My Inquiry
My Account
Diodes Incorporated APD240VD-E1
- Part No.:
- APD240VD-E1
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
APD240VD-E1.pdf
- Description:
- DIODE SCHOTTKY 40V 2A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:2,816
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
APD240VD-E1 from Diodes Incorporated is a dual Schottky barrier rectifier optimized for high-frequency switch-mode power supplies and DC-DC converters. It delivers 2 A average forward current at 40 V repetitive peak reverse voltage, with maximum forward voltage of 0.5 V at 2 A and reverse leakage of 0.5 mA at 25°C - enabling low-loss, low-noise operation in medium-voltage, high-efficiency power conversion stages.
For engineers reviewing the APD240VD-E1 datasheet, APD240VD-E1 pinout, APD240VD-E1 application, or APD240VD-E1 equivalent, key selection criteria include its 0.5 V VF at 2 A, 50 A non-repetitive surge rating, +125°C junction temperature capability, DO-15 package configuration, and RoHS-compliant lead-free finish - all critical for compact, thermally constrained power designs.
Technical Context
The APD240VD-E1 integrates two independent Schottky diodes in a single DO-15 package, sharing a common cathode configuration as confirmed by top-view marking and mechanical drawings. Its low forward voltage and fast switching response stem from platinum-silicide or similar Schottky metallization, minimizing conduction loss and recovery time in high-frequency (>100 kHz) topologies.
This device operates across –65°C to +125°C junction temperature range with thermal resistance RθJA of 52°C/W (DO-15), requiring minimal heatsinking in moderate-power applications. Guard-ring structure enhances ruggedness against transient overvoltage and mechanical stress, supporting reliable free-wheeling and polarity protection functions without external snubbers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in buck/boost/flyback clamp circuits. |
| IF(AV) | 2.0 A - Average rectified forward current per diode; supports continuous 2 A output in DC-DC converter outputs or freewheel paths. |
| VF (MAX) | 0.5 V @ 2 A, 25°C - Low conduction loss enables >92% efficiency in 3.3–12 V output stages at typical load currents. |
| IR (MAX) | 0.5 mA @ 40 V, 25°C - Minimal leakage preserves standby power budget in always-on systems and battery-backed circuits. |
| IFSM | 50 A @ 8.3 ms - Withstands inrush and transient surges during startup or fault conditions without degradation. |
| TJ Range | –65°C to +125°C - Enables deployment in industrial ambient environments and under PCB self-heating in enclosed enclosures. |
| RθJA | 52°C/W (DO-15) - Determines required copper area and airflow for thermal management; 10°C rise at 2 A conduction. |
Pinout & Package
APD240VD-E1 is packaged in DO-15 - a through-hole axial leaded plastic case with cathode identified by a band marking. The device contains two Schottky diodes sharing a common cathode terminal, with anode terminals isolated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Banded End) | Common Cathode Node | Single output node for dual-diode configuration; connects to positive rail in freewheeling or OR-ing applications. |
| Anode 1 (Lead 1) | First Diode Anode | Input terminal for first rectifier path; used in dual-output or redundant supply configurations. |
| Anode 2 (Lead 2) | Second Diode Anode | Independent input terminal for second rectifier path; enables independent control or sensing per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Low Forward Voltage | 0.5 V @ 2 A ensures <1 W conduction loss per diode at full load - critical for thermal budget in sealed power modules. |
| Guard-Ring Protection | Integrated edge termination improves avalanche ruggedness and prevents premature breakdown under voltage transients. |
| +125°C Junction Rating | Supports operation in high-ambient environments (e.g., automotive under-hood, industrial motor drives) without derating. |
| Pb-Free & Green Compliance | RoHS 3 compliant, halogen- and antimony-free molding compound meets IEC 61249-2-21 and JEDEC J-STD-020 Level 1. |
Applications
| DC-DC Converter Output Rectification | High-Frequency Inverter Freewheeling |
|---|---|
Use Scenario: Used in secondary-side synchronous rectification replacement or auxiliary output stage of isolated flyback or forward converters delivering 3.3–12 V at up to 2 A. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-VF, zero-recovery conduction path for output current return and energy recycling. Use Value: Reduces conduction loss by ~40% vs. standard PN diodes, improving full-load efficiency by 1.2–1.8% and lowering thermal stress on PCB layout. |
Use Scenario: Mounted across inductive loads (e.g., solenoids, relay coils, motor windings) in 20–500 kHz inverters for industrial automation. IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive kickback during MOSFET turn-off, limiting voltage overshoot to ≤40 V. Use Value: Fast recovery and low IR minimize tail current and leakage-induced heating during high-duty-cycle switching cycles. |
| Polarity Protection Circuit | Redundant Power OR-ing |
Use Scenario: Placed in series with input power rail to block reverse connection in 5–24 V embedded systems (e.g., IoT gateways, PLC I/O modules). IC Role / Device Role / Timing Role: Forward-conducting protection diode preventing damage when external adapter is plugged in backward. Use Value: 0.5 V drop adds negligible overhead vs. MOSFET-based solutions while eliminating gate drive complexity and BOM cost. |
Use Scenario: Dual-anode configuration enables OR-ing of two independent 12 V inputs (e.g., primary + backup battery) into single system rail. IC Role / Device Role / Timing Role: Common-cathode dual diode performing passive power source selection without control logic or sense resistors. Use Value: Eliminates need for ideal diode controllers; provides seamless switchover with <100 ns dead time and no cross-conduction risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB240-E3/54 (Vishay) | Same DO-15 package, 40 V VRRM, but VF = 0.52 V @ 2 A and IR = 0.8 mA @ 25°C. | Slightly higher leakage limits use in ultra-low-power standby circuits; otherwise functionally interchangeable. | Select when legacy Vishay sourcing is preferred; verify IR impact on battery drain in always-on designs. |
| SS24 (ON Semiconductor) | DO-214AC package, 40 V VRRM, VF = 0.5 V @ 2 A, but IF(AV) = 2 A per diode and RθJA = 90°C/W. | Surface-mount form factor enables denser layouts but requires thermal pad design for same power dissipation. | Choose for SMT production lines; add 20 mm² copper pour to meet thermal target at 2 A continuous. |
Compared with SB240-E3/54 and SS24, APD240VD-E1 offers lower IR for reduced standby loss and superior thermal performance in through-hole mounting - making it optimal for cost-sensitive, thermally constrained, or mixed-technology power boards.
Availability
APD240VD-E1 is available at Aetrix Electronics and suitable for DC-DC converters, high-frequency inverters, and polarity protection circuits requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for APD240VD-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, manufacturing, and sales operations across Asia, Europe, and North America.
The APD240 belongs to Diodes' Schottky Rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in consumer, industrial, and computing applications where low VF and ruggedness are essential.
FAQ
What is the cathode configuration of APD240VD-E1?
The APD240VD-E1 features a common-cathode dual-diode configuration: both diodes share one cathode terminal (marked with a band), while each has an independent anode lead. This allows parallel output rectification or independent input routing in OR-ing and freewheeling topologies, as confirmed in the DO-15 top-view diagram and pin assignment section of DS36971 Rev. 4-2.
Is APD240VD-E1 suitable for surface-mount assembly?
No - APD240VD-E1 uses the DO-15 axial-lead through-hole package, not a surface-mount variant. For SMT implementation, consider the APD240VRTR-G1 (DO-214AC) or APD240KDTR-G1 (SOD-123) versions, which share identical electrical specs but differ in thermal resistance and mounting method.
Does APD240VD-E1 require a heatsink at 2 A continuous current?
At 2 A and 0.5 V VF, power dissipation is 1.0 W. With RθJA = 52°C/W, junction-to-ambient rise is ~52°C above ambient. In still air at 25°C ambient, TJ ≈ 77°C - within the +125°C limit. A heatsink is not required unless ambient exceeds 70°C or airflow is restricted; minimum 100 mm² copper pour recommended for reliability.
How does the guard-ring structure improve reliability?
The guard-ring is a diffused or implanted region surrounding the active Schottky junction that redistributes electric field at the silicon edge, suppressing premature avalanche breakdown during voltage transients. As documented in DS36971, this increases ruggedness against repetitive surges and ESD events - extending lifetime in inductive switching and hot-plug applications.
APD240VD-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):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 2 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
APD240VD-E1 FAQ
1.How can I place an order for APD240VD-E1 through Aetrix?
Please submit a Request for Quotation (RFQ) for APD240VD-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 APD240VD-E1 reliable?
The price and inventory of APD240VD-E1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APD240VD-E1 is usually 5 days.
3.What payment methods are accepted for APD240VD-E1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APD240VD-E1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APD240VD-E1?
APD240VD-E1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APD240VD-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 APD240VD-E1?
For technical support, including APD240VD-E1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APD240VD-E1 requirements.
6.How does Aetrix verify that APD240VD-E1 is sourced from the original manufacturer or authorized distributors?
All APD240VD-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 APD240VD-E1 meets industry standards.
7.What is the process for return or replacement of APD240VD-E1?
All APD240VD-E1 units undergo pre-shipment inspection (PSI). If there is an issue with APD240VD-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 APD240VD-E1 part is unused and in its original packaging.
Return procedure for APD240VD-E1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
APD240VD-E1 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
