MMBT3904-HF is out of stock and can be placed on backorder.
Available Substitutes:

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Comchip Technology
In Stock: 0
Unit Price: $0.18000
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Diodes Incorporated
In Stock: 0
Unit Price: $0.12000
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Diodes Incorporated
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Unit Price: $0.14000
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MCC (Micro Commercial Components)
In Stock: 0
Unit Price: $0.10000
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onsemi
In Stock: 2,139,400
Unit Price: $0.12000
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onsemi
In Stock: 54,000
Unit Price: $0.13000
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onsemi
In Stock: 11,295
Unit Price: $0.23000
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onsemi
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Unit Price: $0.13000
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onsemi
In Stock: 72,000
Unit Price: $0.12000
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Rohm Semiconductor
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Unit Price: $0.30000
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Central Semiconductor Corp
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Unit Price: $0.43000
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Central Semiconductor Corp
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Unit Price: $0.82000
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Nexperia USA Inc.
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Nexperia USA Inc.
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Datasheet
Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 200 mW Surface Mount SOT-23-3
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.

MMBT3904-HF

DigiKey Part Number
641-1683-2-ND - Tape & Reel (TR)
641-1683-1-ND - Cut Tape (CT)
641-1683-6-ND - Digi-Reel®
Manufacturer
Manufacturer Part Number
MMBT3904-HF
Description
TRANS NPN 40V 0.2A SOT-23-3
Manufacturer Standard Lead Time
10 Weeks
Customer Reference
Detailed Description
Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 200 mW Surface Mount SOT-23-3
Datasheet
 Datasheet
Product Attributes
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Category
DC Current Gain (hFE) (Min) @ Ic, Vce
100 @ 10mA, 1V
Mfr
Power - Max
200 mW
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
Frequency - Transition
300MHz
Part Status
Active
Operating Temperature
-55°C ~ 150°C (TJ)
Transistor Type
Mounting Type
Surface Mount
Current - Collector (Ic) (Max)
200 mA
Package / Case
TO-236-3, SC-59, SOT-23-3
Voltage - Collector Emitter Breakdown (Max)
40 V
Supplier Device Package
SOT-23-3
Vce Saturation (Max) @ Ib, Ic
300mV @ 5mA, 50mA
Base Product Number
Current - Collector Cutoff (Max)
100nA (ICBO)
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (17)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
MMBT3904-GComchip Technology0641-1941-2-ND$0.18000Direct
MMBT3904-7-FDiodes Incorporated0MMBT3904-FDITR-ND$0.12000Direct
BC848A-7-FDiodes Incorporated0BC848A-FDITR-ND$0.14000Similar
MMBT3904-TPMCC (Micro Commercial Components)0MMBT3904TPMSTR-ND$0.10000Direct
MMBT3904LT1Gonsemi2,139,400MMBT3904LT1GOSTR-ND$0.12000Direct
Available To Order
Factory Stock: 6,000
3,000 estimated in stock on 28-Dec-2026

This is stock that is available at the supplier which may be available to DigiKey upon receipt of order.

All prices are in USD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$0.16000$0.16
10$0.10000$1.00
100$0.06160$6.16
500$0.04470$22.35
1,000$0.03921$39.21
* All Digi-Reel orders will add a $7.00 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
3,000$0.03220$96.60
6,000$0.02865$171.90
9,000$0.02684$241.56
15,000$0.02481$372.15
21,000$0.02360$495.60
30,000$0.02242$672.60
75,000$0.01984$1,488.00
150,000$0.01825$2,737.50
300,000$0.01691$5,073.00
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.