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Diodes Incorporated BAS40LP-7B
- Part No.:
- BAS40LP-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
BAS40LP-7B.pdf
- Description:
- DIODE SCHOTTKY 40V 200MA 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:8,280
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Product details
Overview
BAS40LP-7B from Diodes Incorporated is a surface-mount Schottky barrier diode in an ultra-small 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), low junction capacitance (typ 2.3 pF at 0 V), and integrated PN junction guard ring for ESD/transient protection-used in high-frequency DC-DC converter output rectification and portable power management.
For engineers reviewing the BAS40LP-7B datasheet, BAS40LP-7B pinout, BAS40LP-7B application, or BAS40LP-7B equivalent, key selection criteria include its 40 V VRRM, sub-400 mV VF at low current, 2.3 pF CT, 5.0 ns tRR, and leadless DFN footprint compatibility with space-constrained PCB layouts in battery-powered and automotive auxiliary circuits.
Technical Context
The BAS40LP-7B employs a planar Schottky junction structure optimized for fast switching and low conduction loss in low-voltage, high-frequency rectification. Its guard-ringed die design enhances robustness against electrostatic discharge and transient overvoltage events without external protection components.
Thermal performance is defined by a 400 °C/W junction-to-ambient thermal resistance on standard FR-4 with 2 oz copper, supporting operation from –55 °C to +150 °C. The device meets JEDEC high-reliability standards and is fully RoHS-compliant with halogen- and antimony-free "Green" molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum blocking voltage for use in ≤36 V nominal power rails |
| IF(AV) | 200 mA - continuous DC output rectification capability in compact converters |
| VF | 380 mV max @ 1 mA - enables low-loss biasing and signal clamping in low-current paths |
| tRR | 5.0 ns - supports switching frequencies up to ~100 MHz in snubberless flyback or buck sync rectifier designs |
| CT | 2.3 pF typ @ 0 V - minimizes capacitive loading in RF detector and high-speed sampling circuits |
| RθJA | 400 °C/W - requires minimal copper area for thermal relief in thin-profile consumer PCBs |
| PD | 250 mW - limits self-heating under sustained 200 mA load at ambient ≤85 °C |
Pinout & Package
Package: X1-DFN1006-2 - ultra-compact 1.0 mm × 0.6 mm, 0.5 mm height, leadless plastic package with exposed thermal pad (cathode-side terminal). Compliant with IPC-7351B footprint standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Connected to input/source side in forward-biased rectification; soldered to trace with minimal inductance |
| 2 (Cathode) | Cathode connection | Marked with bar on top surface; tied to output/load or ground return path; serves as primary thermal path via exposed pad |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | VF ≤ 380 mV @ 1 mA enables >95% efficiency in 3.3 V/5 V synchronous rectifier stages |
| Fast reverse recovery | tRR = 5.0 ns reduces switching loss and EMI in ≥10 MHz DC-DC controllers |
| ESD-protected junction | Integrated PN guard ring withstands ≥8 kV HBM per AEC-Q101, eliminating discrete TVS in cost-sensitive designs |
| Ultra-small footprint | X1-DFN1006-2 occupies 0.6 mm² board area-ideal for wearables and TWS earbud charging circuits |
Applications
| USB Power Switching | RF Signal Detection |
|---|---|
Use Scenario: Reverse polarity protection and load switching in USB Type-C port power paths. IC Role / Device Role / Timing Role: Schottky diode used as OR-ing element between dual-input power sources (e.g., adapter + battery). Use Value: 380 mV VF minimizes voltage drop across 5 V rail, preserving regulation margin for downstream PMICs. | Use Scenario: Envelope detection in 2.4 GHz ISM-band receiver front-ends. IC Role / Device Role / Timing Role: Low-capacitance Schottky rectifier converting RF AC to baseband DC envelope signal. Use Value: 2.3 pF CT preserves high-frequency signal integrity and improves detector sensitivity above 1 GHz. |
| Automotive Body Control | Portable Battery Management |
Use Scenario: Clamping and flyback suppression in 12 V solenoid driver circuits (e.g., door lock actuators). IC Role / Device Role / Timing Role: Freewheeling diode absorbing inductive kickback during MOSFET turn-off. Use Value: 5.0 ns tRR prevents voltage overshoot beyond 40 V rating, reducing need for snubbers. | Use Scenario: Charging path isolation in single-cell Li-ion battery packs with dual-input charging (USB + wireless). IC Role / Device Role / Timing Role: Low-leakage (20 nA typ) Schottky preventing reverse discharge between parallel charge sources. Use Value: 20 nA IR at 30 V ensures <1 μA standby drain-extending shelf life of sealed medical devices. |
Availability
BAS40LP-7B is available at Aetrix Electronics and suitable for USB power routing, RF envelope detection, automotive solenoid drivers, and portable battery isolation requiring stable component supply across high-mix production runs.
Supply support for BAS40LP-7B 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 the Americas.
The BAS40LP belongs to Diodes' high-reliability Schottky diode product line, engineered for space-constrained, high-frequency power conversion and signal conditioning in automotive, industrial, and portable electronics.
FAQ
What is the cathode marking convention for BAS40LP-7B?
The cathode is marked with a bar on the top surface of the X1-DFN1006-2 package. Pin 2 (cathode) aligns with the bar side; the opposite edge is pin 1 (anode). This matches JEDEC-standard DFN orientation and is verified in Diodes' package outline DS30503 Rev. 18–2, page 5.
Does BAS40LP-7B meet AEC-Q101 requirements?
No-BAS40LP-7B is qualified to JEDEC high-reliability standards but is not AEC-Q101 certified. Diodes offers the automotive-grade BAS40Q-7B (Q-suffix) for AEC-Q101-compliant applications, with full PPAP documentation and IATF 16949 manufacturing.
Can BAS40LP-7B replace BAT54S in a dual-diode configuration?
No-BAS40LP-7B is a single-die, single-anode/single-cathode Schottky diode in DFN1006. BAT54S is a dual-series diode in SOT-23. They differ in pin count, topology, and package; no direct functional or pin-for-pin replacement exists without PCB redesign.
What is the recommended pad layout for X1-DFN1006-2?
Diodes specifies a symmetric land pattern: 0.40 mm × 0.70 mm pads with 0.15 mm solder mask opening, 0.25 mm thermal pad clearance, and 0.65 mm center-to-center pitch. Full dimensions are published in Diodes' package outline document at diodes.com/package-outlines.html (X1-DFN1006-2).
BAS40LP-7B 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 ~ 150°C
BAS40LP-7B FAQ
1.How can I place an order for BAS40LP-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40LP-7B 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-7B reliable?
The price and inventory of BAS40LP-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40LP-7B is usually 5 days.
3.What payment methods are accepted for BAS40LP-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40LP-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40LP-7B?
BAS40LP-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40LP-7B 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-7B?
For technical support, including BAS40LP-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40LP-7B requirements.
6.How does Aetrix verify that BAS40LP-7B is sourced from the original manufacturer or authorized distributors?
All BAS40LP-7B 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-7B meets industry standards.
7.What is the process for return or replacement of BAS40LP-7B?
All BAS40LP-7B units undergo pre-shipment inspection (PSI). If there is an issue with BAS40LP-7B, 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-7B part is unused and in its original packaging.
Return procedure for BAS40LP-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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