Specs side by side
2 parts compared · 0 differing specs across 5 total parameters.
| Parameter | ||
|---|---|---|
| Case | TO-220 / SOT-223 / TO-92 (L) | TO-220 / SOT-223 / TO-92 (L) |
| Component Category | Adjustable Negative Voltage Regulators | Adjustable Negative Voltage Regulators |
| Market Reality | The LM337 is the negative half of every split supply built since the 1970s - the mirror of the LM317 across the ground rail, with the same 1.25V reference, the same two-resistor adjustment and the same grade ladder (L for 100mA in TO-92, M for 500mA, the plain part at 1.5A). The trap is written into the metal: on the TO-220 bodies the LM337 and LM317 do not share a pin orientation - the input and output land on exchanged pins, because the tab follows the input on the negative part and the output on the positive one. Every substitution in this family is safe electrically and dangerous mechanically, and the split-supply repair that "works except the negative rail is dead" usually put a correct part in the wrong orientation. | The LM337 is the negative half of every split supply built since the 1970s - the mirror of the LM317 across the ground rail, with the same 1.25V reference, the same two-resistor adjustment and the same grade ladder (L for 100mA in TO-92, M for 500mA, the plain part at 1.5A). The trap is written into the metal: on the TO-220 bodies the LM337 and LM317 do not share a pin orientation - the input and output land on exchanged pins, because the tab follows the input on the negative part and the output on the positive one. Every substitution in this family is safe electrically and dangerous mechanically, and the split-supply repair that "works except the negative rail is dead" usually put a correct part in the wrong orientation. |
| Role In Circuit | Original Reference Part | Original Reference Part |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | Active Shenzhen Spot Sourcing (24–48h) |