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Diodes Incorporated APD140VD-E1
- Part No.:
- APD140VD-E1
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
APD140VD-E1.pdf
- Description:
- DIODE SCHOTTKY 40V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:2,853
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Product details
Overview
APD140VD-E1 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-E1 datasheet, APD140VD-E1 pinout, APD140VD-E1 application, or APD140VD-E1 equivalent, key selection criteria include low VF for efficiency in compact power supplies, DO-41 package compatibility with through-hole assembly, surge robustness (35 A IFSM), and RoHS-compliant lead-free finish.
Technical Context
The APD140VD-E1 integrates two independent Schottky diodes in a single DO-41 package, enabling dual-path rectification or polarity protection without discrete pairing. Its low 0.5 V forward voltage minimizes conduction loss in 3.3–12 V output stages, while the guard-ring structure enhances ruggedness against transient stress.
Designed for operation up to +125°C junction temperature, it supports high-density thermal layouts with 65°C/W junction-to-ambient thermal resistance (DO-41). The 10,000 V/μs dv/dt rating ensures stable switching in fast-edge SMPS topologies without parasitic turn-on.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Supports input rails up to 36 V DC in industrial DC-DC converters |
| IF(AV) | 1.0 A - Rated continuous output current per diode leg at TA = +25°C |
| VF (max) | 0.5 V @ 1 A - Reduces power loss to ≤0.5 W per diode under full load |
| IR (max) | 0.5 mA @ 25°C - Limits standby leakage in battery-backed or energy-harvesting circuits |
| IFSM | 35 A @ 8.3 ms - Withstands typical inrush surges in offline adapters and motor drives |
| TJ Range | −65°C to +125°C - Enables deployment in automotive under-hood and industrial ambient environments |
Pinout & Package
APD140VD-E1 uses the DO-41 axial-leaded package with cathode marked by a band on the body. It contains two isolated Schottky diodes sharing no internal connection; terminals are arranged as Anode–Cathode–Anode–Cathode along the leads, but only two leads are externally accessible - one anode and one cathode per diode - requiring external wiring to access both diodes independently.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input terminal for Diode 1 | Accepts positive potential; connects to switch node or input rail in half-wave rectification |
| Cathode (Lead 2) | Output terminal for Diode 1 | Delivers rectified output; ties to filter capacitor or load return path |
| Anode (Lead 3) | Input terminal for Diode 2 | Independent anode - enables dual-channel freewheeling or back-to-back polarity protection |
| Cathode (Lead 4) | Output terminal for Diode 2 | Independent cathode - allows separate routing for redundancy or differential sensing |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.5 V max at 1 A - cuts conduction loss by ~30% vs. standard silicon rectifiers in 5 V output rails |
| Guard-ring protected junction | Enhanced edge termination - improves reliability under repetitive voltage transients in flyback snubbers |
| +125°C operating junction | Rated thermal limit - permits use in sealed enclosures without forced airflow |
| RoHS-compliant matte tin finish | Lead-free, halogen-free plating - satisfies IPC-J-STD-020 solderability requirements for leaded assembly |
Applications
| Low Voltage High Frequency Inverters | DC-DC Converters |
|---|---|
Use Scenario: 24 V input to 5 V/1 A isolated output in solar micro-inverters. IC Role / Device Role / Timing Role: Dual Schottky rectifier for synchronous secondary-side rectification. Use Value: 0.5 V VF reduces secondary-side loss by 0.5 W per diode, improving full-load efficiency to >92%. | Use Scenario: 12 V input buck converter powering FPGA core logic at 1.2 V/3 A. IC Role / Device Role / Timing Role: Freewheeling diode in non-synchronous buck stage. Use Value: 35 A IFSM withstands MOSFET shoot-through events; DO-41 fits legacy through-hole PCB footprints. |
| Free Wheeling | Polarity Protection |
Use Scenario: Brushed DC motor driver with 24 V supply and 2 A stall current. IC Role / Device Role / Timing Role: Flyback path for inductive kickback during PWM off-time. Use Value: 65°C/W θJA allows direct mounting on copper pour; 0.5 V drop limits clamp energy dissipation. | Use Scenario: USB-C powered peripheral with reversible connector and 5 V bus. IC Role / Device Role / Timing Role: Back-to-back Schottky pair preventing reverse current flow. Use Value: Dual-diode configuration enables bidirectional blocking with <1 V total drop in either direction. |
Availability
APD140VD-E1 is available at Aetrix Electronics and suitable for low-voltage high-frequency inverters, DC-DC converters, freewheeling circuits, and polarity protection applications requiring stable component supply and legacy DO-41 through-hole compatibility.
Supply support for APD140VD-E1 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 belongs to Diodes' Schottky rectifier product line, engineered specifically for efficiency-critical, high-switching-frequency power conversion where low VF and fast recovery are mandatory.
FAQ
Is APD140VD-E1 still in active production?
No - APD140VD-E1 is officially obsolete per Diodes Incorporated's DS36974 Rev. 4 (April 2018). The datasheet states "PART OBSOLETE – NO ALTERNATE PART". Aetrix Electronics holds remaining legacy stock for last-time buy and repair fulfillment, with no future manufacturing scheduled.
What is the difference between APD140VD-E1 and APD140VRTR-G1?
APD140VD-E1 uses the DO-41 axial package in bulk packaging with RoHS-compliant matte tin finish; APD140VRTR-G1 uses the surface-mount DO-214AC package in tape-and-reel format with halogen-free "Green" molding compound. Both share identical electrical specs but differ in mechanical form factor and assembly method.
Can APD140VD-E1 replace a 1N5819 in existing designs?
Yes - APD140VD-E1 matches or exceeds 1N5819 specifications: both rated for 40 V VRRM and 1 A IF(AV), but APD140VD-E1 offers lower VF (0.5 V vs. 0.6 V typical) and higher IFSM (35 A vs. 25 A), making it a performance upgrade in thermally constrained layouts.
Does APD140VD-E1 support reflow soldering?
No - APD140VD-E1 is a DO-41 axial-leaded device intended for wave or hand soldering. Its plastic body and lead geometry are not qualified for reflow profiles; peak temperature exposure above 260°C risks delamination or marking degradation per J-STD-020 moisture sensitivity Level 1 rating.
APD140VD-E1 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-E1 FAQ
1.How can I place an order for APD140VD-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for APD140VD-E1 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-E1 reliable?
The price and inventory of APD140VD-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APD140VD-E1 is usually 5 days.
3.What payment methods are accepted for APD140VD-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APD140VD-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APD140VD-E1?
APD140VD-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APD140VD-E1 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-E1?
For technical support, including APD140VD-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APD140VD-E1 requirements.
6.How does Aetrix verify that APD140VD-E1 is sourced from the original manufacturer or authorized distributors?
All APD140VD-E1 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-E1 meets industry standards.
7.What is the process for return or replacement of APD140VD-E1?
All APD140VD-E1 units undergo pre-shipment inspection (PSI). If there is an issue with APD140VD-E1, 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-E1 part is unused and in its original packaging.
Return procedure for APD140VD-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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