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LM285Z-1.2G

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onsemi Voltage Reference, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LM285Z-1.2G

onsemi · Voltage Reference · TO-92

LM285Z-1.2G from onsemi, in a TO-92. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 N.C. unconnected Not connected internally on the TO-92 package; the datasheet's TO-92 pin listing marks this pin as N.C.
2 Cathode passive Cathode of the two-terminal bandgap reference diode, which operates over a reverse current range of 10 µA to 20 mA and has a 1.235 V reverse breakdown voltage for the -1.2 version.
3 Anode passive Anode of the two-terminal bandgap reference diode; the datasheet's maximum reverse current rating is 30 mA and maximum forward current rating is 10 mA.

Key specifications

Parameter Value
Manufacturer onsemi
Package TO-92
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
Reverse Breakdown Voltage (IRmin ≤ IR ≤ 20 mA), TA = 25°C V(BR)R 1.223 1.235 1.247 V IRmin ≤ IR ≤ 20 mA 2
Reverse Breakdown Voltage (IRmin ≤ IR ≤ 20 mA), TA = Tlow to Thigh V(BR)R 1.2 1.27 V IRmin ≤ IR ≤ 20 mA, TA = Tlow to Thigh (Note 1) 2
Minimum Operating Current, TA = 25°C IRmin 10 20 µA TA = 25°C 2
Minimum Operating Current, TA = Tlow to Thigh IRmin 8 20 µA TA = Tlow to Thigh (Note 1) 2
Reverse Breakdown Voltage Change with Current, IRmin ≤ IR ≤ 1.0 mA, TA = +25°C V(BR)R 1 mV IRmin ≤ IR ≤ 1.0 mA, TA = +25°C 2
Reverse Breakdown Voltage Change with Current, IRmin ≤ IR ≤ 1.0 mA, TA = Tlow to Thigh V(BR)R 1.5 mV IRmin ≤ IR ≤ 1.0 mA, TA = Tlow to Thigh (Note 1) 2
Reverse Breakdown Voltage Change with Current, 1.0 mA ≤ IR ≤ 20 mA, TA = +25°C V(BR)R 10 mV 1.0 mA ≤ IR ≤ 20 mA, TA = +25°C 2
Reverse Breakdown Voltage Change with Current, 1.0 mA ≤ IR ≤ 20 mA, TA = Tlow to Thigh V(BR)R 20 mV 1.0 mA ≤ IR ≤ 20 mA, TA = Tlow to Thigh (Note 1) 2
Reverse Dynamic Impedance Z 0.6 Ω IR = 100 µA, TA = +25°C 2
Average Temperature Coefficient V(BR)/T 80 ppm/°C 10 µA ≤ IR ≤ 20 mA, TA = Tlow to Thigh (Note 1) 2
Wideband Noise (RMS) n 60 µV IR = 100 µA, 10 Hz ≤ f ≤ 10 kHz 2
Long Term Stability S 20 ppm/kHR IR = 100 µA, TA = +25°C ± 0.1°C 2
Reverse Current IR 30 mA 2
Forward Current IF 10 mA 2
Operating Ambient Temperature Range, LM285 TA -40 85 °C LM285 2
Operating Junction Temperature TJ 150 °C 2
Storage Temperature Range Tstg -65 150 °C 2
Electrostatic Discharge Sensitivity, Human Body Model ESD 4000 V Human Body Model (HBM) 2
Electrostatic Discharge Sensitivity, Machine Model ESD 400 V Machine Model (MM) 2
Electrostatic Discharge Sensitivity, Charged Device Model ESD 2000 V Charged Device Model (CDM) 2

CAD (KiCad official)

  • Symbol: LM285Z-1.2G
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: lm285z-1-2g-etched.step / lm285z-1-2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm285z-1-2g.step / lm285z-1-2g.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (13 pp, sha256 4300c9c0f52a7346, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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).

Datasheet PDF