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Taiwan Semiconductor Corporation SR3040PTH
- Part No.:
- SR3040PTH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
SR3040PTH.pdf
- Description:
- DIODE ARR SCHOTT 40V 30A TO247AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,515
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Product details
Overview
SR3040PTH from Taiwan Semiconductor is a 30A, 40V AEC-Q101-qualified Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring 0.55V forward voltage at 15A/25°C, 300A surge capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and high-efficiency SMPS secondary-side rectification.
For engineers reviewing the SR3040PTH datasheet, SR3040PTH pinout, SR3040PTH application, or SR3040PTH equivalent, key selection criteria include repetitive peak reverse voltage (40 V), junction-to-case thermal resistance (1.5 °C/W), TJ max rating (125 °C), AEC-Q101 qualification status, and dual-die configuration for parallel current handling.
Technical Context
This device implements a dual-die Schottky structure in a single TO-247AD package, enabling higher current density and reduced thermal resistance versus single-die alternatives. Its guard ring design enhances ruggedness against transient overvoltage events common in automotive power rails.
The SR3040PTH operates with a maximum junction temperature of 125°C (derated to zero current at 150°C per derating curve), supports 8.3ms half-sine surge currents up to 300A, and maintains IR ≤1000 µA at 40V/25°C and ≤20 mA at 40V/100°C-critical for low-leakage hold-up and standby performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 36–42 V nominal automotive systems. |
| IF | 30 A - Continuous average forward current; enables compact 30–60 W DC-DC output stages without forced air cooling. |
| VF @ 15A/25°C | 0.55 V - Low conduction loss; reduces power dissipation to ~8.25 W at full rated DC load, improving system efficiency. |
| IFSM | 300 A - Non-repetitive surge rating; withstands cold-start inrush and load-dump transients in vehicle electronics. |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case; allows direct heatsink mounting with predictable temperature rise under steady-state load. |
| TJ max | 125 °C - Maximum operating junction temperature; aligns with AEC-Q101 Grade 1 requirements for under-hood applications. |
| IR @ 40V/25°C | ≤1000 µA - Reverse leakage limit; ensures minimal standby power loss in always-on vehicle modules. |
Pinout & Package
Package: TO-247AD (TO-3P), 3-terminal through-hole package with isolated metal tab (cathode-connected case), matte tin-plated leads, UL 94V-0 molding compound, and 6.10 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current terminal | Connected to input rail (e.g., transformer secondary or switching node); requires PCB copper pour for thermal relief. |
| Cathode (Lead 2) | Output current terminal | Common cathode connection for dual-die configuration; electrically tied to metal tab for low-inductance return path. |
| Metal Tab (Case) | Cathode (electrically tied) | Provides primary thermal path to heatsink; must be electrically isolated from chassis unless circuit design permits common-cathode grounding. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive temperature cycling, mechanical shock, and humidity testing-enables use in engine control units and ADAS power supplies. |
| Guard ring structure | Prevents edge breakdown during voltage transients; extends reliability in 12 V/24 V battery systems subject to load dump (ISO 7637-2 Pulse 5a). |
| Dual-die configuration | Two parallel Schottky dies share current and thermal load; improves current derating margin and reduces effective RθJA vs. single-die equivalents. |
| UL Recognized (E-326243) | Meets safety standards for end-equipment certification; eliminates need for additional isolation barriers in Class II AC-DC adapters and industrial PSUs. |
| Halogen-free & RoHS compliant | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU-supports green manufacturing and export compliance. |
Applications
| Automotive DC-DC Converter | Industrial SMPS Secondary Rectifier |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V point-of-load conversion in body control modules and infotainment head units. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacing MOSFETs in CCM/DCM flyback or forward topologies. Use Value: 0.55 V VF minimizes conduction loss at 15–30 A loads, reducing heatsink size by ≥30% versus 60 V Schottky alternatives. | Use Scenario: Output rectification in 48 V input telecom and server PSUs delivering 20–60 W at 5–12 V. IC Role / Device Role / Timing Role: High-current freewheeling diode in active-clamp forward or LLC resonant converters. Use Value: 300 A IFSM rating handles startup surges without derating; 1.5 °C/W RθJC enables direct bolt-down heatsinking without thermal interface pads. |
| Monitor Power Supply | TV Backlight Inverter |
Use Scenario: Auxiliary 19 V/3.33 A supply in LCD monitor mainboard with universal AC input (90–264 VAC). IC Role / Device Role / Timing Role: Secondary-side output rectifier in quasi-resonant flyback converter. Use Value: Low IR (≤1000 µA) prevents capacitor discharge during standby, meeting Energy Star Level VI no-load power < 0.5 W. | Use Scenario: High-frequency rectification in CCFL or LED backlight inverters requiring fast recovery and low noise. IC Role / Device Role / Timing Role: Output stage rectifier in push-pull or half-bridge inverter driving cold-cathode lamps. Use Value: Guard ring suppresses EMI from dV/dt-induced edge conduction; Schottky architecture eliminates reverse recovery tail, reducing switching losses >25% vs. fast recovery diodes. |
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-30CPH04-M3 | Same 40 V VRRM, 30 A IF, TO-247AC package; VF = 0.54 V @ 15 A but lacks AEC-Q101 qualification and guard ring. | Approved for industrial/commercial use only; not validated for automotive temperature cycling or load dump immunity. | Select when AEC-Q101 is not required and lowest VF is prioritized over transient robustness. |
| ON Semiconductor MUR3040PT | 40 V VRRM, 30 A IF, TO-247AD package; VF = 0.72 V @ 15 A, higher leakage (IR ≤2000 µA), no AEC-Q101 or guard ring. | Designed for general-purpose rectification; unsuitable for automotive or low-leakage standby applications. | Choose only for cost-sensitive non-automotive designs where 0.17 V higher VF and 2× leakage are acceptable. |
Compared with VS-30CPH04-M3 and MUR3040PT, the SR3040PTH delivers superior automotive reliability via AEC-Q101 validation and guard ring protection, while maintaining best-in-class VF and leakage-making it the sole option for AEC-compliant 40 V rectification where thermal and surge margins are critical.
Availability
SR3040PTH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS secondary rectification, and monitor power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SR3040PTH 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 discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and automotive-qualified components since 1979.
The SR30xPTH series was developed specifically for AEC-Q101-compliant automotive power conversion, emphasizing ruggedness, low VF, and thermal performance in TO-247AD packaging for under-hood and body electronics.
FAQ
What is the maximum junction temperature rating for SR3040PTH?
The SR3040PTH has a maximum junction temperature (TJ max) of 125°C under continuous operation, with derating to zero current at 150°C per the forward current derating curve. This rating is validated per AEC-Q101 stress test conditions and applies to both automotive and industrial use cases where ambient temperatures remain within specification limits.
Is SR3040PTH pin-compatible with SR3040PT?
Yes, SR3040PTH is mechanically and electrically identical to SR3040PT in TO-247AD package and pinout, differing only in AEC-Q101 qualification and associated process controls. Both share identical marking code "SR3040PT", same anode/cathode lead assignments, and identical thermal and electrical specifications-making SR3040PTH a drop-in replacement where automotive qualification is required.
Does SR3040PTH have a guard ring structure?
Yes, the SR3040PTH incorporates a guard ring design explicitly stated in its features list to enhance overvoltage protection. This structure mitigates edge breakdown during fast transients such as ISO 7637-2 Pulse 5a load dump events, improving reliability in 12 V automotive systems without requiring external snubbers or clamping circuits.
What is the reverse leakage current of SR3040PTH at 100°C?
At TJ = 100°C and VR = 40 V, the SR3040PTH exhibits a maximum reverse leakage current (IR) of 20 mA per diode, as specified in the Electrical Specifications table. This value reflects worst-case behavior under elevated temperature and is critical for evaluating standby power loss in always-on automotive modules.
What packaging and taping options are available for SR3040PTH?
The SR3040PTH is supplied in TO-247AD (TO-3P) package, packed 30 units per tube. No tape-and-reel or tray options are specified in the ordering information; tube packaging supports manual and semi-automated insertion in medium-volume production and prototyping environments.
SR3040PTH 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):
- 40 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 @ 40 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AD (TO-3P)
SR3040PTH FAQ
1.How can I place an order for SR3040PTH through Aetrix?
Please submit a Request for Quotation (RFQ) for SR3040PTH 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 SR3040PTH reliable?
The price and inventory of SR3040PTH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR3040PTH is usually 5 days.
3.What payment methods are accepted for SR3040PTH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR3040PTH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR3040PTH?
SR3040PTH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR3040PTH 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 SR3040PTH?
For technical support, including SR3040PTH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR3040PTH requirements.
6.How does Aetrix verify that SR3040PTH is sourced from the original manufacturer or authorized distributors?
All SR3040PTH 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 SR3040PTH meets industry standards.
7.What is the process for return or replacement of SR3040PTH?
All SR3040PTH units undergo pre-shipment inspection (PSI). If there is an issue with SR3040PTH, 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 SR3040PTH part is unused and in its original packaging.
Return procedure for SR3040PTH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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