component
TL431AILPG
Public Made by Adomby adom
onsemi Voltage Reference, TO-92. 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
markdownTL431AILPG
onsemi · Voltage Reference · TO-92
TL431AILPG 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 | Reference | input | Reference input (REF) that sets the programmed output voltage through the external resistor divider; the datasheet gives a reference input current range of -0.05 to +10 mA continuous and a Vref of 2.5 V. |
| 2 | Anode | passive | Common anode terminal; the cathode-to-anode voltage must stay between Vref and 36 V in recommended operation, with a 37 V absolute maximum. |
| 3 | Cathode | passive | Cathode terminal of the shunt regulator, which carries 1.0 to 100 mA in recommended operation and 150 mA maximum continuous (-100 to +150 mA range). |
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 |
|---|---|---|---|---|---|---|---|
| Reference Input Voltage, TA = 25°C | Vref | 2.47 | 2.495 | 2.52 | V | VKA = Vref, IK = 10 mA, TA = 25°C | 4 |
| Reference Input Voltage, TA = Tlow to Thigh | Vref | 2.44 | 2.55 | V | VKA = Vref, IK = 10 mA, TA = Tlow to Thigh (Note 6) | 4 | |
| Reference Input Voltage Deviation Over Temperature Range | Vref | 7 | 30 | mV | VKA = Vref, IK = 10 mA | 4 | |
| Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage (VKA = 10 V to Vref) | Vref | -1.4 | -2.7 | mV/V | IK = 10 mA (Figure 2), VKA = 10 V to Vref | 4 | |
| Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage (VKA = 36 V to 10 V) | VKA | -1 | -2 | mV/V | IK = 10 mA (Figure 2), VKA = 36 V to 10 V | 4 | |
| Reference Input Current, TA = 25°C | Iref | 1.1 | 2 | μA | IK = 10 mA, R1 = 10 k, R2 = ∞, TA = 25°C | 4 | |
| Reference Input Current, TA = Tlow to Thigh | Iref | 4 | μA | IK = 10 mA, R1 = 10 k, R2 = ∞, TA = Tlow to Thigh (Note 6) | 4 | ||
| Reference Input Current Deviation Over Temperature Range | Iref | 0.8 | 2.5 | μA | IK = 10 mA, R1 = 10 k, R2 = ∞ | 4 | |
| Minimum Cathode Current For Regulation | Imin | 0.5 | 1 | mA | VKA = Vref (Figure 1) | 4 | |
| Off-State Cathode Current | Ioff | 20 | 1000 | nA | VKA = 36 V, Vref = 0 V | 4 | |
| Dynamic Impedance | /ZKA/ | 0.22 | 0.5 | Ω | VKA = Vref, IK = 1.0 mA to 100 mA, f ≤ 1.0 kHz | 4 | |
| Cathode to Anode Voltage (maximum rating) | VKA | 37 | V | 2 | |||
| Cathode Current Range, Continuous | IK | -100 | 150 | mA | 2 | ||
| Reference Input Current Range, Continuous | Iref | -0.05 | 10 | mA | 2 | ||
| Operating Junction Temperature | TJ | 150 | °C | 2 | |||
| Operating Ambient Temperature Range (TL431AI) | TA | -40 | 85 | °C | Full operating ambient temperature range, TL431AI grade | 2 | |
| Storage Temperature Range | Tstg | -65 | 150 | °C | 2 | ||
| ESD Human Body Model | HBM | 2000 | V | Per JEDEC JESD22-A114F; printed as >2000 | 2 | ||
| ESD Machine Model | MM | 200 | V | Per JEDEC JESD22-A115C; printed as >200 | 2 | ||
| ESD Charged Device Model | CDM | 500 | V | Per JEDEC JESD22-C101E; printed as >500 | 2 | ||
| Cathode to Anode Voltage (recommended) | VKA | 36 | V | Minimum printed as Vref (symbolic, not numeric) | 2 | ||
| Cathode Current (recommended) | IK | 1 | 100 | mA | 2 | ||
| Derating above 25°C Ambient Temperature, D/LP Suffix Plastic Package | PD | 0.7 | W | Derate above 25°C ambient temperature, D and LP suffix plastic package | 2 | ||
| Derating above 25°C Case Temperature, D/LP Suffix Plastic Package | PD | 1.5 | W | Derate above 25°C case temperature, D and LP suffix plastic package | 2 | ||
| Thermal Resistance, Junction-to-Ambient (LP Suffix, TO-92) | RJA | 178 | °C/W | LP suffix package | 3 | ||
| Thermal Resistance, Junction-to-Case (LP Suffix, TO-92) | RJC | 83 | °C/W | LP suffix package | 3 | ||
| Reference Voltage Tolerance (ordering table, TL431AILPG) | 1 | % | 13 |
CAD (KiCad official)
- Symbol:
TL431AILPG - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
tl431ailpg-etched.step/tl431ailpg-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431ailpg.step/tl431ailpg.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (22 pp, sha256
c82bb95655b732ca, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).