My Inquiry
My Account
Diodes Incorporated MBRB1545CT-T
- Part No.:
- MBRB1545CT-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
MBRB1545CT-T.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MBRB1545CT-T from Diodes Incorporated is a 15A dual common-cathode surface-mount Schottky barrier rectifier in D²PAK (TO-263) package, rated for 45V peak repetitive reverse voltage, 0.7V forward voltage at 7.5A per element, and 150A non-repetitive surge current. It delivers low power loss and high efficiency in DC-DC converter outputs, freewheeling paths, and polarity protection circuits.
For engineers reviewing the MBRB1545CT-T datasheet, MBRB1545CT-T pinout, MBRB1545CT-T application, or MBRB1545CT-T equivalent, key selection criteria include its 45V VRRM rating, dual common-cathode configuration, 3.0°C/W junction-to-terminal thermal resistance, 30ns reverse recovery time, and RoHS-compliant tin-plated terminals.
Technical Context
This dual-element Schottky rectifier integrates two independent anode terminals (Pins 1 and 3) sharing a common cathode (Pins 2 and 4), enabling synchronous or interleaved operation in high-current DC-DC topologies. Its guard ring die construction provides transient overvoltage immunity without external clamping.
Designed for low-voltage, high-frequency switching applications, it supports continuous 15A average output current at TC = 105°C with minimal conduction loss and exhibits 250pF typical junction capacitance at 4V reverse bias - critical for minimizing switching node ringing in SMPS designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum peak reverse voltage before breakdown; defines safe operating limit in 48V bus protection or buck converter freewheeling. |
| IO (per element) | 15 A @ TC = 105°C - Continuous forward current capability per diode; enables compact heatsinking in high-density power modules. |
| VFM | 0.7 V @ IF = 7.5A - Low conduction loss per element; reduces power dissipation by ~50% vs. standard PN rectifiers at same current. |
| IFSM | 150 A (8.3ms half-sine) - Surge withstand capacity; accommodates inrush and fault currents in industrial motor drives. |
| RθJT | 3.0 °C/W - Junction-to-terminal thermal resistance; allows direct mounting to PCB copper pour for efficient heat transfer without external heatsink. |
| trr | 30 ns - Reverse recovery time; minimizes switching losses and EMI in >100kHz converters. |
| CT | 250 pF @ 1MHz, 4V - Junction capacitance; impacts snubber design and gate drive interaction in synchronous rectification. |
Pinout & Package
Package: D²PAK (TO-263), molded plastic case with UL 94V-0 flammability rating, 1.7g mass, and tin-plated solderable terminals. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky element; connects to high-side switch node in buck or half-bridge topology. |
| Pin 2 & Pin 4 | Common Cathode | Shared output node for both elements; must be routed with low-inductance copper to minimize voltage overshoot during commutation. |
| Pin 3 | Anode 2 | Input terminal for second Schottky element; enables dual-phase or redundant rectification paths. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Provides inherent transient voltage suppression up to 150A surge without external TVS, reducing BOM count in automotive and industrial power supplies. |
| Dual common-cathode configuration | Enables space-efficient dual-path rectification on single footprint - ideal for interleaved DC-DC converters requiring <10mm board area per 15A channel. |
| Low VFM (0.7V @ 7.5A) | Reduces conduction loss to ≤5.25W per element at full load, lowering thermal stress and improving system efficiency by ≥2% vs. comparable 40V Schottkys. |
| 30ns trr | Minimizes reverse recovery charge (Qrr ≈ 1.5nC), suppressing shoot-through risk and EMI generation in synchronous rectified flyback or LLC resonant converters. |
| RoHS-compliant tin finish | Ensures compatibility with lead-free reflow profiles (peak 260°C) and eliminates post-solder cleaning requirements in high-volume manufacturing. |
Applications
| DC-DC Converter Output Rectification | Freewheeling Diode in Motor Drives |
|---|---|
Use Scenario: Secondary-side rectification in 12V–48V input isolated DC-DC modules delivering up to 30A total output. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss, fast-recovery path for transformer secondary current during switch off-time. Use Value: 0.7V VFM cuts conduction loss by 40% versus PN diodes, enabling >94% efficiency at 20A load while maintaining <65°C case temperature. | Use Scenario: Bidirectional freewheeling path across brushed DC motor windings in 24V industrial actuators. IC Role / Device Role / Timing Role: Clamp inductive kickback during PWM turn-off, absorbing 150A surge peaks without degradation. Use Value: 150A IFSM rating ensures reliable operation under stall conditions; 30ns trr prevents cross-conduction in H-bridge gate drivers. |
| Polarity Protection in Power Inputs | OR-ing Diode in Redundant Power Supplies |
Use Scenario: Reverse-voltage blocking at main 24V/48V power entry of telecom base station boards. IC Role / Device Role / Timing Role: Series-connected Schottky element preventing damage from accidental battery reversal or hot-swap misinsertion. Use Value: 45V VRRM provides 5V margin above 48V nominal rail; 0.7V drop limits insertion loss to <1.5W at 15A, avoiding thermal derating. | Use Scenario: Diode-OR configuration combining two 24V/15A AC-DC supplies in server backplanes. IC Role / Device Role / Timing Role: Dual-anode structure allows independent control of each supply path while sharing single cathode output bus. Use Value: Matched VFM between elements ensures balanced current sharing; 3.0°C/W RθJT enables direct copper pour thermal coupling for stable 30A combined load. |
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-15CTH04-M3/45 | 45V VRRM, 15A IO, but TO-220AC package (single anode), no common-cathode dual configuration. | Requires two devices and larger board area for dual-path use; lacks integrated dual-anode layout. | Select when discrete mounting or vertical heatsinking is preferred over surface-mount density. |
| ON Semiconductor MBR1545CT | Identical electrical specs and D²PAK package, but legacy through-hole variant (non-surface-mount) with different leadform and tape/reel packaging. | Not suitable for automated SMT assembly; requires wave solder or hand-soldering. | Select only for legacy repair or through-hole prototyping where SMT process is unavailable. |
Compared with VS-15CTH04-M3/45 and MBR1545CT, the MBRB1545CT-T uniquely combines dual common-cathode topology, surface-mount D²PAK packaging, and 150A surge rating - enabling higher power density and simplified layout in modern SMT-based power systems.
Availability
MBRB1545CT-T is available at Aetrix Electronics and suitable for DC-DC converter output rectification, freewheeling diode applications in motor drives, and polarity protection circuits requiring stable component supply and long-term industrial availability.
Supply support for MBRB1545CT-T 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 and manufacturing operations across Asia and the Americas.
The MBRB15xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in industrial, computing, and telecom infrastructure equipment.
FAQ
What is the maximum junction temperature for continuous operation?
The MBRB1545CT-T supports continuous operation from –65°C to +150°C junction temperature when reverse voltage is ≤80% of VRRM (≤36V). At VR ≤50% VRRM (≤22.5V), the upper limit extends to +180°C. Thermal design must ensure junction temperature remains within these limits using the 3.0°C/W RθJT value and measured case temperature.
Can this device be used in parallel configurations?
Yes - the matched forward voltage characteristics (VFM = 0.7V ±0.05V at 7.5A) and symmetrical dual-element layout support current sharing in parallel configurations. However, individual trace routing and thermal coupling must be balanced; unequal copper area or temperature gradients will cause imbalance exceeding 15% at full load.
Is the D²PAK package compatible with standard reflow profiles?
Yes - the MBRB1545CT-T's tin-plated terminals meet IPC-J-STD-020 moisture sensitivity Level 1 and are qualified for lead-free reflow with peak temperatures up to 260°C. Pre-bake is not required, and the package withstands standard ramp-soak-reflow profiles without delamination or solder wicking issues.
Does this part have avalanche energy rating specifications?
No - the MBRB1545CT-T datasheet does not specify single-pulse avalanche energy (EAS) or repetitive avalanche ratings. It relies on its 150A IFSM rating and guard ring construction for transient robustness, but is not characterized for unclamped inductive switching events. External clamping or snubbers are recommended for such conditions.
MBRB1545CT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- 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:
- 700 mV @ 7.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 30 ns
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
MBRB1545CT-T FAQ
1.How can I place an order for MBRB1545CT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MBRB1545CT-T 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 MBRB1545CT-T reliable?
The price and inventory of MBRB1545CT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBRB1545CT-T is usually 5 days.
3.What payment methods are accepted for MBRB1545CT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBRB1545CT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBRB1545CT-T?
MBRB1545CT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBRB1545CT-T 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 MBRB1545CT-T?
For technical support, including MBRB1545CT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBRB1545CT-T requirements.
6.How does Aetrix verify that MBRB1545CT-T is sourced from the original manufacturer or authorized distributors?
All MBRB1545CT-T 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 MBRB1545CT-T meets industry standards.
7.What is the process for return or replacement of MBRB1545CT-T?
All MBRB1545CT-T units undergo pre-shipment inspection (PSI). If there is an issue with MBRB1545CT-T, 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 MBRB1545CT-T part is unused and in its original packaging.
Return procedure for MBRB1545CT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBRB1545CT-T Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
