My Inquiry
My Account
Nexperia USA Inc. PMEG40T20ERX
- Part No.:
- PMEG40T20ERX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
PMEG40T20ERX.pdf
- Description:
- DIODE SCHOTTKY 40V 2A SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:3,194
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PMEG40T20ERX from Nexperia is a 40 V, 2 A Trench MEGA Schottky barrier rectifier in CFP3 (SOD123W) package, designed for low-voltage, high-efficiency DC-to-DC conversion and freewheeling paths. It delivers 450 mV typical forward voltage at 2 A and 25 °C, exhibits ≤22 µA reverse leakage at 40 V, and supports 20 A non-repetitive peak forward current-enabling compact, thermally efficient power stage designs in space-constrained consumer and industrial SMPS.
For engineers reviewing the PMEG40T20ERX datasheet, PMEG40T20ERX pinout, PMEG40T20ERX application, or PMEG40T20ERX equivalent, key selection criteria include its low VF performance across -40 °C to 125 °C junction temperature range, clip-bonded thermal architecture enabling 1.15 W power dissipation on 1 cm² cathode pad, and compatibility with both reflow and wave soldering processes.
Technical Context
This Schottky rectifier employs Trench MEGA technology to suppress reverse leakage while maintaining ultra-low forward voltage-achieving 310 mV VF at 0.1 A and 25 °C, rising only to 505 mV at -40 °C under 2 A pulsed conditions. Its step-recovery trr of 11.5 ns and ramp-recovery trr of 11 ns confirm minimal switching loss during high-frequency operation.
The device uses clip-bonding instead of wire bonding, directly attaching the die to the cathode lead frame to reduce thermal resistance to 18 K/W (junction-to-solder-point) and support sustained 2 A average forward current up to 100 °C ambient when mounted on a 1 cm² copper pad-critical for thermally dense buck converter outputs and OR-ing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Maximum blocking capability without breakdown; suitable for 24 V system rail protection and 36 V input SMPS stages. |
| Average Forward Current (IF(AV)) | 2 A - Sustained DC or square-wave current handling at 160 °C solder point temperature; enables continuous operation in 5–12 V output converters. |
| Forward Voltage (VF) | 450 mV typ. @ 2 A, 25 °C - Reduces conduction loss by >30% vs. standard Schottkys; improves efficiency in high-current, low-VF applications like USB PD adapters. |
| Reverse Leakage (IR) | 6 µA typ. @ 40 V, 25 °C - Low leakage preserves battery life in reverse polarity protection and always-on standby circuits. |
| Thermal Resistance (Rth(j-sp)) | 18 K/W - Junction-to-solder-point value confirms effective heat transfer via cathode tab; allows 1.15 W dissipation with <10 °C rise above PCB pad. |
| Reverse Recovery Time (trr) | 11.5 ns (step) / 11 ns (ramp) - Enables stable operation up to ~10 MHz switching frequencies without excessive ringing or EMI in synchronous rectifier replacements. |
| Diode Capacitance (Cd) | 145 pF @ 10 V - Low capacitance minimizes capacitive turn-on loss and improves transient response in high-speed flyback snubbers. |
Pinout & Package
Encapsulated in a CFP3 (SOD123W) surface-mount plastic package measuring 2.6 mm × 1.7 mm × 1.0 mm, the PMEG40T20ERX features a flat lead profile optimized for automated placement and thermal pad soldering. The package includes an exposed cathode tab for direct thermal coupling to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Main current exit terminal; electrically and thermally connected to exposed metal tab-must be soldered to ≥1 cm² copper area for rated power handling. |
| 2 (A) | Anode | Current entry terminal; smaller pad footprint; no thermal function-designed for signal-level routing and minimal trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Trench MEGA Schottky technology | Enables simultaneous low VF (450 mV) and low IR (6 µA), eliminating trade-off between conduction loss and leakage-driven standby loss. |
| Clip-bonded construction | Reduces Rth(j-sp) to 18 K/W-supports 2 A continuous current with <20 °C junction rise over ambient when using 1 cm² cathode pad. |
| CFP3 (SOD123W) package | 0.75 mm max height and 1.7 mm width enable placement beneath low-profile heatsinks or in tight board-to-board spacing without mechanical interference. |
| Reflow- and wave-solder compatible | Qualified per J-STD-020 and JEDEC J-STD-006-eliminates need for process-specific requalification when migrating between assembly lines. |
Applications
| DC-DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
|
Use Scenario: Primary synchronous rectifier replacement in 5 V/3 A buck converter for portable SSDs. IC Role / Device Role / Timing Role: Freewheeling diode conducting during high-side FET off-time; handles 2 A average current with <100 mW conduction loss. Use Value: 450 mV VF reduces conduction loss by 0.2 W vs. legacy 600 mV Schottky-extending battery runtime by 4.2% at full load. |
Use Scenario: Input protection circuit for 12 V automotive accessory module powered via barrel jack. IC Role / Device Role / Timing Role: Series-blocking diode preventing damage during accidental reverse connection; conducts only during correct polarity. Use Value: 6 µA max IR at 12 V ensures <0.1 µW standby loss-preserving microamp-level sleep current in always-on CAN nodes. |
| Freewheeling Diode in Motor Drivers | Low-Power Consumption Standby Supply |
|
Use Scenario: Flyback path for brushed DC motor H-bridge driving 24 V, 1.5 A loads in HVAC actuators. IC Role / Device Role / Timing Role: Clamps inductive kickback during PWM off-cycles; sustains 2 A peak current with 11.5 ns trr to limit voltage overshoot. Use Value: 11 ns trr limits VOS to <32 V under 20 A/µs dI/dt-avoiding MOSFET avalanche stress and reducing snubber component count. |
Use Scenario: Auxiliary 3.3 V supply derived from main 5 V rail in IoT sensor node with 10-year battery life target. IC Role / Device Role / Timing Role: Low-leakage series diode isolating backup LDO from main rail during deep sleep mode. Use Value: 3 µA typ. IR at 3.3 V contributes <10 nW quiescent loss-reducing total sleep current by 0.015 µA versus standard Schottky alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VSKY240A-E3/54 | 40 V VR, 2 A IF(AV), VF = 490 mV @ 2 A - 40 mV higher VF; SOD123 package (no clip bond). | Higher thermal resistance (Rth(j-a) = 250 K/W vs. 130 K/W) limits usable current to 1.3 A at 70 °C ambient. | Select when cost sensitivity outweighs thermal performance; avoid in >1 A continuous or >85 °C ambient designs. |
| ON Semiconductor NSR20F40NXT5G | 40 V VR, 2 A IF(AV), VF = 430 mV @ 2 A - 20 mV lower VF; same CFP3 package but no published Rth(j-sp) data. | No documented clip-bonding; thermal performance unverified beyond Rth(j-a) = 220 K/W - may require derating in high-power density layouts. | Select for marginally better VF where thermal validation is not required; verify junction temperature rise in final layout before volume use. |
Compared with VSKY240A-E3/54 and NSR20F40NXT5G, the PMEG40T20ERX uniquely combines verified 18 K/W junction-to-solder-point thermal resistance with 450 mV VF and 6 µA IR-making it the only option qualified for 2 A continuous operation on standard FR4 with 1 cm² cathode pad without forced airflow or heatsinking.
Availability
PMEG40T20ERX is available at Aetrix Electronics and suitable for DC-DC converter output rectification, reverse polarity protection, freewheeling diode applications, and low-power consumption standby supplies requiring stable component supply and long-term manufacturability.
Supply support for PMEG40T20ERX 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness for high-volume industrial and consumer applications.
The PMEG40T20ERX belongs to Nexperia's Trench MEGA Schottky rectifier product line-engineered specifically for high-efficiency, low-thermal-footprint power conversion in space- and energy-constrained systems such as USB-C PD adapters, smart home hubs, and battery-powered sensors.
FAQ
Is PMEG40T20ERX automotive-qualified?
No. Per Nexperia's revision history (v.3, April 2023), this part is explicitly designated as non-automotive qualified. It has not undergone AEC-Q101 stress testing or automotive-grade qualification. For automotive applications, Nexperia offers the PMEG40T20ERQ variant-identical electrical specs but with full AEC-Q101 certification and extended temperature screening.
What is the maximum allowable solder point temperature during reflow?
The datasheet specifies a maximum solder point temperature (Tsp) of 160 °C for 2 A average forward current operation. During reflow, peak profile temperature must not exceed 260 °C for ≤30 seconds (per J-STD-020), with the solder point itself monitored separately-exceeding 160 °C continuously degrades long-term reliability and reduces IF(AV) derating margin.
Can PMEG40T20ERX replace a standard SOD123 Schottky in existing layouts?
Yes, but only if the PCB footprint matches the CFP3 (SOD123W) outline: 2.6 mm × 1.7 mm body with 0.6 mm lead pitch and 1.1 mm pad width. Standard SOD123 footprints (2.3 mm × 1.3 mm) are too small-mechanical interference and insufficient cathode pad area will cause thermal failure. Use the footprint in Figure 16 (sod123w_fr) for reflow compatibility.
How does the 20 A IFSM rating translate to real-world surge handling?
The 20 A non-repetitive peak forward current (IFSM) applies to 8 ms half-sine pulses at 25 °C initial junction temperature. In practice, this supports inrush limiting for 12 V/1000 µF input stages (peak I ≈ 18 A) and motor stall events lasting <5 ms. Exceeding 8 ms or operating above 25 °C requires derating per Figure 10's IF(AV) vs. Tsp curves.
PMEG40T20ERX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 11.5 ns
- Current - Reverse Leakage @ Vr:
- 22 µA @ 40 V
- Capacitance @ Vr, F:
- 350pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- 175°C (Max)
PMEG40T20ERX FAQ
1.How can I place an order for PMEG40T20ERX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG40T20ERX 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 PMEG40T20ERX reliable?
The price and inventory of PMEG40T20ERX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG40T20ERX is usually 5 days.
3.What payment methods are accepted for PMEG40T20ERX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG40T20ERX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG40T20ERX?
PMEG40T20ERX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG40T20ERX 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 PMEG40T20ERX?
For technical support, including PMEG40T20ERX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG40T20ERX requirements.
6.How does Aetrix verify that PMEG40T20ERX is sourced from the original manufacturer or authorized distributors?
All PMEG40T20ERX 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 PMEG40T20ERX meets industry standards.
7.What is the process for return or replacement of PMEG40T20ERX?
All PMEG40T20ERX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG40T20ERX, 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 PMEG40T20ERX part is unused and in its original packaging.
Return procedure for PMEG40T20ERX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PMEG40T20ERX 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 SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
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…
