LT1121CS8-5#PBFAlternatives & Equivalent Parts
About LT1121CS8-5#PBF
LT1121CS8-5#PBF is a Integrated Circuit component manufactured by Linear Technology. It comes in a Small Outline 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 | LT1121CS8-5#PBFSource | LM2576D2T-005G | OP491GSZ | TAJA105K025RNJ | MBR20100CT-G1 | TPS651851RSLR |
|---|---|---|---|---|---|---|
| Manufacturer | Linear Technology | ON Semiconductor | Analog Devices | AVX | Diodes Inc. | Texas Instruments |
| Package Type | Small Outline Packages | Other | Small Outline Packages | Capacitor Moulded Polarised | Transistor Outline, Vertical | Quad Flat No-Lead |
| Pin Count | 8 | 5 | 14 | 2 | 3 | 49 |
| Temperature Range | — | -40.0°C ~ 125.0°C | -40.0°C ~ 125.0°C | -55.0°C ~ 125.0°C | ~ 150.0°C | -40.0°C ~ 85.0°C |
| Price | $2.8200 | $1.0967 | $6.8200 | $0.0727 | $0.1928 | $1.9800 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||
| Pbfree Code | No | Yes | No | Yes | — | Yes |
| Manufacturer Package Code | 05-08-1610 (S8) | 936A-02 | R-14 | — | — | — |
| YTEOL | 9 | 7 | 10 | 10 | 6 | 15 |
| Adjustability | FIXED | — | — | — | — | — |
| Dropout Voltage1-Max | 0.7 V | — | — | — | — | — |
| Dropout Voltage1-Nom | 0.42 V | — | — | — | — | — |
| Input Voltage Absolute-Max | 30 V | — | — | — | — | — |
| Input Voltage-Max | 20 V | 40 V | — | — | — | 5.9 V |
| Input Voltage-Min | 6 V | 8 V | — | — | — | 3 V |
| JESD-30 Code | R-PDSO-G8 | R-PSSO-G5 | R-PDSO-G14 | — | R-PSFM-T3 | S-PQCC-N48 |
| JESD-609 Code | e3 | e3 | e3 | e3 | e3 | e4 |
| Line Regulation-Max | 0.01% | — | — | — | — | — |
| Load Regulation-Max | 0.04% | — | — | — | — | — |
| Number of Functions | 1 | 1 | 4 | — | — | 1 |
| Number of Outputs | 1 | — | — | — | — | 4 |
| Operating Temperature TJ-Max | 125 °C | — | — | — | — | — |
| Output Current1-Max | 0.15 A | — | — | — | — | — |
| Output Voltage1-Max | 5.15 V | — | — | — | — | — |
| Output Voltage1-Min | 4.85 V | — | — | — | — | — |
| Output Voltage1-Nom | 5 V | — | — | — | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 | SMSIP5H,.6,67TB | SOP14,.25 | — | — | LCC48,.24SQ,16 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR PACKAGE | RECTANGULAR | SQUARE |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMT | FLANGE MOUNT | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Packing Method | TUBE | — | — | TR, PLASTIC, 7 INCH | — | — |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 | — | 260 | 260 |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | — | — | — |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR | — | — | — | — | — |
| Surface Mount | YES | YES | YES | YES | NO | YES |
| Technology | BIPOLAR | BIPOLAR | BICMOS | — | SCHOTTKY | — |
| Terminal Finish | Matte Tin (Sn) - annealed | Matte Tin (Sn) - annealed | Matte Tin (Sn) | Matte Tin (Sn) - with Nickel (Ni) barrier | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING | GULL WING | GULL WING | — | THROUGH-HOLE | NO LEAD |
| Terminal Pitch | 1.27 mm | 1.702 mm | 1.27 mm | — | — | 0.4 mm |
| Terminal Position | DUAL | SINGLE | DUAL | — | SINGLE | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 | — | — | 30 |
| Voltage Tolerance-Max | 3% | — | — | — | — | — |
| Factory Lead Time | — | 14 Weeks | — | 13 Weeks | 28 Weeks | — |
| Analog IC - Other Type | — | SWITCHING REGULATOR | — | — | — | INTEGRATED POWER MANAGEMENT UNIT |
| Control Mode | — | VOLTAGE-MODE | — | — | — | — |
| Control Technique | — | PULSE WIDTH MODULATION | — | — | — | — |
| Input Voltage-Nom | — | 12 V | — | — | — | — |
| Output Current-Max | — | 7.5 A | — | — | 10 A | — |
| Output Voltage-Max | — | 5.1 V | — | — | — | — |
| Output Voltage-Min | — | 4.9 V | — | — | — | — |
| Output Voltage-Nom | — | 5 V | — | — | — | — |
| Switcher Configuration | — | BUCK | — | — | — | — |
| Switching Frequency-Max | — | 63 kHz | — | — | — | 1000 kHz |
| Temperature Grade | — | AUTOMOTIVE | AUTOMOTIVE | — | — | INDUSTRIAL |
| Amplifier Type | — | — | OPERATIONAL AMPLIFIER | — | — | — |
| Architecture | — | — | VOLTAGE-FEEDBACK | — | — | — |
| Average Bias Current-Max (IIB) | — | — | 0.095 µA | — | — | — |
| Bias Current-Max (IIB) @25C | — | — | 0.065 µA | — | — | — |
| Common-mode Reject Ratio-Min | — | — | 65 dB | — | — | — |
| Common-mode Reject Ratio-Nom | — | — | 97 dB | — | — | — |
| Frequency Compensation | — | — | YES | — | — | — |
| Input Offset Voltage-Max | — | — | 1250 µV | — | — | — |
| Low-Bias | — | — | NO | — | — | — |
| Low-Offset | — | — | NO | — | — | — |
| Micropower | — | — | YES | — | — | — |
| Neg Supply Voltage Limit-Max | — | — | -8 V | — | — | — |
| Neg Supply Voltage-Nom (Vsup) | — | — | -5 V | — | — | — |
| Power | — | — | NO | — | — | — |
| Programmable Power | — | — | NO | — | — | — |
| Slew Rate-Nom | — | — | 0.5 V/us | — | — | — |
| Supply Current-Max | — | — | 2.2 mA | — | — | — |
| Supply Voltage Limit-Max | — | — | 8 V | — | — | — |
| Supply Voltage-Nom (Vsup) | — | — | 5 V | — | — | 3.7 V |
| Unity Gain BW-Nom | — | — | 3000 | — | — | — |
| Voltage Gain-Min | — | — | 25000 | — | — | — |
| Wideband | — | — | NO | — | — | — |
| ## OP491GSZ Alternates Showing results | — | — | Image | — | — | — |
| Reach Compliance Code | — | — | — | Compliant | — | — |
| Additional Feature | — | — | — | ESR AND RIPPLE CURRENT IS MEASURED AT 100KHZ | LOW NOISE | — |
| Capacitance | — | — | — | 1 µF | — | — |
| Capacitor Type | — | — | — | TANTALUM CAPACITOR | — | — |
| Dielectric Material | — | — | — | TANTALUM (DRY/SOLID) | — | — |
| ESR | — | — | — | 8000 mΩ | — | — |
| Height | — | — | — | 1.6 mm | — | — |
| Leakage Current | — | — | — | 0.0005 mA | — | — |
| Mounting Feature | — | — | — | SURFACE MOUNT | — | — |
| Negative Tolerance | — | — | — | 10% | — | — |
| Polarity | — | — | — | POLARIZED | — | — |
| Positive Tolerance | — | — | — | 10% | — | — |
| Rated (DC) Voltage (URdc) | — | — | — | 25 V | — | — |
| Ripple Current | — | — | — | 39 mA | — | — |
| Size Code | — | — | — | 1206 | — | — |
| Tan Delta | — | — | — | 0.04 | — | — |
| Terminal Shape | — | — | — | J BEND | — | — |
| Application | — | — | — | — | HIGH VOLTAGE POWER | — |
| Case Connection | — | — | — | — | ISOLATED | — |
| Configuration | — | — | — | — | COMMON CATHODE, 2 ELEMENTS | — |
| Diode Element Material | — | — | — | — | SILICON | — |
| Diode Type | — | — | — | — | RECTIFIER DIODE | — |
| Forward Voltage-Max (VF) | — | — | — | — | 0.85 V | — |
| JEDEC-95 Code | — | — | — | — | TO-220AB | — |
| Non-rep Pk Forward Current-Max | — | — | — | — | 150 A | — |
| Number of Elements | — | — | — | — | 2 | — |
| Number of Phases | — | — | — | — | 1 | — |
| Rep Pk Reverse Voltage-Max | — | — | — | — | 100 V | — |
| Reverse Current-Max | — | — | — | — | 100 µA | — |
| Reverse Test Voltage | — | — | — | — | 100 V | — |
| Date Of Intro | — | — | — | — | — | 2016-12-18 |
| Adjustable Threshold | — | — | — | — | — | YES |
| Number of Channels | — | — | — | — | — | 4 |
| Supply Voltage-Max (Vsup) | — | — | — | — | — | 5.9 V |
| Supply Voltage-Min (Vsup) | — | — | — | — | — | 3 V |
| Threshold Voltage-Nom | — | — | — | — | — | +2.9V |
| ## TPS651851RSLR Alternates Showing results | — | — | — | — | — | Image |
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 5 alternatives for LT1121CS8-5#PBF — response within 24 hours.
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Why Look for Alternatives?
Finding alternatives for LT1121CS8-5#PBF 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 LT1121CS8-5#PBF 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 LT1121CS8-5#PBF?
Known equivalents for LT1121CS8-5#PBF include LM2576D2T-005G, OP491GSZ, TAJA105K025RNJ. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of LT1121CS8-5#PBF?
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 LT1121CS8-5#PBF 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.