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Diodes Incorporated SDM2A20CSP-7
- Part No.:
- SDM2A20CSP-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SDM2A20CSP-7.pdf
- Description:
- DIODE SCHOTT 20V 2A X3-WLB1406-2
- Quantity:
- Payment:
- Shipping:
Inventory:2,732
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Product details
Overview
SDM2A20CSP-7 from Diodes Incorporated is a 20 V, 2.0 A Schottky barrier rectifier in chip-scale package (X3-WLB1406-2), featuring VF ≤ 0.53 V at 2.0 A and IR ≤ 80 µA at 20 V. It serves as a low-loss blocking or reverse protection diode in space-constrained DC/DC converters and portable power rails.
For engineers reviewing the SDM2A20CSP-7 datasheet, SDM2A20CSP-7 pinout, SDM2A20CSP-7 application, or SDM2A20CSP-7 equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance on standard PCB layouts, leakage performance at elevated temperature and voltage, and CSP footprint compatibility with fine-pitch assembly processes.
Technical Context
This Schottky rectifier uses a planar metal–semiconductor junction optimized for low VF and controlled IR across –55°C to +150°C. Its 70 pF junction capacitance at 5 V enables fast switching in boost and buck converter freewheeling paths.
The X3-WLB1406-2 package delivers RθJA = 73°C/W on 1 in² copper and 140°C/W on minimum pad layout-critical for thermal management in high-density battery-powered systems where board area and heat dissipation are tightly coupled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum reverse blocking capability without breakdown under repetitive conditions |
| IO | 2.0 A - Continuous average forward current rating at TA = 25°C with defined PCB copper area |
| VF max | 0.53 V @ 2.0 A - Limits conduction loss to ≤1.06 W in series power path |
| IR max | 80 µA @ 20 V - Ensures <16 µW reverse power dissipation at full-rated voltage |
| RθJA | 73 °C/W - Enables ~14°C rise above ambient at 2.0 A on 1 in² 2 oz copper |
| Junction Capacitance | 70 pF @ 5 V - Supports >1 MHz switching with minimal capacitive loading on control node |
Pinout & Package
Package: X3-WLB1406-2 chip-scale package (CSP), 0.84 mm² footprint, 0.304 mm height, cathode marked by dot and notch. Solderable terminals per MIL-STD-202, Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Anode connection | Current entry point; connects to input/source side of rectification path |
| Pin 2 (Cathode) | Cathode connection | Current exit point; marked by dot and notch; ties to output/load or ground return |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at 2.0 A | ≤0.53 V reduces I²R losses by >30% vs. comparable 2A silicon rectifiers |
| Low IR at 150°C | Leakage remains stable up to 150°C, preventing thermal runaway in sealed enclosures |
| Chip-scale footprint | 0.84 mm² area saves >60% board space vs. SOD-123 and >85% vs. SMA packages |
| Lead-free & Green | Fully RoHS-compliant, halogen- and antimony-free per Diodes Inc. specification |
Applications
| USB Power Delivery Input Protection | Wireless Charging Receiver Rectification |
|---|---|
Use Scenario: Prevents reverse current flow from battery into USB-C port during adapter hot-swap events. IC Role / Device Role / Timing Role: Reverse protection diode placed between VBUS and system rail. Use Value: 0.53 V VF minimizes voltage drop across protection path, preserving ≥4.77 V at 2 A for downstream PMIC input. | Use Scenario: Rectifies AC output from resonant wireless charging coil before Li-ion charging IC. IC Role / Device Role / Timing Role: High-frequency switching diode in half-wave rectifier stage. Use Value: 70 pF CT and low VF enable efficient rectification up to 500 kHz with <20 mW conduction loss at 1.5 A. |
| Portable SSD Boost Converter | Wearable Sensor Node Power Rail |
Use Scenario: Boost diode in 3.3 V → 5 V DC/DC converter powering USB peripherals in compact SSD enclosures. IC Role / Device Role / Timing Role: Freewheeling diode conducting during low-side switch off-time. Use Value: 0.84 mm² CSP footprint allows placement directly adjacent to inductor, minimizing parasitic loop inductance. | Use Scenario: Blocking diode isolating coin-cell backup supply from main LiPo rail in medical wearables. IC Role / Device Role / Timing Role: Low-leakage isolation diode ensuring <1 µA standby current drain. Use Value: 80 µA IR at 20 V ensures <1.6 µW reverse power dissipation, extending 200 µAh coin-cell life by >12 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS22 (Diodes Inc.) | DO-214AC package; VF = 0.5 V @ 2 A; IR = 500 µA @ 20 V; RθJA = 90°C/W | Larger footprint (3.5 mm²); higher leakage limits use in >85°C environments | Select when manual rework or wave soldering required; avoid in ultra-thin or thermally constrained designs |
| RB050M-30 (ROHM) | SOD-123FL package; VF = 0.45 V @ 2 A; IR = 100 µA @ 20 V; RθJA = 120°C/W | 0.025 mm thinner profile but 2.1 mm² area; higher thermal resistance limits power density | Prefer for cost-sensitive consumer designs where 0.84 mm² CSP placement is not feasible |
Compared with SS22 and RB050M-30, SDM2A20CSP-7 delivers the smallest footprint and lowest thermal resistance among 2A Schottky rectifiers in its voltage class-enabling higher power density and better thermal margin in space-limited portable electronics.
Availability
SDM2A20CSP-7 is available at Aetrix Electronics and suitable for USB PD adapters, wireless charging receivers, and portable SSD power supplies requiring stable component supply and consistent CSP packaging.
Supply support for SDM2A20CSP-7 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, serving automotive, industrial, computing, and consumer markets since 1960.
The SDM2A20CSP belongs to Diodes' CSP Schottky rectifier product line, engineered specifically for miniaturized power conversion in battery-powered devices where board area, thermal performance, and low-loss operation are co-constrained.
FAQ
What is the maximum operating temperature for SDM2A20CSP-7?
The SDM2A20CSP-7 is rated for continuous operation from –55°C to +150°C junction temperature. Its low IR drift over temperature and stable VF ensure reliable rectification in sealed wearable enclosures and automotive cabin modules where ambient temperatures exceed 85°C.
Does SDM2A20CSP-7 require special PCB layout considerations?
Yes-thermal performance depends critically on pad layout. The datasheet specifies two configurations: minimum pad (RθJA = 140°C/W) and 1 in² copper (RθJA = 73°C/W). Use AP02001 layout guidelines to achieve specified thermal resistance and avoid solder voiding in the CSP's bottom-terminated structure.
Is SDM2A20CSP-7 suitable for reverse polarity protection in 5 V systems?
Yes-its 20 V VRRM provides 4× safety margin against 5 V rail transients, and 0.53 V VF ensures <106 mV dropout at 200 mA load. Combined with <80 µA IR at 5 V, it delivers <4 µW reverse power dissipation-ideal for always-on sensor nodes.
How does the X3-WLB1406-2 package differ from conventional SMD diodes?
X3-WLB1406-2 is a wafer-level chip-scale package with direct copper bumps on silicon die-no leadframe or molding compound. This yields 0.84 mm² area, 0.304 mm height, and superior thermal conductivity versus SOD-123 or DO-214AC, but requires precise stencil design and reflow profiling for reliable solder joint formation.
SDM2A20CSP-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 2-XDFN
- 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:
- 530 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 80 µA @ 20 V
- Capacitance @ Vr, F:
- 70pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X3-WLB1406-2
- Operating Temperature - Junction:
- -55°C ~ 150°C
SDM2A20CSP-7 FAQ
1.How can I place an order for SDM2A20CSP-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDM2A20CSP-7 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 SDM2A20CSP-7 reliable?
The price and inventory of SDM2A20CSP-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDM2A20CSP-7 is usually 5 days.
3.What payment methods are accepted for SDM2A20CSP-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM2A20CSP-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDM2A20CSP-7?
SDM2A20CSP-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDM2A20CSP-7 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 SDM2A20CSP-7?
For technical support, including SDM2A20CSP-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM2A20CSP-7 requirements.
6.How does Aetrix verify that SDM2A20CSP-7 is sourced from the original manufacturer or authorized distributors?
All SDM2A20CSP-7 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 SDM2A20CSP-7 meets industry standards.
7.What is the process for return or replacement of SDM2A20CSP-7?
All SDM2A20CSP-7 units undergo pre-shipment inspection (PSI). If there is an issue with SDM2A20CSP-7, 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 SDM2A20CSP-7 part is unused and in its original packaging.
Return procedure for SDM2A20CSP-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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