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Diodes Incorporated PD3S220L-7
- Part No.:
- PD3S220L-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3S220L-7.pdf
- Description:
- DIODE SCHOTTKY 20V 2A PWRDI323
- Quantity:
- Payment:
- Shipping:
Inventory:5,012
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Product details
Overview
PD3S220L-7 from Diodes Incorporated is a 20 V, 2.0 A surface-mount Schottky barrier rectifier in PowerDI®323 package, featuring ultra-low forward voltage (0.35 V at 1.0 A, 25°C), high surge capability (33 A), and AEC-Q101 qualification for automotive power conversion. It serves as a primary output rectifier in low-voltage DC/DC converters for infotainment systems.
For engineers reviewing the PD3S220L-7 datasheet, PD3S220L-7 pinout, PD3S220L-7 application, or PD3S220L-7 equivalent, key selection criteria include forward voltage at 2.0 A, thermal resistance junction-to-soldering point (6 °C/W), leakage current at 125°C (30 μA), and compliance with AEC-Q101 for under-hood deployment.
Technical Context
This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and sustain repetitive 20 V reverse blocking. Its low VF enables high-efficiency operation in 3.3 V and 5 V synchronous buck secondary-side rectification.
Thermal performance is optimized for compact PCB layouts: RθJS = 6 °C/W to soldering point on FR-4 with 2 oz copper, and RθJA = 144 °C/W with recommended pad design per AP02001. Junction temperature range spans –65°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum non-repetitive reverse voltage before breakdown; sets safe operating limit in 12 V automotive rail clamping |
| IF(AV) | 2.0 A - Continuous average forward current at TA = 25°C; supports sustained 2 A load in USB-C PD sink designs |
| VF @ 2.0A, 25°C | 0.44 V - Measured forward drop at full rated current; reduces conduction loss by >15% vs. standard silicon diodes |
| IFSM | 33 A - Non-repetitive surge rating for 8.3 ms half-sine; withstands inrush during cold-start of LED drivers |
| RθJS | 6 °C/W - Junction-to-soldering-point thermal resistance; enables direct thermal coupling to PCB copper pour for passive cooling |
| IR @ 20V, 125°C | 30 μA - Reverse leakage at max operating temperature; ensures minimal standby power loss in always-on modules |
| CT @ 10V, 1MHz | 46 pF - Junction capacitance; maintains fast switching (<10 ns recovery) without excessive EMI in 500 kHz SMPS |
Pinout & Package
Package: PowerDI®323 - ultra-small surface-mount plastic package (2.50 × 1.90 × 0.65 mm), UL 94V-0 rated, moisture sensitivity level 1, cathode-banded polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to switch node in buck converter; low series resistance minimizes voltage overshoot during turn-off |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output capacitor ground return; low IR ensures stable regulation under light-load conditions |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge avalanche during voltage transients, enabling reliable operation in noisy 12 V automotive environments |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Lead-free & RoHS-compliant finish | Matte tin annealed over copper leadframe; compatible with Pb-free reflow profiles and MIL-STD-202 solderability requirements |
| Green molding compound | Halogen-free (no Br, Sb); meets IEC 61249-2-21 and supports environmentally regulated supply chains |
Applications
| Automotive Infotainment Power Supply | USB-C PD Sink Rectification |
|---|---|
Use Scenario: 5 V/3 A output stage of a vehicle head unit DC/DC converter handling engine cranking dips and load dump transients. IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier replacing synchronous MOSFET drive complexity in cost-sensitive designs. Use Value: 0.44 V VF at 2.0 A reduces conduction loss by 0.88 W vs. 0.88 V Si diode, lowering thermal stress on compact PCB. | Use Scenario: Output rectification in portable USB-C power adapter delivering up to 18 W (5 V/3.6 A) with tight size constraints. IC Role / Device Role / Timing Role: Low-loss freewheeling path during high-frequency (500–1000 kHz) buck operation. Use Value: 46 pF CT and <10 ns reverse recovery minimize switching loss and EMI generation near sensitive RF receivers. |
| Industrial Sensor Node Power | LED Driver Secondary Rectification |
Use Scenario: 3.3 V bias rail generation for CAN transceivers and analog front-ends in battery-backed industrial sensors. IC Role / Device Role / Timing Role: Input protection and rectification for energy-harvesting boost converter outputs. Use Value: 30 μA IR at 125°C limits quiescent current drain, extending battery life beyond 10 years in low-duty-cycle deployments. | Use Scenario: Constant-current LED driver with 24 V input and 12 V/1 A output driving automotive interior lighting. IC Role / Device Role / Timing Role: Output rectifier in isolated flyback secondary winding. Use Value: 33 A IFSM handles lamp hot-swap surges without derating; PowerDI®323 footprint saves >40% board area vs. SMA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS22H-TP (Micro Commercial) | Same 20 V VRRM, 2 A IF(AV), but VF = 0.52 V @ 2 A; RθJA = 190 °C/W on FR-4 | Lacks AEC-Q101 qualification; not rated for automotive under-hood use | Select when cost is critical and ambient temperature remains <85°C |
| SB220-E3/52T (Vishay) | Identical 20 V/2 A rating; VF = 0.45 V @ 2 A; packaged in SMA (larger, 4.5 × 2.7 mm) | Higher thermal resistance (RθJA ≈ 200 °C/W); requires larger pad area for same power dissipation | Select only if legacy SMA footprint compatibility is mandatory |
Compared with SS22H-TP and SB220-E3/52T, PD3S220L-7 delivers superior thermal performance (6 °C/W RθJS), automotive qualification, and 30% smaller footprint-enabling higher power density in space-constrained AEC-Q101-compliant designs.
Availability
PD3S220L-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C power delivery adapters, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PD3S220L-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, specializing in high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.
The PowerDI®323 Schottky rectifier product line targets space-constrained, thermally demanding applications where low VF, AEC-Q101 compliance, and halogen-free packaging are essential-especially in next-generation automotive body electronics and portable power systems.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The PD3S220L-7 has an operating junction temperature range of –65°C to +125°C. For continuous DC operation at 2.0 A, thermal design must ensure TJ does not exceed +125°C, which requires maintaining RθJA ≤144 °C/W using the recommended FR-4 pad layout per AP02001.
Does this device require a heatsink in typical 2 A applications?
No external heatsink is required. With RθJS = 6 °C/W and RθJA = 144 °C/W on optimized FR-4, the device dissipates 0.88 W at 2.0 A and 0.44 V VF, resulting in ~127°C junction rise above 25°C ambient-within spec when ambient stays ≤–2°C. Standard PCB copper pour suffices.
Is the cathode band orientation consistent across all PowerDI®323 devices?
Yes. The cathode band is always located on the same side of the PowerDI®323 package: adjacent to the larger molded feature near Pin 1 (cathode), as shown in the top-view diagram on page 2 of DS31733. This matches industry-standard marking convention for Schottky rectifiers.
Can PD3S220L-7 replace a standard 1N5819 in existing designs?
Yes, with caveats: it offers lower VF (0.44 V vs. 0.475 V) and higher IFSM (33 A vs. 25 A), but its PowerDI®323 footprint differs from DO-214AC (SMA). Direct replacement requires PCB land pattern revision; electrical performance improves efficiency and surge robustness in new designs.
PD3S220L-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 323
- 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:
- 490 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 160 µA @ 20 V
- Capacitance @ Vr, F:
- 46pF @ 10V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 323
- Operating Temperature - Junction:
- -65°C ~ 125°C
PD3S220L-7 FAQ
1.How can I place an order for PD3S220L-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3S220L-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 PD3S220L-7 reliable?
The price and inventory of PD3S220L-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3S220L-7 is usually 5 days.
3.What payment methods are accepted for PD3S220L-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3S220L-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3S220L-7?
PD3S220L-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3S220L-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 PD3S220L-7?
For technical support, including PD3S220L-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3S220L-7 requirements.
6.How does Aetrix verify that PD3S220L-7 is sourced from the original manufacturer or authorized distributors?
All PD3S220L-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 PD3S220L-7 meets industry standards.
7.What is the process for return or replacement of PD3S220L-7?
All PD3S220L-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3S220L-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 PD3S220L-7 part is unused and in its original packaging.
Return procedure for PD3S220L-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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