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Diodes Incorporated BAS40-05T-7-F
- Part No.:
- BAS40-05T-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
BAS40-05T-7-F.pdf
- Description:
- DIODE ARR SCHOT 40V 200MA SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:42,840
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Product details
Overview
BAS40-05T-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode rated for 40 V peak repetitive reverse voltage, 200 mA forward current, and 5.0 ns reverse recovery time in an ultra-small SOT523 package. It delivers low forward voltage drop (380 mV at 1.0 mA), fast switching performance, and integrated PN junction guard ring for ESD and transient protection - commonly used in high-frequency DC-DC converter freewheeling paths and portable device power rail clamping.
For engineers reviewing the BAS40-05T-7-F datasheet, BAS40-05T-7-F pinout, BAS40-05T-7-F application, or BAS40-05T-7-F equivalent, key selection criteria include its 40 V VRRM rating, sub-1 V VF at 40 mA, 5 pF capacitance at 0 V, 833 °C/W thermal resistance, and SOT523 footprint compatibility with space-constrained PCB layouts.
Technical Context
This Schottky diode employs a planar epitaxial construction 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 standardized 10 mA switching conditions.
The device operates across –55 °C to +125 °C and dissipates up to 150 mW on FR-4 board with recommended pad layout. Its 28 V RMS reverse voltage rating and 200 nA leakage at 30 V support stable operation in low-power signal routing and bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking capability without avalanche conduction |
| IFM | 200 mA - Continuous forward current limit defining safe DC conduction capacity |
| VF @ 1.0 mA | 380 mV - Low forward drop enabling minimal power loss in low-current bias circuits |
| trr | 5.0 ns - Fast recovery time supporting >100 MHz switching in snubberless flyback or OR-ing applications |
| CT @ 0 V | 5.0 pF - Low junction capacitance preserving signal integrity in RF detector or sampling circuits |
| RθJA | 833 °C/W - Thermal resistance indicating need for careful layout in sustained 100+ mW dissipation scenarios |
| IR @ 30 V | 200 nA - Ultra-low leakage ensuring minimal standby current in battery-powered systems |
Pinout & Package
Package: SOT523 - ultra-compact 3-pin surface-mount plastic package (1.60 mm × 1.60 mm × 0.75 mm), lead-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node in rectification or clamping configuration |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Typically tied to ground or lower-voltage rail; marked side of package |
| No Connection (Pin 3) | Internal die attach paddle (non-functional) | Electrically isolated; serves mechanical anchoring only - must not be biased |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 380 mV at 1.0 mA enables <1% voltage loss in precision reference clamp circuits |
| Fast switching speed | 5.0 ns reverse recovery supports clean edge transitions in 50–200 MHz clock distribution networks |
| PN junction guard ring | Enhances ESD robustness to >8 kV HBM and improves surge immunity in automotive load-dump environments |
| Ultra-small SOT523 footprint | 1.6 mm × 1.6 mm area reduces PCB real estate by 60% vs. SOT23 in wearable sensor modules |
Applications
| USB Power Switching | RF Signal Detection |
|---|---|
Use Scenario: Bidirectional USB port power path control with reverse-current blocking during adapter hot-swap. IC Role / Device Role / Timing Role: Schottky OR-ing diode preventing backfeed from VBUS to upstream supply while minimizing insertion loss. Use Value: 380 mV VF at 1 mA ensures <5 mV offset error in 5 V USB voltage monitoring circuits. | Use Scenario: Envelope detection in 900 MHz ISM-band receiver front-ends. IC Role / Device Role / Timing Role: Zero-bias RF detector diode converting RF amplitude to baseband DC voltage. Use Value: 5.0 pF CT and 5 ns trr preserve signal fidelity up to 1 GHz with <0.2 dB insertion loss. |
| Portable Device Battery Protection | High-Frequency DC-DC Converter Freewheeling |
Use Scenario: Reverse-polarity and overvoltage clamp in Li-ion battery charging circuitry. IC Role / Device Role / Timing Role: Low-leakage (200 nA) clamping diode shunting transients above 40 V before protection IC triggers. Use Value: Guard ring structure sustains >10,000 cycles of 30 V/100 ns surge without parameter shift. | Use Scenario: Synchronous rectifier freewheeling path in 2 MHz buck converter for wearables. IC Role / Device Role / Timing Role: Fast-recovery flyback diode replacing MOSFET gate drive complexity in low-cost designs. Use Value: 5 ns trr limits switching loss to <8% of total cycle energy at 2 MHz, improving efficiency by 1.2%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB521S-40T2R | Same 40 V VRRM, but 300 mA IFM and 150 mW PD; slightly higher VF (450 mV @ 1 mA) | Better suited for higher-current 3.3 V rail clamping where 100 mW margin is critical | Select when continuous forward current exceeds 180 mA or thermal budget allows 0.07 V higher drop |
| NSR0240HT1G | Identical 40 V VRRM and 200 mA IFM, but SOD-923 package (smaller); VF = 410 mV @ 1 mA | Preferred for <1.0 mm² footprint constraints where SOT523 is too large | Choose when board area is limited to ≤1.0 mm × 1.0 mm and 30 mV VF penalty is acceptable |
Compared with RB521S-40T2R and NSR0240HT1G, BAS40-05T-7-F offers the lowest VF (380 mV) in SOT523, making it optimal for ultra-low-power bias networks where every millivolt affects reference accuracy or battery runtime.
Availability
BAS40-05T-7-F is available at Aetrix Electronics and suitable for USB power management, RF envelope detection, portable battery protection, and high-frequency DC-DC converter freewheeling requiring stable component supply and consistent parametric performance across production lots.
Supply support for BAS40-05T-7-F 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 BAS40 series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for space-constrained, low-loss power management and signal conditioning in portable, wireless, and automotive electronics.
FAQ
What is the polarity marking for BAS40-05T-7-F?
The cathode is marked by a band on the SOT523 package body adjacent to Pin 2. Pin 1 is the anode, Pin 2 is the cathode, and Pin 3 is internally unconnected. The top-view pinout matches standard SOT523 orientation with the marking band left-aligned when the flat side faces upward.
Is BAS40-05T-7-F qualified for automotive applications?
No - BAS40-05T-7-F is not AEC-Q101 qualified. Diodes offers the automotive-grade BAS40-05TQ-7-F variant (with Q suffix) for AEC-Q101-compliant designs; this standard version is intended for commercial and industrial use only.
Can BAS40-05T-7-F replace BAS40-04T-7-F or BAS40-06T-7-F?
Yes - all three share identical SOT523 packaging, thermal specs, and electrical characteristics except VRRM: BAS40-04T is 40 V, BAS40-05T is 40 V, and BAS40-06T is 60 V. BAS40-05T-7-F is functionally interchangeable with BAS40-04T-7-F but not with BAS40-06T-7-F in 60 V designs.
What is the maximum junction temperature during pulsed operation?
The absolute maximum junction temperature is +125 °C. Under pulsed conditions (tp < 300 µs, duty cycle ≤ 2%), junction temperature rise is governed by RθJA and instantaneous power; sustained operation above 100 °C requires derating per Figure 4's power derating curve.
BAS40-05T-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 200mA (DC)
- 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
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
BAS40-05T-7-F FAQ
1.How can I place an order for BAS40-05T-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40-05T-7-F 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 BAS40-05T-7-F reliable?
The price and inventory of BAS40-05T-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40-05T-7-F is usually 5 days.
3.What payment methods are accepted for BAS40-05T-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40-05T-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40-05T-7-F?
BAS40-05T-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40-05T-7-F 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 BAS40-05T-7-F?
For technical support, including BAS40-05T-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40-05T-7-F requirements.
6.How does Aetrix verify that BAS40-05T-7-F is sourced from the original manufacturer or authorized distributors?
All BAS40-05T-7-F 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 BAS40-05T-7-F meets industry standards.
7.What is the process for return or replacement of BAS40-05T-7-F?
All BAS40-05T-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BAS40-05T-7-F, 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 BAS40-05T-7-F part is unused and in its original packaging.
Return procedure for BAS40-05T-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS40-05T-7-F Tags
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BAV99-7-F
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