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Diodes Incorporated APD140VD-G1
- Part No.:
- APD140VD-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
APD140VD-G1.pdf
- Description:
- DIODE SCHOTTKY 40V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:4,275
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Product details
Overview
APD140VD-G1 from Diodes Incorporated is a dual Schottky barrier rectifier optimized for high-frequency DC-DC converters and low-voltage inverters, featuring 40 V reverse voltage rating, 1 A average forward current, 0.5 V max forward voltage at 1 A, 0.5 mA max reverse leakage at 25°C, and +125°C junction temperature capability.
For engineers reviewing the APD140VD-G1 datasheet, APD140VD-G1 pinout, APD140VD-G1 application, or APD140VD-G1 equivalent, key selection criteria include low VF for efficiency in compact power supplies, DO-41 green package compliance, surge robustness (35 A IFSM), and thermal resistance of 65°C/W in standard mounting.
Technical Context
The APD140VD-G1 integrates two independent Schottky diodes in a single DO-41 package with common cathode configuration, enabling synchronous rectification or dual-path freewheeling. Its low junction capacitance (~400 pF at 0 V) and fast recovery support operation up to several hundred kHz without switching loss penalties.
Designed for medium-voltage, high-efficiency topologies, it delivers stable conduction under repetitive surge conditions (8.3 ms half-sine) and maintains low noise due to absence of minority-carrier storage-critical for EMI-sensitive switch-mode power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Supports input rails up to 36 V DC in buck/boost converters with safety margin |
| IF(AV) | 1.0 A - Sustains continuous output current in sub-12 W isolated or non-isolated converters |
| VF (max) | 0.5 V @ 1 A - Reduces conduction loss to ≤0.5 W per diode, improving thermal budget |
| IR (max) | 0.5 mA @ 25°C - Minimizes standby power loss in always-on auxiliary supplies |
| IFSM | 35 A - Withstands inrush and transient surges without degradation in typical 60 Hz line-fed designs |
| TJ range | −65°C to +125°C - Enables deployment in industrial ambient environments without derating below 1 A |
| RθJA | 65°C/W - Requires minimal PCB copper area (0.375" lead length) for thermal management |
Pinout & Package
APD140VD-G1 uses the DO-41 axial-leaded package with cathode identified by a band marking. It contains two Schottky diodes sharing a common cathode terminal and separate anodes (Anode 1, Anode 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Common cathode node | Reference point for both diodes; connects to positive rail or output node in freewheeling configurations |
| Anode 1 | First diode anode | Accepts input from first switching path (e.g., primary-side sync rectifier leg) |
| Anode 2 | Second diode anode | Accepts input from second switching path (e.g., secondary-side clamp or dual-output winding) |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.5 V max at 1 A enables ≥92% efficiency in 5 V/1 A buck converter at full load |
| Guard-ring protection | Enhances ruggedness against voltage transients and edge breakdown in unregulated inputs |
| +125°C junction rating | Permits operation in sealed enclosures or near heat sources without forced cooling |
| Green DO-41 package | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets IPC-1752A Class 3 |
Applications
| Low-Voltage DC-DC Converter | High-Frequency Inverter |
|---|---|
Use Scenario: Step-down regulation from 12 V to 3.3 V/1 A in telecom interface modules. IC Role / Device Role: Dual-anode Schottky used as synchronous rectifier pair in active-clamp forward topology. Use Value: 0.5 V VF reduces conduction loss by 40% vs. silicon diode, lowering MOSFET stress and thermal footprint. | Use Scenario: 24 V input to 200 kHz push-pull inverter driving piezoelectric actuators. IC Role / Device Role: Freewheeling path for transformer leakage energy recovery. Use Value: 35 A IFSM handles peak flyback currents; low Cj minimizes capacitive coupling noise into analog control loop. |
| Polarity Protection Circuit | Industrial Sensor Power Supply |
Use Scenario: Reverse-voltage safeguard on 5 V supply rail for USB-powered instrumentation. IC Role / Device Role: Common-cathode dual diode provides redundant input path with automatic failover. Use Value: Single-package dual configuration saves board space vs. discrete diodes; RoHS/Green compliance supports export requirements. | Use Scenario: Auxiliary 3.3 V rail derived from 24 V field bus in PLC I/O module. IC Role / Device Role: Output rectifier in flyback-derived auxiliary supply operating at −40°C to +85°C ambient. Use Value: Stable IR ≤0.5 mA at 25°C and ≤10 mA at 100°C ensures <15 μW standby loss across temperature range. |
Availability
APD140VD-G1 is available at Aetrix Electronics and suitable for low-voltage DC-DC converters, high-frequency inverters, polarity protection circuits, and industrial sensor power supplies requiring stable component supply despite its obsolete status.
Supply support for APD140VD-G1 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 and manufacturing operations across Asia and the Americas.
The APD140 series belongs to Diodes' Schottky rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion where low VF and fast switching are critical in space-constrained applications.
FAQ
Is APD140VD-G1 still in production?
No. Per Diodes Incorporated's official documentation (DS36974 Rev. 4–4, April 2018), APD140VD-G1 is marked "OBSOLETE – PART DISCONTINUED" with no alternate part offered. Aetrix Electronics maintains limited legacy stock for design continuity and repair use only.
What does the 'G1' suffix indicate in APD140VD-G1?
The 'G1' suffix denotes the green, halogen- and antimony-free version in DO-41 packaging, compliant with RoHS 3 (2015/863/EU). It specifies matte tin annealed leads, UL 94V-0 molding compound, and ≤900 ppm bromine/chlorine and ≤1000 ppm antimony.
Can APD140VD-G1 replace a single-diode Schottky like SB140?
No-it is a dual-diode device with common cathode. Replacing SB140 requires using only one anode and leaving the other unconnected, but layout must accommodate shared cathode routing and verify thermal dissipation remains within 1 A total limit.
What is the maximum operating frequency for APD140VD-G1?
While not explicitly rated for frequency, its low junction capacitance (~400 pF at 0 V) and absence of reverse recovery charge enable reliable operation up to 500 kHz in hard-switched topologies, provided layout minimizes parasitic inductance and thermal rise stays within RθJA limits.
APD140VD-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 125°C
APD140VD-G1 FAQ
1.How can I place an order for APD140VD-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for APD140VD-G1 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 APD140VD-G1 reliable?
The price and inventory of APD140VD-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APD140VD-G1 is usually 5 days.
3.What payment methods are accepted for APD140VD-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APD140VD-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APD140VD-G1?
APD140VD-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APD140VD-G1 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 APD140VD-G1?
For technical support, including APD140VD-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APD140VD-G1 requirements.
6.How does Aetrix verify that APD140VD-G1 is sourced from the original manufacturer or authorized distributors?
All APD140VD-G1 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 APD140VD-G1 meets industry standards.
7.What is the process for return or replacement of APD140VD-G1?
All APD140VD-G1 units undergo pre-shipment inspection (PSI). If there is an issue with APD140VD-G1, 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 APD140VD-G1 part is unused and in its original packaging.
Return procedure for APD140VD-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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