LM3940IS-3.3/NOPBAlternatives & Equivalent Parts
About LM3940IS-3.3/NOPB
LM3940IS-3.3/NOPB is a Integrated Circuit component manufactured by Texas Instruments. It comes in a TO-XXX (Inc. DPAK) package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | LM3940IS-3.3/NOPBSource | LM3940IS-3.3 | LM3940ISX-3.3/NOPB | LM3940ISX-3.3 | TPS2044BD | TUSB2046IBVF | MUSB-K152-30 |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Amphenol |
| Package Type | TO-XXX (Inc. DPAK) | Other | Other | Other | — | Quad Flat Packages | Other |
| Pin Count | 4 | 4 | 4 | 4 | — | 32 | 7 |
| Temperature Range | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | — | -40.0°C ~ 85.0°C | -40.0°C ~ 105.0°C |
| Price | $1.4225 | $1.4225 | $0.9750 | $0.9750 | $1.9583 | $1.3726 | $7.9219 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | OBSOLETE | ACTIVE | OBSOLETE | — | ACTIVE | ACTIVE |
| Electrical Parameters | |||||||
| Pbfree Code | Yes | Yes | Yes | Yes | — | Yes | — |
| Reach Compliance Code | Not Compliant | — | — | — | — | — | Unknown |
| YTEOL | 15 | 0 | 15 | 0 | — | 15 | — |
| Adjustability | FIXED | FIXED | FIXED | FIXED | — | — | — |
| Dropout Voltage1-Max | 1 V | 1 V | 1 V | 1 V | — | — | — |
| Dropout Voltage1-Nom | 0.31 V | 0.31 V | 0.31 V | 0.31 V | — | — | — |
| Input Voltage Absolute-Max | 7.5 V | 7.5 V | 7.5 V | 7.5 V | — | — | — |
| Input Voltage-Max | 5.5 V | 5.5 V | 5.5 V | 5.5 V | — | — | — |
| Input Voltage-Min | 4.5 V | 4.5 V | 4.5 V | 4.5 V | — | — | — |
| JESD-30 Code | R-PSSO-G3 | R-PSSO-G3 | R-PSSO-G3 | R-PSSO-G3 | — | S-PQFP-G32 | — |
| JESD-609 Code | e3 | e0 | e3 | e0 | — | e4 | — |
| Line Regulation-Max | 0.04% | 0.04% | 0.04% | 0.04% | — | — | — |
| Load Regulation-Max | 0.08% | 0.08% | 0.08% | 0.08% | — | — | — |
| Number of Functions | 1 | 1 | 1 | 1 | — | — | — |
| Number of Outputs | 1 | 1 | 1 | 1 | — | — | — |
| Operating Temperature TJ-Max | 125 °C | 125 °C | 125 °C | 125 °C | — | — | — |
| Operating Temperature TJ-Min | -40 °C | -40 °C | -40 °C | -40 °C | — | — | — |
| Output Current1-Max | 1 A | 1 A | 1 A | 1 A | — | — | — |
| Output Voltage1-Max | 3.47 V | 3.47 V | 3.47 V | 3.47 V | — | — | — |
| Output Voltage1-Min | 3.13 V | 3.13 V | 3.13 V | 3.13 V | — | — | — |
| Output Voltage1-Nom | 3.3 V | 3.3 V | 3.3 V | 3.3 V | — | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY | — |
| Package Equivalence Code | SMSIP3H,.55TB | SMSIP3H,.55TB | SMSIP3H,.55TB | SMSIP3H,.55TB | — | — | — |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | — | SQUARE | — |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | — | FLATPACK, LOW PROFILE | — |
| Packing Method | TUBE | TUBE | TR | TR | — | — | — |
| Peak Reflow Temperature (Cel) | 245 | 235 | 245 | 235 | — | 260 | — |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | — | — | — |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | — | — | — |
| Surface Mount | YES | YES | YES | YES | — | YES | — |
| Technology | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR | — | CMOS | — |
| Terminal Finish | Matte Tin (Sn) | Tin/Lead (Sn/Pb) | Matte Tin (Sn) | Tin/Lead (Sn/Pb) | — | Nickel/Palladium/Gold (Ni/Pd/Au) | — |
| Terminal Form | GULL WING | GULL WING | GULL WING | GULL WING | — | GULL WING | — |
| Terminal Pitch | 2.54 mm | 2.54 mm | 2.54 mm | 2.54 mm | — | 0.8 mm | 1.3 mm |
| Terminal Position | SINGLE | SINGLE | SINGLE | SINGLE | — | QUAD | — |
| Time@Peak Reflow Temperature-Max (s) | 30 | NOT SPECIFIED | 30 | NOT SPECIFIED | — | 30 | — |
| Voltage Tolerance-Max | 5.2% | 5.2% | 5.2% | 5.2% | — | — | — |
| ## LM3940IS-3.3/NOPB Alternates Showing results | Image | — | — | — | — | — | — |
| Date Of Intro | — | 1995-01-01 | — | 1995-01-01 | — | 2017-07-06 | — |
| ## LM3940IS-3.3 Alternates Showing results | — | Image | — | — | — | — | — |
| ## LM3940ISX-3.3/NOPB Alternates Showing results | — | — | Image | — | — | — | — |
| Additional Feature | — | — | — | — | — | SUPPORTS 6-MHZ OPERATION THROUGH A CRYSTAL INPUT OR A 48-MHZ INPUT CLOCK | — |
| Bus Compatibility | — | — | — | — | — | VBUS | — |
| Clock Frequency-Max | — | — | — | — | — | 6 MHz | — |
| Data Transfer Rate-Max | — | — | — | — | — | 1.5 MBps | — |
| Supply Current-Max | — | — | — | — | — | 40 mA | — |
| Supply Voltage-Max | — | — | — | — | — | 3.6 V | — |
| Supply Voltage-Min | — | — | — | — | — | 3.3 V | — |
| Supply Voltage-Nom | — | — | — | — | — | 3.3 V | — |
| Temperature Grade | — | — | — | — | — | INDUSTRIAL | — |
| uPs/uCs/Peripheral ICs Type | — | — | — | — | — | BUS CONTROLLER, UNIVERSAL SERIAL BUS | — |
| Board Mounting Option | — | — | — | — | — | — | SOLDER HOLDING POSTS |
| Body Breadth | — | — | — | — | — | — | 0.394 inch |
| Body Depth | — | — | — | — | — | — | 0.42 inch |
| Body Length | — | — | — | — | — | — | 0.787 inch |
| Body/Shell Style | — | — | — | — | — | — | RECEPTACLE |
| Connector Type | — | — | — | — | — | — | USB CONNECTOR |
| Contact Finish Mating | — | — | — | — | — | — | NOT SPECIFIED |
| Contact Gender | — | — | — | — | — | — | FEMALE |
| Contact Material | — | — | — | — | — | — | NOT SPECIFIED |
| Contact Pattern | — | — | — | — | — | — | RECTANGULAR |
| Contact Resistance | — | — | — | — | — | — | 30 mΩ |
| Contact Style | — | — | — | — | — | — | MICRO-USB2.0 AB |
| DIN Conformance | — | — | — | — | — | — | NO |
| Dielectric Withstanding Voltage | — | — | — | — | — | — | 100VAC V |
| Empty Shell | — | — | — | — | — | — | NO |
| Filter Feature | — | — | — | — | — | — | NO |
| IEC Conformance | — | — | — | — | — | — | NO |
| Insulation Resistance | — | — | — | — | — | — | 100000000 Ω |
| Insulator Color | — | — | — | — | — | — | GRAY |
| Insulator Material | — | — | — | — | — | — | POLYETHYLENE |
| MIL Conformance | — | — | — | — | — | — | NO |
| Mixed Contacts | — | — | — | — | — | — | YES |
| Mounting Option 1 | — | — | — | — | — | — | #2-56 UNC |
| Mounting Style | — | — | — | — | — | — | RIGHT ANGLE |
| Mounting Type | — | — | — | — | — | — | BOARD AND PANEL |
| Number Of PCB Rows | — | — | — | — | — | — | 2 |
| Number of Ports | — | — | — | — | — | — | 1 |
| Number of Rows Loaded | — | — | — | — | — | — | 1 |
| Option | — | — | — | — | — | — | GENERAL PURPOSE |
| PCB Contact Pattern | — | — | — | — | — | — | STAGGERED |
| PCB Contact Row Spacing | — | — | — | — | — | — | 1.6 mm |
| Plating Thickness | — | — | — | — | — | — | 30u inch |
| Polarization Key | — | — | — | — | — | — | POLARIZED HOUSING |
| Rated Current (Signal) | — | — | — | — | — | — | 1.8 A |
| Reference Standard | — | — | — | — | — | — | UL |
| Shell Finish | — | — | — | — | — | — | NICKEL |
| Shell Material | — | — | — | — | — | — | ZINC ALLOY |
| Terminal Length | — | — | — | — | — | — | 0.108 inch |
| Termination Type | — | — | — | — | — | — | SOLDER |
| Total Number of Contacts | — | — | — | — | — | — | 5 |
| UL Flammability Code | — | — | — | — | — | — | 94V-0 |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 6 alternatives for LM3940IS-3.3/NOPB — response within 24 hours.
Quick Links
Regulator, 3.3V, 1V Dropout, BIPolar, PSSO3
Regulator, 3.3V, 1V Dropout, BIPolar, PSSO3
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Why Look for Alternatives?
Finding alternatives for LM3940IS-3.3/NOPB is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating LM3940IS-3.3/NOPB replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to LM3940IS-3.3/NOPB?
Known equivalents for LM3940IS-3.3/NOPB include LM3940IS-3.3, LM3940ISX-3.3/NOPB, LM3940ISX-3.3. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LM3940IS-3.3/NOPB?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify LM3940IS-3.3/NOPB alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.