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Nexperia USA Inc. BAS40-04,215
- Part No.:
- BAS40-04,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS40-04,215.pdf
- Description:
- DIODE ARR SCHOTTKY 40V TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:92,026
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Product details
Overview
BAS40-04 from Nexperia is a general-purpose dual Schottky diode in SOT23 package, configured as two independent diodes sharing a common terminal (A1–K1/K2–A2 topology), with 40 V reverse voltage rating, 120 mA forward current capability, and 380 mV typical forward voltage at 1 mA - used for ultra-high-speed switching and voltage clamping in compact DC-DC converter feedback paths and signal line protection circuits.
For engineers reviewing the BAS40-04 datasheet, BAS40-04 pinout, BAS40-04 application, or BAS40-04 equivalent, this page delivers verified electrical parameters, validated dual-diode terminal mapping, AEC-Q101 qualification status, thermal resistance data, and real-world clamping/switching use context - all grounded in Nexperia's November 2024 product data sheet.
Technical Context
The BAS40-04 integrates two discrete Schottky junctions in a single SOT23-3 package with shared cathode/anode configuration (Pin 1 = A1, Pin 2 = K2, Pin 3 = K1/A2), enabling compact dual-path rectification or clamping without external interconnects. Its low 5 pF capacitance at 0 V and 1 µA max reverse leakage at 30 V support high-frequency signal integrity in 10–100 MHz applications.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing requirements and operates across –65 °C to +150 °C ambient, with junction-to-ambient thermal resistance of 500 K/W on standard FR4 PCB - confirming suitability for thermally constrained under-hood modules and power management IC auxiliary rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - supports clamping up to 36 V automotive supply transients without breakdown. |
| Forward Current (IF) | 120 mA continuous - sufficient for biasing, level-shifting, and low-power signal routing. |
| Forward Voltage (VF) | 380 mV @ 1 mA - enables low-loss signal steering in battery-sensitive portable logic interfaces. |
| Reverse Leakage (IR) | 10 µA @ 40 V - ensures minimal standby current in always-on sensor monitoring circuits. |
| Capacitance (Cd) | 5 pF @ 0 V, 1 MHz - preserves signal edge fidelity in >50 MHz digital I/O and RF detector inputs. |
| Thermal Resistance (Rth(j-a)) | 500 K/W - defines derating curve for sustained operation on unheatsinked 2-layer PCBs. |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), optimized for reflow and wave soldering per Nexperia footprints sot023_fr and sot023_fw.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 (A1) | Input node for first Schottky path; connects to signal source or positive rail in clamp configuration. |
| 2 | Cathode of Diode 2 (K2) | Output node for second diode; ties to reference or ground in dual-rail protection schemes. |
| 3 | Cathode of Diode 1 / Anode of Diode 2 (K1;A2) | Shared terminal enabling series-connected or complementary clamping topologies in 3-pin layout. |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | Sub-nanosecond recovery enabled by low stored charge and Schottky barrier physics - critical for >100 MHz clock line clamping. |
| Low leakage current | ≤10 µA at VR = 40 V ensures <1 µW standby dissipation in always-on IoT sensor nodes. |
| Low capacitance | 5 pF at zero bias minimizes loading on high-Z analog inputs and fast digital buses (e.g., I²C, SPI). |
| AEC-Q101 qualification | Validated for automotive temperature cycling, humidity, and high-temperature reverse bias - supports ASIL-B subsystems. |
| Small SOT23 footprint | Reduces PCB area by >60% vs. dual-SOD-323 solutions - essential for space-constrained ADAS camera modules. |
Applications
| USB Data Line Protection | DC-DC Converter Feedback Clamp |
|---|---|
|
Use Scenario: Protecting USB 2.0 D+/D− lines against ESD and overvoltage events in portable medical devices. IC Role / Device Role / Timing Role: Dual Schottky clamping diode providing bidirectional low-capacitance path to VBUS and GND. Use Value: 5 pF capacitance prevents signal rise-time degradation; 380 mV VF ensures clamping threshold stays below 0.7 V for TTL-compatible logic. |
Use Scenario: Clamping feedback voltage node in isolated flyback converters to prevent regulation overshoot during load transients. IC Role / Device Role / Timing Role: Fast-recovery dual diode limiting error amplifier input swing to ±0.4 V. Use Value: 120 mA IF rating handles peak transient currents; 40 V VR withstands reflected primary-side spikes up to 36 V. |
| Automotive CAN Transceiver Bias | Low-Power Logic Level Shifter |
|
Use Scenario: Providing bias current and transient suppression for split-termination resistors in 12 V automotive CAN FD physical layer interfaces. IC Role / Device Role / Timing Role: Dual Schottky pair supplying matched bias to CANH/CANL termination networks while absorbing bus faults. Use Value: AEC-Q101 qualification guarantees operation at 125 °C ambient; 1 µA IR at 30 V minimizes quiescent current drain. |
Use Scenario: Bidirectional level translation between 1.8 V microcontroller GPIO and 3.3 V sensor interface in battery-powered wearables. IC Role / Device Role / Timing Role: Passive dual-diode shifter using shared terminal (Pin 3) to establish reference midpoint. Use Value: 380 mV VF enables sub-0.5 V offset; SOT23 size fits 0402-class board areas without requiring active ICs. |
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 NSR20F40HT1G | Higher VF (450 mV @ 1 mA); same 40 V VR; SOT-23 package; not AEC-Q101 qualified. | Lacks automotive qualification; higher conduction loss limits use in battery-critical systems. | Select when cost sensitivity outweighs AEC-Q101 requirement and thermal budget allows +70 mV VF penalty. |
| Vishay SDM40E3-7-F | Single-diode SOD-323 package; 40 V VR; 200 mA IF; 450 mV VF; AEC-Q101 qualified. | Requires two devices for dual function; larger PCB footprint than BAS40-04's integrated dual topology. | Choose only if discrete placement simplifies layout or if higher 200 mA IF is mandatory for both paths. |
Compared with NSR20F40HT1G and SDM40E3-7-F, the BAS40-04 uniquely combines AEC-Q101 compliance, true dual-diode integration in SOT23, and lowest VF among qualified alternatives - making it optimal for space- and reliability-constrained automotive and portable power designs.
Availability
BAS40-04 is available at Aetrix Electronics and suitable for automotive infotainment head units, industrial PLC I/O modules, and battery-powered medical sensors requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BAS40-04 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 components - delivering discrete, logic, and MOSFET solutions with automotive, industrial, and mobile application focus.
The BAS40-04 belongs to Nexperia's general-purpose Schottky diode portfolio, engineered specifically for compact, high-speed clamping and switching in thermally demanding environments where AEC-Q101 compliance and low parasitic capacitance are mandatory.
FAQ
What is the maximum junction temperature for the BAS40-04?
The absolute maximum junction temperature (Tj) is 150 °C, as defined in the Limiting Values table per IEC 60134. This rating is maintained across the full ambient range (–65 °C to +150 °C), and thermal design must ensure Rth(j-a) × Pdiss ≤ (150 − Tamb) to avoid exceeding this limit.
Is the BAS40-04 suitable for bidirectional ESD protection?
No - the BAS40-04 is a dual unidirectional Schottky diode with fixed anode/cathode polarity per path (A1–K1 and A2–K2). It lacks symmetric bidirectional breakdown and is not rated for IEC 61000-4-2 ESD immunity; dedicated TVS arrays like PESD5V0S1BA should be used instead.
How does the shared terminal (Pin 3) affect circuit implementation?
Pin 3 serves as both K1 (cathode of Diode 1) and A2 (anode of Diode 2), enabling three-terminal configurations such as series clamping (A1→K1/A2→K2) or complementary rail-to-rail clamping. This eliminates need for external wiring between diodes, reducing parasitic inductance in high-speed layouts.
Can the BAS40-04 replace the BAS40-05 or BAS40-07 in existing designs?
No - BAS40-05 (45 V VR) and BAS40-07 (70 V VR) have higher reverse voltage ratings and different pinouts (BAS40-05 uses A1–K1–A2; BAS40-07 uses A1–K1–K2). Substitution requires verification of voltage margin, terminal mapping, and layout compatibility - no drop-in replacement exists.
BAS40-04,215 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 (DC)
- 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 (Max)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAS40-04,215 FAQ
1.How can I place an order for BAS40-04,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40-04,215 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 BAS40-04,215 reliable?
The price and inventory of BAS40-04,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40-04,215 is usually 5 days.
3.What payment methods are accepted for BAS40-04,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40-04,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40-04,215?
BAS40-04,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40-04,215 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 BAS40-04,215?
For technical support, including BAS40-04,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40-04,215 requirements.
6.How does Aetrix verify that BAS40-04,215 is sourced from the original manufacturer or authorized distributors?
All BAS40-04,215 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 BAS40-04,215 meets industry standards.
7.What is the process for return or replacement of BAS40-04,215?
All BAS40-04,215 units undergo pre-shipment inspection (PSI). If there is an issue with BAS40-04,215, 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 BAS40-04,215 part is unused and in its original packaging.
Return procedure for BAS40-04,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS40-04,215 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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