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Alternatives to Analog Devices LT1129CS8-5

Analog Devices LT1129CS8-5 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

LT1129CS8-5 compared against its qualified second sources
LT1129CS8-5Analog DevicesLT1129CS8-5#PBFAnalog Devices Inc.LT1129IS8-5#PBFAnalog Devices Inc.+3more
FFF CompatibilityThe package and pinout assignments are 100% identical.Housed in the identical 8-SOIC (0.154" width) package.Meets all electrical ratings including 700mA output current, 5V regulated output, and 30V max input voltage.The package and pinout assignments are 100% identical.Housed in the identical 8-SOIC (0.154" width) package.Meets or exceeds all electrical ratings, offering identical power specs with a wider operating temperature range.
AI Summary

LT1129CS8-5 by Analog Devices: Linear Voltage Regulator IC 1 Output 700mA 8-SO.

This is the direct lead-free (RoHS compliant) equivalent of the obsolete LT1129CS8-5, offering an identical electrical, physical, and pin-compatible drop-in replacement.

  • Direct replacement from the same manufacturer
  • Identical electrical specifications (700mA output, 30V max input)
  • Fully pin-compatible drop-in replacement with no PCB layout changes required

This is the industrial-grade version of the same regulator, offering identical electrical performance and pin compatibility with a wider temperature operating range.

  • Extended industrial temperature range (-40°C to 125°C vs 0°C to 125°C)
  • Identical electrical specifications (700mA output, 30V max input)
  • Fully pin-compatible drop-in replacement
  • Slightly higher unit cost compared to the commercial grade version
Lifecycle StatusObsoleteActiveActive
Market AvailabilityNon-stockIn stockIn stock
REACHREACHREACHREACH
RoHSRoHSRoHSRoHS
DescriptionLinear Voltage Regulator IC 1 Output 700mA 8-SOLinear Voltage Regulator IC Positive Fixed 1 Output 700mA 8-SOLinear Voltage Regulator IC Positive Fixed 1 Output 700mA 8-SO
ManufacturerAnalog DevicesAnalog Devices Inc.Analog Devices Inc.
TypePower Management (PMIC)Power Management (PMIC)Power Management (PMIC)
DatasheetOpenOpenOpen
Lead Time16 weeks23 weeks15 weeks
Country of Origin---
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8542.39.0090--
Moisture Sensitivity Level1 (Unlimited)--
Mounting TypeSurface Mount--
Package / Case8-SOIC (0.154", 3.90mm Width)--
Current - Output700mA--
Number of Regulators1--
Operating Temperature0°C ~ 125°C--
Supplier Device Package8-SO--

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Frequently asked questions

Yes. The Analog Devices LT1129CS8-5 is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.

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