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Nexperia USA Inc. BAS40L,315
- Part No.:
- BAS40L,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-882
- Datasheet:
-
BAS40L,315.pdf
- Description:
- DIODE SCHOTT 40V 120MA DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:96,468
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Product details
Overview
BAS40L from Nexperia is a general-purpose Schottky diode in a DFN1006-2 (SOD882) package, designed for ultra-high-speed switching and voltage clamping. It delivers 40 V reverse voltage rating, 120 mA forward current capability, 380 mV forward voltage at 1 mA, 5 pF capacitance at 0 V, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the BAS40L datasheet, BAS40L pinout, BAS40L application, or BAS40L equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, automotive-qualified thermal and switching performance, and direct alternative part comparisons with documented functional trade-offs.
Technical Context
The BAS40L operates as a low-leakage, low-capacitance Schottky barrier diode optimized for fast transient response in signal-level clamping and high-frequency rectification. Its 1 µA reverse current at 30 V and 10 µA at 40 V supports stable biasing in precision analog front-ends, while its 500 K/W junction-to-ambient thermal resistance reflects performance on standard FR4 PCBs with single-sided copper.
Designed for pulsed operation (tp ≤ 300 µs, duty cycle ≤ 0.02), it maintains consistent VF across temperature (−40 °C to 125 °C) and exhibits differential resistance below 1 Ω at 10 mA - enabling efficient low-voltage signal routing without significant IR drop or thermal drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - supports clamping in 3.3 V/5 V/12 V logic and power rails without breakdown under transient overvoltage. |
| Forward Voltage (VF) | 380 mV @ 1 mA - enables low-loss signal steering in battery-sensitive or low-power wake-up circuits. |
| Reverse Current (IR) | 1 µA @ 30 V - ensures minimal leakage in high-impedance sample-and-hold or reference divider networks. |
| Diode Capacitance (Cd) | 5 pF @ 0 V, 1 MHz - preserves signal integrity up to ~300 MHz in RF detector or ESD protection paths. |
| Thermal Resistance (Rth(j-a)) | 500 K/W - defines maximum power dissipation (~25 mW) on standard FR4 before exceeding 150 °C junction limit. |
| Junction Temperature (Tj) | 150 °C - allows operation in under-hood automotive modules and industrial controllers without derating at ambient ≤ 85 °C. |
Pinout & Package
Encapsulated in a leadless DFN1006-2 (SOD882) package measuring 1.0 mm × 0.6 mm × 0.48 mm with 0.65 mm pitch, the BAS40L uses a top-side cathode marking bar for polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to lower-potential node; marked by bar on top surface; carries return current during conduction. |
| 2 | Anode (A) | Connected to higher-potential node; accepts forward bias; serves as input for clamping or rectification path. |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | Sub-nanosecond recovery enabled by Schottky barrier structure - critical for >100 MHz pulse shaping and edge detection. |
| Low leakage current | 1 µA max at 30 V reverse bias - maintains accuracy in high-Z sensor interfaces and battery monitoring dividers. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics - no additional qualification required. |
| Ultra-small footprint | DFN1006-2 (0.6 mm × 1.0 mm) - enables dense layout in space-constrained modules like ADAS camera ECUs and portable medical sensors. |
Applications
| USB Data Line Clamping | Automotive CAN Bus Protection |
|---|---|
|
Use Scenario: Bidirectional ESD suppression on USB 2.0 D+/D− lines in portable infotainment head units. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp that conducts transients above 3.6 V while preserving signal rise/fall times. Use Value: 5 pF capacitance prevents data eye closure; 380 mV VF ensures clamping threshold stays below USB receiver VIH min. |
Use Scenario: Transient voltage suppression on CAN_H/CAN_L lines in 12 V automotive gateways. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp protecting PHY transceivers from ISO 7637-2 pulses. Use Value: AEC-Q101 qualification guarantees reliability; 40 V VR withstands load-dump surges up to 40 V peak. |
| Low-Power Sensor Biasing | RF Detector Input Stage |
|
Use Scenario: Reverse-polarity protection and bias isolation for MEMS pressure sensors powered from coin-cell batteries. IC Role / Device Role / Timing Role: Series-blocking diode preventing backfeed while minimizing voltage loss in supply path. Use Value: 380 mV VF at 1 mA reduces dropout by >2× versus standard silicon diodes - extending battery life by weeks. |
Use Scenario: Signal envelope detection in 2.4 GHz ISM-band receiver front-ends for BLE/Wi-Fi coexistence modules. IC Role / Device Role / Timing Role: Zero-bias RF detector diode converting RF amplitude to DC baseband voltage. Use Value: 5 pF capacitance and sub-1 Ω dynamic resistance enable usable sensitivity down to −20 dBm at 2.4 GHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR0230HT1G | Same DFN1006-2 package; 30 V VR (vs. 40 V); 450 mV VF @ 1 mA; 0.5 µA IR @ 25 V. | Limited to ≤30 V systems; less margin for automotive load-dump events. | Select when lower VF is prioritized over reverse voltage headroom in 3.3 V-only designs. |
| Vishay VSB1040-H | DO-219AB package (larger); 40 V VR; 420 mV VF @ 1 mA; 2 µA IR @ 30 V; not AEC-Q101 qualified. | Requires more PCB area; lacks automotive qualification; higher leakage affects precision biasing. | Choose only for non-automotive industrial use where manual soldering or thermal mass is preferred. |
Compared with NSR0230HT1G and VSB1040-H, the BAS40L uniquely combines AEC-Q101 qualification, 40 V reverse rating, and 5 pF capacitance in the smallest footprint - making it optimal for space-constrained, safety-critical automotive signal conditioning.
Availability
BAS40L is available at Aetrix Electronics and suitable for USB interface protection, automotive CAN bus guard circuits, and low-power sensor biasing requiring stable component supply across production lifecycles.
Supply support for BAS40L 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 BAS40L belongs to Nexperia's general-purpose Schottky diode product line, engineered specifically for high-speed signal integrity and robustness in automotive and industrial edge-sensing applications.
FAQ
Is the BAS40L suitable for continuous DC forward conduction?
No - the BAS40L is characterized and specified for pulsed operation (tp ≤ 300 µs, duty cycle ≤ 0.02). Its 120 mA forward current rating applies only under those conditions. For continuous DC use, derating to ≤30 mA is required to stay within the 150 °C junction temperature limit given its 500 K/W thermal resistance on standard FR4.
What does the 'S6' marking on the device indicate?
The 'S6' marking is the manufacturer-specific code for the BAS40L type, per Table 4 of the datasheet. It appears adjacent to the cathode bar on the top surface of the DFN1006-2 package and is used for traceability and visual polarity verification during assembly and inspection.
Can the BAS40L replace a 1N5711 in RF detector applications?
Yes - the BAS40L offers lower capacitance (5 pF vs. typical 1.5–2 pF for 1N5711, but with higher series resistance) and superior consistency in SOD882 packaging. Its 380 mV VF and 5 pF Cd support RF detection up to 2.4 GHz, though system-level validation is required due to differences in package parasitics and thermal behavior.
Does the AEC-Q101 qualification cover all temperature ranges listed in the datasheet?
Yes - AEC-Q101 qualification includes testing across the full specified ambient temperature range (−65 °C to +150 °C) and junction temperature range (−65 °C to +150 °C), with stress tests covering temperature cycling, HTRB, HTGB, and ESD per the Q101 standard. This validates suitability for under-hood and transmission-control module environments.
BAS40L,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 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
- Capacitance @ Vr, F:
- 5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006-2
- Operating Temperature - Junction:
- 150°C (Max)
BAS40L,315 FAQ
1.How can I place an order for BAS40L,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40L,315 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 BAS40L,315 reliable?
The price and inventory of BAS40L,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40L,315 is usually 5 days.
3.What payment methods are accepted for BAS40L,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40L,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40L,315?
BAS40L,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40L,315 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 BAS40L,315?
For technical support, including BAS40L,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40L,315 requirements.
6.How does Aetrix verify that BAS40L,315 is sourced from the original manufacturer or authorized distributors?
All BAS40L,315 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 BAS40L,315 meets industry standards.
7.What is the process for return or replacement of BAS40L,315?
All BAS40L,315 units undergo pre-shipment inspection (PSI). If there is an issue with BAS40L,315, 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 BAS40L,315 part is unused and in its original packaging.
Return procedure for BAS40L,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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