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Taiwan Semiconductor Corporation TST10H45C
- Part No.:
- TST10H45C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
TST10H45C.pdf
- Description:
- DIODE ARR SCHOTT 45V 5A TO-220AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,072
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Product details
Overview
TST10H45C from Taiwan Semiconductor is a dual common-cathode trench Schottky rectifier rated for 45 V repetitive peak reverse voltage, 10 A total forward current (5 A per diode), and 110 A surge capability at 8.3 ms; it delivers low forward voltage (0.47 V typ. @ 5 A, 25°C) and operates up to 150°C junction temperature in TO-220AB package for high-efficiency DC/DC conversion.
For engineers reviewing the TST10H45C datasheet, TST10H45C pinout, TST10H45C application, or TST10H45C equivalent, key selection criteria include thermal resistance (RθJC = 3.6 °C/W per diode), high-temperature reverse leakage (15 mA max @ 125°C), dual-die configuration with shared cathode, and RoHS/halogen-free compliance for industrial power supply design.
Technical Context
The TST10H45C integrates two independent Schottky die in a single TO-220AB package with common cathode connection, enabling synchronous rectification or dual-output DC/DC topologies. Its trench-based structure ensures stable VF and IR across temperature, with VF dropping to 0.38 V max @ 5 A, 125°C.
Thermal performance is defined under heatsink mounting (2" × 3" × 0.25" Al-plate), yielding RθJC = 3.6 °C/W and RθJL = 3.8 °C/W per diode - critical for sustained 10 A operation without derating below 100°C case temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - supports 36 V nominal input rails with 25% safety margin in 48 V systems |
| IF (total) | 10 A - dual-diode rating enables 5 A per channel in split-output converters |
| IFSM (8.3 ms) | 110 A - withstands inrush and transient overloads in SMPS startup |
| VF @ 5 A, 25°C | 0.47 V typ. - reduces conduction loss vs. planar Schottky (typically >0.55 V) |
| RθJC | 3.6 °C/W per diode - allows direct heatsink mounting without thermal interface pads for <10 W dissipation |
| IR @ 45 V, 125°C | 15 mA max - low leakage preserves efficiency in high-temp onboard DC/DC stages |
| Junction temp. range | –55°C to +150°C - qualified for extended industrial ambient conditions |
Pinout & Package
Package: TO-220AB, 3-terminal, insulated backside, matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker test. Mounting torque ≤ 0.56 N·m.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first Schottky diode; electrically isolated from Pin 2 and Pin 3 |
| Pin 2 (Center) | Cathode (Common) | Shared cathode node for both diodes; connected to metal tab (electrically active) |
| Pin 3 (Right) | Anode 2 | Input terminal for second Schottky diode; independent of Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Trench Schottky technology | Enables lower VF and superior high-temperature IR stability vs. planar Schottky counterparts |
| Common-cathode dual-die configuration | Reduces component count in dual-output buck or flyback converters with shared return path |
| RθJC = 3.6 °C/W per diode | Supports 10 A continuous operation with minimal heatsink area when mounted on aluminum plate |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for industrial and lighting end equipment |
Applications
| SMPS Secondary Rectification | On-board DC/DC Converter |
|---|---|
Use Scenario: High-frequency secondary-side rectification in 50–300 kHz AC/DC adapters and open-frame PSUs. IC Role / Device Role / Timing Role: Power rectifier replacing fast recovery diodes to reduce conduction loss and improve efficiency. Use Value: 0.47 V VF @ 5 A cuts diode conduction loss by ~25% vs. standard 60 V Schottky, directly increasing full-load efficiency. | Use Scenario: Output rectification in point-of-load (POL) converters on server or telecom PCBs. IC Role / Device Role / Timing Role: Dual-channel synchronous rectifier for independent 3.3 V and 5 V rails sharing ground return. Use Value: Common-cathode topology eliminates need for two discrete diodes and associated layout area, saving >12 mm² board space. |
| LED Driver Power Stage | Industrial Adapter Input Protection |
Use Scenario: Boost converter output rectification in constant-current LED drivers for street lighting. IC Role / Device Role / Timing Role: High-reliability rectifier handling 10 A pulsed loads with ambient temperatures up to 85°C. Use Value: 150°C max junction temperature and 15 mA IR @ 125°C ensure stable operation under sealed, thermally constrained housings. | Use Scenario: Input-stage freewheeling/rectification in universal-input 100–240 VAC adapters with PFC front-end. IC Role / Device Role / Timing Role: Surge-tolerant rectifier absorbing line transients and inductive kickback. Use Value: 110 A IFSM (8.3 ms) withstands EN 61000-4-5 surge events without degradation. |
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-10BQ045 | Same VRRM (45 V), same TO-220AB package, but single-diode (10 A total); RθJC = 4.0 °C/W | Requires two devices for dual-output use; higher thermal resistance limits power density | Select when only one rectification path is needed and board space permits discrete placement |
| ON Semiconductor MBR1045CT | Identical dual-common-cathode TO-220AB pinout and 45 V/10 A rating; VF = 0.55 V max @ 5 A, 25°C | Higher conduction loss reduces efficiency in high-duty-cycle applications | Choose for legacy designs where VF tolerance >0.55 V is acceptable and supply chain favors ON Semi |
Compared with VS-10BQ045 and MBR1045CT, the TST10H45C offers the lowest VF (0.47 V typ.), best thermal resistance (3.6 °C/W), and trench architecture for improved high-temperature reliability - making it optimal for space- and efficiency-constrained dual-rail DC/DC converters.
Availability
TST10H45C is available at Aetrix Electronics and suitable for switching mode power supplies, onboard DC/DC converters, and LED lighting applications requiring stable component supply and long-term industrial availability.
Supply support for TST10H45C 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability discrete devices for industrial and computing markets.
The TST10H45C belongs to TSC's trench Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in compact form factors where thermal and electrical performance are tightly coupled.
FAQ
What is the maximum junction temperature rating for the TST10H45C?
The TST10H45C has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating enables reliable operation in thermally demanding environments such as enclosed LED drivers or high-density server DC/DC modules. Derating begins above 100°C case temperature, and thermal design must respect RθJC = 3.6 °C/W per diode to maintain TJ ≤ 150°C under full 10 A load.
Is the TST10H45C pin-compatible with the MBR1045CT?
Yes, the TST10H45C is pin-compatible with the ON Semiconductor MBR1045CT: both use TO-220AB package with identical pin 1 (Anode 1), pin 2 (Common Cathode), and pin 3 (Anode 2) assignments and mechanical outline. No PCB layout change is required for drop-in replacement, though designers should verify VF and thermal performance impact in final system testing.
Does the TST10H45C meet RoHS and halogen-free requirements?
Yes, the TST10H45C complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The molding compound and lead finish (matte tin plating) are fully documented in TSC's material declarations, supporting compliance for industrial and lighting products sold in EU, Japan, and North America.
What is the typical forward voltage of the TST10H45C at 5 A and 125°C?
The typical forward voltage of the TST10H45C at 5 A and 125°C is 0.38 V, with a maximum of 0.46 V per diode. This low, temperature-stable VF - enabled by trench Schottky technology - directly improves efficiency in high-ambient-temperature applications like automotive cabin electronics or outdoor LED luminaires where junction heating is unavoidable.
How is thermal resistance measured for the TST10H45C, and what mounting condition applies?
TSC specifies RθJC = 3.6 °C/W per diode for the TST10H45C under standardized mounting: soldered to a 2" × 3" × 0.25" aluminum heatsink plate. This value reflects junction-to-case conduction only and assumes full metal-tab contact with no thermal interface material. For accurate system-level thermal modeling, designers must account for additional RθCA introduced by heatsink fin geometry and airflow.
TST10H45C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 580 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 20 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
TST10H45C FAQ
1.How can I place an order for TST10H45C through Aetrix?
Please submit a Request for Quotation (RFQ) for TST10H45C 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 TST10H45C reliable?
The price and inventory of TST10H45C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TST10H45C is usually 5 days.
3.What payment methods are accepted for TST10H45C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TST10H45C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TST10H45C?
TST10H45C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TST10H45C 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 TST10H45C?
For technical support, including TST10H45C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TST10H45C requirements.
6.How does Aetrix verify that TST10H45C is sourced from the original manufacturer or authorized distributors?
All TST10H45C 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 TST10H45C meets industry standards.
7.What is the process for return or replacement of TST10H45C?
All TST10H45C units undergo pre-shipment inspection (PSI). If there is an issue with TST10H45C, 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 TST10H45C part is unused and in its original packaging.
Return procedure for TST10H45C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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