MBR1240MFST1G Schottky rectifier diode rated for 40V reverse voltage and 12A average current. Features low forward voltage drop of 680mV at 12A in a compact 5-DFN (5x6) surface mount package.
Mfr Part #:

MBR1240MFST1G

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
Schottky rectifier diode rated for 40V reverse voltage and 12A average current. Features low forward voltage drop of 680mV at 12A in a compact 5-DFN (5x6) surface mount package.
Total Stock: 25,500 pcs
$ Price Range: $0.40

MBR1240MFST1G Available from 1 distributor

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MBR1240MFST1G Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
ESD Rating (Human Body Model)
ESD Rating - Machine Model
Flammability Rating
Halogen Free
Lead Finish
Mounting Type
Non-Repetitive Peak Surge Current (IFSM)
Operating Temperature
Peak Repetitive Forward Current (IFRM)
Speed
Standard Package Quantity
Storage Temperature
Storage Temperature Range
Supplier Device Package
Tape & Reel
Technology
Thermal Resistance Junction-to-Case (RθJC)
Unclamped Inductive Switching Energy (EAS)
Voltage
Voltage - DC Reverse (VRRM)

MBR1240MFST1G Description

Short technical summary and product information.

The MBR1240MFST1G is a Schottky barrier rectifier diode from On Semiconductor's SWITCHMODE power rectifier family. It is designed for low power loss and high efficiency rectification in power supply and DC-DC converter applications. The device is rated for a maximum reverse voltage of 40V and can handle an average rectified forward current of 12A with a peak repetitive forward current of 20A.

 

Key electrical characteristics include a low forward voltage drop of 680mV maximum at 12A, enabling efficient operation. The diode offers fast recovery with a reverse recovery time of 500ns or less, making it suitable for high-frequency switching circuits. It also features a high surge current capability of 150A non-repetitive peak and an unclamped inductive switching energy rating of 150mJ. The device is protected against electrostatic discharge with ESD ratings of 3B (HBM) and M4 (MM).

 

The MBR1240MFST1G is housed in an 8-PowerTDFN, 5-lead surface mount package (5-DFN 5x6) with a lead finish of 100% matte tin. The package is designed to allow inspection and probing after board mounting. The operating junction temperature range is -55°C to 150°C, and the device is RoHS3 compliant and meets MSL 1 requirements.

 

This part is discontinued and not recommended for new designs. For automotive applications, the NRVB1240MFS variant is available with AEC-Q101 qualification.

MBR1240MFST1G Quick Information

Product Type: Schottky Rectifier
Series: MBR1240MFS
Canonical Name: Schottky Diode 40V 12A 5-DFN (5x6)
Subcategory: Rectifiers - Single

MBR1240MFST1G Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

MBR1240MFST1G Estimated Pricing

Qty Low High
1,500+ $0.40 $0.40

Estimated market price range - modelled values for guidance only, not live distributor offers.

MBR1240MFST1G Features

  • Schottky diode for 40V reverse voltage.
  • 12A average rectified current rating.
  • Low forward voltage drop of 680mV.
  • Fast recovery (<500ns) for high frequency.
  • Surface mount 5-DFN (5x6) package.

MBR1240MFST1G Applications

  • Used in power supply rectification circuits.
  • Ideal for DC-DC converter output stages.
  • Suitable for freewheeling and clamping diodes.
  • Automotive applications using NRVB variant.
  • High efficiency power management systems.

MBR1240MFST1G FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum reverse voltage rating of MBR1240MFST1G?

40V.

What is the average rectified current rating?

12A.

What is the forward voltage drop at rated current?

Maximum 680mV at 12A.

What is the reverse recovery time?

Fast recovery type with ≤500ns reverse recovery time.

What package does MBR1240MFST1G come in?

8-PowerTDFN, 5 Leads (5-DFN 5x6).

What is the operating temperature range?

-55°C to 150°C.

Is this part RoHS compliant?

Yes, it is RoHS3 compliant (Pb-Free).

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