L4971Alternatives & Equivalent Parts
About L4971
L4971 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 | L4971Source | L4971D | STPS3L40S | 0603ZC332KAT2A | L4971D013TR |
|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | AVX | STMicroelectronics |
| Package Type | Dual-In-Line Packages | Small Outline Packages | Diodes Moulded | Capacitor Chip Non-polarised | Small Outline Packages |
| Pin Count | 8 | 16 | 2 | 2 | 16 |
| Temperature Range | -40.0°C ~ 150.0°C | -40.0°C ~ 150.0°C | ~ 150.0°C | -55.0°C ~ 125.0°C | -40.0°C ~ 150.0°C |
| Price | $1.0405 | $2.3291 | $0.0846 | $0.0400 | $1.6496 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | |||||
| Factory Lead Time | 16 Weeks | — | 15 Weeks | 12 Weeks | 10 Weeks |
| YTEOL | 6 | 7.1 | 4 | 6 | 7.1 |
| Analog IC - Other Type | SWITCHING REGULATOR | SWITCHING REGULATOR | — | — | SWITCHING REGULATOR |
| Control Mode | VOLTAGE-MODE | VOLTAGE-MODE | — | — | VOLTAGE-MODE |
| Control Technique | PULSE WIDTH MODULATION | PULSE WIDTH MODULATION | — | — | PULSE WIDTH MODULATION |
| Input Voltage-Max | 55 V | 55 V | — | — | 55 V |
| Input Voltage-Min | 8 V | 8 V | — | — | 8 V |
| Input Voltage-Nom | 24 V | 24 V | — | — | 24 V |
| JESD-30 Code | R-PDIP-T8 | R-PDSO-G16 | R-PDSO-C2 | — | R-PDSO-G16 |
| JESD-609 Code | e3 | e4 | e3 | e3 | e4 |
| Number of Functions | 1 | 1 | — | — | 1 |
| Output Current-Max | 3 A | 3 A | 3 A | — | 3 A |
| Output Voltage-Max | 50 V | 50 V | — | — | 50 V |
| Output Voltage-Min | 3.3 V | 3.3 V | — | — | 3.3 V |
| Output Voltage-Nom | 3.3 V | 3.3 V | — | — | 3.3 V |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 | SOP16,.4 | — | — | SOP16,.4 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR PACKAGE | RECTANGULAR |
| Package Style | IN-LINE | SMALL OUTLINE | SMALL OUTLINE | SMT | SMALL OUTLINE |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | — | Not Qualified |
| Supply Current-Max (Isup) | 6 mA | 6 mA | — | — | 6 mA |
| Surface Mount | NO | YES | YES | YES | YES |
| Switcher Configuration | BUCK | BUCK | — | — | BUCK |
| Switching Frequency-Max | 300 kHz | 300 kHz | — | — | 300 kHz |
| Technology | BCDMOS | BCDMOS | SCHOTTKY | — | BCDMOS |
| Terminal Finish | Matte Tin (Sn) - annealed | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) | MATTE TIN OVER NICKEL | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE | GULL WING | C BEND | — | GULL WING |
| Terminal Pitch | 2.54 mm | 1.27 mm | — | — | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL | — | DUAL |
| Peak Reflow Temperature (Cel) | — | 250 | 260 | — | 250 |
| Time@Peak Reflow Temperature-Max (s) | — | NOT SPECIFIED | 10 | — | NOT SPECIFIED |
| ## L4971D Alternates Showing results | — | Image | — | — | — |
| Additional Feature | — | — | LOW FORWARD VOLTAGE | — | — |
| Application | — | — | POWER | — | — |
| Configuration | — | — | SINGLE | — | — |
| Diode Element Material | — | — | SILICON | — | — |
| Diode Type | — | — | RECTIFIER DIODE | — | — |
| Forward Voltage-Max (VF) | — | — | 0.62 V | — | — |
| JEDEC-95 Code | — | — | DO-214AB | — | — |
| Non-rep Pk Forward Current-Max | — | — | 75 A | — | — |
| Number of Elements | — | — | 1 | — | — |
| Number of Phases | — | — | 1 | — | — |
| Rep Pk Reverse Voltage-Max | — | — | 40 V | — | — |
| Reverse Current-Max | — | — | 100 µA | — | — |
| Reverse Test Voltage | — | — | 40 V | — | — |
| Pbfree Code | — | — | — | Yes | — |
| Reach Compliance Code | — | — | — | Compliant | — |
| Capacitance | — | — | — | 0.0033 µF | — |
| Capacitor Type | — | — | — | CERAMIC CAPACITOR | — |
| Dielectric Material | — | — | — | CERAMIC | — |
| Height | — | — | — | 0.9 mm | — |
| Mounting Feature | — | — | — | SURFACE MOUNT | — |
| Multilayer | — | — | — | Yes | — |
| Negative Tolerance | — | — | — | 10% | — |
| Packing Method | — | — | — | TR, PAPER, 7 INCH | — |
| Positive Tolerance | — | — | — | 10% | — |
| Rated (DC) Voltage (URdc) | — | — | — | 10 V | — |
| Size Code | — | — | — | 0603 | — |
| Temperature Characteristics Code | — | — | — | X7R | — |
| Temperature Coefficient | — | — | — | 15% ppm/°C | — |
| Terminal Shape | — | — | — | WRAPAROUND | — |
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 4 alternatives for L4971 — response within 24 hours.
Quick Links
suggested
Switching Regulator, Voltage-mode, 3A, 300kHz Switching Freq-Max, BCDMOS, PDSO16
Why Look for Alternatives?
Finding alternatives for L4971 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 L4971 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 L4971?
Known equivalents for L4971 include L4971D, STPS3L40S, 0603ZC332KAT2A. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of L4971?
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 L4971 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.