FMMT558TA FMMT558TA is a PNP high voltage transistor from Diodes Incorporated. It features 400V collector-emitter voltage, 150mA continuous collector current, and 500mW power dissipation in a surface-mount SOT-23-3 package.
Mfr Part #:

FMMT558TA

Available from 5 distributors
Mfr Name: Diodes Incorporated
Diodes Incorporated
FMMT558TA is a PNP high voltage transistor from Diodes Incorporated. It features 400V collector-emitter voltage, 150mA continuous collector current, and 500mW power dissipation in a surface-mount SOT-23-3 package.
Total Stock: 196,633 pcs
$ Price Range: $0.20 - $0.75

FMMT558TA Available from 5 distributors

Authorised
Non-Authorised

FMMT558TA Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Base Current (IB)
Carrier Type
Collector Current - Peak Pulse
Collector-Base Voltage (VCBO)
Collector-Emitter Voltage (VCEO)
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Emitter-Base Voltage (VEBO)
Frequency
Halogen Free
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Operating Temperature
Power
Reel Size
SVHC Present
Standard Package Quantity
Storage Temperature
Supplier Device Package
Tape & Reel
Tape Width
Terminal Finish
Thermal Resistance Junction to Ambient (RθJA)
Thermal Resistance Junction to Lead (RθJL)
Transistor Type
Vce Saturation (Max) @ Ib, Ic
Voltage
Weight

FMMT558TA Description

Short technical summary and product information.

The FMMT558TA is a PNP high voltage bipolar junction transistor manufactured by Diodes Incorporated. It is designed for applications requiring up to 400V collector-emitter voltage and 150mA continuous collector current, with a peak pulse capability of 500mA. The transistor offers a minimum DC current gain of 100 at 50mA and 10V, and a typical transition frequency of 50MHz, making it suitable for switching and amplification in high-voltage circuits. The device is housed in a compact SOT-23-3 surface-mount package, with a power dissipation of 500mW. It is RoHS3 compliant, lead-free, and halogen-free, meeting environmental standards. The operating temperature range is -55°C to 150°C. The FMMT558TA is supplied in tape and reel packaging with 3000 units per reel, suitable for automated assembly. Common applications include high-voltage switching, driver circuits, and load switching in power supplies and industrial controls.

FMMT558TA Quick Information

Product Type: Bipolar Junction Transistor (BJT)
Series: FMMT558
Canonical Name: FMMT558TA - 400V PNP High Voltage Transistor
Subcategory: High Voltage

FMMT558TA Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): Level 1 (Unlimited) per J-STD-020
REACH Status: REACH Unaffected
Lead Free: Lead-Free

FMMT558TA Estimated Pricing

Qty Low High
1+ $0.75 $0.75
10+ $0.46 $0.46
100+ $0.29 $0.29
500+ $0.22 $0.22
1,000+ $0.20 $0.20
3,000+ $0.20 $0.20

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

FMMT558TA Features

  • High voltage PNP transistor with 400V VCEO.
  • Continuous collector current rating of 150mA.
  • 500mW power dissipation in SOT-23-3 package.
  • RoHS3 compliant and halogen-free design.
  • 50MHz typical transition frequency.

FMMT558TA Applications

  • High-voltage switching in power supplies.
  • Driver circuits for relays and solenoids.
  • Load switching in industrial control systems.
  • General purpose amplification in high-voltage circuits.

FMMT558TA FAQs

7 frequently asked questions generated from this part’s specifications.
What is the collector-emitter voltage rating of the FMMT558TA?

The collector-emitter voltage (VCEO) is 400V (absolute maximum).

What is the package type of the FMMT558TA?

The FMMT558TA is housed in a SOT-23-3 surface-mount package.

What is the operating temperature range of the FMMT558TA?

The operating temperature range is -55°C to 150°C (junction).

Is the FMMT558TA RoHS compliant?

Yes, the FMMT558TA is RoHS3 compliant and lead-free.

What is the continuous collector current rating of the FMMT558TA?

150mA continuous, 500mA peak pulse.

What is the DC current gain (hFE) of the FMMT558TA?

Minimum hFE of 100 at 50mA, 10V.

What is the power dissipation of the FMMT558TA?

500mW maximum.

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