L4974AAlternatives & Equivalent Parts
About L4974A
L4974A is a Integrated Circuit component manufactured by STMicroelectronics. It comes in a Dual-In-Line Packages 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 | L4974ASource | STPS1545CT | STPS640CB | STPS640CSFY | TNPW1206249RBEEA | EFM8SB10F8G-A-QSOP24 | L4978 | L4962/A | L4940V5 | L4986ATR |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | Vishay | Silicon Labs | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package Type | Dual-In-Line Packages | Transistor Outline, Vertical | Other | Other | Other | Small Outline Packages | Dual-In-Line Packages | Dual-In-Line Packages | Transistor Outline, Vertical | Small Outline Packages |
| Pin Count | 20 | 3 | 3 | 3 | 2 | 24 | 8 | 16 | 3 | 10 |
| Temperature Range | -40.0°C ~ 150.0°C | ~ 175.0°C | — | -40.0°C ~ 150.0°C | -55.0°C ~ 125.0°C | — | -40.0°C ~ 150.0°C | -40.0°C ~ 150.0°C | — | -25.0°C ~ 125.0°C |
| Price | $5.2400 | $0.2400 | $0.5074 | $0.2238 | $0.1250 | $0.9900 | $1.8082 | $3.0200 | $0.5720 | $1.5500 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | OBSOLETE | ACTIVE | OBSOLETE | ACTIVE | ACTIVE | — | ACTIVE | OBSOLETE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||||||
| YTEOL | 0 | 5.22 | 0 | 6.12 | 14 | — | 6 | 0 | 5.9 | 7 |
| Analog IC - Other Type | SWITCHING REGULATOR | — | — | — | — | — | SWITCHING REGULATOR | SWITCHING REGULATOR | — | POWER FACTOR CONTROLLER |
| Control Mode | VOLTAGE-MODE | — | — | — | — | — | VOLTAGE-MODE | VOLTAGE-MODE | — | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION | — | — | — | — | — | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | — | PULSE WIDTH MODULATION |
| Input Voltage-Max | 50 V | — | — | — | — | — | 55 V | 46 V | 17 V | 24.5 V |
| Input Voltage-Min | 15 V | — | — | — | — | — | 8 V | 9 V | 6 V | 10 V |
| Input Voltage-Nom | 35 V | — | — | — | — | — | 24 V | 35 V | — | 15 V |
| JESD-30 Code | R-PDIP-T20 | R-PSFM-T3 | R-PSSO-G2 | R-PDSO-F3 | — | — | R-PDIP-T8 | R-PDIP-T16 | R-PSFM-T3 | R-PDSO-G10 |
| JESD-609 Code | e3 | e3 | e3 | — | e3 | — | e3 | e3 | e3 | — |
| Number of Functions | 1 | — | — | — | — | — | 1 | 1 | 1 | 1 |
| Output Current-Max | 5.5 A | 7.5 A | 3 A | 3 A | — | — | 3.5 A | 3.3 A | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | — | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 | — | — | — | — | — | DIP8,.3 | DIP16,.3 | SIP3,.1TB | SOP10,.25,40 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR PACKAGE | — | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | FLANGE MOUNT | SMALL OUTLINE | SMALL OUTLINE | SMT | — | IN-LINE | IN-LINE | FLANGE MOUNT | SMALL OUTLINE |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | — | — | — | Not Qualified | Not Qualified | Not Qualified | — |
| Surface Mount | NO | NO | YES | YES | YES | — | NO | NO | NO | YES |
| Switcher Configuration | BUCK | — | — | — | — | — | BUCK | BUCK | — | BOOST |
| Switching Frequency-Max | 200 kHz | — | — | — | — | — | 300 kHz | 150 kHz | — | 71 kHz |
| Technology | BCDMOS | SCHOTTKY | SCHOTTKY | SCHOTTKY | THIN FILM | — | BCDMOS | BIPOLAR | BIPOLAR | — |
| Terminal Finish | TIN | Matte Tin (Sn) | MATTE TIN | — | MATTE TIN OVER NICKEL | — | Matte Tin (Sn) - annealed | MATTE TIN | Matte Tin (Sn) - annealed | — |
| Terminal Form | THROUGH-HOLE | THROUGH-HOLE | GULL WING | FLAT | — | — | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE | GULL WING |
| Terminal Pitch | 2.54 mm | — | — | — | — | — | 2.54 mm | 2.54 mm | 2.54 mm | 1 mm |
| Terminal Position | DUAL | SINGLE | SINGLE | DUAL | — | — | DUAL | DUAL | SINGLE | DUAL |
| Factory Lead Time | — | 15 Weeks | — | 15 Weeks | 8 Weeks | — | 16 Weeks | — | 8 Weeks | 25 Weeks |
| Additional Feature | — | FREE WHEELING DIODE | FREEWHEELING DIODE | FREE WHEELING DIODE | ANTI-SULFUR, RATED AC VOLTAGE (V): 200 | — | — | — | — | — |
| Application | — | FAST RECOVERY POWER | POWER | GENERAL PURPOSE | — | — | — | — | — | — |
| Configuration | — | COMMON CATHODE, 2 ELEMENTS | COMMON CATHODE, 2 ELEMENTS | COMMON CATHODE, 2 ELEMENTS | — | — | — | — | — | — |
| Diode Element Material | — | SILICON | SILICON | SILICON | — | — | — | — | — | — |
| Diode Type | — | RECTIFIER DIODE | RECTIFIER DIODE | RECTIFIER DIODE | — | — | — | — | — | — |
| Forward Voltage-Max (VF) | — | 0.84 V | 0.57 V | 0.58 V | — | — | — | — | — | — |
| JEDEC-95 Code | — | TO-220AB | TO-252AA | TO-277A | — | — | — | — | — | — |
| Non-rep Pk Forward Current-Max | — | 150 A | 75 A | 120 A | — | — | — | — | — | — |
| Number of Elements | — | 2 | 2 | 2 | — | — | — | — | — | — |
| Number of Phases | — | 1 | 1 | 1 | — | — | — | — | — | — |
| Peak Reflow Temperature (Cel) | — | NOT SPECIFIED | 260 | NOT SPECIFIED | — | — | — | — | NOT SPECIFIED | — |
| Rep Pk Reverse Voltage-Max | — | 45 V | 40 V | 40 V | — | — | — | — | — | — |
| Reverse Current-Max | — | 100 µA | 10000 µA | 75 µA | — | — | — | — | — | — |
| Reverse Test Voltage | — | 45 V | — | 40 V | — | — | — | — | — | — |
| Time@Peak Reflow Temperature-Max (s) | — | NOT SPECIFIED | 30 | NOT SPECIFIED | — | — | — | — | NOT SPECIFIED | — |
| ## STPS1545CT Alternates Showing results | — | Image | — | — | — | — | — | — | — | — |
| Case Connection | — | — | CATHODE | CATHODE | — | — | — | — | — | — |
| ## STPS640CB Alternates Showing results | — | — | Image | — | — | — | — | — | — | — |
| Date Of Intro | — | — | — | 2020-10-29 | — | — | — | — | — | — |
| Reference Standard | — | — | — | AEC-Q101 | AEC-Q200 | — | — | — | — | — |
| Pbfree Code | — | — | — | — | Yes | — | — | — | — | — |
| Reach Compliance Code | — | — | — | — | Compliant | — | — | — | — | — |
| Construction | — | — | — | — | Rectangular | — | — | — | — | — |
| Mounting Feature | — | — | — | — | SURFACE MOUNT | — | — | — | — | — |
| Package Height | — | — | — | — | 0.55 mm | — | — | — | — | — |
| Package Length | — | — | — | — | 3.2 mm | — | — | — | — | — |
| Package Width | — | — | — | — | 1.6 mm | — | — | — | — | — |
| Packing Method | — | — | — | — | TR, Paper, 7 Inch | — | — | — | TUBE | — |
| Rated Power Dissipation (P) | — | — | — | — | 0.27 W | — | — | — | — | — |
| Rated Temperature | — | — | — | — | 70 °C | — | — | — | — | — |
| Resistance | — | — | — | — | 249 Ω | — | — | — | — | — |
| Resistor Type | — | — | — | — | FIXED RESISTOR | — | — | — | — | — |
| Size Code | — | — | — | — | 1206 | — | — | — | — | — |
| Temperature Coefficient | — | — | — | — | 25 ppm/°C | — | — | — | — | — |
| Terminal Shape | — | — | — | — | WRAPAROUND | — | — | — | — | — |
| Tolerance | — | — | — | — | 0.1% | — | — | — | — | — |
| Working Voltage | — | — | — | — | 200 V | — | — | — | — | — |
| Output Voltage-Max | — | — | — | — | — | — | 50 V | 40 V | — | — |
| Output Voltage-Min | — | — | — | — | — | — | 3.3 V | 5.1 V | — | — |
| Output Voltage-Nom | — | — | — | — | — | — | 3.36 V | 5.1 V | — | — |
| Supply Current-Max (Isup) | — | — | — | — | — | — | 6 mA | 40 mA | — | 4.7 mA |
| Temperature Grade | — | — | — | — | — | — | — | AUTOMOTIVE | — | — |
| Adjustability | — | — | — | — | — | — | — | — | FIXED | — |
| Dropout Voltage1-Max | — | — | — | — | — | — | — | — | 0.9 V | — |
| Dropout Voltage1-Nom | — | — | — | — | — | — | — | — | 0.5 V | — |
| Input Voltage Absolute-Max | — | — | — | — | — | — | — | — | 30 V | — |
| Line Regulation-Max | — | — | — | — | — | — | — | — | 0.01% | — |
| Load Regulation-Max | — | — | — | — | — | — | — | — | 0.025% | — |
| Number of Outputs | — | — | — | — | — | — | — | — | 1 | — |
| Operating Temperature TJ-Max | — | — | — | — | — | — | — | — | 150 °C | — |
| Operating Temperature TJ-Min | — | — | — | — | — | — | — | — | -40 °C | — |
| Output Current1-Max | — | — | — | — | — | — | — | — | 1.5 A | — |
| Output Voltage1-Max | — | — | — | — | — | — | — | — | 5.2 V | — |
| Output Voltage1-Min | — | — | — | — | — | — | — | — | 4.8 V | — |
| Output Voltage1-Nom | — | — | — | — | — | — | — | — | 5 V | — |
| Regulator Type | — | — | — | — | — | — | — | — | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | — |
| Voltage Tolerance-Max | — | — | — | — | — | — | — | — | 4% | — |
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 9 alternatives for L4974A — response within 24 hours.
Quick Links
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Switching Regulator, Voltage-mode, 3.5A, 300kHz Switching Freq-Max, BCDMOS, PDIP8
Switching Regulator, Voltage-mode, 3.3A, 150kHz Switching Freq-Max, BIPolar, PDIP16
Why Look for Alternatives?
Finding alternatives for L4974A 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 L4974A 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 L4974A?
Known equivalents for L4974A include STPS1545CT, STPS640CB, STPS640CSFY. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of L4974A?
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 L4974A 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.