Name: LM3940ISX-3.3
Brand: Texas Instruments
SKU: LM3940ISX-3-3
Price: 1.9409 USD
Availability: InStock
Rating: 5 (73 reviews)

LM3940ISX-3.3

For Reference Only

Part Number	LM3940ISX-3.3
Manufacturer	Texas Instruments
Description	IC REG LIN 3.3V 1A DDPAK/TO263-3
Datasheet	LM3940ISX-3.3 Specifications
Package	TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
ECAD
In Stock	903,108 piece(s)
Unit Price	$ 1.9409 *
Lead Time	Can Ship Immediately
Estimated Delivery Time	Apr 28 - May 3 (Choose Expedited Shipping)
Request for Quotation

Payment Methods
Delivery Services

Part Number # LM3940ISX-3.3 (PMIC - Voltage Regulators - Linear) is manufactured by Texas Instruments and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

For LM3940ISX-3.3 specifications/configurations, quotation, lead time, payment terms of further enquiries please have no hesitation to contact us. To process your RFQ, please add LM3940ISX-3.3 with quantity into BOM. Heisener.com does NOT require any registration to request a quote of LM3940ISX-3.3.

LM3940ISX-3.3 Specifications

Manufacturer	Texas Instruments
Category	Integrated Circuits (ICs) - PMIC - Voltage Regulators - Linear
Package	TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
ECAD
Series	-
Output Configuration	Positive
Output Type	Fixed
Number of Regulators	1
Voltage - Input (Max)	7.5V
Voltage - Output (Min/Fixed)	3.3V
Voltage - Output (Max)	-
Voltage Dropout (Max)	0.2V @ 100mA
Current - Output	1A
Current - Quiescent (Iq)	-
Current - Supply (Max)	15mA
PSRR	-
Control Features	-
Protection Features	Over Temperature, Short Circuit
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-4, D2Pak (3 Leads + Tab), TO-263AA
Supplier Device Package	DDPAK/TO-263-3

LM3940ISX-3.3 Reviews

Blak*****asin

April 1, 2023

★ ★ ★ ★ ★

I recommend this and would definitely buy it again.

Land*****owery

March 31, 2023

★ ★ ★ ★ ★

I recently became very interested in electronics and I have used several of them. They work great.

Zay*****ierra

March 27, 2023

★ ★ ★ ★ ★

Work Great. Would recommend. Only used 2. So I have 248 extras. Best deal by far that's why I got these.

Este*****Young

March 25, 2023

★ ★ ★ ★ ★

Very much appreciate the thoughtful system to hold multiple orders, including back ordered items, can be shipped at once rather than incremental shipments.

Colett*****astava

March 12, 2023

★ ★ ★ ★ ★

Heisener is on a very short list of companies I highly recommend without any hesitation. From stock, pricing, ease of ordering and great service, they have it all.

Westle*****anueva

March 11, 2023

★ ★ ★ ★ ★

Great communication. A pleasure to do business with.

Quint*****naldson

March 2, 2023

★ ★ ★ ★ ★

There are cheaper ones out there but this one really take the guessing game out.

Write a Review

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LM3940ISX-3.3 Packaging

LM3940ISX-3.3 FAQ

1. How to order LM3940ISX-3.3 on Heisener?

Currently, Heisener only provide peer-to-peer order processing. While you submit the RFQ, our professional agent will contact you with the competitive prices in the global market, and our agent will prompt you to finish the order if you accept our offers.
2. How does Heisener guarantee that LM3940ISX-3.3 is from the original manufacturer or authorized agents?

We have a professional and experienced quality control team to strictly verify and test the LM3940ISX-3.3. All suppliers must pass our qualification reviews before they can publish their products including LM3940ISX-3.3 on Heisener; we pay more attention to the channels and quality of LM3940ISX-3.3 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
3. Are the LM3940ISX-3.3 price and inventory displayed accurate?

The price and inventory of LM3940ISX-3.3 fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.
4. What forms of payment are accepted?

Wire Transfer, PayPal, Alipay, Wechat, Credit Card, Western Union, MoneyGram, and Escrow are all acceptable.

Warm Tips: Some orders in certain payment forms may require handling fee.
5. How is the shipping arranged?

Customers can choose industry-leading freight companies, including DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is also available.

Once your order has been processed for shipment, our salesperson will send you an email advising you of the shipping status and tracking number.

Warm Tips: It may take up to 24 hours for the carriers to display tracking information. Usually, express delivery takes 3-5 days, and registered mail takes 25-60 days.
6. What is the process for return or replacement of LM3940ISX-3.3?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LM3940ISX-3.3 we delivered, we will accept the replacement or return of the LM3940ISX-3.3 only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LM3940ISX-3.3.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations
7.How to contact us to get technical supports, such as LM3940ISX-3.3 pin diagram, LM3940ISX-3.3 datasheet?

If you need any after-sales service, please do not hesitate to contact us.

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LM3940ISX-3.3 Guarantees

Service Guarantees

We guarantee 100% customer satisfaction.

Our experienced sales team and tech support team back our services to satisfy all our customers.

Quality Guarantees

We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

Global Supply Chains - Reliable and Authorized Distributor Resources

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB D# V72:2272_07275604	Texas Instruments	LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK T/R	0
LM3940IS-3.3/NOPB D# V99:2348_07275602	Texas Instruments	LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK Tube	0
LM3940ISX-3.3 D# V36:1790_07275603	Texas Instruments	LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK T/R RoHS: Not Compliant	0
LM3940IS-3.3 D# V36:1790_07275601	Texas Instruments	LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK Tube RoHS: Not Compliant	0

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3/NOPB

D# LM3940IS-3.3/NOPB

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) TO-263 Rail - Rail/Tube (Alt: LM3940IS-3.3/NOPB)

RoHS: Compliant

LM3940IS-3.3

D# LM3940IS-3.3

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) TO-263 Rail - Rail/Tube (Alt: LM3940IS-3.3)

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3	National Semiconductor Corporation		3820
LM3940ISX33	National Semiconductor Corporation		765
LM3940IS-3.3	National Semiconductor Corporation		325
LM3940ISX-3.3/NOPB	National Semiconductor Corporation		562
LM3940IS-3.3/NOPB	National Semiconductor Corporation		246

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3	Texas Instruments	LDO VOLT REG, 1A, 3.3V, TO-263-3	2500
LM3940IS-3.3/NOPB	Texas Instruments	IC, V REG, LINEAR, 3.3V	3732
LM3940ISX-3.3/NOPB	Texas Instruments	LDO VOLT REG, 1A, 3.3V, TO-263-3	2500
LM3940IS-3.3	Texas Instruments	IC, V REG, LINEAR, 3.3V	3732

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

Texas Instruments

Fixed 7.5V 3.3V 1V @ 1A TO-263-3 Dropout Regulators(LDO) RoHS

Part Number

Manufacturer

Description

Stock

LM3940ISX33

National Semiconductor Corporation

RoHS: Not Compliant

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3	Texas Instruments	ship within 1day - D/C	34
LM3940ISX-3.3/NOPB	National Semiconductor Corporation	RoHS (ship within 1day) - D/C 2005+	1925
LM3940IS-3.3/NOPB	National Semiconductor Corporation	RoHS (ship within 1day) - D/C 2010	103

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3 D# LM3940IS-3.3-ND	Texas Instruments	IC REG LIN 3.3V 1A DDPAK/TO263-3	480
LM3940ISX-3.3/NOPB D# LM3940ISX-3.3/NOPBTR-ND	Texas Instruments	IC REG LIN 3.3V 1A DDPAK/TO263-3	2326
LM3940IS-3.3/NOPB D# LM3940IS-3.3/NOPB-ND	Texas Instruments	IC REG LIN 3.3V 1A DDPAK/TO263-3	1601
LM3940ISX-3.3 D# LM3940ISX-3.3TR-ND	Texas Instruments	IC REG LIN 3.3V 1A DDPAK/TO263-3	0

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3 D# LM3940IS-3.3	National Semiconductor Corporation	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	1098
LM3940IS-3.3/NOPB D# LM3940IS-3.3/NOPB	National Semiconductor Corporation	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	2276
LM3940ISX-3.3NOPB D# LM3940ISX-3.3NOPB	National Semiconductor Corporation	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	4152
LM3940ISX-3.3 D# LM3940ISX-3.3	National Semiconductor Corporation	Industry Leading ISO:9001/AS9120A Stocking Distributor of Obsolete & Hard to Find IC's/Semi's, Specializing in Altera/Xilinx. In-House Counterfeit Detection Lab. In Business 20 Years. Free Shipping on Orders Over $250. Buy American, Buy Direct	2816

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB	TINS	In stock shipping within 2days	1507
LM3940IS-3.3/NOPB	National Semiconductor Corporation	In stock shipping within 2days	150
LM3940ISX-3.3	National Semiconductor Corporation	In stock shipping within 2days	35525
LM3940IS-3.3	National Semiconductor Corporation	In stock shipping within 2days	35525

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

D# 3007562

Texas Instruments

LDO, FIXED, 3.3V, 1A, TO-263-3

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

129

LM3940IS-3.3/NOPB

D# 3122101

Texas Instruments

IC, V REG, LINEAR, 3.3V

RoHS: Compliant

Min Qty: 1

Container: Each

233

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

National Semiconductor Corporation

NEW AND ORGINAL. ISRAEL W.HOUSE

955

Part Number	Manufacturer	Description	Stock
LM3940ISX33	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	42340
LM3940ISX33ROHS	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	224
LM3940ISX33P	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	132
LM3940ISX33NOPB	National Semiconductor Corporation	OEM/CM QUOTES ONLY \| NO BROKERS	2233

Part Number	Manufacturer	Description	Stock
LM3940ISX33NO	Texas Instruments	OEM/CM ONLY	562
LM3940ISX33NOPB	Texas Instruments	OEM/CM ONLY	278
LM3940ISX33	Texas Instruments	OEM/CM ONLY	724

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3/NOPB	Texas Instruments	In stock	11
LM3940IS-3.3	National Semiconductor Corporation	In stock	355
LM3940ISX-3.3/NOPB	National Semiconductor Corporation	In stock	562

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

National Semiconductor Corporation

in stock - can ship the same day

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

National Semiconductor Corporation

OEM/CM Immediate delivery

852

LM3940ISX-3.3

National Semiconductor Corporation

OEM/CM Immediate delivery

14585

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3/NOPB D# 926-LM3940IS-3.3NOPB	Texas Instruments	LDO Voltage Regulators 1A LDO REG RoHS: Compliant	603
LM3940ISX-3.3/NOPB D# 926-LM3940ISX3.3NOPB	Texas Instruments	LDO Voltage Regulators 1A LDO REG RoHS: Compliant	41
LM3940IS-3.3 D# 926-LM3940IS-33	Texas Instruments	LDO Voltage Regulators RoHS: Not Compliant	45

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

D# 29AH6337

Texas Instruments

LDO, FIXED, 3.3V, 1A, TO-263-3, Output Type:Fixed, Input Voltage Min:4.5V, Input Voltage Max:5.5V, Fixed Output Voltage Nom.:3.3V, Adjustable Output Voltage Min:-, Adjustable Output Voltage Max:-, Output Current:1A, Dropout Voltage RoHS Compliant: Yes

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

129

LM3940IS-3.3/NOPB

D# 41K5124

Texas Instruments

LDO VOLTAGE REGULATOR, 3.3V, 1A, TO-263, Output Type:Fixed, Input Voltage Min:0V, Input Voltage Max:7.5V, Fixed Output Voltage Nom.:3.3V, Adjustable Output Voltage Min:-, Adjustable Output Voltage Max:-, Output Current:1A RoHS Compliant: Yes

RoHS: Compliant

Min Qty: 1

Container: Bulk

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3/NOPB D# NS-LM3940ISX-3.3/NOPB	Texas Instruments	OEM/CM ONLY	6021
LM3940IS-3.3 D# NS-LM3940IS-3.3	Texas Instruments	OEM/CM ONLY	1614
LM3940ISX-3.3 D# NS-LM3940ISX-3.3	Texas Instruments	OEM/CM ONLY	3942
LM3940IS-3.3/NOPB D# NS-LM3940IS-3.3/NOPB	Texas Instruments	OEM/CM ONLY	2348

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3/NOPB	National Semiconductor Corporation	3.3 V FIXED POSITIVE LDO REGULATOR, 1 V DROPOUT, PSSO3	17
LM3940ISX-3.3/NOPB	National Semiconductor Corporation	3.3V FIXED POSITIVE LDO REGULATOR, 1V DROPOUT, PSSO3	443
LM3940IS-3.3	National Semiconductor Corporation	Voltage Regulator, +3.3V, Bi-Polar, 3 Pin, Plastic, SIP	219
LM3940ISX-3.3	National Semiconductor Corporation	Voltage Regulator, +3.3V, Bi-Polar, 3 Pin, Plastic, SIP	872

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

D# LM3940IS-3dot3

National Semiconductor Corporation

Semiconductor

210

LM3940ISX-3.3

D# LM3940ISX-3dot3

National Semiconductor Corporation

Semiconductor

3496

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3/NOPB

D# 1977283

Texas Instruments

Texas Instruments LM3940IS-3.3/NOPB, LDO Voltage Regulator, 1A Adjustable, 3.3 V, 2.5% 3-Pin, D2PAK, TU

Min Qty: 45

Container: Tube

145

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

National Semiconductor Corporation

LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion

RoHS: Compliant

18945

LM3940IS-3.3/NOPB

National Semiconductor Corporation

LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion

RoHS: Compliant

4034

Part Number	Manufacturer	Description	Stock
LM3940ISX3.3P+	National Semiconductor Corporation	OEM/CM ONLY	130
LM3940ISX3.3	National Semiconductor Corporation	OEM/CM ONLY	38905
LM3940ISX3.3/NOPB	National Semiconductor Corporation	OEM/CM ONLY	5155
LM3940ISX3.3ROHS	National Semiconductor Corporation	OEM/CM ONLY	209

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3

National Semiconductor Corporation

IN stock Immediate delivery

847

LM3940ISX-3.3

National Semiconductor Corporation

IN stock Immediate delivery

14600

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3

Texas Instruments

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3/NOPB

Texas Instruments

1-A, low-dropout voltage regulator for 5-V to 3.3-V conversion

LM3940ISX-3.3/NOPB

Texas Instruments

1-A, low-dropout voltage regulator for 5-V to 3.3-V conversion

Part Number	Manufacturer	Description	Stock
LM3940IS-3.3	National Semiconductor Corporation	shipping today	12496
LM3940ISX-3.3/NOPB	Texas Instruments	shipping today	6
LM3940ISX-3.3NOPB	N	shipping today	2032
LM3940ISX-3.3	National Semiconductor Corporation	shipping today	6367

Part Number

Manufacturer

Description

Stock

LM3940IS-3.3/NOPB

D# 53705262

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK Tube

LM3940ISX-3.3/NOPB

D# 52710759

Texas Instruments

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) DDPAK T/R

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3	mfr	RFQ	9915
LM3940ISX-3.3TR	National Semiconductor Corporation	RFQ	7247
LM3940IS-3.3/NOPB	Texas Instruments	RFQ	2151
LM3940ISX-3.3NOPB	N/A	RFQ	14249
LM3940IS-3.3	mfr	RFQ	10410

Part Number	Manufacturer	Description	Stock
LM3940ISX-3.3	Texas Instruments	LM3940 1A Low Dropout Regulator for 5V to 3.3V Conversion \| IC REG LIN 3.3V 1A DDPAK/TO263-3	6007
LM3940IS-3.3	Texas Instruments	IC REG LDO 3.3V 1A DDPAK	870
LM3940ISX-3.3/NOPB	Texas Instruments	IC REG LDO 3.3V 1A DDPAK	3358

Part Number

Manufacturer

Description

Stock

LM3940ISX-3.3/NOPB

D# 3007562

Texas Instruments

LDO, FIXED, 3.3V, 1A, TO-263-3

RoHS: Compliant

Min Qty: 1

Container: Cut Tape

129

LM3940IS-3.3/NOPB

D# 3122101

Texas Instruments

IC, V REG, LINEAR, 3.3V

RoHS: Compliant

Min Qty: 1

Container: Each

543

Quick Inquiry

LM3940ISX-3.3

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