RB491DT146 RB491DT146 is a Schottky rectifier diode rated for 20V reverse voltage and 1A average rectified current. It features a low forward voltage of 450mV at 1A and is housed in a surface-mount SMD3 package.
Mfr Part #:

RB491DT146

Available from 2 distributors
Mfr Name: ROHM Semiconductor
ROHM Semiconductor
RB491DT146 is a Schottky rectifier diode rated for 20V reverse voltage and 1A average rectified current. It features a low forward voltage of 450mV at 1A and is housed in a surface-mount SMD3 package.
Total Stock: 6,020 pcs
$ Price Range: $0.13 - $0.70

RB491DT146 Available from 2 distributors

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
6,000 pcs
6000 pcs On Request 1 On Request On Request 0544+ On Request On Request
Non-Authorised Inventory information
20 pcs
20 pcs On Request 1 On Request On Request On Request On Request On Request

RB491DT146 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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Manufacturer Name
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Technology
Voltage
Voltage - Forward (Vf) (Max) @ If

RB491DT146 Description

Short technical summary and product information.

The RB491DT146 is a Schottky barrier diode designed for low-voltage, high-speed rectification applications. It offers a maximum reverse voltage of 20V and can handle an average rectified current of 1A. The forward voltage is typically 450mV at 1A forward current, enabling efficient operation with minimal power loss.

 

The diode is characterized by fast recovery speed (≤500ns, >200mA), making it suitable for switching power supplies and other high-frequency circuits. It operates over a junction temperature range up to 125°C.

 

The device is supplied in a surface-mount SMD3 package, which is compatible with TO-236-3, SC-59, and SOT-23-3 footprints. This compact package is ideal for space-constrained designs.

RB491DT146 Quick Information

Product Type: Schottky Diode
Canonical Name: RB491DT146 Schottky Diode 20V 1A Surface Mount SMD3
Subcategory: Rectifier Diode

RB491DT146 Compliance

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

RB491DT146 Estimated Pricing

Qty Low High
1+ $0.70 $0.70
10+ $0.43 $0.43
100+ $0.28 $0.28
500+ $0.21 $0.21
1,000+ $0.19 $0.19
3,000+ $0.16 $0.16
9,000+ $0.15 $0.15
24,000+ $0.13 $0.13

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

RB491DT146 Features

  • Schottky diode with 20V reverse voltage.
  • 1A average rectified current rating.
  • Low forward voltage of 450mV at 1A.
  • Fast recovery speed under 500ns.
  • Surface-mount SMD3 package for compact designs.

RB491DT146 Applications

  • Low-voltage power supply rectification.
  • High-frequency switching power converters.
  • Reverse polarity protection circuits.
  • Freewheeling diode in inductive loads.
  • DC-DC converter output rectification.

RB491DT146 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the maximum reverse voltage of the RB491DT146?

The maximum reverse voltage (Vr) is 20V.

What is the forward voltage drop at 1A?

The maximum forward voltage is 450mV at 1A forward current.

What is the average rectified current rating?

The average rectified current (Io) is 1A.

What package does the RB491DT146 come in?

It is supplied in a surface-mount SMD3 package, compatible with TO-236-3, SC-59, and SOT-23-3.

What is the operating temperature range?

The maximum junction operating temperature is 125°C.

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