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Taiwan Semiconductor Corporation SRAS2050HMNG
- Part No.:
- SRAS2050HMNG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SRAS2050HMNG.pdf
- Description:
- DIODE SCHOTTKY 50V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,938
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Product details
Overview
SRAS2050HMNG from Taiwan Semiconductor is a 20A, 50V Schottky barrier rectifier in TO-263AB (D2PAK) package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.70 V at 20 A, 25°C) and high surge capability (330 A). It serves as the primary output rectifier in compact, high-frequency switching power supplies.
For engineers reviewing the SRAS2050HMNG datasheet, SRAS2050HMNG pinout, SRAS2050HMNG application, or SRAS2050HMNG equivalent, key selection criteria include its 50 V repetitive peak reverse voltage, 1.5 °C/W junction-to-case thermal resistance, moisture sensitivity level 1 rating, and compatibility with automated SMT placement on high-density PCBs.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its low VF enables reduced conduction loss in 100–500 kHz SMPS topologies, while the 330 A IFSM rating supports robust startup and transient handling.
The device operates across –55°C to +150°C junction temperature range and achieves 150°C maximum TJ with RθJC = 1.5 °C/W - enabling direct heatsink mounting in thermally constrained adapters and industrial DC/DC modules without auxiliary thermal interface materials.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating margin in 36–48 V output rails. |
| IF | 20 A continuous - Rated average forward current at TC = 110°C; supports sustained 200–300 W output power. |
| VF @ 20 A, 25°C | 0.70 V max - Low conduction loss reduces heat generation and improves efficiency above 92% in 12 V–48 V outputs. |
| IFSM | 330 A (8.3 ms half-sine) - Withstands inrush and short-circuit surges without bond wire failure. |
| RθJC | 1.5 °C/W - Enables direct case-to-heatsink thermal path; allows >15 W dissipation with ≤22.5°C rise at 20 A. |
| IR @ 50 V, 25°C | 500 µA max - Low leakage preserves light-load efficiency and prevents unintended discharge in hold-up circuits. |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, single-anode/single-cathode configuration with exposed cathode tab for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Input terminal for forward current flow | Connected to switching node (e.g., MOSFET drain); requires low-inductance layout to minimize ringing. |
| Cathode (Tab + Lead 3) | Output terminal and thermal path | Electrically and thermally tied to PCB copper pour or heatsink; carries full 20 A load current and dissipates heat directly. |
| NC (Lead 1) | No internal connection | Unused lead; may be omitted or left unconnected per board layout - no functional role in circuit operation. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown under transient overvoltage, improving reliability in unregulated input conditions. |
| Moisture sensitivity level 1 | Eliminates bake requirement before reflow; compatible with standard J-STD-020 assembly processes. |
| Halogen-free molding compound | Meets IEC 61249-2-21; supports RoHS-compliant and environmentally regulated end equipment. |
| Matte tin-plated leads | Ensures consistent wetting and joint integrity during lead-free reflow (SAC305), per J-STD-002. |
Applications
| Server VRM Output Rectification | Industrial DC/DC Converter |
|---|---|
Use Scenario: High-current, low-voltage output stage of 48 V–12 V buck converter in datacenter server power delivery networks. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacement; conducts continuous 20 A load current with minimal conduction loss. Use Value: 0.70 V VF reduces power loss by ~1.4 W vs. higher-VF alternatives, lowering thermal stress on adjacent MOSFETs and magnetics. | Use Scenario: Secondary-side rectification in isolated 24 V input, 5 V/15 A industrial DC/DC module with wide ambient temperature range. IC Role / Device Role / Timing Role: Unidirectional current path in forward or flyback topology; handles full load current and line transients. Use Value: 330 A IFSM withstands 10× overload for 8.3 ms, supporting EN 61000-4-5 surge immunity without derating. |
| USB-C PD Adapter | Telecom Power Shelf |
Use Scenario: Compact 65 W USB-C power adapter operating at 200–300 kHz with tight size constraints. IC Role / Device Role / Timing Role: Output rectifier in active-clamp forward or LLC resonant converter secondary side. Use Value: TO-263AB package provides 1.7 g mass and 1.5 °C/W RθJC - enables passive cooling without fan, meeting UL 62368-1 thermal limits. | Use Scenario: Distributed 48 V to ±15 V/±5 V conversion in telecom base station power shelves with -40°C to +85°C operating range. IC Role / Device Role / Timing Role: High-reliability rectifier in redundant DC/DC stages where leakage and surge robustness are critical. Use Value: 500 µA IR at 50 V and 25°C minimizes standby power loss; guard ring ensures stable operation under lightning-induced transients. |
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-20CPH05-M3 | Same 50 V VRRM, 20 A IF, TO-263AB package; VF = 0.69 V typ at 20 A, but IR = 1.0 mA max at 50 V - 2× higher leakage. | Higher IR may impact light-load efficiency in battery-backed systems; otherwise functionally interchangeable in SMPS. | Preferred where lowest VF is prioritized and leakage is not critical. |
| ON Semiconductor MBR2050CT | TO-220AB package (not D2PAK); dual-diode center-tap configuration; VF = 0.75 V max - higher conduction loss. | Requires different footprint and thermal design; unsuitable for space-constrained SMT layouts. | Select only if through-hole assembly is mandated or dual-diode topology is required. |
Compared with VS-20CPH05-M3, SRAS2050HMNG offers lower leakage for standby-sensitive designs; versus MBR2050CT, it delivers superior thermal performance and SMT compatibility - making it optimal for high-density, high-reliability DC/DC converters.
Availability
SRAS2050HMNG is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C PD adapters, and industrial DC/DC converters requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SRAS2050HMNG 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 diodes, and MOSFETs for industrial and computing applications.
The SRAS20xx series was designed specifically for high-current, medium-voltage Schottky rectification in compact, high-frequency power converters - emphasizing thermal efficiency, surge robustness, and automated assembly readiness.
FAQ
What is the maximum junction temperature rating for SRAS2050HMNG?
The SRAS2050HMNG has a maximum junction temperature (TJ MAX) of +150°C, verified per absolute maximum ratings in the official TSC datasheet. This rating applies under continuous operation with proper heatsinking and accounts for thermal derating curves shown in Figure 1. Operation beyond this limit risks irreversible degradation of the Schottky junction. The SRAS2050HMNG must be mounted to maintain junction temperature ≤150°C under worst-case load and ambient conditions.
Is SRAS2050HMNG suitable for lead-free reflow soldering?
Yes, SRAS2050HMNG is qualified for lead-free reflow soldering per J-STD-020, with moisture sensitivity level (MSL) 1 - meaning it can be stored indefinitely at ≤30°C/60% RH and placed directly into reflow without baking. Its matte tin-plated leads meet J-STD-002 requirements for solderability using SAC305 alloy, and the TO-263AB package withstands peak reflow temperatures up to 260°C for 30 seconds.
Does SRAS2050HMNG have a guard ring, and what is its purpose?
Yes, SRAS2050HMNG incorporates a guard ring structure, explicitly listed under FEATURES in the TSC datasheet. This design mitigates edge electric field concentration, preventing premature avalanche breakdown during voltage transients. In practice, the guard ring enhances reliability in SMPS applications subject to line surges or inductive kickback, allowing the SRAS2050HMNG to sustain rated VRRM without degradation under real-world overvoltage events.
What is the reverse leakage current specification for SRAS2050HMNG at 100°C?
At TJ = 100°C and VR = 50 V, the SRAS2050HMNG exhibits a maximum reverse leakage current (IR) of 10 mA, as specified in the ELECTRICAL SPECIFICATIONS table. This value is measured under pulse test conditions (PW = 30 ms) and reflects typical behavior for high-current Schottky devices at elevated temperature. Designers should account for this leakage when calculating standby power in always-on systems.
Can SRAS2050HMNG be used as a direct replacement for SRAS2040HMNG in an existing design?
SRAS2050HMNG can replace SRAS2040HMNG only if the circuit's reverse voltage stress remains ≤50 V - since SRAS2050HMNG has a higher VRRM (50 V vs. 40 V) but identical IF, VF, and package. However, VF increases slightly (0.70 V vs. 0.57 V), raising conduction loss by ~0.26 W at 20 A. Thermal and layout compatibility is maintained, but efficiency and temperature rise must be re-verified. The SRAS2050HMNG is not a drop-in replacement unless the design margin accommodates both the voltage upgrade and VF increase.
SRAS2050HMNG 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
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SRAS2050HMNG FAQ
1.How can I place an order for SRAS2050HMNG through Aetrix?
Please submit a Request for Quotation (RFQ) for SRAS2050HMNG 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 SRAS2050HMNG reliable?
The price and inventory of SRAS2050HMNG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS2050HMNG is usually 5 days.
3.What payment methods are accepted for SRAS2050HMNG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS2050HMNG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRAS2050HMNG?
SRAS2050HMNG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRAS2050HMNG 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 SRAS2050HMNG?
For technical support, including SRAS2050HMNG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS2050HMNG requirements.
6.How does Aetrix verify that SRAS2050HMNG is sourced from the original manufacturer or authorized distributors?
All SRAS2050HMNG 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 SRAS2050HMNG meets industry standards.
7.What is the process for return or replacement of SRAS2050HMNG?
All SRAS2050HMNG units undergo pre-shipment inspection (PSI). If there is an issue with SRAS2050HMNG, 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 SRAS2050HMNG part is unused and in its original packaging.
Return procedure for SRAS2050HMNG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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