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Taiwan Semiconductor Corporation TSU2M45H
- Part No.:
- TSU2M45H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
TSU2M45H.pdf
- Description:
- 2A, 45V, TRENCH SCHOTTKY
- Quantity:
- Payment:
- Shipping:
Inventory:11,844
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Product details
Overview
TSU2M45H from Taiwan Semiconductor is a 2 A, 45 V Trench Schottky surface-mount rectifier in Micro SMA package, featuring low forward voltage (0.59 V at 2 A, 25°C), 30 A surge rating, and AEC-Q101 qualification for automotive use.
For engineers reviewing the TSU2M45H datasheet, TSU2M45H pinout, TSU2M45H application, or TSU2M45H equivalent, key selection criteria include junction-to-lead thermal resistance (19 °C/W), reverse leakage (≤150 µA at 25°C), RoHS/halogen-free compliance, and J-STD-020 Level 1 moisture sensitivity.
Technical Context
The TSU2M45H employs patented Trench Schottky technology to achieve low conduction loss and high switching efficiency without minority-carrier storage delay. Its single-die configuration and cathode-band polarity marking support automated placement and unambiguous orientation on PCBs.
Thermal performance is characterized with a 5 mm × 5 mm Cu pad test board: RθJL = 19 °C/W enables effective heat transfer to the PCB lead, while RθJA = 68 °C/W reflects ambient-limited dissipation in standard SMT layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Forward current (IF) | 2 A continuous - supports mid-power DC/DC output stages without forced cooling |
| Peak reverse voltage (VRRM) | 45 V - suitable for 36 V automotive bus and 24 V industrial rail applications |
| Surge current (IFSM) | 30 A (8.3 ms) - withstands inrush and transient overloads in SMPS input rectification |
| Forward voltage (VF) | 0.59 V max at 2 A, 25°C - reduces conduction loss vs. planar Schottky or fast recovery diodes |
| Junction temperature range | –55°C to +175°C - enables operation in under-hood automotive environments |
| Junction-to-lead thermal resistance | 19 °C/W - allows direct thermal path to PCB copper, critical for power density |
| Reverse leakage (IR) | ≤150 µA at 45 V, 25°C - ensures low standby loss in always-on systems |
Pinout & Package
Package: Micro SMA - surface-mount, single-anode/single-cathode discrete diode with molded UL 94V-0 case, matte tin-plated leads, and cathode band polarity indicator. Weight: 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead 1) | Current entry terminal | Connected to lower-potential side (e.g., ground or return path) in forward bias |
| Cathode (lead 2, banded end) | Current exit terminal | Connected to higher-potential side (e.g., input rail); marking band prevents orientation errors during assembly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Trench Schottky architecture | Eliminates reverse recovery charge (Qrr ≈ 0), enabling zero-loss switching in high-frequency converters |
| Moisture sensitivity level 1 | No bake requirement before reflow - compatible with standard SMT lines without dry-pack handling |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained designs |
| Low RθJL (19 °C/W) | Enables >1.5 W power dissipation on minimal 5 mm × 5 mm Cu pad - reduces need for thermal vias or heatsinks |
Applications
| On-board DC/DC Converter | Automotive Lighting |
|---|---|
Use Scenario: High-efficiency buck converter supplying 5 V/3.3 V rails to ECUs and sensors in engine control modules. IC Role / Device Role / Timing Role: Output rectifier replacing fast recovery diodes to minimize conduction loss and improve light-load efficiency. Use Value: 0.59 V VF at 2 A reduces average power loss by ~35% vs. comparable 40 V fast diode, extending thermal margin. | Use Scenario: LED driver front-end rectification in headlamp and daytime running light (DRL) modules. IC Role / Device Role / Timing Role: Input AC/DC bridge or DC bus protection diode operating in 12 V/24 V vehicle electrical systems. Use Value: AEC-Q101 qualification and 175°C TJ max ensure robustness against under-hood thermal transients up to 150°C ambient. |
| Switching Mode Power Supply | AC-DC Adapter |
Use Scenario: Secondary-side synchronous rectifier replacement in 12–24 V, 20–40 W offline SMPS for industrial IoT gateways. IC Role / Device Role / Timing Role: Freewheeling diode in flyback or forward topology, conducting during MOSFET off-time. Use Value: Low Qrr eliminates switching loss spikes, improving efficiency by 0.8–1.2% at 100 kHz operation. | Use Scenario: Output rectification in compact wall-mounted adapters for consumer electronics (e.g., routers, set-top boxes). IC Role / Device Role / Timing Role: Primary or secondary rectifier handling 2 A continuous load with tight thermal constraints. Use Value: Micro SMA footprint (2.8 mm × 1.8 mm) enables miniaturized PCB layouts while maintaining 2 A rating. |
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-2EY45HM3/I | Same 2 A / 45 V rating, but TO-277 package (larger footprint, higher RθJA = 90 °C/W) | Less suitable for space-constrained automotive modules due to 4.5 mm × 3.5 mm outline | Prefer TSU2M45H where PCB area and thermal resistance are critical |
| ON Semiconductor SB240-E3/54 | 2 A / 40 V, DO-214AA package, higher VF (0.85 V @ 2 A), no AEC-Q101 | Not qualified for automotive; limited to commercial-grade adapters and lighting | Choose TSU2M45H when AEC-Q101, 45 V rating, or lower VF is required |
Compared with VS-2EY45HM3/I and SB240-E3/54, the TSU2M45H delivers superior power density (Micro SMA), lowest thermal resistance (19 °C/W), and automotive qualification - making it optimal for space- and reliability-critical 24–36 V systems.
Availability
TSU2M45H is available at Aetrix Electronics and suitable for switching mode power supplies, automotive lighting modules, and on-board DC/DC converters requiring stable component supply and AEC-Q101 assurance.
Supply support for TSU2M45H 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 devices, TVS, and rectifiers since 1979.
The TSU2M series targets high-reliability, high-efficiency rectification in automotive and industrial power conversion, leveraging TSC's proprietary Trench Schottky process to optimize VF, leakage, and thermal performance.
FAQ
What is the maximum junction temperature rating for the TSU2M45H?
The TSU2M45H has a maximum junction temperature (TJ) of +175°C, verified per AEC-Q101 stress testing. This rating allows reliable operation in under-hood automotive environments and high-ambient industrial settings. The device maintains specified electrical parameters up to this limit, provided thermal design respects RθJL = 19 °C/W and appropriate PCB copper area is used. Derating curves in the TSU2M45H datasheet confirm usable current capacity down to –55°C.
Is the TSU2M45H suitable for automotive applications?
Yes, the TSU2M45H is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, lighting modules, and infotainment power supplies. Its 175°C junction rating, halogen-free construction, and JESD201 Class 2 whisker resistance meet stringent automotive reliability requirements. The TSU2M45H marking code "Z3" and Micro SMA package are validated in TSC's AEC-Q101 test reports.
What is the forward voltage of the TSU2M45H at 2 A and 125°C?
The TSU2M45H exhibits a typical forward voltage of 0.54 V and a maximum of 0.62 V at 2 A and 125°C, per its electrical specifications table. This reduced VF versus room temperature (0.59 V max) reflects the negative temperature coefficient of Schottky diodes. These values are measured under pulse conditions (PW = 0.3 ms) and are critical for evaluating efficiency in high-temperature DC/DC converter designs using the TSU2M45H.
Does the TSU2M45H have a specified junction capacitance?
Yes, the TSU2M45H has a typical junction capacitance (CJ) of 152 pF at 1 MHz and 4.0 V reverse bias. This parameter directly impacts high-frequency switching behavior and EMI generation in SMPS circuits. The value is measured under standardized conditions and appears in the TSU2M45H electrical specifications table - essential for snubber design and noise filtering when using the TSU2M45H in >100 kHz topologies.
What packaging and reel quantity is offered for the TSU2M45H?
The TSU2M45H is supplied in Micro SMA package on tape-and-reel format, with 12,000 units per reel. This packaging supports high-speed automated pick-and-place assembly and complies with J-STD-020 moisture sensitivity level 1, eliminating pre-bake requirements. The reel specification is documented in the TSU2M45H ordering information section and aligns with standard SMT feeder compatibility.
TSU2M45H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 670 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 150 µA @ 45 V
- Capacitance @ Vr, F:
- 152pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Micro SMA
- Operating Temperature - Junction:
- -55°C ~ 175°C
TSU2M45H FAQ
1.How can I place an order for TSU2M45H through Aetrix?
Please submit a Request for Quotation (RFQ) for TSU2M45H 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 TSU2M45H reliable?
The price and inventory of TSU2M45H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSU2M45H is usually 5 days.
3.What payment methods are accepted for TSU2M45H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSU2M45H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSU2M45H?
TSU2M45H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSU2M45H 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 TSU2M45H?
For technical support, including TSU2M45H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSU2M45H requirements.
6.How does Aetrix verify that TSU2M45H is sourced from the original manufacturer or authorized distributors?
All TSU2M45H 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 TSU2M45H meets industry standards.
7.What is the process for return or replacement of TSU2M45H?
All TSU2M45H units undergo pre-shipment inspection (PSI). If there is an issue with TSU2M45H, 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 TSU2M45H part is unused and in its original packaging.
Return procedure for TSU2M45H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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