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Taiwan Semiconductor Corporation SR4090PT
- Part No.:
- SR4090PT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
SR4090PT.pdf
- Description:
- DIODE ARR SCHOTT 90V 40A TO247AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,880
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Product details
Overview
SR4090PT from Taiwan Semiconductor is a 40A, 90V Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring dual-die construction, 400A surge capability, 1.2°C/W junction-to-case thermal resistance, and 0.90V forward voltage at 20A/25°C - deployed in high-efficiency DC-DC converters and industrial SMPS.
For engineers reviewing the SR4090PT datasheet, SR4090PT pinout, SR4090PT application, or SR4090PT equivalent, key selection criteria include its 90V VRRM rating, AEC-Q101 qualification availability (H-suffix variant), low VF at elevated current, TJ max of 150°C, and compatibility with high-reliability power conversion designs requiring robust surge handling and thermal performance.
Technical Context
This device operates as a unidirectional power rectifier with two independent Schottky die in a single TO-247AD package. Its 90V repetitive peak reverse voltage and 10mA reverse leakage at 125°C support stable operation in mid-voltage industrial and consumer power supplies.
The 1.2°C/W RθJC, 400A IFSM (8.3ms half-sine), and guard ring structure enable reliable conduction under transient overloads and thermal cycling - critical for adapter and TV power stage designs where efficiency and ruggedness are co-constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF | 40 A - continuous average forward current at case temperature ≤ 100°C |
| IFSM | 400 A - peak non-repetitive surge current survivable for 8.3ms half-sine wave |
| VF @ 20A, 25°C | 0.90 V - forward voltage drop per diode, directly determining conduction loss in high-current paths |
| IR @ 90V, 125°C | 10 µA - reverse leakage at rated voltage and max junction temperature, affecting standby power |
| RθJC | 1.2 °C/W - thermal resistance from junction to case, enabling accurate heatsink sizing for 40A operation |
| TJ max | 150 °C - maximum allowable junction temperature, supporting extended lifetime in sealed enclosures |
Pinout & Package
Package: TO-247AD (TO-3P), 3-terminal through-hole package with isolated tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 molding compound, 6.10g mass, 1.13 N·m max mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input terminal for first Schottky die | Connects to input rail; requires low-inductance layout to minimize switching noise |
| Cathode (Tab) | Common cathode for both dies | Electrically connected to metal tab - must be mounted to heatsink with electrical isolation if needed |
| Anode 2 | Input terminal for second Schottky die | Enables dual-channel or interleaved rectification; independent from Anode 1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual-die configuration | Two independent 40A Schottky rectifiers in one TO-247AD package - reduces board area vs. discrete solutions |
| Guard ring structure | Enhances voltage standoff margin and prevents edge breakdown under transient overvoltage stress |
| AEC-Q101 qualification option | H-suffix variants (e.g., SR4090PTH) meet automotive-grade reliability requirements for under-hood power modules |
| Low VF at high current | 0.90V @ 20A/25°C enables >92% efficiency in 12V–48V output DC-DC stages at full load |
| UL Recognized (E-326243) | Validated safety compliance for end-equipment certification in adapters, monitors, and TVs |
Applications
| Server Power Supply | Industrial DC-DC Converter |
|---|---|
Use Scenario: Primary-side synchronous rectification in 48V input, 12V/24V output telecom/server PSUs operating at 200–500kHz. IC Role / Device Role / Timing Role: High-current Schottky rectifier replacing MOSFETs in secondary-side synchronous topology or used in freewheeling position. Use Value: 0.90V VF minimizes conduction loss at 40A output; 150°C TJ max supports compact heatsinking in constrained airflow environments. | Use Scenario: Output rectification in isolated 24V/48V industrial DC-DC modules powering PLCs and motor drives. IC Role / Device Role / Timing Role: Dual-die configuration allows interleaved operation or redundancy across parallel rails. Use Value: 400A IFSM withstands inrush surges during cold-start; guard ring ensures long-term reliability under line transients. |
| Flat Panel TV Power Board | AC Adapter Secondary Stage |
Use Scenario: Main 12V/19V output rectification in slim-profile TV power supplies with tight thermal budgets. IC Role / Device Role / Timing Role: High-efficiency Schottky rectifier in quasi-resonant flyback or LLC secondary side. Use Value: 1.2°C/W RθJC enables direct mounting to chassis for passive cooling; RoHS/halogen-free compliance meets regional regulations. | Use Scenario: 20V output rectification in universal-input 65W–120W laptop adapters. IC Role / Device Role / Timing Role: Freewheeling diode in active-clamp forward or asymmetrical half-bridge topologies. Use Value: 90V VRRM provides margin above reflected 20V output + clamp voltage; 10µA IR at 125°C limits no-load power consumption. |
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-40CPH09-M3 | Same 90V VRRM, 40A IF, TO-247AC package; VF = 0.87V @ 20A/25°C; no guard ring specified | Lower VF improves light-load efficiency but lacks documented overvoltage protection structure | Preferred where minimal conduction loss dominates; verify layout robustness against line spikes |
| ON Semiconductor MBR4090CT | 90V VRRM, 40A IF, TO-220AB package; VF = 0.92V @ 20A/25°C; single-die dual common-cathode | Smaller footprint but higher RθJC (~2.5°C/W); not AEC-Q101 qualified | Acceptable for cost-sensitive, lower-power adapters; unsuitable for high-TA or automotive use |
Compared with VS-40CPH09-M3 and MBR4090CT, the SR4090PT offers superior surge immunity via guard ring design and lower thermal resistance in TO-247AD, making it optimal for thermally demanding, high-reliability industrial and automotive-qualified (H-suffix) power systems.
Availability
SR4090PT is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and flat-panel TV power boards requiring stable component supply, long-lifecycle sourcing, and consistent parametric performance across production batches.
Supply support for SR4090PT 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, computing, and consumer markets since 1979.
The SR4020PT–SR40100PT family was designed specifically for high-current, medium-voltage Schottky rectification in space-constrained, thermally aggressive power conversion applications - emphasizing ruggedness, efficiency, and regulatory compliance.
FAQ
What is the maximum junction temperature rating for SR4090PT?
The SR4090PT has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official TSC datasheet revision H2103. This allows operation in high-ambient environments such as enclosed server power supplies or industrial motor drive cabinets when paired with appropriate heatsinking. Derating curves confirm usable current capacity down to 25A at 125°C case temperature.
Is SR4090PT pin-compatible with other parts in the SR40xxPT series?
Yes - all SR40xxPT devices share identical TO-247AD (TO-3P) mechanical outline, pin assignment (Anode1–Cathode–Anode2), and terminal plating. The SR4090PT can replace SR4020PT through SR40100PT on the same PCB layout, provided voltage and thermal margins are validated for the specific application's reverse voltage and power dissipation requirements.
Does SR4090PT have AEC-Q101 qualification?
The base SR4090PT is not AEC-Q101 qualified; however, the variant SR4090PTH (with 'H' suffix) is explicitly listed as AEC-Q101 qualified in TSC's ordering information. Engineers targeting automotive applications must specify SR4090PTH and verify qualification status using the full part number and latest TSC release notes.
What is the forward voltage specification for SR4090PT at 40A?
The SR4090PT datasheet specifies forward voltage only at 20A (0.90V typ @ 25°C). At 40A, VF increases due to resistive and thermal effects; typical measured values range from 1.05V to 1.15V depending on junction temperature. Designers should use the derating curve (Fig.1) and thermal model to estimate actual VF under real operating conditions.
How does the guard ring in SR4090PT improve reliability?
The guard ring in SR4090PT is a diffused p-type region surrounding the Schottky junction edge, which reduces electric field crowding and prevents premature avalanche breakdown during voltage transients. In practice, this extends device lifetime in SMPS applications exposed to line surges or inductive kickback, particularly in TV and adapter designs where UL 62368-1 transient immunity is required.
SR4090PT 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):
- 90 V
- Current - Average Rectified (Io) (per Diode):
- 40A
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 90 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AD (TO-3P)
SR4090PT FAQ
1.How can I place an order for SR4090PT through Aetrix?
Please submit a Request for Quotation (RFQ) for SR4090PT 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 SR4090PT reliable?
The price and inventory of SR4090PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR4090PT is usually 5 days.
3.What payment methods are accepted for SR4090PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR4090PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR4090PT?
SR4090PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR4090PT 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 SR4090PT?
For technical support, including SR4090PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR4090PT requirements.
6.How does Aetrix verify that SR4090PT is sourced from the original manufacturer or authorized distributors?
All SR4090PT 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 SR4090PT meets industry standards.
7.What is the process for return or replacement of SR4090PT?
All SR4090PT units undergo pre-shipment inspection (PSI). If there is an issue with SR4090PT, 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 SR4090PT part is unused and in its original packaging.
Return procedure for SR4090PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SR4090PT Tags
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