410 mV clamping threshold. |
| RF Detector Biasing | Redundant Signal Path Switching |
Use Scenario: Providing bias and DC restoration in AM/FM radio front-end detector stages. IC Role / Device Role / Timing Role: Dual Schottky rectifier converting RF envelope to baseband while minimizing forward loss. Use Value: 410 mV VF at 1 mA yields >20 dBm sensitivity improvement over silicon diodes in weak-signal detection. |
Use Scenario: Enabling fail-safe signal routing in dual-redundant sensor inputs for brake-by-wire systems. IC Role / Device Role / Timing Role: Independent anode-cathode paths allowing isolation and OR-ing of two analog sensor outputs. Use Value: Matched VF characteristics (<50 mV mismatch) ensure balanced current sharing and seamless switchover. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR20F70HT1G | Higher VF (550 mV @ 1 mA), same 70 V VR, but rated only to 125 °C Tj (vs. 150 °C). | Lacks AEC-Q101 certification; not approved for under-hood automotive deployment. | Select when cost is primary and ambient temperature stays below 85 °C. |
| Vishay SDUR7004 | Same SOT23-3 pinout and 70 V VR, but higher IR (500 nA @ 50 V) and larger Cd (3.5 pF). | Lower leakage sensitivity makes it less suitable for battery-backed sensor nodes. | Prefer where higher surge current (150 mA IFSM) outweighs leakage and capacitance penalties. |
Compared with NSR20F70HT1G and SDUR7004, the BAS70-04-Q uniquely combines AEC-Q101 qualification, 150 °C operation, 2 pF capacitance, and 100 nA leakage - making it the only choice for thermally demanding, safety-critical automotive clamping where signal fidelity and long-term reliability are mandatory.
Availability
BAS70-04-Q is available at Aetrix Electronics and suitable for automotive power rail protection, high-speed logic-level clamping, and RF detector biasing requiring stable component supply across production lifecycles.
Supply support for BAS70-04-Q 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 BAS70-04-Q belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for robust voltage clamping and fast switching in harsh automotive environments.
FAQ
Is BAS70-04-Q suitable for bidirectional ESD protection on differential data lines?
No - its internal configuration (A1–K1/A2–K2) forms two unidirectional Schottky paths sharing a common terminal, not a true bidirectional TVS structure. It provides effective unidirectional clamping from signal to ground or rail, but lacks symmetric breakdown for ±ESD pulse handling. For IEC 61000-4-2 compliance, dedicated bidirectional TVS arrays like PESD5V0S1BA should be used instead.
What is the maximum continuous forward current for each diode in BAS70-04-Q?
The datasheet specifies 70 mA as the absolute maximum continuous forward current (IF) per diode, based on thermal limits at Tamb = 25 °C with free-air conditions. Derating is required above 25 °C ambient; at 85 °C, maximum IF drops to approximately 45 mA due to the 500 K/W Rth(j-a) and 150 °C Tj limit.
Can BAS70-04-Q replace BAS70-05-Q in a design?
No - BAS70-04-Q has a common-cathode/anode configuration (Pin 3 = K1/A2), whereas BAS70-05-Q uses a common-anode topology (Pin 3 = A1/A2). Their pinouts are incompatible: swapping them would reverse one diode's polarity, causing functional failure. Board layout and schematic must match the exact topology.
Does BAS70-04-Q require special PCB layout considerations for thermal performance?
Yes - its 500 K/W Rth(j-a) assumes mounting on FR4 with single-sided 1 oz copper and standard SOT23 footprint. To improve thermal dissipation, add thermal vias under the center pad (Pin 3) and connect to inner-layer ground planes. Avoid large copper pours on top-side only, as they increase thermal resistance without conduction paths to internal layers.
BAS70-04-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
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io) (per Diode):
- 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:
- 100 nA @ 50 V
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAS70-04-QVL FAQ
1.How can I place an order for BAS70-04-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-04-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 BAS70-04-QVL reliable?
The price and inventory of BAS70-04-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-04-QVL is usually 5 days.
3.What payment methods are accepted for BAS70-04-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-04-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-04-QVL?
BAS70-04-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-04-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 BAS70-04-QVL?
For technical support, including BAS70-04-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-04-QVL requirements.
6.How does Aetrix verify that BAS70-04-QVL is sourced from the original manufacturer or authorized distributors?
All BAS70-04-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 BAS70-04-QVL meets industry standards.
7.What is the process for return or replacement of BAS70-04-QVL?
All BAS70-04-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-04-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 BAS70-04-QVL part is unused and in its original packaging.
Return procedure for BAS70-04-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS70-04-QVL Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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