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Taiwan Semiconductor Corporation MBRS1645H
- Part No.:
- MBRS1645H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRS1645H.pdf
- Description:
- 16A, 45V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:9,911
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Product details
Overview
MBRS1645H from Taiwan Semiconductor is a 16A, 45V Schottky barrier surface-mount rectifier in TO-263AB (D2PAK) package, featuring low forward voltage (0.63 V at 16 A, 25°C), AEC-Q101 qualification, and 150 A surge capability. It serves as a freewheeling or reverse-battery protection diode in automotive DC/DC converters and low-voltage inverters.
For engineers reviewing the MBRS1645H datasheet, MBRS1645H pinout, MBRS1645H application, or MBRS1645H equivalent, key selection factors include its 45 V repetitive peak reverse voltage, 1.5 °C/W junction-to-case thermal resistance, 150°C max junction temperature, and RoHS/halogen-free compliance for automotive-grade power designs.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its low VF and high IFSM support high-efficiency, high-current switching in constrained thermal environments.
Designed for surface-mount automated placement, it meets moisture sensitivity level 1 (J-STD-020) and JESD201 Class 2 whisker resistance. The TO-263AB package enables direct heatsinking via the exposed cathode tab, critical for sustained 16 A conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating range in reverse-biased applications like reverse battery protection |
| IF | 16 A - Continuous forward current rating; supports high-power DC/DC stages without forced air cooling |
| VF @ 16A, 25°C | 0.63 V - Low conduction loss enabling >92% efficiency in 12 V–24 V automotive converters |
| IFSM | 150 A - Non-repetitive surge rating; withstands load dump transients per ISO 7637-2 |
| RθJC | 1.5 °C/W - Thermal resistance from junction to case; allows ~24 W dissipation with 36°C rise at 100% duty cycle |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments |
| IR @ 45 V, 25°C | 500 µA - Low leakage ensures minimal standby power loss in always-on vehicle modules |
Pinout & Package
TO-263AB (D2PAK) package with three terminals: anode (pin 1), cathode (exposed tab/pin 2), and cathode (pin 3). Cathode is electrically common across pins 2 and 3 and thermally connected to the large exposed metal pad for heatsinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current input | Sole anode connection; must be routed with low-inductance trace for high-di/dt switching |
| Cathode (Pin 2) | Forward current return / thermal path | Electrically and thermally tied to exposed tab; requires minimum 200 mm² copper pour for thermal management |
| Cathode (Pin 3) | Forward current return | Redundant cathode connection; improves current sharing and reduces bond wire stress during surge events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, TC, HTRB, and UHAST |
| Guard ring structure | Enhances edge termination robustness, preventing premature avalanche breakdown at 45 V VRRM |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry pack handling |
| Halogen-free (IEC 61249-2-21) | Meets automotive OEM environmental mandates; eliminates corrosive halogen gas emission during board repair or end-of-life processing |
| Matte tin plating (J-STD-002) | Ensures reliable solder wetting and intermetallic formation on OSP- or ENIG-finished PCBs |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12 V or 24 V battery to 3.3 V/5 V for infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: 0.63 V VF minimizes conduction loss at 16 A output, improving converter efficiency by ≥1.8% vs. higher-VF alternatives. | Use Scenario: Preventing damage when jumper cables are incorrectly connected to vehicle battery terminals. IC Role / Device Role / Timing Role: Series-connected reverse-polarity blocking diode in main power rail. Use Value: 45 V VRRM safely clamps reverse transients up to ±35 V while sustaining 16 A continuous load current. |
| Low-Voltage Inverters | Freewheeling Diodes in Motor Drives |
Use Scenario: 24 V–48 V inverters powering HVAC blowers or seat actuators in EVs. IC Role / Device Role / Timing Role: High-frequency freewheeling path for inductive kickback in half-bridge gate drivers. Use Value: Fast recovery (no minority carrier storage) and 150 A IFSM handle rapid PWM switching and motor stall surges. | Use Scenario: Brushless DC motor control in power steering or brake assist systems. IC Role / Device Role / Timing Role: Freewheeling path across low-side MOSFETs during PWM off-time. Use Value: Low RθJC (1.5 °C/W) and TO-263AB thermal pad enable stable operation at 10 kHz+ PWM frequencies without derating. |
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-MBR1645CT | TO-220AC package; dual common-cathode configuration; VF = 0.65 V @ 16 A, 25°C | Requires dual-layout footprint and lacks AEC-Q101 qualification | Preferred for cost-sensitive industrial supplies where automotive qualification is not required |
| ON Semiconductor MBR1645CT | TO-220AB package; single die; VF = 0.67 V @ 16 A, 25°C; no AEC-Q101 data published | Not validated for automotive temperature cycling or humidity testing | Acceptable for commercial-grade 45 V rectification where extended reliability validation is unnecessary |
Compared with VS-MBR1645CT and MBR1645CT, MBRS1645H offers automotive-grade reliability in surface-mount form, lower VF, and superior thermal performance via D2PAK's exposed tab-critical for space-constrained, high-reliability vehicle subsystems.
Availability
MBRS1645H is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and low-voltage inverters requiring stable component supply, AEC-Q101 compliance, and high-current Schottky performance.
Supply support for MBRS1645H 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 computing markets since 1979.
The MBRS16xxH series targets high-reliability automotive power conversion, emphasizing AEC-Q101 qualification, low-loss Schottky architecture, and robust thermal packaging for under-hood deployment.
FAQ
What is the maximum junction temperature rating for MBRS1645H?
The MBRS1645H has a maximum junction temperature (TJ max) of +150°C. This rating allows sustained operation in high-ambient environments such as engine compartments or near powertrain electronics. Derating curves in the official datasheet define allowable forward current versus case temperature, and thermal design must maintain junction temperature below this limit under worst-case load and ambient conditions. MBRS1645H achieves this via its 1.5 °C/W RθJC and TO-263AB thermal pad.
Is MBRS1645H qualified for automotive applications?
Yes, MBRS1645H is AEC-Q101 qualified, meaning it has passed accelerated stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing. This qualification confirms suitability for automotive power systems such as body control modules, lighting drivers, and DC/DC converters. MBRS1645H also complies with RoHS and halogen-free standards required by major OEMs.
What is the forward voltage drop of MBRS1645H at rated current?
At 16 A and 25°C junction temperature, MBRS1645H exhibits a maximum forward voltage (VF) of 0.63 V. At elevated temperature (125°C), VF drops to 0.57 V due to the negative temperature coefficient of Schottky diodes. This low VF directly reduces conduction losses-e.g., 10.1 W at 16 A-making MBRS1645H especially effective in high-efficiency 12 V–24 V automotive power supplies.
Does MBRS1645H have a guard ring structure?
Yes, MBRS1645H incorporates a guard ring for overvoltage protection. This structural feature improves edge termination robustness, suppressing premature avalanche breakdown at the silicon periphery under transient reverse bias. It contributes to stable 45 V VRRM performance and enhances long-term reliability in noisy automotive electrical systems where load dump or jump-start surges occur.
What packaging and reel quantity does MBRS1645H ship in?
MBRS1645H is supplied in TO-263AB (D2PAK) package and shipped in tape-and-reel format with 800 units per reel. The device marking code "MBRS1645" appears on the top surface, along with date and factory codes. Its moisture sensitivity level is rated at J-STD-020 Level 1, eliminating the need for baking prior to SMT reflow processing.
MBRS1645H 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
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 16A
- Voltage - Forward (Vf) (Max) @ If:
- 630 mV @ 16 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
MBRS1645H FAQ
1.How can I place an order for MBRS1645H through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRS1645H 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 MBRS1645H reliable?
The price and inventory of MBRS1645H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRS1645H is usually 5 days.
3.What payment methods are accepted for MBRS1645H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRS1645H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRS1645H?
MBRS1645H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRS1645H 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 MBRS1645H?
For technical support, including MBRS1645H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRS1645H requirements.
6.How does Aetrix verify that MBRS1645H is sourced from the original manufacturer or authorized distributors?
All MBRS1645H 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 MBRS1645H meets industry standards.
7.What is the process for return or replacement of MBRS1645H?
All MBRS1645H units undergo pre-shipment inspection (PSI). If there is an issue with MBRS1645H, 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 MBRS1645H part is unused and in its original packaging.
Return procedure for MBRS1645H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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