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Product Index > Discrete Semiconductor Products > Transistors (BJT) - Single > Fairchild Semiconductor MMBTA42

All prices are in US dollars.
Digi-Key Part NumberMMBTA42FSDKR-ND
Price BreakUnit PriceExtended Price
Quantity Available Digi-Key Stock: 31,405
Can ship immediately

Manufacturer Part Number


DescriptionTRANS NPN 300V 0.5A SOT-23
Lead Free Status / RoHS StatusLead free / RoHS Compliant

A $7.00 reeling fee will be applied to each reel ordered. Digi-Reels are a custom product and are non-cancelable and non-returnable.

Digi-Reel Pricing
QuantityUnit Price
Extended Price

QuantityItem Number  ? Customer Reference
MMBTA42 Fairchild Semiconductor | MMBTA42FSDKR-ND DigiKey Electronics

Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

When requested quantity exceeds displayed pricing table quantities, a lesser unit price may appear on your order.
You may submit a request for quotation on quantities which are greater than those displayed in the pricing table.

Datasheets MPSA42, MMBTA42, PZTA42
Molded Pkg, SUPERSOT, 3 Lead Drawing
Product Photos SOT-23-3
PCN Design/Specification Mold Compound 12/Dec/2007
PCN Assembly/Origin SOT23 Manufacturing Source 31/May2013
Assembly Site Addition 20/Jul/2015
PCN Packaging Binary Year Code Marking 15/Jan/2014
EDA / CAD Models ?  Download from Accelerated Designs
Standard Package ? 1

Discrete Semiconductor Products


Transistors (BJT) - Single

Packaging ? Digi-Reel® ? 
Transistor TypeNPN
Current - Collector (Ic) (Max)500mA
Voltage - Collector Emitter Breakdown (Max)300V
Vce Saturation (Max) @ Ib, Ic500mV @ 2mA, 20mA
Current - Collector Cutoff (Max)100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce40 @ 30mA, 10V
Power - Max240mW
Frequency - Transition50MHz
Mounting TypeSurface Mount
Package / CaseTO-236-3, SC-59, SOT-23-3
Supplier Device PackageSOT-23
Online CatalogNPN Transistors
Alternate Package | This part is also available in the following packaging:
Digi-Key Part NumberManufacturer Part NumberManufacturerPackagingQuantity AvailableUnit PriceMinimum Quantity
MMBTA42FSTR-NDMMBTA42Fairchild SemiconductorTape & Reel (TR) ? 30,000 - Immediate
MMBTA42FSCT-NDMMBTA42Fairchild SemiconductorCut Tape (CT) ? 31,405 - Immediate
MMBTA42_D87Z-NDMMBTA42_D87ZFairchild SemiconductorTape & Reel (TR) ? 0

Tape & Reel, Cut Tape and Digi-Reels are all derived from the same manufacturer’s part number. Inventory from Tape & Reel is used to fulfill Cut Tape and Digi-Reel orders and will impact the total quantity available.

Direct Substitute ? 
Digi-Key Part NumberManufacturer Part NumberManufacturerPackagingQuantity AvailableUnit PriceMinimum Quantity
KST42MTFDKR-NDKST42MTFFairchild SemiconductorDigi-Reel® ? 45,609 - Immediate
519,000 - Factory Stock
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4:43:14 11/29/2015