ZD Integrated Circuits
Fairchild

78S40

Switching Regulator · DIP-16 · Analog
Obsolete

78S40 is a switching regulator component manufactured by Fairchild, supplied in DIP-16 package, of type Analog. 78S40 is marked Obsolete — exactly the hard-to-find, end-of-life inventory ZD Integrated Circuits specializes in sourcing globally. ZDI sources this part through its global broker network — request a quote for current availability and pricing.

Part Number78S40
ManufacturerFairchild
CategorySwitching Regulator
TypeAnalog
PackageDIP-16
LifecycleObsolete
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Specifications

Part Number78S40
ManufacturerFairchild
CategorySwitching Regulator
TypeAnalog
PackageDIP-16
LifecycleObsolete
Last UpdatedJune 8, 2026

Universal switching regulator subsystem, 2.5-40 V in, adjustable out

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78S40 is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — ZDI sources these through vetted channels with inspection and traceability.

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