LM3940IS-3.3Alternatives & Equivalent Parts
About LM3940IS-3.3
LM3940IS-3.3 is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Other package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | LM3940IS-3.3Source | LM3940IS-3.3/NOPB | LM3940ISX-3.3/NOPB | LM7805SX/NOPB | LM3940ISX-3.3 |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Other | TO-XXX (Inc. DPAK) | Other | Other | Other |
| Pin Count | 4 | 4 | 4 | 4 | 4 |
| 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 |
| Price | $1.4225 | $1.4225 | $0.9750 | — | $0.9750 |
| Electrical Parameters | |||||
| Pbfree Code | Yes | Yes | Yes | Yes | Yes |
| Date Of Intro | 1995-01-01 | — | — | 2016-07-23 | 1995-01-01 |
| YTEOL | 0 | 15 | 15 | 15 | 0 |
| Adjustability | FIXED | 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 | 2 V | 0.31 V |
| Input Voltage Absolute-Max | 7.5 V | 7.5 V | 7.5 V | 35 V | 7.5 V |
| Input Voltage-Max | 5.5 V | 5.5 V | 5.5 V | 30 V | 5.5 V |
| Input Voltage-Min | 4.5 V | 4.5 V | 4.5 V | 7.5 V | 4.5 V |
| JESD-30 Code | R-PSSO-G3 | R-PSSO-G3 | R-PSSO-G3 | R-PSSO-G3 | R-PSSO-G3 |
| JESD-609 Code | e0 | e3 | e3 | e3 | e0 |
| Line Regulation-Max | 0.04% | 0.04% | 0.04% | 0.05% | 0.04% |
| Load Regulation-Max | 0.08% | 0.08% | 0.08% | 0.05% | 0.08% |
| Number of Functions | 1 | 1 | 1 | 1 | 1 |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 |
| Operating Temperature TJ-Max | 125 °C | 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 | 1.5 A | 1 A |
| Output Voltage1-Max | 3.47 V | 3.47 V | 3.47 V | 5.25 V | 3.47 V |
| Output Voltage1-Min | 3.13 V | 3.13 V | 3.13 V | 4.75 V | 3.13 V |
| Output Voltage1-Nom | 3.3 V | 3.3 V | 3.3 V | 5 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 | SMSIP3H,.55TB |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE |
| Packing Method | TUBE | TUBE | TR | TR | TR |
| Peak Reflow Temperature (Cel) | 235 | 245 | 245 | 245 | 235 |
| 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 STANDARD REGULATOR | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES | YES | YES | YES | YES |
| Technology | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR | BIPOLAR |
| Terminal Finish | Tin/Lead (Sn/Pb) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Tin/Lead (Sn/Pb) |
| 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 | 2.54 mm |
| Terminal Position | SINGLE | SINGLE | SINGLE | SINGLE | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | 30 | 30 | 30 | NOT SPECIFIED |
| Voltage Tolerance-Max | 5.2% | 5.2% | 5.2% | 3% | 5.2% |
| ## LM3940IS-3.3 Alternates Showing results | Image | — | — | — | — |
| Reach Compliance Code | — | Not Compliant | — | — | — |
| ## LM3940IS-3.3/NOPB Alternates Showing results | — | Image | — | — | — |
| ## LM3940ISX-3.3/NOPB Alternates Showing results | — | — | Image | — | — |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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 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 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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Request Alternatives for LM3940IS-3.3FAQ
What is equivalent to LM3940IS-3.3?
Known equivalents for LM3940IS-3.3 include LM3940IS-3.3/NOPB, LM3940ISX-3.3/NOPB, LM7805SX/NOPB. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LM3940IS-3.3?
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 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.