MBRS120T3 ON Semiconductor Diode (Diodes Moulded) In Stock
ON Semiconductor MBRS120T3 is a Schottky rectifier diode in a 2-pin SMB surface-mount package rated at 1 A forward current with a maximum forward voltage of 0.5 V and 20 V breakdown voltage, optimized for freewheeling and power rectification applications.
- Manufacturer
- ON Semiconductor
- Package
- Diodes Moulded
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- MBRS120T3 Datasheet PDF
- Category
- Diode
- Price
- From $0.0390(MOQ 1)
- Temp Range
- -65.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MBRS120T3?
- Ultra-low forward voltage drop of 0.5 V maximum at 1 A, reducing conduction losses in power rectifier and freewheeling circuits
- SMB (DO-214AA) 2-pin surface-mount package enabling space-efficient PCB placement with good thermal dissipation
- Silicon Schottky diode construction rated for 20 V breakdown voltage making it ideal for low-voltage DC-DC converter output rectification
What is MBRS120T3 used for?
The MBRS120T3 Schottky rectifier diode is used as a freewheeling diode in DC-DC converters, switching power supplies, and motor drive circuits where its 0.5 V low forward voltage minimizes power loss. It is commonly applied in synchronous rectification stages, output diode positions in buck converters, and reverse polarity protection circuits operating at voltages up to 20 V. The SMB surface-mount package makes it suitable for compact, high-density power management PCB layouts in industrial and consumer electronics.
What are the specifications of MBRS120T3?
| Pbfree Code | No |
| Manufacturer Package Code | 403A-03 |
| YTEOL | 0 |
| Additional Feature | FREE WHEELING DIODE |
| Application | POWER |
| Breakdown Voltage-Min | 20V |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 0.5V |
| JEDEC-95 Code | DO-214AA |
| JESD-30 Code | R-PDSO-C2 |
| JESD-609 Code | e0 |
| Non-rep Pk Forward Current-Max | 40A |
| Number of Elements | 1 |
| Number of Phases | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 20V |
| Reverse Current-Max | 1000 µA |
| Reverse Test Voltage | 20V |
| Surface Mount | YES |
| Technology | SCHOTTKY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | C BEND |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Diodes Moulded |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.80 |
Where can I find the MBRS120T3 datasheet?
MBRS120T3 Datasheet DownloadOfficial datasheet from ON Semiconductor
What are equivalent replacements for MBRS120T3?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What forward voltage and breakdown voltage ratings define the MBRS120T3's performance?
The MBRS120T3 has a maximum forward voltage drop of 0.5 V at 1 A forward current and a minimum breakdown voltage of 20 V. This low forward voltage drop is a characteristic Schottky diode advantage that reduces conduction losses in switching power supply rectifier and freewheeling circuits compared to standard silicon PN junction diodes with 0.7 V forward drops.
How does the MBRS120T3 function as a freewheeling diode in a DC motor drive circuit?
In a DC motor drive circuit, the MBRS120T3 is placed in anti-parallel with the switching transistor to clamp the inductive kickback voltage generated when the motor winding current is interrupted. Its 0.5 V forward voltage and fast Schottky switching characteristic limit voltage spikes to a safe level, protecting the switching device. The 1 A current rating suits small DC motor drive stages operating from supply rails up to 20 V.
Which SMT package does the MBRS120T3 use, and how does that affect PCB layout?
The MBRS120T3 is housed in the SMB (DO-214AA) 2-pin surface-mount package, which provides a larger die attach area and better thermal dissipation than smaller SOD-123 or SOD-323 packages. The SMB footprint measures approximately 5.28 mm x 3.56 mm, offering improved power handling at 1 A continuous current while remaining compatible with standard SMT reflow soldering processes on high-density PCB layouts.
When is the MBRS120T3 preferred over a 1N4001 for output rectification in a 5 V power supply?
The MBRS120T3 Schottky diode is preferred over a 1N4001 in a 5 V supply because its 0.5 V forward voltage drop is roughly half the 1N4001's 1 V drop, directly improving output efficiency. For a 1 A load at 5 V, this 0.5 V difference reduces diode power dissipation by 500 mW, which is significant in battery-powered or thermally constrained designs. The MBRS120T3 SMB surface-mount form also suits modern automated PCB assembly better than the 1N4001 through-hole package.
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Why Buy from FindMyChip
About ON Semiconductor
ON Semiconductor (onsemi) provides intelligent power and sensing technologies for automotive, industrial, IoT, and cloud infrastructure applications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1200 | $0.12 |
| 334+ | $0.1000 | $33.40 |
| 371+ | $0.0900 | $33.39 |
| 557+ | $0.0600 | $33.42 |
| 668+ | $0.0540 | $36.07 |
| 3705+ | $0.0390 | $144.50 |
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