FMMT491QTA is out of stock and can be placed on backorder.
Available Substitutes:

Direct


Diodes Incorporated
In Stock: 0
Unit Price: $0.44000
Datasheet

Direct


Diodes Incorporated
In Stock: 404
Unit Price: $0.60000
Datasheet

Parametric Equivalent


Diodes Incorporated
In Stock: 0
Unit Price: $0.15246

Parametric Equivalent


Diodes Incorporated
In Stock: 0
Unit Price: $0.60000
Datasheet

Parametric Equivalent


Diodes Incorporated
In Stock: 4,282
Unit Price: $0.67000
Datasheet

Direct


MCC (Micro Commercial Components)
In Stock: 0
Unit Price: $0.33000
Datasheet

Similar


Rohm Semiconductor
In Stock: 9,124
Unit Price: $0.82000
Datasheet

Similar


Rohm Semiconductor
In Stock: 14,152
Unit Price: $0.78000
Datasheet

Similar


Nexperia USA Inc.
In Stock: 0
Unit Price: $0.12000
Datasheet

Similar


Nexperia USA Inc.
In Stock: 274
Unit Price: $0.13000
Datasheet

Similar


Nexperia USA Inc.
In Stock: 0
Unit Price: $0.12000
Datasheet

Similar


MCC (Micro Commercial Components)
In Stock: 2,540
Unit Price: $0.15000
Datasheet

Similar


onsemi
In Stock: 131,218
Unit Price: $0.13000
Datasheet

Similar


onsemi
In Stock: 7,736
Unit Price: $0.14000
Datasheet
Bipolar (BJT) Transistor NPN 60 V 1 A 150MHz 500 mW Surface Mount SOT-23-3
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

FMMT491QTA

DigiKey Part Number
FMMT491QTADITR-ND - Tape & Reel (TR)
FMMT491QTADICT-ND - Cut Tape (CT)
FMMT491QTADIDKR-ND - Digi-Reel®
Manufacturer
Manufacturer Product Number
FMMT491QTA
Description
TRANS NPN 60V 1A SOT-23-3
Manufacturer Standard Lead Time
44 Weeks
Customer Reference
Detailed Description
Bipolar (BJT) Transistor NPN 60 V 1 A 150MHz 500 mW Surface Mount SOT-23-3
Datasheet
 Datasheet
EDA/CAD Models
FMMT491QTA Models
Product Attributes
Filter Similar Products
Show Empty Attributes
Category
DC Current Gain (hFE) (Min) @ Ic, Vce
100 @ 500mA, 5V
Mfr
Power - Max
500 mW
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Frequency - Transition
150MHz
Part Status
Active
Operating Temperature
-55°C ~ 150°C (TJ)
Transistor Type
Mounting Type
Surface Mount
Current - Collector (Ic) (Max)
1 A
Package / Case
TO-236-3, SC-59, SOT-23-3
Voltage - Collector Emitter Breakdown (Max)
60 V
Supplier Device Package
SOT-23-3
Vce Saturation (Max) @ Ib, Ic
250mV @ 100mA, 1A
Base Product Number
Current - Collector Cutoff (Max)
100nA
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (27)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
DNBT8105-7Diodes Incorporated0DNBT8105DICT-ND$0.44000Direct
ZXTN2038FTADiodes Incorporated404ZXTN2038FCT-ND$0.60000Direct
FMMT491QTCDiodes Incorporated0FMMT491QTC-ND$0.15246Parametric Equivalent
FMMT491TADiodes Incorporated0FMMT491CT-ND$0.60000Parametric Equivalent
FMMT491TCDiodes Incorporated4,28231-FMMT491TCCT-ND$0.67000Parametric Equivalent
In-Stock: 0
3,000 expected in stock on 14-Sep-2026
Request Stock Notification
All prices are in USD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$0.81000$0.81
10$0.50400$5.04
25$0.42040$10.51
50$0.36820$18.41
100$0.32410$32.41
* All Digi-Reel orders will add a $7.00 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
3,000$0.18934$568.02
9,000$0.16508$1,485.72
Tariff Status: Tariff may apply if shipping to the United States. Tariff costs are calculated and will be displayed in the shopping cart.