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Taiwan Semiconductor Corporation MBRS2045CTH
- Part No.:
- MBRS2045CTH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRS2045CTH.pdf
- Description:
- DIODE ARR SCHOTT 45V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,798
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Product details
Overview
MBRS2045CTH from Taiwan Semiconductor is a 20A, 45V dual-die Schottky barrier rectifier in TO-263AB (D2PAK) package, featuring low forward voltage (0.65 V max at 10 A, 25°C), 150 A surge capability, and AEC-Q101 qualification for automotive use. It serves as a high-efficiency freewheeling or reverse-battery protection diode in DC/DC converters and car lighting systems.
For engineers reviewing the MBRS2045CTH datasheet, MBRS2045CTH pinout, MBRS2045CTH application, or MBRS2045CTH equivalent, key selection criteria include its 45 V repetitive peak reverse voltage, 1.5 °C/W junction-to-case thermal resistance, 100 µA max reverse leakage at 25°C, and dual-common-cathode configuration in surface-mount D2PAK.
Technical Context
The MBRS2045CTH integrates two independent Schottky die in a single TO-263AB thermally optimized package with common cathode connection. Its guard ring structure provides overvoltage protection, and matte tin-plated leads meet J-STD-002 solderability requirements.
Designed for high-frequency switching applications, it supports 10,000 V/µs critical rate of rise of off-state voltage and operates across –55°C to +150°C junction temperature range, with moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage the device blocks reliably in circuit |
| IF | 20 A - Continuous average forward current per diode under specified thermal conditions |
| IFSM | 150 A - Peak non-repetitive surge current handling capability (8.3 ms half-sine) |
| VF (10 A, 25°C) | ≤0.65 V - Low conduction loss enabling high efficiency in low-voltage power stages |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case, enabling effective heatsinking via PCB copper |
| IR (25°C) | ≤100 µA - Low reverse leakage ensures minimal standby power loss |
| TJ max | +150°C - High junction temperature rating supports operation in under-hood automotive environments |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, 3-terminal, common-cathode dual-diode configuration. Case meets UL 94V-0 flammability rating; terminals are matte tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first Schottky diode | Connects to input/high-side node in freewheeling or reverse polarity protection path |
| Pin 2 (Cathode) | Common cathode of both diodes | Serves as shared output/return node; must be routed to large copper area for thermal management |
| Pin 3 (Anode 2) | Anode of second Schottky diode | Enables dual-path operation (e.g., dual-rail DC/DC or redundant protection) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Guard ring structure | Enhances ruggedness against transient overvoltage events without external clamping |
| Dual-die common-cathode layout | Reduces component count and PCB footprint versus two discrete Schottky diodes |
| Moisture sensitivity level 1 | Eliminates need for dry-pack or baking prior to reflow assembly |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally restricted materials |
Applications
| DC/DC Converter Output Rectification | Reverse Battery Protection |
|---|---|
Use Scenario: Used in synchronous or asynchronous buck converter outputs delivering 3.3–12 V at up to 20 A. IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during low-side switch off-time to maintain continuous inductor current. Use Value: 0.65 V VF at 10 A minimizes conduction loss and improves system efficiency over silicon alternatives. | Use Scenario: Placed in series with vehicle battery feed to prevent damage from accidental reverse connection. IC Role / Device Role / Timing Role: Forward-conducting blocking diode that passes normal polarity but blocks reverse current. Use Value: 150 A IFSM withstands cranking surges; 45 V VRRM covers 36 V nominal truck systems with margin. |
| Automotive LED Lighting Driver | Low-Voltage Inverter Freewheeling |
Use Scenario: Protects LED driver ICs from back-EMF during PWM dimming transients in headlamp modules. IC Role / Device Role / Timing Role: Clamp diode absorbing inductive kickback from boost inductors or LED strings. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast-switching LED current transitions. | Use Scenario: Freewheeling path in 12 V input inverters powering 24 V auxiliary loads in commercial vehicles. IC Role / Device Role / Timing Role: Provides low-loss return path for inductive energy during MOSFET commutation. Use Value: Dual-die configuration allows interleaved or parallel operation to handle 40 A total with shared thermal mass. |
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-20CPH045 | Same 45 V VRRM, 20 A IF, TO-263AB package; VF = 0.72 V (max @ 20 A, 25°C) - 70 mV higher than MBRS2045CTH | Identical automotive and industrial DC/DC use cases; slightly higher conduction loss affects thermal design margin | Select when Vishay supply chain preference or legacy BOM alignment drives sourcing |
| ON Semiconductor MBR2045CT | 45 V VRRM, 20 A IF, TO-220AC package (not surface-mount); RθJC = 2.5 °C/W - 67% higher than MBRS2045CTH's 1.5 °C/W | Requires through-hole mounting and larger heatsink; unsuitable for space-constrained automotive PCBs | Choose only if TO-220 mechanical retention or legacy board compatibility is mandatory |
Compared with VS-20CPH045 and MBR2045CT, the MBRS2045CTH offers superior thermal performance (1.5 °C/W), lower forward voltage, and AEC-Q101 qualification - making it the preferred choice for new automotive surface-mount designs where efficiency and reliability are prioritized.
Availability
MBRS2045CTH is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converter design, and reverse battery protection requiring stable component supply and AEC-Q101-compliant sourcing.
Supply support for MBRS2045CTH 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 global automotive, industrial, and consumer markets since 1979.
The MBRS2045CTH belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive under-hood and interior electronics.
FAQ
What is the maximum junction temperature rating for the MBRS2045CTH?
The MBRS2045CTH has a maximum junction temperature (TJ max) of +150°C, verified per AEC-Q101 stress testing. This rating enables reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C. Derating curves in the datasheet confirm 20 A continuous current is sustainable up to 125°C case temperature when mounted on adequate copper area. The MBRS2045CTH must not be operated beyond this limit to ensure long-term reliability.
Is the MBRS2045CTH pin-compatible with other parts in the MBRS20xxCTH family?
Yes, all MBRS20xxCTH devices - including MBRS2035CTH, MBRS2045CTH, MBRS2050CTH, and up to MBRS20150CTH - share identical TO-263AB (D2PAK) package dimensions, pinout, and terminal configuration. The only differences are rated VRRM (35–150 V) and associated electrical parameters like VF and IR. This allows direct voltage-level substitution on the same PCB layout without redesign.
Does the MBRS2045CTH require special handling during reflow soldering?
No - the MBRS2045CTH is rated Moisture Sensitivity Level 1 (MSL-1) per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and subjected to standard lead-free reflow profiles (peak 260°C) without baking or dry-pack requirements. Its matte tin-plated leads also comply with J-STD-002 for solderability, ensuring robust joint formation in automated placement processes.
What is the reverse leakage current specification for the MBRS2045CTH at elevated temperature?
At TJ = 125°C and rated VR = 45 V, the MBRS2045CTH exhibits a maximum reverse leakage current (IR) of 15 mA per diode. This value is confirmed in the Electrical Specifications table and reflects worst-case behavior under high-temperature stress. At 25°C, IR is limited to 100 µA max - a 150× reduction - highlighting strong thermal stability of the Schottky junction.
How does the guard ring feature improve robustness in the MBRS2045CTH?
The guard ring in the MBRS2045CTH is a diffusion-based structural element surrounding the active Schottky junction. It mitigates edge breakdown under transient overvoltage conditions - such as load dump or inductive switching spikes - by distributing electric field stress away from the junction periphery. This eliminates the need for external TVS clamps in many 12 V automotive circuits, directly enhancing system-level surge immunity without added components.
MBRS2045CTH 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
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 840 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
MBRS2045CTH FAQ
1.How can I place an order for MBRS2045CTH through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRS2045CTH 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 MBRS2045CTH reliable?
The price and inventory of MBRS2045CTH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRS2045CTH is usually 5 days.
3.What payment methods are accepted for MBRS2045CTH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRS2045CTH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRS2045CTH?
MBRS2045CTH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRS2045CTH 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 MBRS2045CTH?
For technical support, including MBRS2045CTH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRS2045CTH requirements.
6.How does Aetrix verify that MBRS2045CTH is sourced from the original manufacturer or authorized distributors?
All MBRS2045CTH 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 MBRS2045CTH meets industry standards.
7.What is the process for return or replacement of MBRS2045CTH?
All MBRS2045CTH units undergo pre-shipment inspection (PSI). If there is an issue with MBRS2045CTH, 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 MBRS2045CTH part is unused and in its original packaging.
Return procedure for MBRS2045CTH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBRS2045CTH Tags
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