MR851 The On Semiconductor MR851 is a 100V, 3A fast recovery rectifier diode. It features a reverse recovery time of 300 ns and is packaged in an axial lead DO-201AA case.
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MR851

Available from 3 distributors
Mfr Name: On Semiconductor
On Semiconductor
The On Semiconductor MR851 is a 100V, 3A fast recovery rectifier diode. It features a reverse recovery time of 300 ns and is packaged in an axial lead DO-201AA case.
Total Stock: 328 pcs

MR851 Available from 3 distributors

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150 pcs
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145 pcs
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33 pcs
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MR851 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Lead Finish
Lead Style
Medical Grade
Mounting Type
Non-Repetitive Peak Reverse Voltage
Non-Repetitive Peak Surge Current
Operating Temperature
Peak Repetitive Reverse Voltage
RMS Reverse Voltage
Reverse Recovery Time (trr)
Speed
Storage Temperature
Supplier Device Package
Tape & Reel
Tape and Reel
Technology
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Voltage
Weight

MR851 Description

Short technical summary and product information.

The On Semiconductor MR851 is a fast recovery rectifier diode designed for applications requiring high efficiency at switching frequencies up to 250 kHz. It offers a peak repetitive reverse voltage of 100V and an average rectified forward current of 3.0A.

 

Electrical characteristics include a forward voltage of 1.04V typical (1.25V maximum at 3A) and a reverse recovery time of 300 ns. The device can withstand non-repetitive surge currents up to 100A. Thermal resistance is rated at 28°C/W junction-to-ambient and 5.5°C/W junction-to-lead when mounted on FR-4 PCB with minimum pad size.

 

The MR851 is housed in a DO-201AA (DO-27) axial lead package and is Pb-Free (RoHS compliant per datasheet). It is suitable for DC power supplies, inverters, converters, ultrasonic systems, choppers, and free-wheeling diode applications.

MR851 Quick Information

Product Type: Fast Recovery Rectifier
Series: MR85x
Canonical Name: On Semiconductor MR851 Fast Recovery Rectifier
Subcategory: Rectifiers - Single

MR851 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited (DB value, unverified)
REACH Status: Compliant
Lead Free: No

MR851 Features

  • 100V peak repetitive reverse voltage.
  • 3A average rectified forward current.
  • Fast recovery time of 300 ns.
  • Axial lead DO-201AA package.
  • Pb-Free and RoHS compliant.

MR851 Applications

  • DC power supplies and inverters.
  • Converters and ultrasonic systems.
  • Choppers and free wheeling diodes.
  • Low RF interference circuits.

MR851 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the MR851?

The MR851 has a peak repetitive reverse voltage (VRRM) of 100V and a non-repetitive peak reverse voltage (VRSM) of 150V.

What is the current rating of the MR851?

The average rectified forward current (IO) is 3.0A at TA=80°C, with a non-repetitive peak surge current (IFSM) of 100A.

What is the forward voltage of the MR851?

The forward voltage (VF) is typically 1.04V and maximum 1.25V at 3A and 25°C.

What is the reverse recovery time of the MR851?

The reverse recovery time (trr) is 300 ns (datasheet mentions typical 100 ns for the family).

What package does the MR851 come in?

The MR851 is available in a DO-201AA (DO-27) axial lead package.

What is the surge current capability?

The non-repetitive peak surge current (IFSM) is 100A applied at rated load conditions for one cycle.

What is the operating temperature range?

The junction temperature range is -65°C to 125°C.

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