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Taiwan Semiconductor Corporation SR3020PT
- Part No.:
- SR3020PT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
SR3020PT.pdf
- Description:
- DIODE ARR SCHOTT 20V 30A TO247AD
- Quantity:
- Payment:
- Shipping:
Inventory:7,292
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Product details
Overview
SR3020PT from Taiwan Semiconductor is a 30A, 20V repetitive peak reverse voltage Schottky barrier rectifier in TO-247AD package, featuring 0.55V forward voltage at 15A/25°C, 300A surge capability, and AEC-Q101 qualification option. It serves as primary output rectifier in high-efficiency SMPS for consumer power adapters.
For engineers reviewing the SR3020PT datasheet, SR3020PT pinout, SR3020PT application, or SR3020PT equivalent, key selection criteria include low VF for thermal management, TJ max of 125°C for ambient-limited designs, TO-247AD mounting compatibility, and dual-die configuration for parallel current handling.
Technical Context
This Schottky rectifier uses dual-die construction to achieve 30A average forward current with low conduction loss. Its 20V VRRM rating targets low-voltage DC-DC outputs and secondary-side rectification where fast switching and minimal reverse recovery are critical.
The device exhibits 1.5°C/W junction-to-case thermal resistance and supports 300A non-repetitive surge (8.3ms half-sine), enabling robust operation during transient load events in adapter and monitor power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum reverse blocking voltage; defines safe operating range for 5–12 V output rails |
| IF(AV) | 30 A - Continuous forward current rating; determines heatsink sizing for sustained load conditions |
| VF @ 15A, 25°C | 0.55 V - Low conduction loss per diode; reduces power dissipation and improves efficiency above 90% |
| IFSM | 300 A - Peak surge current capacity; withstands inrush and short-circuit transients without failure |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case; enables direct heatsink mounting with predictable temperature rise |
| TJ max | 125 °C - Maximum junction temperature; sets upper limit for thermal design margin in enclosed adapters |
| Package | TO-247AD (TO-3P) - Industry-standard 3-lead power package with isolated tab; supports mechanical mounting and thermal interface to heatsink |
Pinout & Package
TO-247AD (TO-3P) package with isolated metal tab (cathode-connected), matte tin-plated leads, and polarity marking. Mounting torque ≤1.13 N·m. Weight ≈6.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current terminal | Connects to transformer secondary or switch node; carries full load current into cathode |
| Cathode (Lead 2) | Output current terminal | Connects to output capacitor and load; electrically tied to isolated metal tab for heatsinking |
| Isolated Tab | Thermal & electrical cathode | Provides low-thermal-resistance path to heatsink while maintaining cathode potential; requires insulating washer if heatsink grounded |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown under voltage stress, improving reliability in high dv/dt SMPS environments |
| AEC-Q101 qualification option (SR3020PTH) | Validated for automotive-grade stress testing including temperature cycling and HTRB, supporting infotainment power modules |
| UL Recognized (E-326243) | Meets safety requirements for end-equipment certification in AC/DC adapters and monitors without additional isolation barriers |
| Halogen-free & RoHS compliant | Complies with IEC 61249-2-21 and EU RoHS directives; enables green manufacturing and export compliance |
| JESD201 Class 2 whisker resistance | Ensures long-term solder joint integrity in high-reliability applications with extended thermal cycling |
Applications
| Adapter Power Supply | Monitor DC-DC Converter |
|---|---|
Use Scenario: 12 V/24 A output stage in wall-mounted AC/DC adapter for laptops and peripherals. IC Role / Device Role / Timing Role: Primary output rectifier converting transformer secondary AC to regulated DC; replaces slower silicon diodes to reduce losses. Use Value: 0.55 V VF minimizes conduction loss at 15 A, enabling >92% efficiency and eliminating need for forced air cooling. | Use Scenario: 19 V input-to-12 V step-down converter in LCD monitor internal power board. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement; handles continuous 30 A load with fast turn-off. Use Value: Dual-die layout ensures current sharing stability; 300 A IFSM sustains operation during backlight inrush events. |
| TV Backlight Power | Industrial DC-DC Module |
Use Scenario: 24 V auxiliary rail supplying LED driver ICs and local regulators in smart TV mainboard. IC Role / Device Role / Timing Role: High-current freewheeling diode in buck converter feeding constant-current LED strings. Use Value: 125°C TJ max allows operation in thermally constrained TV chassis; TO-247AD tab enables direct heatsink attachment. | Use Scenario: 5 V/30 A output rectification in DIN-rail mounted industrial DC-DC module for PLC I/O power. IC Role / Device Role / Timing Role: Main output rectifier in isolated flyback topology; selected for reliability over 10-year field life. Use Value: UL Recognition and JESD201 Class 2 compliance ensure certification readiness and long-term solder joint integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH02-M3 | 20 V VRRM, 30 A IF, TO-247AC package, VF = 0.52 V @ 15 A, no AEC-Q101 option | Same voltage/current class but lacks automotive qualification; UL file not published | Preferred where lowest VF is critical and automotive qualification is unnecessary |
| ON Semiconductor MBR3020CT | 20 V VRRM, 30 A IF, TO-220AB package, VF = 0.54 V @ 15 A, dual common-cathode configuration | Smaller TO-220AB footprint; higher RθJC (3.0°C/W); unsuitable for >25 A continuous loads | Select when board space is constrained and thermal budget allows higher junction temperature rise |
Compared with VS-30CPH02-M3 and MBR3020CT, the SR3020PT offers superior thermal performance (1.5°C/W vs. ≥3.0°C/W), AEC-Q101 availability, and UL recognition-making it optimal for thermally dense, certified, or automotive-adjacent power supplies.
Availability
SR3020PT is available at Aetrix Electronics and suitable for switching mode power supplies, monitor DC-DC converters, and TV backlight power systems requiring stable component supply across production lifecycles.
Supply support for SR3020PT 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global industrial and consumer markets since 1979.
The SR3020PT belongs to TSC's SR30xPT Schottky rectifier family, engineered for high-efficiency, high-reliability secondary-side rectification in compact, thermally demanding AC/DC and DC/DC power stages.
FAQ
What is the maximum junction temperature rating for SR3020PT?
The SR3020PT has a maximum junction temperature (TJ max) of 125°C under normal operating conditions. This rating applies to the standard version; the AEC-Q101 qualified variant SR3020PTH supports up to 150°C. Thermal design must maintain junction temperature below this limit using the specified 1.5°C/W RθJC and appropriate heatsinking.
Does SR3020PT have a built-in guard ring, and what is its function?
Yes, the SR3020PT incorporates a guard ring structure. This feature prevents premature edge breakdown under high dv/dt or transient overvoltage conditions, enhancing ruggedness in switching power supplies. It directly improves reliability during line surges and startup transients without requiring external snubbers.
Is SR3020PT pin-compatible with other parts in the SR30xPT series?
No-SR3020PT shares the same TO-247AD package and 3-pin configuration with all SR30xPT variants, but voltage ratings differ across the series (20V to 150V). While mechanical mounting is identical, electrical substitution requires verification of VRRM, VF, and thermal limits for the target application; SR3020PT must not be replaced with higher-voltage variants without circuit review.
What does the "PT" suffix indicate in SR3020PT?
The "PT" suffix in SR3020PT denotes Taiwan Semiconductor's standard plastic TO-247AD (TO-3P) package with matte tin-plated leads and green molding compound. It distinguishes this version from tape-and-reel (PTH) or alternate finish variants. The "H" suffix (e.g., SR3020PTH) indicates AEC-Q101 qualification.
How is the SR3020PT marked on the device body?
The SR3020PT is marked with "SR3020PT" as the primary marking code on the top surface of the TO-247AD package. Additional markings include "G" for green compound, a two-digit year and two-digit week date code (YWW), and a factory code "F", per the official package outline diagram.
SR3020PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io) (per Diode):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 20 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AD (TO-3P)
SR3020PT FAQ
1.How can I place an order for SR3020PT through Aetrix?
Please submit a Request for Quotation (RFQ) for SR3020PT 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 SR3020PT reliable?
The price and inventory of SR3020PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR3020PT is usually 5 days.
3.What payment methods are accepted for SR3020PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR3020PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR3020PT?
SR3020PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR3020PT 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 SR3020PT?
For technical support, including SR3020PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR3020PT requirements.
6.How does Aetrix verify that SR3020PT is sourced from the original manufacturer or authorized distributors?
All SR3020PT 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 SR3020PT meets industry standards.
7.What is the process for return or replacement of SR3020PT?
All SR3020PT units undergo pre-shipment inspection (PSI). If there is an issue with SR3020PT, 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 SR3020PT part is unused and in its original packaging.
Return procedure for SR3020PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SR3020PT Tags
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