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Taiwan Semiconductor Corporation TST30H45C
- Part No.:
- TST30H45C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
TST30H45C.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,203
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Product details
Overview
TST30H45C from Taiwan Semiconductor is a dual common cathode trench Schottky rectifier rated for 30 A total forward current (15 A per diode), 45 V repetitive peak reverse voltage, and 150 °C maximum junction temperature, optimized for high-efficiency DC/DC conversion in compact power supplies.
For engineers reviewing the TST30H45C datasheet, TST30H45C pinout, TST30H45C application, or TST30H45C equivalent, key selection factors include its low VF (0.49 V typ. @ 15 A, 25 °C), high IFSM (250 A @ 8.3 ms), TO-220AB thermal performance (RθJC = 2.0 °C/W per diode), and dual-die common-cathode configuration for synchronous rectification or dual-output SMPS.
Technical Context
The TST30H45C integrates two independent Schottky die in a single TO-220AB package with shared cathode terminal, enabling dual-channel rectification without external parallel wiring. Its trench-based Schottky structure delivers lower forward voltage and superior high-temperature leakage stability versus planar Schottky diodes.
Thermal design is supported by low junction-to-case resistance (2.0 °C/W per diode) when mounted on an aluminum heatsink (2" × 3" × 0.25"), and its 250 A surge rating allows robust handling of inrush and transient overloads in switching converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (total) | 30 A - Total continuous forward current across both diodes; supports dual-rail or interleaved output designs. |
| VRRM | 45 V - Maximum repetitive reverse voltage per diode; suitable for 36 V nominal bus systems with margin. |
| VF @ 15 A, 25 °C | 0.49 V (typ), 0.61 V (max) - Low conduction loss enables >95% efficiency in 12–24 V output DC/DC stages. |
| IFSM (8.3 ms) | 250 A - Single half-sine surge capability ensures reliability during cold-start or short-circuit recovery. |
| RθJC | 2.0 °C/W per diode - Enables direct heatsink mounting for thermal management without additional thermal interface layers. |
| IR @ 45 V, 125 °C | 84 mA - Controlled reverse leakage maintains efficiency at elevated ambient temperatures in enclosed adapters. |
| TJ max | 150 °C - Extended junction rating allows operation in thermally constrained industrial or automotive under-hood environments. |
Pinout & Package
Package: TO-220AB - Insulated case with matte tin-plated leads, UL 94V-0 molding compound, and polarity marking per device top-side silkscreen.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | First diode anode | Independent input for first rectification path; electrically isolated from A2. |
| Anode 2 (A2) | Second diode anode | Independent input for second rectification path; enables dual-output or phase-split topology. |
| Cathode (K) | Common cathode node | Shared output node for both diodes; simplifies PCB layout and reduces return path inductance. |
| Tab (Case) | Electrically connected to cathode | Provides low-inductance thermal and electrical path to heatsink; must be isolated if cathode is not chassis-ground referenced. |
Key Features
| Feature | Design Value |
|---|---|
| Trench Schottky technology | Reduces VF by ~15% vs. planar Schottky at 15 A, directly lowering conduction loss and thermal load. |
| High-temperature IR stability | Leakage remains ≤84 mA at 125 °C and full VR, preserving efficiency in hot environments. |
| 250 A surge rating (8.3 ms) | Withstands repeated inrush events in AC/DC adapters without degradation, extending product lifetime. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and global environmental regulations for consumer and industrial end equipment. |
| TO-220AB mechanical robustness | Rated for 0.56 N·m mounting torque and JESD201 Class 2 whisker resistance, ensuring long-term solder joint integrity. |
Applications
| Switching Mode Power Supply (SMPS) | On-Board DC/DC Converter |
|---|---|
Use Scenario: Primary-side synchronous rectification in 36 V input, dual-output 12 V/5 V telecom power modules. IC Role / Device Role / Timing Role: Dual common-cathode Schottky rectifier providing low-loss, fast-recovery output rectification for both rails. Use Value: Reduces total conduction loss by 1.8 W vs. single-diode solutions, lowering heatsink requirements and improving power density. | Use Scenario: Secondary-side rectification in automotive infotainment DC/DC converters operating up to 105 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable dual rectifier delivering regulated 3.3 V and 5 V from 12 V battery rail. Use Value: Maintains <0.48 V VF at 125 °C, minimizing voltage drop and thermal runaway risk in sealed enclosures. |
| AC/DC Adapter | LED Lighting Driver |
Use Scenario: Output rectification in 65 W laptop adapters with active clamp flyback topology. IC Role / Device Role / Timing Role: Dual-anode, common-cathode configuration supports interleaved secondary winding or redundancy. Use Value: Enables 92% average efficiency across universal AC input range while meeting CoC Tier 2 no-load power limits. | Use Scenario: Constant-current rectification stage in outdoor LED streetlight drivers exposed to 85 °C ambient. IC Role / Device Role / Timing Role: High-surge-capable Schottky handling LED string turn-on transients and lightning-induced surges. Use Value: 250 A IFSM withstands 10× rated current surges without parametric shift, eliminating need for external TVS clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual common cathode Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH045 | Same 45 V VRRM, 30 A IF, but planar Schottky; VF = 0.57 V (max) @ 15 A, 25 °C - higher conduction loss. | Limited to lower-temperature environments due to higher IR drift above 100 °C. | Prefer TST30H45C where thermal headroom or efficiency >94% is required. |
| ON Semiconductor MBR3045CT | Identical TO-220AB package and pinout; VF = 0.59 V (max) @ 15 A, 25 °C; RθJC = 2.5 °C/W - 25% higher thermal resistance. | Requires larger heatsink area or forced air for same power dissipation. | Choose TST30H45C for space-constrained designs needing minimal thermal interface overhead. |
Compared with VS-30CPH045 and MBR3045CT, the TST30H45C delivers lower VF, better high-temperature leakage control, and superior thermal resistance - making it optimal for high-density, high-efficiency, and thermally demanding SMPS and DC/DC applications where thermal margin and conduction loss are critical.
Availability
TST30H45C is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and LED lighting drivers requiring stable component supply, consistent thermal performance, and long-term industrial lifecycle support.
Supply support for TST30H45C 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 discrete manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.
The TST30H45C belongs to TSC's high-current trench Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact, thermally constrained power conversion systems.
FAQ
What is the pin configuration of the TST30H45C?
The TST30H45C uses a three-terminal TO-220AB package with Anode 1, Anode 2, and a shared Cathode (K) terminal. The metal tab is electrically connected to the cathode. Pinout is standardized per JEDEC TO-220AB outline, with A1 and A2 on the left and right leads respectively, and K on the center lead - confirmed in TSC's official package drawing C2012.
Does the TST30H45C support surface-mount assembly?
No, the TST30H45C is through-hole only, packaged in TO-220AB with leads designed for axial insertion and soldering. It does not have a surface-mount variant; alternative SMD packages like D2PAK would require redesign and are not pin-compatible with the TST30H45C.
What is the maximum allowable mounting torque for the TST30H45C heatsink screw?
The maximum recommended mounting torque for the TST30H45C heatsink screw is 0.56 N·m, as specified in the Mechanical Data section of the official TSC datasheet. Exceeding this value risks cracking the molded case or damaging internal wire bonds.
How does the TST30H45C perform at elevated junction temperatures?
The TST30H45C maintains VF = 0.42 V (typ) and IR = 84 mA (max) at TJ = 125 °C and rated conditions. Its trench Schottky architecture ensures stable forward voltage and controlled leakage up to 150 °C, supporting reliable operation in thermally aggressive environments where standard Schottkys degrade.
Is the TST30H45C halogen-free and RoHS compliant?
Yes, the TST30H45C is both RoHS compliant and halogen-free per IEC 61249-2-21, using molding compound and plating materials that meet global environmental standards - verified in TSC's official compliance documentation for version C2012.
TST30H45C 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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 610 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 94 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
TST30H45C FAQ
1.How can I place an order for TST30H45C through Aetrix?
Please submit a Request for Quotation (RFQ) for TST30H45C 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 TST30H45C reliable?
The price and inventory of TST30H45C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TST30H45C is usually 5 days.
3.What payment methods are accepted for TST30H45C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TST30H45C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TST30H45C?
TST30H45C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TST30H45C 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 TST30H45C?
For technical support, including TST30H45C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TST30H45C requirements.
6.How does Aetrix verify that TST30H45C is sourced from the original manufacturer or authorized distributors?
All TST30H45C 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 TST30H45C meets industry standards.
7.What is the process for return or replacement of TST30H45C?
All TST30H45C units undergo pre-shipment inspection (PSI). If there is an issue with TST30H45C, 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 TST30H45C part is unused and in its original packaging.
Return procedure for TST30H45C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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