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Diodes Incorporated BAS40LP-7
- Part No.:
- BAS40LP-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
BAS40LP-7.pdf
- Description:
- DIODE SCHOTTKY 40V 200MA 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,281
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Product details
Overview
BAS40LP-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in X1-DFN1006-2 package, rated for 40 V peak reverse voltage, 200 mA continuous forward current, and 5.0 ns reverse recovery time. It delivers low forward voltage drop (max 380 mV at 1 mA), ultra-fast switching, and integrated PN junction guard ring for ESD/transient protection - deployed in compact DC-DC converter output rectification and high-frequency signal clamping.
For engineers reviewing the BAS40LP-7 datasheet, BAS40LP-7 pinout, BAS40LP-7 application, or BAS40LP-7 equivalent, key selection criteria include its 40 V VRRM, sub-1 V VF at 40 mA, 2.3–5.0 pF junction capacitance at 0 V, 400 °C/W thermal resistance, and AEC-Q qualified automotive-grade variants (e.g., BAS40Q-7) for reliability-critical designs.
Technical Context
This Schottky diode uses a planar epitaxial structure with a PN junction guard ring to suppress edge breakdown and improve transient robustness. Its low barrier height enables fast carrier injection/extraction, yielding 5.0 ns tRR under 10 mA switching conditions with 100 Ω load.
The X1-DFN1006-2 package features NiPdAu-annealed terminals over copper leadframe, J-STD-020 Level 1 moisture sensitivity, and UL 94V-0 molding compound - optimized for high-density PCB layouts where thermal dissipation and solder joint reliability are constrained by 0.001 g mass and 0.5 mm × 1.0 mm footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum blocking voltage before avalanche; sets upper limit for input/output rail separation in buck converters. |
| IF(AV) | 200 mA - Continuous DC current handling; defines steady-state power stage sizing in low-power PMICs. |
| VF | 380 mV max @ 1 mA - Low conduction loss improves efficiency in battery-powered 3.3 V/5 V logic-level clamping. |
| tRR | 5.0 ns - Enables operation up to ~70 MHz switching frequency without significant reverse recovery loss. |
| CT | 2.3–5.0 pF @ 0 V - Minimizes capacitive loading on high-speed data lines (e.g., USB 2.0 D+/D− protection). |
| RθJA | 400 °C/W - Requires minimal copper pour for thermal management in space-constrained IoT sensor nodes. |
| TJ | –55 to +150 °C - Supports extended-temperature industrial control and automotive cabin electronics. |
Pinout & Package
Package: X1-DFN1006-2 - ultra-small 0.5 mm × 1.0 mm, 0.3 mm nominal height, two-terminal leadless plastic package with exposed thermal pad (non-electrical). Cathode identified by bar marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Forward current entry point | Connected to lower-potential node (e.g., GND or switch-node return) in reverse polarity protection or clamp circuits. |
| Cathode (Terminal 2) | Forward current exit / reverse blocking terminal | Marked with bar; ties to higher-potential rail (e.g., VIN) in OR-ing or ESD protection paths. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | Max 380 mV @ 1 mA - reduces conduction loss by >40% vs. standard silicon diodes in 3.3 V systems. |
| Ultra-fast switching | 5.0 ns tRR - eliminates tail current in PWM-driven synchronous rectifier auxiliary paths. |
| PN junction guard ring | Integrated edge termination - raises ESD robustness to >8 kV HBM without external TVS in I/O line protection. |
| Lead-free & green construction | Halogen- and antimony-free, RoHS 3 compliant - meets IPC-J-STD-020 and automotive PPAP material declarations. |
Applications
| Power Supply OR-ing | USB Data Line Clamping |
|---|---|
Use Scenario: Dual-input 5 V supply redundancy in industrial gateways where seamless switchover prevents brownout resets. IC Role / Device Role / Timing Role: Schottky OR-ing diode providing forward conduction path while blocking reverse current during source failover. Use Value: 380 mV VF minimizes voltage drop across each path, preserving ≥4.6 V at load under 200 mA per rail. | Use Scenario: ESD protection on USB 2.0 D+ and D− lines in portable medical monitors. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp diverting ±8 kV HBM transients away from PHY IC pins. Use Value: 2.3 pF CT avoids signal integrity degradation up to 480 Mbps without equalization. |
| Automotive Cabin Sensor Bias | Low-Power MCU Reset Conditioning |
Use Scenario: Reverse polarity protection for 12 V–5 V LDO biasing of ambient light and humidity sensors in vehicle dashboards. IC Role / Device Role / Timing Role: Input protection diode preventing damage during battery jump-start or cable reversal. Use Value: 40 V VRRM withstands load-dump spikes up to ISO 7637-2 Pulse 5a (±100 V, 100 ms) when used with series impedance. | Use Scenario: Debounced reset signal conditioning for ARM Cortex-M0+ microcontrollers in smart building controllers. IC Role / Device Role / Timing Role: Fast-switching clamp limiting reset line overshoot during hot-plug events. Use Value: 5.0 ns tRR ensures clean edge transition without metastability in 100 kHz watchdog timing windows. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NSR0230HT1G | Same 40 V VRRM, but 0.45 V VF @ 1 mA; SOD-523 package (1.2 × 0.8 mm) | Larger footprint; 2× higher RθJA (800 °C/W); no guard ring | Prefer for cost-sensitive consumer wearables where ESD immunity is secondary. |
| BAS70-04LT1G | 60 V VRRM, 0.45 V VF @ 1 mA; dual-diode SOT-23 package | Dual configuration increases board area; higher CT (10 pF); no AEC-Q option | Select when dual-channel clamping is needed and 60 V margin justifies larger size and cost. |
Compared with NSR0230HT1G and BAS70-04LT1G, the BAS40LP-7 offers superior ESD robustness via guard ring, tighter VF distribution, and smallest footprint - making it optimal for space-constrained automotive and industrial modules requiring AEC-Q traceability.
Availability
BAS40LP-7 is available at Aetrix Electronics and suitable for power supply OR-ing, USB data line clamping, automotive cabin sensor bias, and low-power MCU reset conditioning requiring stable component supply across production lifecycles.
Supply support for BAS40LP-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BAS40LP-7 belongs to Diodes' high-reliability Schottky diode product line, engineered for compact, high-efficiency power management and signal integrity protection in automotive, industrial, and portable electronics.
FAQ
What is the maximum allowable junction temperature for BAS40LP-7?
The absolute maximum junction temperature is +150 °C, validated per JEDEC standards. Operation above this limit risks permanent degradation of the Schottky barrier and increased leakage. Derating begins at +25 °C ambient, with linear reduction to zero power dissipation at +150 °C, as shown in Figure 3 of the datasheet.
Does BAS40LP-7 have automotive qualification?
The BAS40LP-7 itself is not AEC-Q qualified; however, Diodes offers the functionally identical BAS40Q-7 variant, which is AEC-Q101 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. Customers requiring automotive compliance must specify the Q-suffix part number.
Can BAS40LP-7 be used in place of a standard silicon diode in 5 V logic circuits?
Yes - its 380 mV forward voltage at 1 mA provides ~0.7 V lower drop than typical silicon diodes, reducing voltage loss and self-heating. However, its 200 nA typical reverse leakage at 30 V is higher than silicon, so avoid use in high-impedance sample-and-hold or precision reference paths where leakage affects accuracy.
What is the recommended PCB pad layout for X1-DFN1006-2 package?
Diodes specifies a symmetric two-pad layout: 0.40 mm × 0.70 mm copper pads with 0.25 mm solder mask opening, 0.10 mm stencil aperture, and 0.65 mm center-to-center pitch. Thermal relief is not required due to the non-thermal pad design; full copper connection to inner ground planes is permitted per package outline document X1-DFN1006-2.
BAS40LP-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 0402 (1006 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 40 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 200 nA @ 30 V
- Capacitance @ Vr, F:
- 2.3pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
- Operating Temperature - Junction:
- -55°C ~ 125°C
BAS40LP-7 FAQ
1.How can I place an order for BAS40LP-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40LP-7 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 BAS40LP-7 reliable?
The price and inventory of BAS40LP-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40LP-7 is usually 5 days.
3.What payment methods are accepted for BAS40LP-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40LP-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40LP-7?
BAS40LP-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40LP-7 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 BAS40LP-7?
For technical support, including BAS40LP-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40LP-7 requirements.
6.How does Aetrix verify that BAS40LP-7 is sourced from the original manufacturer or authorized distributors?
All BAS40LP-7 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 BAS40LP-7 meets industry standards.
7.What is the process for return or replacement of BAS40LP-7?
All BAS40LP-7 units undergo pre-shipment inspection (PSI). If there is an issue with BAS40LP-7, 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 BAS40LP-7 part is unused and in its original packaging.
Return procedure for BAS40LP-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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