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Nexperia USA Inc. PMEG45T20EXDX
- Part No.:
- PMEG45T20EXDX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
PMEG45T20EXDX.pdf
- Description:
- DIODE SCHOTTKY 45V 2A SOD323HP
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
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Product details
Overview
PMEG45T20EXDX from Nexperia is a 45 V, 2 A Trench MEGA Schottky barrier rectifier in CFP2-HP (SOD323HP) package, designed for high-efficiency DC-to-DC conversion and freewheeling roles in compact power supplies. It delivers VF = 500–560 mV at 2 A/25 °C, IR ≤ 25 µA at 45 V/25 °C, and features clip-bonding for enhanced thermal performance in space-constrained SMD layouts.
For engineers reviewing the PMEG45T20EXDX datasheet, PMEG45T20EXDX pinout, PMEG45T20EXDX application, or PMEG45T20EXDX equivalent, key selection criteria include low forward voltage for efficiency-critical switching nodes, low Qrr (2.5 nC) for reduced switching loss in high-frequency SMPS, and thermal resistance Rth(j-sp) = 6 K/W enabling reliable operation with minimal PCB copper area.
Technical Context
This Schottky rectifier uses trench-based MEGA architecture to achieve ultra-low VF and minimized reverse recovery charge. Its anode-cathode structure supports unidirectional conduction with negligible minority-carrier storage, eliminating tail current during turn-off.
The CFP2-HP package integrates an exposed cathode heatsink tab directly bonded via clip technology, delivering Rth(j-sp) = 6 K/W - significantly lower than standard SOD323 - and enabling stable operation up to Tj = 175 °C under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 45 V - Maximum blocking voltage before breakdown; defines usable input range in 36 V nominal systems. |
| IF(AV) (Avg Forward Current) | 2 A - Sustained DC current capability at Tsp ≤ 166 °C on standard FR4 PCB; supports continuous 24 W conduction loss budget. |
| VF (Forward Voltage) | 500–560 mV @ 2 A, 25 °C - Directly reduces conduction loss to ≤1.12 W per device; critical for >95% efficiency targets. |
| Qrr (Reverse Recovery Charge) | 2.5 nC - Enables clean turn-off in 500 kHz–1 MHz SMPS without snubbers; lowers EMI and gate drive stress. |
| IR (Reverse Current) | 4–25 µA @ 45 V, 25 °C - Ensures <110 µW leakage at full VR; preserves standby efficiency in battery-powered OR-ing. |
| Rth(j-sp) (Junction-to-Solder Point) | 6 K/W - Thermal path from die to cathode solder pad; allows direct thermal coupling to large copper pour for passive cooling. |
| trr (Reverse Recovery Time) | 5 ns (step recovery) - Confirms true Schottky behavior; eliminates minority-carrier delay in fast-switching topologies. |
Pinout & Package
Encapsulated in CFP2-HP (SOD323HP): 2.2 mm × 1.3 mm × 0.68 mm body with exposed cathode thermal pad; optimized for reflow soldering on FR4 with 1 cm² cathode mounting pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Main current return path and primary thermal interface; requires direct connection to large copper pour for heat extraction. |
| 2 | Anode (A) | Input-side terminal; carries forward current into load or inductor; no thermal function beyond electrical conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at high current | 500–560 mV @ 2 A ensures <1.12 W conduction loss - critical for thermally constrained DC/DC modules. |
| Ultra-low Qrr | 2.5 nC minimizes switching energy loss and di/dt-induced voltage spikes in synchronous rectifier replacement. |
| Clip-bonded thermal construction | Enables Rth(j-sp) = 6 K/W - 3.8× better than standard SOD323 - allowing 2 A operation without forced air. |
| Exposed cathode heatsink | Direct metal thermal path to PCB improves long-term reliability by limiting ΔTj across thermal cycles. |
| Low IR at elevated temperature | ≤9 mA @ 45 V/125 °C maintains reverse blocking integrity in automotive under-hood environments. |
Applications
| High-Efficiency DC/DC Converters | Switch-Mode Power Supplies |
|---|---|
|
Use Scenario: Secondary-side rectification in isolated 12 V → 3.3 V/5 V buck-derived converters operating at 1 MHz. IC Role / Device Role / Timing Role: Freewheeling diode replacing MOSFET synchronous rectifier where control complexity must be minimized. Use Value: 500 mV VF cuts conduction loss by 40% vs. standard Schottky, enabling >94% peak efficiency without gate driver overhead. |
Use Scenario: Input-stage OR-ing diode in dual-rail 24 V telecom power distribution units. IC Role / Device Role / Timing Role: Unidirectional current steering element preventing backfeed between redundant supplies. Use Value: 4 µA IR at 25 °C ensures <100 µW standby loss per rail, preserving system-level sleep-mode current budgets. |
| Freewheeling in Inductive Loads | Reverse Polarity Protection |
|
Use Scenario: Flyback path for brushed DC motor drivers in portable medical pumps (2 A peak, 20 kHz PWM). IC Role / Device Role / Timing Role: Passive flywheel path clamping inductive kickback during MOSFET off-time. Use Value: 5 ns trr prevents voltage overshoot exceeding 45 V rating, eliminating need for TVS clamp in Class II designs. |
Use Scenario: Input protection for 12 V IoT edge node powered via barrel jack with accidental polarity reversal. IC Role / Device Role / Timing Role: Series-blocking diode placed before LDO regulator input. Use Value: 2 A IF(AV) rating supports 1.5 A system load with 33% margin; 560 mV VF adds only 0.84 V dropout at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VSSAF2M45-M3/84A | Same 45 V VR, 2 A IF(AV), but VF = 550–620 mV @ 2 A; Rth(j-a) = 250 K/W (no clip bond). | Lacks exposed thermal pad; requires larger PCB copper area to match thermal performance. | Select when legacy footprint compatibility is required and thermal margin exists. |
| ON Semiconductor NSR20F40NXT5G | 40 V VR, 2 A IF(AV); VF = 450–510 mV @ 2 A; Qrr = 3.2 nC; SOD-123FL package. | Lower VR limits use to ≤36 V systems; higher Qrr increases switching loss above 600 kHz. | Prefer for cost-sensitive 24 V applications where 45 V margin is unnecessary. |
Compared with VSSAF2M45-M3/84A, PMEG45T20EXDX offers 6 K/W thermal resistance versus 250 K/W - enabling 2× higher power density - while matching VR and IF(AV). Against NSR20F40NXT5G, it trades 5 V VR headroom for 0.7 nC lower Qrr and superior thermal coupling, making it optimal for 48 V input SMPS.
Availability
PMEG45T20EXDX is available at Aetrix Electronics and suitable for high-efficiency DC-to-DC conversion, switch mode power supply design, and reverse polarity protection requiring stable component supply across industrial, telecom, and portable electronics programs.
Supply support for PMEG45T20EXDX 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 focused on high-volume, high-reliability discrete and logic devices, with leadership in Schottky rectifiers, MOSFETs, and ESD protection.
This device belongs to Nexperia's Trench MEGA Schottky series, engineered specifically for high-frequency, high-efficiency power conversion in space-constrained applications where thermal management and low conduction loss are decisive.
FAQ
What is the maximum junction temperature for continuous operation?
The absolute maximum junction temperature is 175 °C. Continuous operation at this limit requires maintaining solder point temperature ≤166 °C with δ = 0.5 duty cycle and 20 kHz square wave, verified using the derating curves in Figures 8–10 of the datasheet. Exceeding Tj = 175 °C causes irreversible degradation.
Can PMEG45T20EXDX replace a standard SOD-323 Schottky in existing layouts?
Yes - CFP2-HP (SOD323HP) shares identical footprint dimensions (2.2 mm × 1.3 mm) and pad layout with standard SOD323, but adds an exposed cathode thermal pad. The device fits mechanically without redesign, though optimal thermal performance requires connecting the cathode pad to ≥1 cm² copper area per Figure 19.
How does its Qrr compare to conventional Schottky diodes in 1 MHz SMPS?
At 2.5 nC, its Qrr is 30–50% lower than typical 45 V Schottkys (e.g., 4–6 nC). In a 1 MHz buck converter, this reduces switching loss by ~180 µW per cycle and suppresses dV/dt-induced ringing, enabling cleaner output voltage without added snubber components.
Is this device suitable for automotive applications?
No - PMEG45T20EXDX is not AEC-Q200 qualified. While it operates from −55 °C to +175 °C, it lacks automotive-specific testing (e.g., board-level thermal cycling, humidity bias HAST). For automotive use, select Nexperia's AQ-grade equivalents such as PMEG45T20EPX.
PMEG45T20EXDX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 560 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 9 ns
- Current - Reverse Leakage @ Vr:
- 25 µA @ 45 V
- Capacitance @ Vr, F:
- 160pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD323HP
- Operating Temperature - Junction:
- 175°C
PMEG45T20EXDX FAQ
1.How can I place an order for PMEG45T20EXDX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG45T20EXDX 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 PMEG45T20EXDX reliable?
The price and inventory of PMEG45T20EXDX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG45T20EXDX is usually 5 days.
3.What payment methods are accepted for PMEG45T20EXDX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG45T20EXDX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG45T20EXDX?
PMEG45T20EXDX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG45T20EXDX 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 PMEG45T20EXDX?
For technical support, including PMEG45T20EXDX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG45T20EXDX requirements.
6.How does Aetrix verify that PMEG45T20EXDX is sourced from the original manufacturer or authorized distributors?
All PMEG45T20EXDX 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 PMEG45T20EXDX meets industry standards.
7.What is the process for return or replacement of PMEG45T20EXDX?
All PMEG45T20EXDX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG45T20EXDX, 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 PMEG45T20EXDX part is unused and in its original packaging.
Return procedure for PMEG45T20EXDX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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