FMMT458QTA NPN high voltage transistor rated for 400V collector-emitter voltage and 225mA continuous collector current in a SOT23-3 surface mount package.
Mfr Part #:

FMMT458QTA

Available from 2 distributors
Mfr Name: Diodes Incorporated
Diodes Incorporated
NPN high voltage transistor rated for 400V collector-emitter voltage and 225mA continuous collector current in a SOT23-3 surface mount package.
Total Stock: 7,135 pcs
$ Price Range: $0.20 - $0.89

FMMT458QTA Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
4,020 pcs
4020 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
3,115 pcs
3115 pcs On Request 1 On Request On Request On Request On Request On Request

FMMT458QTA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Base Current
Collector Current - Peak
Collector-Base Voltage (VCBO)
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
ESD Human Body Model
ESD Machine Model
Emitter-Base Voltage (VEBO)
Frequency
Halogen Free
Mounting Type
Operating Temperature
Package Weight
Power
SVHC Present
Standard Package Quantity
Storage Temperature
Supplier Device Package
Tape & Reel
Terminal Finish
Thermal Resistance Junction-to-Ambient
Thermal Resistance, Junction to Lead
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage

FMMT458QTA Description

Short technical summary and product information.

The FMMT458QTA is an NPN high voltage bipolar junction transistor from Diodes Incorporated, designed for applications requiring up to 400V collector-emitter breakdown voltage. It supports a continuous collector current of 225mA with a peak pulse current capability of 1A, making it suitable for driving loads in high voltage circuits.

 

With a power dissipation of 500mW and a DC current gain (hFE) of minimum 100 at 50mA, this transistor offers reliable performance in linear and switching applications. The transition frequency of 50MHz supports moderate speed switching. The device is housed in a compact SOT23-3 surface mount package, ideal for space-constrained designs.

 

This automotive-compliant variant (FMMT458Q) is fully RoHS3 compliant, lead-free, and halogen-free. It features matte tin plated terminals and is rated for an operating temperature range of -55°C to 150°C. ESD protection is rated at 4000V HBM (Class 3A) and ≥400V MM (Class C).

FMMT458QTA Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Canonical Name: FMMT458QTA NPN High Voltage Transistor
Subcategory: High Voltage Transistor

FMMT458QTA Compliance

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

FMMT458QTA Estimated Pricing

Qty Low High
1+ $0.89 $0.89
10+ $0.56 $0.56
25+ $0.46 $0.46
50+ $0.41 $0.41
100+ $0.36 $0.36
3,000+ $0.22 $0.22
9,000+ $0.20 $0.20

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

FMMT458QTA Features

  • 400V collector-emitter breakdown voltage.
  • 225mA continuous collector current.
  • 500mW power dissipation in SOT23-3.
  • Automotive-compliant variant available.
  • RoHS3 compliant and halogen-free.

FMMT458QTA Applications

  • High voltage switching circuits.
  • Telecommunication line drivers.
  • Power supply auxiliary circuits.
  • LED lighting drivers.

FMMT458QTA FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage of the FMMT458QTA?

400V

What is the continuous collector current rating?

225mA

What package is the FMMT458QTA available in?

SOT23-3 (TO-236-3, SC-59)

What is the operating temperature range?

-55°C to 150°C

Is the FMMT458QTA RoHS compliant?

Yes, it is RoHS3 compliant.

What is the DC current gain (hFE) of this transistor?

Minimum 100 at Ic=50mA, Vce=10V

What is the power dissipation rating?

500mW

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