Alternatives to onsemi LF347MX
onsemi LF347MX and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 LF347MXonsemi | LF347MX/NOPBTexas Instruments |  LF347DTSTMicroelectronics | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Exact 14-SOIC package pinout match with identical pin assignments.Identical physical package footprint, outline, and surface-mount style.Identical electrical parameters, absolute maximum ratings, and temperature range. | Exact pinout match for all 14 pins verified via datasheet extraction.Matches the standard 14-SOIC package outline and surface-mount style.Meets or exceeds all primary electrical characteristics and operates across the same 0°C to 70°C temperature range. | ||
 AI Summary | LF347MX by onsemi: J-FET Amplifier 4 Circuit 14-SOIC. | This is the active, lead-free (RoHS compliant) direct replacement of the obsolete LF347MX from Texas Instruments. It maintains identical specifications, electrical performance, and physical dimensions, ensuring a seamless drop-in transition.
| An active second-source alternative from STMicroelectronics that serves as a direct functional replacement in the same 14-SOIC package. It offers identical pinout mapping alongside superior supply efficiency and a faster slew rate.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | J-FET Amplifier 4 Circuit 14-SOIC | J-FET Amplifier 4 Circuit 14-SOIC | J-FET Amplifier 4 Circuit 14-SO | |
| Manufacturer | onsemi | Texas Instruments | STMicroelectronics | |
| Type | Linear | Linear | Linear | |
| Datasheet | Open | Open | Open | |
| Lead Time | 12 weeks | 9 weeks | 30 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.33.0001 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Slew Rate | 13V/µs | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Amplifier Type | J-FET | - | - | |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) | - | - | |
| Current - Supply | 7.2mA (x4 Channels) | - | - | |
| Number of Circuits | 4 | - | - | |
| Current - Input Bias | 50 pA | - | - | |
| Operating Temperature | 0°C ~ 70°C | - | - |
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Frequently asked questions
Yes. The onsemi LF347MX 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.
The closest qualified second sources for the onsemi LF347MX are the LF347MX/NOPB (Texas Instruments) and the LF347DT (STMicroelectronics), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the LF347MX are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The LF347MX (onsemi) is a part in the Linear category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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