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Diodes Incorporated PD3S120L-7
- Part No.:
- PD3S120L-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- PowerDI™ 323
- Datasheet:
-
PD3S120L-7.pdf
- Description:
- DIODE SCHOTTKY 20V 1A PWRDI323
- Quantity:
- Payment:
- Shipping:
Inventory:20,895
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Product details
Overview
PD3S120L-7 from Diodes Incorporated is a 1.0A, 20V surface-mount Schottky barrier rectifier in PowerDI323 package, featuring ultra-low forward voltage (0.27V @ 0.1A), high surge capability (33A IFSM), and AEC-Q101 qualification for automotive power rail clamping and DC-DC output rectification.
For engineers reviewing the PD3S120L-7 datasheet, PD3S120L-7 pinout, PD3S120L-7 application, or PD3S120L-7 equivalent, key selection criteria include low VF at 1A load, thermal resistance (RθJS = 6°C/W), junction temperature range (–65°C to +125°C), and RoHS-compliant green packaging with matte tin annealed terminals.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient voltage immunity and suppress leakage under reverse bias. Its low barrier height enables sub-0.3V forward drop at light loads while maintaining <30µA IR at VR = 20V, TA = +25°C.
Designed for high-reliability automotive applications, it operates across –65°C to +125°C with RθJA of 144°C/W on polyimide PCBs and supports capacitance-loaded circuits when derated by 20% per datasheet guidance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse voltage before breakdown; defines safe blocking margin in 12V automotive systems. |
| IF(AV) | 1.0 A - Average forward current rating; supports continuous operation in compact DC-DC converter outputs. |
| VF @ 1.0A | 0.36 V - Forward voltage at full rated current; reduces conduction loss and thermal stress in high-efficiency power stages. |
| IFSM | 33 A - Non-repetitive surge current; withstands inrush and load-dump transients in vehicle electronics. |
| RθJS | 6 °C/W - Junction-to-solder-point thermal resistance; enables direct thermal coupling to PCB copper for passive cooling. |
| CT @ 10V | 46 pF - Junction capacitance at 10V reverse bias; minimizes switching noise and EMI in high-frequency SMPS designs. |
Pinout & Package
Package: PowerDI323 - ultra-small surface-mount plastic package (2.5 × 1.9 × 0.13 mm), UL 94V-0 rated, moisture sensitivity level 1, cathode-banded polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node or ground return) in buck/boost rectification paths. |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or positive supply; blocks reverse current up to 20V. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient immunity and prevents edge breakdown during voltage spikes in automotive load-dump events. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| Ultra-low VF at 0.1A | 0.27 V forward drop enables efficient biasing and sensing in low-power always-on circuits. |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br+Cl, <1000 ppm Sb); compliant with automotive environmental directives. |
Applications
| Automotive Body Control Module (BCM) | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Reverse polarity protection and load dump suppression in 12V BCM power inputs. IC Role / Device Role / Timing Role: Schottky rectifier providing low-loss forward path and fast recovery blocking. Use Value: 0.36V VF at 1A reduces heat generation vs. silicon diodes; 33A IFSM handles ISO 7637-2 pulse 5a without failure. | Use Scenario: Output rail clamping in USB-C PD sink applications with variable 5–20V input. IC Role / Device Role / Timing Role: Low-VF clamp diode protecting downstream regulators from overvoltage transients. Use Value: 20V VRRM matches USB-C PD max voltage; 46pF CT limits high-frequency ringing during fast transients. |
| Industrial Sensor Node Power Supply | LED Driver Output Rectification |
Use Scenario: Input rectification for wide-temperature-range sensor nodes operating from 9–36V DC sources. IC Role / Device Role / Timing Role: Primary AC/DC or DC/DC rectifier handling intermittent high-current bursts. Use Value: –65°C to +125°C operating range ensures functionality in unheated enclosures; RθJS = 6°C/W allows direct solder-pad thermal transfer. | Use Scenario: Secondary-side rectification in constant-current LED drivers for automotive lighting. IC Role / Device Role / Timing Role: High-efficiency synchronous rectifier replacement in isolated flyback outputs. Use Value: 0.31V VF at 0.7A lowers conduction loss vs. standard diodes, improving lumen/W efficiency and reducing heatsink size. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB120-E3/54 (Vishay) | Same 20V VRRM, 1A IF(AV), but TO-277 package (larger footprint, higher RθJA = 180°C/W). | Less suitable for space-constrained automotive modules; requires larger pad layout. | Select if legacy TO-277 compatibility or higher surge margin (40A IFSM) is prioritized over size. |
| SS12 (ON Semiconductor) | 20V VRRM, 1A IF(AV), SMA package; VF = 0.5V @ 1A - 40% higher than PD3S120L-7. | Higher conduction loss limits use in thermally tight LED driver or BCM designs. | Choose only where cost sensitivity outweighs thermal performance and AEC-Q101 compliance is not required. |
Compared with SB120-E3/54 and SS12, PD3S120L-7 delivers superior thermal performance (RθJS = 6°C/W), smallest footprint (PowerDI323), and automotive-qualified reliability-making it optimal for next-gen compact, high-temp automotive power rails.
Availability
PD3S120L-7 is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery clamping, and industrial sensor node power supplies requiring stable component supply and AEC-Q101 traceability.
Supply support for PD3S120L-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 and signal integrity solutions for automotive, industrial, and consumer markets.
The PD3S120L-7 belongs to Diodes' AEC-Q101-qualified Schottky rectifier product line, engineered specifically for low-VF, high-surge automotive power rail protection and DC-DC output rectification.
FAQ
What is the maximum junction temperature for continuous operation?
The PD3S120L-7 has an operating junction temperature range of –65°C to +125°C. Continuous operation at +125°C is permitted when average forward current is derated per Figure 5 in the datasheet, and thermal design maintains TJ ≤ +125°C using the specified RθJS = 6°C/W path to solder point.
Is PD3S120L-7 suitable for reverse polarity protection in 24V systems?
No. With a 20V peak repetitive reverse voltage (VRRM), PD3S120L-7 is rated only for nominal 12V automotive or ≤20V DC systems. For 24V applications, a ≥30V-rated Schottky such as PD3S30L-7 is required to ensure sufficient blocking margin and reliability.
Does the PowerDI323 package support automated optical inspection (AOI)?
Yes. The PowerDI323 package features a visible cathode band and coplanar, solderable matte tin annealed terminals compatible with standard AOI systems. Its small size (2.5 × 1.9 mm) and defined pad layout per Diodes' packaging guidelines enable reliable detection of solder joint quality and placement accuracy.
How does the guard ring die construction improve reliability?
The guard ring structure surrounds the active junction to suppress electric field crowding at the silicon edge, preventing premature avalanche breakdown during voltage transients. This enhances robustness against load-dump pulses (ISO 7637-2) and improves long-term stability under repeated surge stress in automotive environments.
PD3S120L-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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 420 mV @ 1 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
PD3S120L-7 FAQ
1.How can I place an order for PD3S120L-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for PD3S120L-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 PD3S120L-7 reliable?
The price and inventory of PD3S120L-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PD3S120L-7 is usually 5 days.
3.What payment methods are accepted for PD3S120L-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PD3S120L-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PD3S120L-7?
PD3S120L-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PD3S120L-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 PD3S120L-7?
For technical support, including PD3S120L-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PD3S120L-7 requirements.
6.How does Aetrix verify that PD3S120L-7 is sourced from the original manufacturer or authorized distributors?
All PD3S120L-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 PD3S120L-7 meets industry standards.
7.What is the process for return or replacement of PD3S120L-7?
All PD3S120L-7 units undergo pre-shipment inspection (PSI). If there is an issue with PD3S120L-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 PD3S120L-7 part is unused and in its original packaging.
Return procedure for PD3S120L-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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