Alternatives to Texas Instruments LM337T
Texas Instruments LM337T and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for Texas Instruments LM337T
 LM337TTexas Instruments | LM337T/NOPBTexas Instruments |  LM337TGonsemi | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Identical TO-220-3 footprint and pinout assignment (Pin 1: ADJ, Pin 2: VIN/Tab, Pin 3: VOUT).Uses the same physical TO-220 package design and dimensions.Identical electrical characteristics, maximum ratings, and temperature range (0°C to 125°C). | Standard TO-220 footprint with identical pinout (Pin 1: ADJ, Pin 2: VIN/Heatsink, Pin 3: VOUT).Standard TO-220 package dimensions are physically interchangeable.Matches the original electrical specs, including the 1.5A output, -40V max input, and 0°C to 125°C operating temperature. | ||
 AI Summary | LM337T by Texas Instruments: Linear Voltage Regulator IC Negative Adjustable 1 Output 1.5A TO-220-3. | This is the direct RoHS-compliant replacement from the original manufacturer, offering an identical electrical, thermal, and mechanical profile. It maintains the same 1.5A output rating and 0°C to 125°C operating range. Since the original part number was phased out due to lead-free transitions, this NOPB version is the most seamless drop-in alternative.
| This is a standard second-source alternative from onsemi that provides a high-reliability replacement. It mirrors the exact electrical specifications of the original TI part, including a 1.5A current capability and a 0°C to 125°C commercial temperature range. It is highly suitable for multi-sourcing strategies.
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| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 LM317Tonsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 LM339PTROHM Semiconductor | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 LM393GOODWORK | In stock | Active | 5Alternatives availableSee Alternatives |
 LM393MTexas Instruments | In stock | Obsolete | 6Alternatives availableSee Alternatives |
 LM339DSTMicroelectronics | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 LM393Donsemi | In stock | Active | 6Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments LM337T 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 LM337T are the LM337T/NOPB (Texas Instruments) and the LM337TG (onsemi), out of 5 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 LM337T 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 LM337T (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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