FMMT493-TP Equivalent & Substitute Parts Reference

Part Overview

The FMMT493-TP by Micro Commercial Co is an NPN Bipolar Junction Transistor (BJT) in the Transistors, Bipolar (BJT) category. It is characterized by a 100 V collector-emitter breakdown voltage, 1 A maximum collector current, 150 MHz transition frequency, and 250 mW power dissipation, packaged in a surface-mount SOT-23 case. The part is currently active and available in bulk packaging.

When this exact part is unavailable, it is necessary to consider alternative models that match the essential electrical and mechanical parameters to ensure proper circuit operation and physical compatibility.

Key Parameters

Manufacturer Part Number	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	Product Status
FMMT493-TP	NPN	100 V	1 A	600mV @ 100mA, 1A	100nA (ICBO)	100 @ 1mA, 10V	250 mW	150MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23	Active

Substitute Part Grouping Explanation

Alternative parts are selected strictly based on matching the following essential parameters: NPN polarity, 100 V collector-emitter breakdown voltage, 1 A maximum collector current, package similarity for mechanical compatibility, comparable power dissipation, and transition frequency. Only parts matching these key electrical specifications and the surface-mount package type are listed as equivalent substitutes.

Parameter Comparison

Manufacturer Part Number	Transistor Type	Voltage - Collector Emitter Breakdown (Max)	Current - Collector (Ic) (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	Product Status
FMMT493-TP	NPN	100 V	1 A	600mV @ 100mA, 1A	100nA (ICBO)	100 @ 1mA, 10V	250 mW	150MHz	-55°C ~ 150°C (TJ)	Surface Mount	TO-236-3, SC-59, SOT-23-3	SOT-23	Active
CPH3240-TL-E	NPN	100 V	1 A	400mV @ 40mA, 400mA	100nA (ICBO)	140 @ 100mA, 5V	900 mW	120MHz	150°C (TJ)	Surface Mount	SC-96	3-CPH	Obsolete
PBSS8110T,215	NPN	100 V	1 A	200mV @ 100mA, 1A	100nA	150 @ 250mA, 10V	480 mW	100MHz	150°C (TJ)	Surface Mount	TO-236-3, SC-59, SOT-23-3	TO-236AB	Active

Engineering Selection Recommendations

Select substitute transistors based on product status (active or obsolete) and available regulatory compliance (RoHS, REACH, ECCN, HTSUS). For current production requirements, PBSS8110T,215 is an active and compliant NPN BJT matching the main parameters. CPH3240-TL-E is categorized as obsolete.

Frequently Asked Questions (FAQ)

Q: Which key parameters must match when substituting NPN BJT transistors in this category?
A: Transistor polarity (NPN), voltage - collector emitter breakdown (100 V), current - collector (1 A max), power rating, transition frequency, and equivalent package/case type.

Q: Is it necessary for the package type to be identical for substitution?
A: The package should be the same or mechanically compatible (e.g., SOT-23, TO-236-3, SC-59, SOT-23-3, TO-236AB) for direct replacement in the same PCB footprint.

Q: How do compliance and part status affect substitution?
A: Active status and compliance certifications (such as RoHS and REACH) are required for ongoing manufacturing and procurement; avoid obsolete parts for new designs.

Q: Are all listed substitutes suitable for every application of FMMT493-TP?
A: Only based on the listed parameters—electrical and mechanical matching as given. No additional qualities are considered.

Q: Can substitutes have different power ratings or transition frequencies?
A: Alternative parts must have equal or higher power and frequency ratings but must not violate the minimum requirements for the application as specified in the key parameters.

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