Alternatives to Texas Instruments LM117H
Texas Instruments LM117H and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 LM117HTexas Instruments | LM117H/883Texas Instruments | LM117K STEELTexas Instruments | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Direct drop-in replacement with the exact same 3-pin TO-39 pin layout and electrical terminal assignments.Identical cylindrical 3-pin TO-39 hermetic metal can package dimensions and mounting footprint.Shares the same wide operating temperature, safety protections, and adjustable voltage range (1.25V to 37V). | Requires complete PCB layout and mechanical mount redesign to fit the larger TO-3 footprint.Significantly larger physical envelope, heavier weight, and different mounting style (TO-3 flange mount).Meets and exceeds electrical ratings, delivering higher current over the same wide temperature range. | ||
 AI Summary | LM117H by Texas Instruments: Linear Voltage Regulator IC Positive Adjustable 1 Output 1.5A TO-3. | This is the active military-grade sibling of the obsolete LM117H. Sourced in the identical TO-39 metal can package, it represents a true drop-in replacement that meets high-reliability military requirements without requiring a PCB redesign.
| This is the same regulator series in a larger TO-3 metal can package. It is suitable for applications that require a robust hermetic seal but can accommodate a footprint change to benefit from a higher 1.5A current rating.
| |
| Lifecycle Status | Obsolete | Unknown | Unknown | |
| Market Availability | Discontinued | Unknown | Unknown | |
| REACH | REACH | Unknown | Unknown | |
| RoHS | RoHS | Unknown | Unknown | |
| Description | Linear Voltage Regulator IC Positive Adjustable 1 Output 1.5A TO-3 | This is the active military-grade sibling of the obsolete LM117H. Sourced in the identical TO-39 metal can package, it represents a true dro | This is the same regulator series in a larger TO-3 metal can package. It is suitable for applications that require a robust hermetic seal bu | |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | |
| Type | Power Management (PMIC) | Component | Component | |
| Datasheet | Open | N/A | N/A | |
| Lead Time | 20 weeks | Unknown | Unknown | |
| Country of Origin | MY, GB, DE | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0070 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| PSRR | 80dB ~ 65dB (120Hz) | - | - | |
| Output Type | Adjustable | - | - | |
| Mounting Type | Through Hole | - | - | |
| Package / Case | TO-205AD, TO-39-3 Metal Can | - | - | |
| Current - Output | 1.5A | - | - | |
| Protection Features | Over Current, Over Temperature, Short Circuit | - | - | |
| Number of Regulators | 1 | - | - | |
| Output Configuration | Positive | - | - |
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Frequently asked questions
Yes. The Texas Instruments LM117H 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 Texas Instruments LM117H are the LM117H/883 (Texas Instruments) and the LM117K STEEL (Texas Instruments), 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 LM117H 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 LM117H (Texas Instruments) is a part in the Power Management (PMIC) category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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