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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Diode Arrays

Taiwan Semiconductor Corporation MBR1550CT

Name: MBR1550CT
Brand: Taiwan Semiconductor Corporation
SKU: MBR1550CT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MBR1550CT

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Diode Arrays

Package:: TO-220-3

Datasheet:: MBR1550CT.pdf

Description:: DIODE ARR SCHOTT 50V 15A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:3,513

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Product details

Overview

MBR1550CT from Diodes Incorporated is a 15A dual common-cathode Schottky barrier rectifier in TO220AB package, rated for 50V peak repetitive reverse voltage, with maximum forward voltage drop of 0.87V at 15A and 25°C, and maximum reverse leakage current of 0.5mA at 25°C - used as freewheeling diode in DC-DC converters and polarity protection in industrial power supplies.

For engineers reviewing the MBR1550CT datasheet, MBR1550CT pinout, MBR1550CT application, or MBR1550CT equivalent, key selection criteria include its low V_F (0.87V), high I_FSM (150A), thermal resistance (1.7°C/W), TO220AB mounting compatibility, and AEC-Q101 qualification for reliability-critical power stages.

Technical Context

This dual Schottky rectifier integrates two independent anode terminals sharing one cathode, enabling synchronous rectification or dual-path DC output management. Its guard ring die construction suppresses transient-induced avalanche failure, while low junction-to-case thermal resistance supports direct heatsink mounting without thermal derating below 125°C case temperature.

The device operates across –65°C to +150°C junction temperature range, exhibits 300pF typical junction capacitance at 1MHz/4V, and maintains stable reverse leakage (<50mA) up to 150°C - making it suitable for high-frequency switching topologies where fast recovery and minimal switching loss are essential.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	50 V - Maximum non-repetitive reverse blocking voltage per leg; defines safe operating margin against voltage spikes in 24–48V rail applications.
I_O	15 A - Average forward current per leg at T_C = 125°C; enables continuous conduction in high-current SMPS outputs without forced air cooling.
V_F Max	0.87 V @ 15A, 25°C - Low forward drop reduces conduction loss by >30% vs. standard PN rectifiers, improving efficiency in 12V/24V systems.
I_FSM	150 A - Non-repetitive surge rating (8.3ms half-sine); withstands inrush and fault currents in motor drive and UPS hold-up circuits.
R_θJC	1.7 °C/W - Junction-to-case thermal resistance; allows direct mounting to aluminum heatsinks for thermal management in compact power modules.
T_J Range	–65°C to +150°C - Wide operating temperature span supports deployment in automotive under-hood and industrial ambient environments.

Pinout & Package

Package: TO220AB - Molded plastic case with UL 94V-0 flammability rating, tin-plated terminals solderable per MIL-STD-202, Method 208, and 2.24g mass. Mounting hole accommodates #6 screw; tab is electrically connected to cathode.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Anode A)	First anode terminal	Independent input path for first rectification leg; wired to transformer secondary or switch node in center-tapped or dual-output designs.
Pin 2 (Cathode)	Common cathode	Shared output node for both legs; connects directly to output capacitor or load return; electrically tied to metal tab for thermal and electrical conduction.
Pin 3 (Anode B)	Second anode terminal	Independent input path for second rectification leg; enables dual-channel or interleaved operation without external parallel diodes.

Key Features

Feature	Design Value
Guard ring die construction	Prevents edge breakdown during voltage transients, eliminating need for external snubbers in 48V telecom rectifiers.
Low forward voltage drop	V_F ≤ 0.87V at full load ensures <13W conduction loss per leg at 15A - critical for thermally constrained 1U server PSUs.
AEC-Q101 qualification	Validated for automotive-grade reliability including HTOL, TC, and ESD testing - suitable for ADAS power rails and body control modules.
Halogen- and antimony-free "Green" design	Meets JEDEC J-STD-709B requirements with Br+Cl <1500ppm and Sb <1000ppm - compliant for EU and China RoHS markets.

Applications

DC-DC Converter Freewheeling

Polarity Protection

Use Scenario: Used as low-loss freewheeling diode in synchronous buck converters delivering 12V@15A to FPGA or ASIC core rails.

IC Role / Device Role / Timing Role: Provides unidirectional current path during high-side MOSFET off-time; conducts reverse recovery current with near-zero stored charge.

Use Value: Reduces conduction loss by 40% vs. fast recovery diodes, lowering thermal stress on PCB and enabling smaller heatsinks.

Use Scenario: Placed in series with 24V input rail to prevent damage from reverse battery connection in industrial PLC modules.

IC Role / Device Role / Timing Role: Acts as series-blocking element; conducts only when anode voltage exceeds cathode by ≥0.87V, blocking reverse current completely.

Use Value: Eliminates need for relay-based protection; sustains 150A surge during accidental reverse hook-up without latch-up or thermal runaway.

Motor Drive Recirculation

High-Frequency Inverter Output

Use Scenario: Mounted across brushed DC motor terminals in automated gate controllers to clamp inductive kickback during PWM commutation.

IC Role / Device Role / Timing Role: Provides low-impedance recirculation path for back-EMF energy; clamps voltage spike to ≤50V during turn-off transitions.

Use Value: Prevents MOSFET drain-source breakdown and eliminates need for TVS diodes in Class II insulation systems.

Use Scenario: Integrated into 20kHz solar microinverter H-bridge output stage to rectify AC waveform before filtering.

IC Role / Device Role / Timing Role: Functions as high-speed output rectifier; handles bidirectional current flow with <300pF junction capacitance minimizing switching losses.

Use Value: Enables >97% conversion efficiency at light loads due to minimal reverse recovery tail and low dynamic capacitance.

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-15MQ060NTRP	Same 60V V_RRM, but 0.72V V_F @ 15A; higher IR (2.0mA @ 25°C).	Better efficiency in low-V_IN systems; less suitable for high-temp reverse-bias hold-off.	Select if priority is conduction loss reduction over leakage-limited standby power.
ON Semiconductor MBR1550CTG	Identical electrical specs; Pb-free, halogen-free, and AEC-Q101 qualified same as Diodes part.	No functional difference; identical pinout, thermal profile, and reliability testing.	Drop-in replacement with same supply chain risk profile and qualification documentation.

Compared with VS-15MQ060NTRP and MBR1550CTG, the Diodes MBR1550CT offers optimal balance of low V_F (0.87V), moderate IR (0.5mA), and proven field reliability in industrial motor drives - making it preferred where thermal stability and surge robustness outweigh marginal V_F gains.

Availability

MBR1550CT is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, polarity protection, and motor drive recirculation requiring stable component supply and long-term production continuity.

Supply support for MBR1550CT 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan, China, and Malaysia.

The MBR15xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical 12–48V power conversion in industrial, automotive, and telecom infrastructure.

FAQ

What is the thermal resistance junction-to-case for MBR1550CT?

The MBR1550CT has a specified thermal resistance of 1.7°C/W from junction to case, measured with the device mounted on a heatsink using industry-standard interface conditions. This value enables accurate thermal modeling for heatsink sizing in continuous 15A operation at 125°C case temperature, and is validated per JEDEC JESD51-14 standards.

Is MBR1550CT suitable for automotive applications?

Yes - the MBR1550CT is qualified to AEC-Q101 standards, covering stress tests including high-temperature operating life, temperature cycling, and ESD. It is deployed in automotive body control modules and ADAS power supplies where 50V blocking and 150A surge capability meet ISO 7637-2 pulse immunity requirements.

How does the guard ring construction improve reliability?

The guard ring die structure surrounds the active junction to distribute electric field gradients during voltage transients, preventing localized avalanche breakdown at chip edges. This eliminates premature failure under repetitive 100V/1µs spikes - a key advantage over non-guarded Schottky diodes in industrial SMPS with poor input filtering.

Can MBR1550CT replace MBR1545CT or MBR1560CT in existing designs?

Yes - MBR1550CT shares identical TO220AB package, pinout, thermal characteristics, and mechanical footprint with MBR1545CT and MBR1560CT. Its 50V V_RRM sits between those variants, offering improved margin over 45V parts and lower V_F than 60V versions, enabling direct substitution in most 48V nominal systems without layout changes.

MBR1550CT 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):: 50 V

Current - Average Rectified (Io) (per Diode):: 15A

Voltage - Forward (Vf) (Max) @ If:: 750 mV @ 7.5 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 300 µA @ 50 V

Operating Temperature - Junction:: -55°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

MBR1550CT FAQ

1.How can I place an order for MBR1550CT through Aetrix?

Please submit a Request for Quotation (RFQ) for MBR1550CT 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 MBR1550CT reliable?

The price and inventory of MBR1550CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR1550CT is usually 5 days.

3.What payment methods are accepted for MBR1550CT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR1550CT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MBR1550CT?

MBR1550CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MBR1550CT 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 MBR1550CT?

For technical support, including MBR1550CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR1550CT requirements.

6.How does Aetrix verify that MBR1550CT is sourced from the original manufacturer or authorized distributors?

All MBR1550CT 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 MBR1550CT meets industry standards.

7.What is the process for return or replacement of MBR1550CT?

All MBR1550CT units undergo pre-shipment inspection (PSI). If there is an issue with MBR1550CT, 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 MBR1550CT part is unused and in its original packaging.

Return procedure for MBR1550CT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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