LM3940IS-3.3/NOPB is out of stock and can be placed on backorder.
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Linear Voltage Regulator IC Negative Adjustable 1 Output 150mA TO-263 (DDPAK-3)
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Linear Voltage Regulator IC Negative Adjustable 1 Output 150mA TO-263 (DDPAK-3)
What is a Voltage Regulator Another Teaching Moment | Digi-Key Electronics

LM3940IS-3.3/NOPB

DigiKey Part Number
LM3940IS-3.3/NOPB-ND
Manufacturer
Manufacturer Product Number
LM3940IS-3.3/NOPB
Description
IC REG LINEAR 3.3V 1A TO263
Manufacturer Standard Lead Time
12 Weeks
Customer Reference
Detailed Description
Linear Voltage Regulator IC Negative Adjustable 1 Output 150mA TO-263 (DDPAK-3)
Datasheet
 Datasheet
EDA/CAD Models
LM3940IS-3.3/NOPB Models
Product Attributes
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Category
Current - Output
Mfr
PSRR
15dB (1kHz)
Packaging
Tube
Control Features
Adj/EN
Part Status
Active
Protection Features
Antisaturation, Over Current, Over Temperature
Output Configuration
Operating Temperature
-20°C ~ 100°C
Output Type
Grade
Automotive
Number of Regulators
1
Qualification
AEC-Q100
Voltage - Input (Max)
150V
Mounting Type
Surface Mount
Voltage - Output (Min/Fixed)
15V
Package / Case
TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
Voltage - Output (Max)
Supplier Device Package
TO-263 (DDPAK-3)
Voltage Dropout (Max)
0.114V @ 20mA
Base Product Number
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (9)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
MIC2937A-3.3WU-TRMicrochip Technology22MIC2937A-3.3WU-TR-ND$3.19000Similar
MIC2937A-3.3WUMicrochip Technology0576-1131-ND$3.19000Similar
MIC2940A-3.3WUMicrochip Technology0576-1135-ND$2.67000Similar
MIC2940A-3.3WU-TRMicrochip Technology0MIC2940A-3.3WU-TR-ND$2.67000Similar
TC1262-3.3VEBTRMicrochip Technology0TC1262-3.3VEBTR-ND$1.16000Similar
In-Stock: 0
45 estimated in stock on 13-Nov-2026
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All prices are in USD
Tube
QuantityUnit PriceExt Price
1$2.36000$2.36
10$1.74800$17.48
45$1.51667$68.25
135$1.40000$189.00
270$1.34285$362.57
540$1.29585$699.76
1,035$1.25930$1,303.38
2,520$1.21901$3,071.91
5,040$1.19390$6,017.26
Note: Due to DigiKey value-add services the packaging type may change when product is purchased at quantities beneath the standard package.
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