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Taiwan Semiconductor Corporation SRS2040H
- Part No.:
- SRS2040H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SRS2040H.pdf
- Description:
- DIODE ARR SCHOTT 40V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,844
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Product details
Overview
SRS2040H from Taiwan Semiconductor is a 20A, 40V AEC-Q101-qualified Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring 0.55V forward voltage at 10A/25°C, 200A surge capability, and guard ring overvoltage protection-used as freewheeling diode in automotive DC/DC converters.
For engineers reviewing the SRS2040H datasheet, SRS2040H pinout, SRS2040H application, or SRS2040H 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), moisture sensitivity level (J-STD-020 Level 1), and dual-die configuration for parallel current handling.
Technical Context
This Schottky rectifier uses dual silicon dies in a single TO-263AB package to support high-current operation while maintaining low conduction loss. Its guard ring structure enhances ruggedness against transient overvoltage events common in automotive load-dump conditions.
The device operates with a maximum junction temperature of 125°C (derated above 25°C ambient), exhibits 500 µA reverse leakage at 25°C and rated VR, and delivers stable performance under 8.3ms half-sine surge pulses up to 200A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in reverse-biased freewheeling or reverse-battery protection circuits. |
| IF | 20 A - Continuous average forward current; supports high-power DC/DC stages without external heatsinking at moderate ambient temperatures. |
| IFSM | 200 A - Non-repetitive surge current capacity; withstands inrush and fault transients in automotive power rails. |
| VF @ 10A, 25°C | 0.55 V - Low forward drop reduces conduction losses and improves system efficiency in low-voltage, high-frequency switching topologies. |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case; enables direct mounting to PCB copper or heatsink for effective thermal management. |
| TJ max | 125 °C - Maximum allowable junction temperature; aligns with AEC-Q101 Grade 2 requirements for under-hood automotive applications. |
| MSL | Level 1 (J-STD-020) - No floor life limitation or bake requirement before reflow; simplifies SMT assembly logistics. |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, 3-terminal configuration with anode-cathode-anode layout (dual common-cathode die structure). Cathode tab is electrically connected to pin 2 and thermally exposed on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first Schottky die; used in dual-path or interleaved converter designs. |
| Pin 2 (Center Tab) | Cathode (Common) | Shared cathode connection for both dies; large metal tab provides primary thermal path and low-inductance return. |
| Pin 3 (Right) | Anode 2 | Input terminal for second Schottky die; enables balanced current sharing when paralleled externally or used in dual-phase layouts. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Guard ring overvoltage protection | Integrated edge termination structure prevents premature avalanche breakdown during load dump or inductive kick events. |
| Dual-die configuration | Two independent Schottky junctions share one cathode; allows higher total current handling without increasing VF per path. |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and eliminates whisker growth risk per JESD201 Class 2. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive; suitable for environmentally regulated automotive supply chains. |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion in 12V–48V hybrid vehicle architectures with high switching frequency (>200 kHz). IC Role / Device Role / Timing Role: Freewheeling rectifier replacing synchronous MOSFETs where simplicity and robustness outweigh marginal efficiency gains. Use Value: 0.55 V VF minimizes conduction loss at 20 A, while 200 A IFSM handles cold-crank surges without derating. | Use Scenario: Input protection circuitry in infotainment head units and ADAS domain controllers. IC Role / Device Role / Timing Role: Series-connected reverse-polarity blocking element placed upstream of PMIC input. Use Value: 40 V VRRM exceeds automotive battery clamp levels; guard ring ensures survivability during jump-start transients. |
| LED Headlamp Drivers | Industrial UPS Hold-up Circuits |
Use Scenario: Constant-current LED driver output stage in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: Output rectifier in buck-derived constant-current topology operating at 100–500 kHz. Use Value: Low VF and 125°C TJ max allow compact thermal design in sealed lamp housings with limited airflow. | Use Scenario: Energy recirculation path in 24V industrial UPS during AC failure and battery switchover. IC Role / Device Role / Timing Role: Bidirectional freewheeling path enabling seamless transition between line and battery modes. Use Value: Dual-die layout supports redundant current paths; MSL Level 1 ensures compatibility with high-volume automated manufacturing. |
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-20CPH04-M3 | Same 40 V VRRM, 20 A IF, TO-263AB package; VF = 0.57 V @ 10 A, RθJC = 1.6 °C/W. | Identical AEC-Q101 qualification; slightly higher thermal resistance limits power density in constrained layouts. | Preferred where Vishay's qualification documentation or long-term supply agreement is mandated. |
| ON Semiconductor MUR2040CT | 40 V VRRM, 20 A IF, TO-263AB; but fast recovery (not Schottky); VF = 1.1 V @ 10 A, higher switching loss. | Not suitable for high-frequency DC/DC; acceptable only in low-frequency (<50 kHz), cost-sensitive industrial supplies. | Select only if Schottky-specific advantages (low VF, zero Qrr) are not required and legacy fast-recovery sourcing exists. |
Compared with SRS2040H, VS-20CPH04-M3 offers nearly identical performance with minor thermal trade-offs, while MUR2040CT sacrifices efficiency for ruggedness in non-Schottky applications-making SRS2040H optimal for automotive-grade, high-efficiency freewheeling where low VF and AEC-Q101 compliance are mandatory.
Availability
SRS2040H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and LED headlamp drivers requiring stable component supply across extended production lifecycles.
Supply support for SRS2040H 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and computing markets since 1979.
The SRS20xxH series belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-current, low-VF operation in automotive power conversion and protection systems.
FAQ
What is the maximum junction temperature rating for the SRS2040H?
The SRS2040H has a maximum junction temperature (TJ max) of +125°C under continuous operation. This rating is specified in the Absolute Maximum Ratings table and applies across its full operating range. Derating begins above 25°C ambient, and the device maintains reliable operation up to this limit when thermal design adheres to the 1.5 °C/W RθJC specification. The SRS2040H datasheet confirms this value is validated per AEC-Q101 Grade 2 requirements.
Is the SRS2040H suitable for reverse battery protection in 12V automotive systems?
Yes, the SRS2040H is well-suited for reverse battery protection in 12V automotive systems. Its 40 V VRRM exceeds typical automotive clamp voltages (up to ~36 V during load dump), and its guard ring structure enhances ruggedness against transient overvoltage. With 0.55 V forward voltage at 10 A, it minimizes insertion loss while supporting full 20 A system current. The SRS2040H is AEC-Q101 qualified, confirming suitability for under-hood environments.
Does the SRS2040H have a common-cathode or common-anode configuration?
The SRS2040H features a common-cathode configuration with dual anodes (Pin 1 and Pin 3) and a shared cathode (Pin 2, the center tab). This is confirmed by the mechanical drawing, marking diagram, and electrical specifications showing two independent forward voltage curves referenced to the same cathode node. The dual-die layout enables balanced current sharing in multi-phase or redundancy-critical applications.
What is the moisture sensitivity level (MSL) of the SRS2040H?
The SRS2040H has a moisture sensitivity level (MSL) of Level 1 per J-STD-020. This means the device has no floor life limitation and does not require dry pack or baking prior to surface-mount reflow. It is fully compatible with standard lead-free reflow profiles and supports high-throughput automated assembly without special handling precautions-confirmed in the Mechanical Data section of the official Taiwan Semiconductor datasheet for SRS2020H–SRS20150H.
How does the SRS2040H compare to the SRS2060H in terms of forward voltage and leakage?
The SRS2040H has a typical forward voltage (VF) of 0.55 V at 10 A and 25°C, whereas the SRS2060H is rated at 0.70 V under identical conditions-reflecting higher barrier height for higher VRRM. At 25°C and rated VR, both exhibit ≤500 µA reverse leakage, but at 100°C, SRS2040H shows ≤15 mA versus ≤10 mA for SRS2060H. These differences are documented in the Electrical Specifications table of the SRS2020H–SRS20150H datasheet.
SRS2040H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SRS2040H FAQ
1.How can I place an order for SRS2040H through Aetrix?
Please submit a Request for Quotation (RFQ) for SRS2040H 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 SRS2040H reliable?
The price and inventory of SRS2040H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRS2040H is usually 5 days.
3.What payment methods are accepted for SRS2040H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRS2040H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRS2040H?
SRS2040H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRS2040H 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 SRS2040H?
For technical support, including SRS2040H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRS2040H requirements.
6.How does Aetrix verify that SRS2040H is sourced from the original manufacturer or authorized distributors?
All SRS2040H 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 SRS2040H meets industry standards.
7.What is the process for return or replacement of SRS2040H?
All SRS2040H units undergo pre-shipment inspection (PSI). If there is an issue with SRS2040H, 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 SRS2040H part is unused and in its original packaging.
Return procedure for SRS2040H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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