component
L78L12ABZ
Public Made by Adomby adom
STMicroelectronics Voltage Reference, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownL78L12ABZ
STMicroelectronics · Voltage Reference · TO-92-3
L78L12ABZ from STMicroelectronics, in a TO-92-3. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VOUT | power_out | Regulated positive output voltage pin, nominal 12 V (±4% for the A grade), capable of delivering up to 100 mA output current with a 0.1 µF output capacitor recommended. |
| 2 | GND | power_in | Common/ground reference pin for the regulator. |
| 3 | VIN | power_in | Unregulated DC input voltage pin, rated up to 35 V absolute maximum for the 12 V output version, with a 0.33 µF input capacitor recommended if the device is located far from the filter capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-92-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Output voltage | VO | 11.5 | 12 | 12.5 | V | TJ = 25 °C | 12 |
| Output voltage | VO | 11.4 | 12.6 | V | IO = 1 to 40 mA, VI = 14.5 to 27 V | 12 | |
| Line regulation | ΔVO | 250 | mV | VI = 14.5 to 27 V, TJ = 25 °C | 12 | ||
| Line regulation | ΔVO | 200 | mV | VI = 16 to 27 V, TJ = 25 °C | 12 | ||
| Load regulation | ΔVO | 100 | mV | IO = 1 to 100 mA, TJ = 25 °C | 12 | ||
| Load regulation | ΔVO | 50 | mV | IO = 1 to 40 mA, TJ = 25 °C | 12 | ||
| Quiescent current | Id | 6.5 | mA | TJ = 25 °C | 12 | ||
| Quiescent current | Id | 6 | mA | TJ = 125 °C | 12 | ||
| Quiescent current change | ΔId | 0.1 | mA | IO = 1 to 40 mA | 12 | ||
| Quiescent current change | ΔId | 1.5 | mA | VI = 16 to 27 V | 12 | ||
| Supply voltage rejection | SVR | 37 | 42 | dB | VI = 15 to 25 V, f = 120 Hz, IO = 40 mA, TJ = 25 °C | 12 | |
| Dropout voltage | Vd | 1.7 | V | 12 | |||
| Output noise voltage | eN | 80 | µV | B = 10 Hz to 100 kHz, TJ = 25 °C | 12 | ||
| DC input voltage | VI | 35 | V | VO = 12 to 15 V | 4 | ||
| Output current | IO | 100 | mA | 4 | |||
| Storage temperature range | TSTG | -65 | 150 | °C | 4 | ||
| Operating junction temperature range | TOP | -40 | 125 | °C | for L78LxxAB | 4 | |
| Thermal resistance junction-ambient | RthJA | 200 | °C/W | TO-92 package | 4 |
CAD (KiCad official)
- Symbol:
L78L12ABZ - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files:
l78l12abz-etched.step/l78l12abz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);l78l12abz.step/l78l12abz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (40 pp, sha256
19755abefe19a8b0, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-sonnet-5(text+vision), consensusclaude-opus-4-8(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).