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Taiwan Semiconductor Corporation MBRS15H45CTH
- Part No.:
- MBRS15H45CTH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRS15H45CTH.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,798
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Product details
Overview
MBRS15H45CTH from Taiwan Semiconductor is a dual-die Schottky barrier rectifier in TO-263AB (D2PAK) package, rated for 15 A average forward current and 45 V repetitive peak reverse voltage, with 150 A surge capability and 175 °C maximum junction temperature - used as freewheeling diode in automotive DC/DC converters.
For engineers reviewing the MBRS15H45CTH datasheet, MBRS15H45CTH pinout, MBRS15H45CTH application, or MBRS15H45CTH equivalent, key selection factors include low VF (0.64 V typ. @ 7.5 A, 25 °C), AEC-Q101 qualification, moisture sensitivity level 1, and dual-die configuration enabling independent channel operation in reverse-battery protection circuits.
Technical Context
This dual-die Schottky rectifier integrates two independent 45 V / 15 A diodes in a single TO-263AB thermally optimized package, supporting parallel or half-bridge freewheeling topologies. Its 2 °C/W junction-to-case thermal resistance and 10,000 V/µs dv/dt rating enable stable operation under fast-switching, high-current transients.
The device features guard ring structure for overvoltage robustness and meets JESD201 Class 2 whisker resistance. With 0.3 µA max reverse leakage at 25 °C and 10 mA at 125 °C, it maintains low power loss across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Avg) | 15 A - supports continuous conduction mode in 12 V–48 V automotive DC/DC converters |
| VRRM | 45 V - withstands load-dump transients up to ISO 7637-2 Pulse 5a in 36 V systems |
| IFSM (8.3 ms) | 150 A - handles cold-crank surge without failure in starter motor control circuits |
| VF @ 15 A, 25 °C | 0.76–0.80 V - reduces conduction loss by >30% vs. silicon PN rectifiers at same current |
| RθJC | 2 °C/W - enables direct heatsinking to PCB copper pour for passive thermal management |
| TJ max | 175 °C - certified for under-hood automotive environments per AEC-Q101 stress test conditions |
| IR @ 45 V, 125 °C | ≤10 mA - limits standby power loss in always-on vehicle modules |
Pinout & Package
Package: TO-263AB (D2PAK), surface-mount, 3-terminal case with exposed cathode tab for thermal and electrical connection. Polarity marked on top surface; anode/cathode orientation follows standard D2PAK dual-diode layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Input anode of first diode | Connects to switching node in synchronous buck freewheel path |
| Pin 2 (Cathode common) | Shared cathode terminal | Electrically and thermally tied to exposed metal tab; must be soldered to large copper area |
| Pin 3 (Anode 2) | Input anode of second diode | Enables independent routing for dual-rail or redundancy configurations |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Guard ring structure | Improves edge breakdown immunity and stabilizes VRRM under voltage overshoot conditions |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally restricted substances |
| Matte tin-plated leads | Ensures reliable solder wetting and intermetallic formation per J-STD-002B |
Applications
| Low-Voltage DC/DC Converter | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 24 V truck battery to 5 V/3.3 V logic rails in telematics modules. IC Role / Device Role / Timing Role: Freewheeling diode in non-synchronous buck regulator, conducting during low-side switch off-time. Use Value: Low VF minimizes power loss at 10–15 A loads; dual-die layout allows independent channel use for multi-output designs. | Use Scenario: Preventing damage when jumper cables are connected with reversed polarity in 12 V passenger vehicles. IC Role / Device Role / Timing Role: Series-connected anode-to-load, cathode-to-battery, blocking reverse current during fault condition. Use Value: 150 A IFSM withstands momentary short-circuit surges; 175 °C TJ rating ensures reliability during sustained reverse bias. |
| Automotive Lighting Driver | High-Frequency Inverter Output |
Use Scenario: LED headlamp driver with PWM dimming and thermal foldback in ambient temperatures up to 105 °C. IC Role / Device Role / Timing Role: Output rectifier in boost converter feeding constant-current LED string. Use Value: Low IR at 125 °C (<10 mA) prevents thermal runaway; TO-263AB tab provides direct thermal path to heatsink. | Use Scenario: Output stage of 20 kHz resonant inverter powering HID ballast in commercial vehicle lighting. IC Role / Device Role / Timing Role: High-speed unidirectional current path replacing slower PN diodes in bridge rectification. Use Value: 10,000 V/µs dv/dt rating suppresses false turn-on during fast voltage transitions; dual-die isolation avoids cross-talk. |
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-15BQ045PBF | Same 45 V / 15 A rating, but single-die TO-220AC package; RθJC = 3.5 °C/W | Lacks dual-die isolation; unsuitable for split-rail or redundancy schemes | Select when board space permits through-hole mounting and thermal budget allows higher RθJC |
| ON Semiconductor MBR1545CT | Identical TO-263AB package and dual-die configuration, but not AEC-Q101 qualified; IR = 50 µA @ 25 °C | Not approved for automotive safety-critical or under-hood use per OEM requirements | Select for cost-sensitive industrial DC/DC where automotive qualification is unnecessary |
Compared with VS-15BQ045PBF and MBR1545CT, MBRS15H45CTH uniquely combines AEC-Q101 compliance, dual-die isolation, and 2 °C/W thermal resistance - making it the only option qualified for high-reliability automotive freewheeling and reverse-polarity protection where thermal density and functional safety coexist.
Availability
MBRS15H45CTH is available at Aetrix Electronics and suitable for automotive lighting drivers, 24 V–48 V DC/DC converters, and reverse battery protection circuits requiring stable component supply across extended temperature and high-surge environments.
Supply support for MBRS15H45CTH 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, rectifiers, and protection components since 1979.
The MBRS15H45CTH belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for automotive power conversion and protection applications demanding high surge robustness, low conduction loss, and long-term reliability under thermal cycling.
FAQ
What is the marking code printed on the MBRS15H45CTH device body?
The MBRS15H45CTH is laser-marked with "MBRS15H45CT" on its top surface, omitting the final "H" - which denotes the tape-and-reel packaging variant rather than a device revision. This marking aligns with Taiwan Semiconductor's standard coding for TO-263AB Schottky rectifiers and matches the ordering code prefix used in their datasheet and packaging documentation.
Is MBRS15H45CTH suitable for use in synchronous rectification topologies?
No - MBRS15H45CTH is a passive Schottky rectifier and lacks gate control or integrated drive circuitry required for synchronous rectification. It functions as a freewheeling or output rectifier in non-synchronous topologies. For synchronous designs, discrete MOSFETs or dedicated synchronous rectifier ICs must be used instead of MBRS15H45CTH.
Does MBRS15H45CTH have a common cathode or common anode configuration?
The MBRS15H45CTH uses a common-cathode configuration: Pin 2 is the shared cathode terminal connected to the exposed metal tab, while Pins 1 and 3 serve as independent anodes. This layout enables dual-channel operation with shared return path - ideal for dual-output DC/DC converters or redundant freewheeling paths in automotive systems.
What is the maximum allowable PCB copper area for thermal relief when mounting MBRS15H45CTH?
Taiwan Semiconductor recommends a minimum 400 mm² copper pour connected to the exposed cathode tab (Pin 2) for optimal thermal performance. Larger areas improve heat dissipation, but no upper limit is specified - the 2 °C/W RθJC value assumes full tab soldering to a solid copper plane. Thermal vias beneath the tab further reduce effective RθJA in multilayer boards.
Can MBRS15H45CTH replace MBRS1545CT in an existing design?
Yes - MBRS15H45CTH is a direct replacement for MBRS1545CT in terms of pinout, package, and electrical ratings. The "H" suffix indicates tape-and-reel packaging and AEC-Q101 qualification, while MBRS1545CT is the base industrial-grade version. No PCB or schematic changes are needed, but MBRS15H45CTH adds automotive qualification and tighter IR specifications at elevated temperature.
MBRS15H45CTH 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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 30 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 175°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
MBRS15H45CTH FAQ
1.How can I place an order for MBRS15H45CTH through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRS15H45CTH 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 MBRS15H45CTH reliable?
The price and inventory of MBRS15H45CTH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRS15H45CTH is usually 5 days.
3.What payment methods are accepted for MBRS15H45CTH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRS15H45CTH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRS15H45CTH?
MBRS15H45CTH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRS15H45CTH 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 MBRS15H45CTH?
For technical support, including MBRS15H45CTH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRS15H45CTH requirements.
6.How does Aetrix verify that MBRS15H45CTH is sourced from the original manufacturer or authorized distributors?
All MBRS15H45CTH 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 MBRS15H45CTH meets industry standards.
7.What is the process for return or replacement of MBRS15H45CTH?
All MBRS15H45CTH units undergo pre-shipment inspection (PSI). If there is an issue with MBRS15H45CTH, 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 MBRS15H45CTH part is unused and in its original packaging.
Return procedure for MBRS15H45CTH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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