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Nexperia USA Inc. PMEG2020CERX
- Part No.:
- PMEG2020CERX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
PMEG2020CERX.pdf
- Description:
- PMEG2020CER/SOD123W/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
PMEG2020CERX from Nexperia is a planar Schottky barrier rectifier in CFP3 (SOD123W) package, designed for low-voltage, high-efficiency DC/DC conversion and reverse polarity protection. It delivers 2 A average forward current at ≤167 °C solder point temperature, 20 V reverse voltage rating, and typ. 460 mV forward voltage at 2 A and 25 °C junction temperature.
For engineers reviewing the PMEG2020CERX datasheet, PMEG2020CERX pinout, PMEG2020CERX application, or PMEG2020CERX equivalent, key selection criteria include low VF for thermal efficiency, clip-bonded thermal performance, SOD123W footprint compatibility, and 50 A non-repetitive surge capability in compact SMD form.
Technical Context
This Schottky diode uses a planar metal–semiconductor junction to achieve fast recovery (typ. 5.5 ns trr) and negligible minority-carrier storage, enabling operation in high-frequency SMPS topologies up to 20 kHz square-wave duty cycling. Its clip-bond construction reduces thermal resistance to 18 K/W (junction-to-solder-point), supporting sustained 2 A DC conduction on standard FR4 with 1 cm² cathode pad.
The device exhibits strong temperature-dependent VF behavior: VF rises to 590 mV at −40 °C but drops to 380 mV at 125 °C (2 A), while IR increases from 8 µA at 25 °C to 25 mA at 125 °C under 20 V reverse bias - critical for low-power standby leakage budgets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 20 V maximum reverse voltage - defines safe blocking range in 12 V/15 V rail protection and buck converter freewheeling paths |
| IF(AV) | 2 A average forward current - rated at δ = 0.5, 20 kHz square wave, Tsp ≤ 167 °C - supports continuous mid-power DC/DC output rectification |
| VF | 460 mV typical at IF = 2 A, Tj = 25 °C - enables <0.92 W conduction loss per diode, reducing heatsink need in space-constrained designs |
| IR | 25 mA max at VR = 20 V, Tj = 125 °C - sets upper bound on reverse leakage power dissipation in hot ambient environments |
| trr | 5.5 ns typical reverse recovery time - eliminates switching tail current, minimizing EMI and losses in >500 kHz converters |
| Rth(j-sp) | 18 K/W thermal resistance junction-to-solder point - allows direct thermal coupling to PCB copper, enabling passive cooling without thermal vias |
| IFS M | 50 A non-repetitive peak forward surge - withstands inrush and fault currents in 24 V industrial power inputs |
Pinout & Package
Encapsulated in CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile optimized for reflow soldering and thermal transfer via cathode tab.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side bar) | Cathode (K) | Primary heat path and return node; solder pad must be ≥1 cm² for full 2 A rating; marking bar identifies polarity |
| 2 | Anode (A) | Input/switching node connection; minimal thermal contribution; routed with low-inductance trace in high-dI/dt paths |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | Typ. 460 mV @ 2 A ensures <1 W conduction loss at full load - critical for >90 % efficiency in 3.3 V–12 V DC/DC stages |
| Clip bond thermal construction | Reduces Rth(j-sp) to 18 K/W - enables 2 A operation on standard FR4 without thermal vias or heatsinks |
| SOD123W footprint compatibility | Matches JEDEC-standard 2.6 mm × 1.7 mm outline - drop-in replacement for legacy Schottkys in high-volume consumer and industrial PCBs |
| Fast step/ramp recovery | 5.5 ns trr with 0.6 A IRM limits switching node ringing and EMI generation in synchronous rectifier and flyback designs |
| High surge robustness | 50 A IFSM withstands 8.3 ms half-sine surges - supports input-stage protection in 24 V automotive and industrial power supplies |
Applications
| DC/DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
|
Use Scenario: Secondary-side rectification in 5 V/3.3 V buck converters operating at 500 kHz–2 MHz. IC Role / Device Role / Timing Role: Freewheeling diode conducting during high-side switch off-time; handles bidirectional current transients. Use Value: 5.5 ns trr prevents reverse recovery losses; 460 mV VF minimizes conduction loss at 2 A load, improving light-load efficiency by >3 % vs. standard PN diodes. |
Use Scenario: Input protection for USB-C PD adapters and PoE-powered devices against accidental reverse cable insertion. IC Role / Device Role / Timing Role: Series-blocking element placed between connector and primary regulator; conducts only during correct polarity. Use Value: 20 V VR rating covers 12 V/15 V systems with margin; 25 mA IR at 125 °C ensures <0.5 mW standby loss even in sealed enclosures. |
| SMPS Flyback Snubber Clamp | Low-Power Standby Supply |
|
Use Scenario: Clamp diode in RCD snubber networks across flyback transformer primary windings in 12 V/24 V offline SMPS. IC Role / Device Role / Timing Role: Fast turn-on clamping element absorbing leakage inductance energy during MOSFET turn-off edge. Use Value: 50 A IFSM absorbs single-event spikes; 5.5 ns trr avoids secondary oscillation that could trigger false overvoltage shutdown. |
Use Scenario: Auxiliary winding rectifier in multi-output flyback supplies powering microcontrollers and sensors in always-on IoT nodes. IC Role / Device Role / Timing Role: Low-leakage rectifier delivering <100 mA at 3.3 V from auxiliary winding; operates continuously at elevated ambient temperatures. Use Value: 8 µA IR at 25 °C and 20 V ensures <0.16 µW reverse power loss - extends battery life in energy-harvesting applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB055LAM-40TR | 40 V VR, 0.5 A IF(AV), DO-214AC package - higher voltage, lower current, larger footprint | Used in 24 V input protection where 20 V margin is insufficient; not suitable for 2 A DC/DC outputs | Select when system requires >30 V blocking but can accept 50 % lower current and 3× board area |
| SS22HE3_A/H | 20 V VR, 2 A IF(AV), SMA package - same ratings but 130 K/W Rth(j-a), no clip bond, higher VF (550 mV typ) | Fits cost-sensitive consumer designs where thermal performance is secondary to BOM cost | Choose only if PCB layout allows ≥2 cm² copper pour and efficiency loss <0.15 W is acceptable |
Compared with RB055LAM-40TR and SS22HE3_A/H, PMEG2020CERX uniquely combines 2 A current, 20 V rating, ultra-low VF, and clip-bond thermal performance in SOD123W - making it optimal for space- and thermally constrained 12 V–24 V industrial DC/DC modules.
Availability
PMEG2020CERX is available at Aetrix Electronics and suitable for DC/DC converter output rectification, reverse polarity protection, SMPS flyback snubber clamp, and low-power standby supply requiring stable component supply and consistent SOD123W assembly yield.
Supply support for PMEG2020CERX 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 essential semiconductors - including logic, discretes, MOSFETs, and ESD protection - serving automotive, industrial, and consumer markets.
The PMEG2020CERX belongs to Nexperia's CFP3 Schottky rectifier product line, engineered specifically for thermally demanding, high-efficiency power conversion in compact SMD applications where low VF and fast recovery are mandatory.
FAQ
What is the maximum allowable solder point temperature for continuous 2 A operation?
The datasheet specifies Tsp ≤ 167 °C for IF(AV) = 2 A under δ = 0.5, 20 kHz square-wave conditions. Exceeding this temperature reduces average current capability nonlinearly - Fig. 10 shows 2 A is only sustainable up to ~110 °C ambient on 1 cm² cathode pad. Thermal design must maintain solder point below 167 °C during worst-case transient loads.
Does PMEG2020CERX have automotive qualification?
No. The datasheet explicitly states this device is "non-automotive qualified" and is neither tested nor warranted for automotive applications. It lacks AEC-Q101 stress testing, PPAP documentation, and zero-defect manufacturing controls required for automotive use. For automotive-grade alternatives, consult Nexperia's AEC-Q101-certified Schottky portfolio.
Can PMEG2020CERX replace a standard PN rectifier in an existing 12 V flyback design?
Yes - provided VR ≥ 20 V and IF(AV) ≤ 2 A. Its 5.5 ns trr eliminates reverse recovery losses present in PN diodes, reducing EMI and improving efficiency by 2–4 %. However, layout must accommodate its SOD123W footprint and ensure cathode pad thermal relief matches the 1 cm² requirement for full current rating.
How does reverse leakage (IR) behave at elevated temperatures?
IR increases exponentially with junction temperature: from 8 µA at 25 °C to 25 mA at 125 °C under 20 V reverse bias. This 3,125× increase means standby power loss rises from 0.16 µW to 500 µW - critical for battery-powered applications. Thermal management of the cathode pad directly impacts system-level leakage budget.
PMEG2020CERX 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):
- 20 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 520 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 5.5 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 20 V
- Capacitance @ Vr, F:
- 145pF @ 1V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- 175°C
PMEG2020CERX FAQ
1.How can I place an order for PMEG2020CERX through Aetrix?
Please submit a Request for Quotation (RFQ) for PMEG2020CERX 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 PMEG2020CERX reliable?
The price and inventory of PMEG2020CERX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMEG2020CERX is usually 5 days.
3.What payment methods are accepted for PMEG2020CERX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMEG2020CERX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMEG2020CERX?
PMEG2020CERX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMEG2020CERX 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 PMEG2020CERX?
For technical support, including PMEG2020CERX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMEG2020CERX requirements.
6.How does Aetrix verify that PMEG2020CERX is sourced from the original manufacturer or authorized distributors?
All PMEG2020CERX 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 PMEG2020CERX meets industry standards.
7.What is the process for return or replacement of PMEG2020CERX?
All PMEG2020CERX units undergo pre-shipment inspection (PSI). If there is an issue with PMEG2020CERX, 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 PMEG2020CERX part is unused and in its original packaging.
Return procedure for PMEG2020CERX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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