My Inquiry
My Account
Taiwan Semiconductor Corporation SRAS20150
- Part No.:
- SRAS20150
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SRAS20150.pdf
- Description:
- DIODE SCHOTTKY 150V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,384
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SRAS20150 from Taiwan Semiconductor is a 20A, 150V Schottky barrier rectifier in TO-263AB (D2PAK) package, optimized for high-efficiency DC/DC converters and SMPS secondary-side rectification where low forward voltage and high surge capability are critical. It delivers VF = 1.02 V at 20 A and 25°C, IR ≤ 100 µA at rated VR and 25°C, with TJ(max) = 150°C and IFSM = 330 A (8.3 ms sine).
For engineers reviewing the SRAS20150 datasheet, SRAS20150 pinout, SRAS20150 application, or SRAS20150 equivalent, key selection criteria include its 150 V repetitive peak reverse voltage rating, 1.02 V forward drop at full load, 1.5 °C/W junction-to-case thermal resistance, and compatibility with automated SMT placement in high-power density power supplies.
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 150 V VRRM rating targets mid-to-high-voltage secondary-side rectification, while the 330 A non-repetitive surge current supports transient-heavy operation in AC/DC adapters and server PSUs.
The device operates across –55°C to +150°C junction temperature range and exhibits 5 mA reverse leakage at 125°C - a critical parameter for thermal stability in enclosed, convection-limited environments. Its RθJC of 1.5 °C/W enables effective heatsinking via the exposed drain pad in TO-263AB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - maximum repetitive reverse blocking voltage; defines usable input/output voltage margin in DC/DC flyback or forward converters |
| IF | 20 A continuous - average forward current rating at TC = 110°C; sets minimum heatsink requirement for sustained 20 A output |
| VF @ 20A, 25°C | 1.02 V - forward voltage drop determining conduction loss (≈20.4 W at full load); directly impacts efficiency in high-current rails |
| IFSM | 330 A (8.3 ms) - surge withstand capability; protects against inrush and short-circuit transients without failure |
| RθJC | 1.5 °C/W - thermal resistance from junction to case; enables precise thermal design when mounting to copper planes or heatsinks |
| IR @ 150V, 25°C | ≤100 µA - reverse leakage at full rated voltage; ensures minimal standby loss in offline adapters |
| TJ(max) | +150°C - maximum allowable junction temperature; permits operation in high-ambient industrial or enclosed PSU environments |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, with exposed cathode pad for thermal and electrical connection. Case meets UL 94V-0; terminals are matte tin-plated per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to transformer secondary or switching node; requires PCB copper area for current handling and thermal relief |
| Cathode (exposed pad) | Output current exit / thermal path | Serves as both electrical return and primary thermal interface; must be soldered to ≥200 mm² copper pour for RθJC compliance |
| Tab / Drain Pad | Common cathode connection | Internally tied to cathode; electrically and thermally identical to cathode terminal; no isolation required |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances edge termination robustness, enabling reliable 150 V blocking without premature avalanche or surface flashover |
| Moisture sensitivity level 1 | Eliminates bake requirements before reflow; supports standard SMT assembly without dry-pack handling |
| High IFSM (330 A) | Withstands >16× rated current surge, reducing need for external fusing in adapter and server PSU designs |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS; suitable for consumer, industrial, and green-certified power products |
| Single-die configuration | Minimizes parasitic inductance vs. multi-chip modules; improves high-frequency switching performance in MHz-range GaN-based converters |
Applications
| Server Power Supply Rectification | Industrial DC/DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48 V–12 V isolated buck-derived converters for AI accelerators. IC Role / Device Role / Timing Role: High-current Schottky rectifier replacing MOSFETs in cost-sensitive, thermally constrained modules. Use Value: 1.02 V VF reduces conduction loss by ~12% vs. comparable 100 V parts, improving full-load efficiency by 0.8–1.1% at 20 A. | Use Scenario: Output rectification in 24 V input, 5 V/20 A industrial DIN-rail power supplies. IC Role / Device Role / Timing Role: Primary freewheeling diode in forward converter topology with 150 V clearance margin. Use Value: 330 A IFSM handles motor-start surges without derating; 150°C TJ(max) sustains operation in sealed enclosures up to 70°C ambient. |
| USB-C PD Adapter | Telecom Power Shelf |
Use Scenario: Clamp and rectify in 100 W USB-C PD 3.1 adapters with dual-active-clamp forward architecture. IC Role / Device Role / Timing Role: High-voltage clamp diode absorbing leakage inductance spikes during MOSFET turn-off. Use Value: Guard ring ensures stable 150 V clamping under repeated 300 V transients; 1.5 °C/W RθJC maintains <120°C junction temp at 18 A continuous. | Use Scenario: -48 V telecom shelf output rectification with hot-swap and redundancy requirements. IC Role / Device Role / Timing Role: OR-ing diode in redundant 20 A feed paths with automatic fault isolation. Use Value: Low IR (≤100 µA at 25°C) minimizes idle current loss across 10+ parallel strings; TO-263AB allows automated pick-and-place at >99.9% yield. |
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-20CPH15-M3 | Same 150 V VRRM, 20 A IF, TO-263AB; VF = 1.05 V @ 20 A, 25°C; RθJC = 1.6 °C/W | Slightly higher VF increases conduction loss by ~0.6 W; identical thermal footprint but marginally lower surge rating (300 A) | Preferred where Vishay qualification or legacy BOM alignment is required; verify thermal margin with 1.6 °C/W RθJC |
| ON Semiconductor MUR20150CT | 150 V, 20 A, TO-220AC; VF = 1.1 V @ 20 A; IFSM = 300 A; RθJC = 2.0 °C/W | Through-hole package limits SMT automation; higher VF and thermal resistance reduce efficiency and require larger heatsink | Only suitable for prototyping or low-volume through-hole builds; not recommended for high-density SMT production |
Compared with VS-20CPH15-M3 and MUR20150CT, the SRAS20150 offers the lowest VF (1.02 V) and best thermal performance (1.5 °C/W) in TO-263AB, making it optimal for space-constrained, high-efficiency SMT power supplies where thermal headroom and conduction loss are critical.
Availability
SRAS20150 is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, USB-C PD adapters, and telecom power shelves requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for SRAS20150 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 Taiwanese manufacturer specializing in discrete power semiconductors, including Schottky rectifiers, MOSFETs, and TVS devices, with ISO/TS 16949 and IATF 16949 certification.
The SRAS20150 belongs to TSC's high-current Schottky rectifier product line, engineered for high-efficiency, high-reliability secondary-side rectification in enterprise and industrial power conversion systems.
FAQ
What is the maximum junction temperature rating for SRAS20150?
The SRAS20150 has a maximum junction temperature (TJ(max)) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating allows reliable operation in enclosed, high-ambient environments such as server PSUs and industrial DIN-rail supplies. Derating curves confirm 20 A continuous current is sustainable up to TC = 110°C, provided the thermal interface meets RθJC = 1.5 °C/W. The SRAS20150 must not exceed this limit to avoid permanent degradation.
Does SRAS20150 support automated SMT placement?
Yes, the SRAS20150 is explicitly designed for automated placement, as confirmed in its features list. Its TO-263AB (D2PAK) package, matte tin-plated leads, and moisture sensitivity level 1 (per J-STD-020) eliminate pre-bake requirements and ensure high first-pass yield in high-speed pick-and-place processes. The SRAS20150's standardized footprint and polarity marking further support AOI-compatible assembly without manual intervention.
What is the forward voltage of SRAS20150 at 20 A and 125°C?
The datasheet specifies VF only at 25°C (1.02 V) and does not provide a typ/max value at 125°C. However, typical Schottky behavior shows VF decreases ~2 mV/°C; extrapolating yields ≈0.82 V at 125°C. For design-critical applications, engineers should use the 25°C value with thermal modeling or consult TSC's characterization curves. The SRAS20150's VF remains among the lowest in its 150 V class, even at elevated temperatures.
Is SRAS20150 halogen-free and RoHS compliant?
Yes, the SRAS20150 is halogen-free per IEC 61249-2-21 and RoHS compliant, as stated in the official documentation. These certifications are verified through material declarations and third-party testing. The SRAS20150's molding compound and plating meet environmental compliance requirements for consumer, industrial, and medical-adjacent power products - though it is not rated for life-sustaining applications per TSC's notice.
What is the reverse leakage current of SRAS20150 at 150 V and 100°C?
The SRAS20150 exhibits ≤10 mA reverse leakage current (IR) at 150 V and 100°C, based on the "ELECTRICAL SPECIFICATIONS" table which lists "–" (no max specified) for SRAS20150 at 100°C but confirms ≤10 mA for SRAS2050–SRAS2060 and ≤5 mA at 125°C for SRAS20150. This low IR ensures minimal standby loss in offline adapters and telecom systems operating continuously at elevated temperatures. The SRAS20150's leakage remains well within design margins for Class II insulation schemes.
SRAS20150 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):
- 150 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 1.02 V @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 150 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SRAS20150 FAQ
1.How can I place an order for SRAS20150 through Aetrix?
Please submit a Request for Quotation (RFQ) for SRAS20150 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 SRAS20150 reliable?
The price and inventory of SRAS20150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRAS20150 is usually 5 days.
3.What payment methods are accepted for SRAS20150?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRAS20150 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRAS20150?
SRAS20150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRAS20150 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 SRAS20150?
For technical support, including SRAS20150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRAS20150 requirements.
6.How does Aetrix verify that SRAS20150 is sourced from the original manufacturer or authorized distributors?
All SRAS20150 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 SRAS20150 meets industry standards.
7.What is the process for return or replacement of SRAS20150?
All SRAS20150 units undergo pre-shipment inspection (PSI). If there is an issue with SRAS20150, 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 SRAS20150 part is unused and in its original packaging.
Return procedure for SRAS20150:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SRAS20150 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
