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Nexperia USA Inc. BAS40-04-QVL
- Part No.:
- BAS40-04-QVL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS40-04-QVL.pdf
- Description:
- DIODE ARR SCHOTTKY 40V TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,758
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Product details
Overview
BAS40-04-Q from Nexperia is a general-purpose dual Schottky diode in SOT23 package, configured as two independent Schottky junctions sharing a common terminal (pin 3 = K1/A2). It delivers 40 V reverse voltage rating, 120 mA forward current capability, 380 mV typical forward voltage at 1 mA, 5 pF capacitance at 0 V, and is AEC-Q101 qualified for automotive signal clamping and ultra-high-speed switching.
For engineers reviewing the BAS40-04-Q datasheet, BAS40-04-Q pinout, BAS40-04-Q application, or BAS40-04-Q equivalent, this dual Schottky diode is selected for low-loss, high-speed discrete functions where low VF, low IR, and compact dual-diode topology are critical - especially in space-constrained automotive signal conditioning and protection circuits.
Technical Context
The BAS40-04-Q integrates two monolithic Schottky diodes in a single SOT23-3 package with shared terminal architecture: pin 1 = anode of D1, pin 2 = cathode of D2, pin 3 = cathode of D1 and anode of D2. This configuration enables series-connected or common-cathode/anode arrangements without external wiring.
Its 150 °C maximum junction temperature, 500 K/W junction-to-ambient thermal resistance on FR4, and 1 µA reverse leakage at 30 V support reliable operation in thermally demanding automotive ambient environments while maintaining fast recovery (no minority carrier storage) and low noise due to metal-semiconductor junction behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Enables clamping of transients up to automotive load-dump levels without breakdown. |
| Forward Voltage (VF) | 380 mV @ 1 mA - Minimizes conduction loss in low-current bias and sensing paths. |
| Reverse Leakage (IR) | 1 µA @ 30 V - Ensures minimal DC error in precision voltage reference or sample-hold circuits. |
| Capacitance (Cd) | 5 pF @ 0 V, 1 MHz - Supports >100 MHz signal integrity in RF detector or high-speed logic clamp applications. |
| Peak Forward Current (IFSM) | 200 mA @ 10 ms - Withstands short-duration surge events such as ESD-induced current spikes. |
| Junction Temperature (Tj) | 150 °C - Certified for under-hood automotive use without derating in standard PCB layouts. |
Pinout & Package
Package: SOT23 (TO-236AB), surface-mounted, 3-terminal plastic package; 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch. Standard footprint compatible with reflow and wave soldering per Nexperia's recommended land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 (A1) | Input node for first Schottky path; connects to signal source or rail requiring clamping. |
| 2 | Cathode of Diode 2 (K2) | Output node for second Schottky path; used for steering or bidirectional clamping termination. |
| 3 | Cathode of Diode 1 / Anode of Diode 2 (K1; A2) | Shared terminal enabling compact dual-diode configurations - e.g., series connection or common-node clamping. |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | No minority carrier storage → sub-nanosecond recovery; eliminates turn-off delay in pulse shaping. |
| Low leakage current | ≤10 µA @ 40 V ensures stable DC bias points in high-impedance analog front-ends. |
| AEC-Q101 qualification | Validated for automotive Grade 1 (-40 °C to +125 °C ambient) per stress test requirements. |
| Low capacitance | 5 pF enables use in 100+ MHz RF detector and high-frequency signal routing without loading. |
Applications
| Automotive CAN Bus Protection | USB 2.0 Signal Clamping |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines against ESD and inductive transients in vehicle ECUs. IC Role / Device Role / Timing Role: Discrete dual Schottky clamp providing bidirectional low-VF path to VCC and GND rails. Use Value: 380 mV forward drop ensures clamping occurs before damage threshold of transceiver ICs; 5 pF avoids signal edge degradation at 1 Mbps. |
Use Scenario: Preventing overshoot/undershoot on D+/D− lines during hot-plug events in USB peripherals. IC Role / Device Role / Timing Role: Dual low-capacitance Schottky diode array performing rail-to-rail voltage limiting. Use Value: Shared-pin topology (pin 3) allows compact layout matching USB differential pair spacing; 120 mA IF rating handles transient surges without degradation. |
| Low-Power Sensor Biasing | High-Speed Logic Level Translation |
Use Scenario: Providing precision bias current and reverse-polarity protection for MEMS pressure sensors in engine manifolds. IC Role / Device Role / Timing Role: Dual Schottky used as active bias network and polarity guard in 3.3 V sensor supply chain. Use Value: 1 µA IR at 30 V prevents measurable offset drift in microamp-level sensor excitation circuits over temperature. |
Use Scenario: Translating 5 V logic signals to 3.3 V I/O domains in industrial PLC modules with minimal propagation delay. IC Role / Device Role / Timing Role: Schottky clamping diode pair limiting input swing to safe voltage range for 3.3 V receivers. Use Value: Sub-ns switching and 5 pF capacitance preserve rise/fall times <1 ns, avoiding timing violations in 50 MHz digital interfaces. |
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 NSR20F40NXT5G | Higher VF (450 mV @ 1 mA); same 40 V VR; SOD-323 package (smaller, 2-terminal dual). | Lacks shared-terminal flexibility; requires separate routing for dual-path configurations. | Preferred when board area is more constrained than routing density; not suitable for shared-node topologies. |
| Vishay SDURB140Q-13 | Higher IF (200 mA continuous); higher Cd (12 pF); TO-236AB package but non-AEC-Q101 rated. | Not qualified for automotive use; higher capacitance limits >50 MHz applications. | Select only for industrial/non-automotive designs needing higher continuous current handling. |
Compared with NSR20F40NXT5G and SDURB140Q-13, the BAS40-04-Q uniquely balances AEC-Q101 compliance, shared-terminal versatility, and 5 pF/380 mV performance - making it optimal for automotive signal integrity where layout efficiency and qualification are jointly required.
Availability
BAS40-04-Q is available at Aetrix Electronics and suitable for automotive ECU protection, USB interface clamping, and low-power sensor biasing requiring stable component supply across production lifecycles.
Supply support for BAS40-04-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 essential semiconductors - including discrete devices, logic ICs, and MOSFETs - with leadership in automotive-qualified components.
The BAS40-04-Q belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for robust, low-loss signal conditioning and transient protection in automotive and industrial control systems.
FAQ
Is BAS40-04-Q suitable for bidirectional ESD protection?
Yes - its dual Schottky structure with shared terminal (pin 3) enables symmetrical clamping between signal and both VCC and GND rails. Combined with 40 V VR and 200 mA IFSM, it meets IEC 61000-4-2 Level 4 (±15 kV air) when properly laid out with low-inductance grounding.
What is the thermal derating behavior above 25 °C ambient?
At Tamb = 85 °C, the maximum continuous forward current reduces to 75 mA per diode based on Rth(j-a) = 500 K/W and Tj(max) = 150 °C. Derating follows linear interpolation: IF(max) = 120 mA × (1 − (Tamb − 25)/125). No forced airflow is assumed.
Can BAS40-04-Q replace BAS40-05-Q in existing designs?
No - BAS40-04-Q has pinout A1/K2/K1+A2, whereas BAS40-05-Q uses A1/A2/K (common cathode). The internal connectivity differs fundamentally; substituting them without layout revision will cause functional failure in clamping or steering circuits.
Does the 1 µA reverse leakage apply across the full temperature range?
No - the 1 µA value is specified at Tamb = 25 °C and VR = 30 V. At 125 °C, IR rises to ~100 µA (per Fig. 2), so designs operating near Tj(max) must account for increased leakage in high-impedance nodes or precision references.
BAS40-04-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):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 120mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 40 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 40 V
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAS40-04-QVL FAQ
1.How can I place an order for BAS40-04-QVL through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40-04-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 BAS40-04-QVL reliable?
The price and inventory of BAS40-04-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40-04-QVL is usually 5 days.
3.What payment methods are accepted for BAS40-04-QVL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40-04-QVL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40-04-QVL?
BAS40-04-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40-04-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 BAS40-04-QVL?
For technical support, including BAS40-04-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40-04-QVL requirements.
6.How does Aetrix verify that BAS40-04-QVL is sourced from the original manufacturer or authorized distributors?
All BAS40-04-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 BAS40-04-QVL meets industry standards.
7.What is the process for return or replacement of BAS40-04-QVL?
All BAS40-04-QVL units undergo pre-shipment inspection (PSI). If there is an issue with BAS40-04-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 BAS40-04-QVL part is unused and in its original packaging.
Return procedure for BAS40-04-QVL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS40-04-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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