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Telephone tone ringer IC with integrated oscillator and output stage
| Source | Mfr | Qty | Date Code | Condition | Status | |
|---|---|---|---|---|---|---|
| Live | — | 3279 | — | — | Live | RFQ |
| Live | SGS | 450 | 95 | — | Live | RFQ |
| Live | UTC | 300 | — | — | Live | RFQ |
| Live | SGS86 | 44 | — | — | Live | RFQ |
| Live | SGS93 | 30 | — | — | Live | RFQ |
| Live | SGS | 19 | — | — | Live | RFQ |
| Live | Wingshing | 10 | — | — | Live | RFQ |
| Live | SGS | 9 | 89+' | — | Live | RFQ |
| Live | STM Microelectronics | 6 | — | — | Live | RFQ |
| Live | UTC | 65500 | 21+ | — | Live | RFQ |
| Live | STMicroelectronics | 10606 | — | — | Live | RFQ |
| Live | — | 10000 | 07+ | — | Live | RFQ |
| Live | — | 6000 | — | — | Live | RFQ |
| Live | ST | 3829 | — | — | Live | RFQ |
ZDI Stock — in our warehouse · Market — offers available through our sourcing network · Live — recent offers from our sourcing network.
Recent search and sourcing activity for LS1240-A.
ZD Integrated Circuits operates an ISO 9001-certified quality system incorporating JEDEC-standard process-control elements. In an era of global sourcing and internet procurement, standards compliance alone no longer assures component authenticity — so ZDI pioneered a multi-layered counterfeit-avoidance program: supplier analysis at the source-country level, detailed component analysis, defined inspection standards for all incoming devices, and stringent supplier rating and review. These programs let ZDI guarantee the integrity and the source of every component it ships.
Every lot moves through ZDI's EQuality Process™ — validation, QI-1 and QI-2/camera inspection, RoHS verification, bake and bag-and-tag, and QI-3 final inspection — with Quality-Manager disposition before release. Nonconforming material is quarantined; conforming material is warehoused or shipped.
LS1240-A is marked Obsolete. Obsolete and end-of-life parts carry elevated counterfeit risk — exactly why ZDI routes them through the full EQuality Process™ with source-country supplier vetting, inspection, and traceability.
ZD Integrated Circuits sources hard-to-find, obsolete, and excess components worldwide — pricing and availability, fast.
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