All prices are in US dollars.
Digi-Key Part Number MMBTA42FSDKR-ND
Price Break Unit Price Extended Price
1 0.30000 0.30
10 0.24600 2.46
100 0.13030 13.03
500 0.08570 42.85
1,000 0.05839 58.39
Quantity Available Digi-Key Stock: 35,036
Can ship immediately

Manufacturer Standard Lead Time 6 Weeks
Manufacturer Part Number


Description TRANS NPN 300V 0.5A SOT-23
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)

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
Quantity Unit Price Extended Price

Quantity Item Number ? Customer Reference

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 - Bipolar (BJT) - Single

Series -
Packaging ? Digi-Reel®?
Transistor Type NPN
Current - Collector (Ic) (Max) 500mA
Voltage - Collector Emitter Breakdown (Max) 300V
Vce Saturation (Max) @ Ib, Ic 500mV @ 2mA, 20mA
Current - Collector Cutoff (Max) 100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce 40 @ 30mA, 10V
Power - Max 240mW
Frequency - Transition 50MHz
Mounting Type Surface Mount
Package / Case TO-236-3, SC-59, SOT-23-3
Supplier Device Package SOT-23-3
Online Catalog NPN Transistors
Other Names MMBTA42FSDKR
Alternate Package | This part is also available in the following packaging:
Digi-Key Part Number Manufacturer Part Number Manufacturer Packaging Quantity Available Unit Price Minimum Quantity
MMBTA42FSTR-ND MMBTA42 Fairchild Semiconductor Tape & Reel (TR)? 33,000 - Immediate
0.05106 3,000
MMBTA42FSCT-ND MMBTA42 Fairchild Semiconductor Cut Tape (CT)? 35,036 - Immediate
0.30000 1

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 Number Manufacturer Part Number Manufacturer Packaging Quantity Available Unit Price Minimum Quantity
KST42MTFDKR-ND KST42MTF Fairchild Semiconductor Digi-Reel®? 4,110 - Immediate
900,000 - Factory Stock
Digi-Reel® 1
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06:43:17 7/1/2016