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AZ431LBZTR-E1
Public Made by Adomby adom
Diodes Incorporated Voltage References, 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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Contents
README
markdownAZ431LBZTR-E1
Diodes Incorporated · Voltage References · TO-92-3
AZ431LBZTR-E1 from Diodes Incorporated, in a TO-92-3. 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 | REF | input | Reference input that regulates at VREF of 1.240V typ (1.0% grade: 1.228V to 1.252V) with typical input current of 0.15µA, and an absolute maximum reference current of 10mA. |
| 2 | ANODE | power_in | Anode terminal, connected to the circuit ground or return, which carries cathode current of up to 100mA continuous. |
| 3 | CATHODE | passive | Cathode (shunt output) terminal that operates from VREF to 18V recommended (20V absolute maximum) and sinks 0.1mA to 100mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TO-92-3 |
| Category | Power Management ICs |
| 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 Voltage (1.0%) | VREF | 1.228 | 1.24 | 1.252 | V | VKA = VREF, IKA = 10mA, TA = +25°C | 5 |
| Deviation of Reference Voltage, 0°C to +70°C | ∆VREF | 2 | 10 | mV | VKA = VREF, IKA = 10mA | 5 | |
| Deviation of Reference Voltage, -40°C to +85°C | ∆VREF | 3 | 10 | mV | VKA = VREF, IKA = 10mA | 5 | |
| Deviation of Reference Voltage, -40°C to +125°C | ∆VREF | 4 | 15 | mV | VKA = VREF, IKA = 10mA | 5 | |
| Ratio of Change in VREF to Change in Cathode Voltage | ∆VREF/∆VKA | -0.5 | -1.5 | mV/V | IKA = 10mA, ∆VKA: VREF to 16V | 5 | |
| Reference Input Current | IREF | 0.15 | 0.4 | µA | IKA = 10mA, R1 = 10kΩ, R2 = ∞ | 5 | |
| Deviation of Reference Current Over Full Temperature Range | ∆IREF | 0.1 | 0.4 | µA | IKA = 10mA, R1 = 10kΩ, R2 = ∞, TA = -40°C to +125°C | 5 | |
| Minimum Cathode Current for Regulation | IKA(Min) | 55 | 80 | µA | VKA = VREF | 5 | |
| Off-State Cathode Current (VKA = 18V) | IKA(Off) | 0.04 | 0.1 | µA | VREF = 0, VKA = 18V | 5 | |
| Off-State Cathode Current (VKA = 6V) | IKA(Off) | 0.01 | 0.05 | µA | VKA = 6, VREF = 0 | 5 | |
| Dynamic Impedance | ZKA | 0.05 | 0.15 | Ω | VKA = VREF, IKA = 1 to 100mA, f ≤ 1.0kHz | 5 | |
| Cathode Voltage (absolute maximum) | VKA | 20 | V | 4 | |||
| Cathode Current Range, Continuous (absolute maximum) | IKA | -100 | 100 | mA | 4 | ||
| Reference Input Current Range (absolute maximum) | IREF | 10 | mA | 4 | |||
| Junction Temperature (absolute maximum) | TJ | 150 | °C | 4 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 4 | ||
| Cathode Voltage (recommended) | VKA | 18 | V | Min is VREF | 4 | ||
| Cathode Current (recommended) | IKA | 0.1 | 100 | mA | 4 | ||
| Operating Ambient Temperature Range | -40 | 125 | °C | 4 | |||
| Thermal Resistance, TO92 (Ammo Packing) | θJC | 140.8 | °C/W | TO92 (Ammo Packing) | 5 | ||
| Equivalent Full-Range Temperature Coefficient | 20 | PPM/°C | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | • Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 • Weight: | 18 |
CAD (KiCad official)
- Symbol:
AZ431LBZTR-E1 - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files:
az431lbztr-e1-etched.step/az431lbztr-e1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);az431lbztr-e1.step/az431lbztr-e1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (19 pp, sha256
6b8c6ed92d8e1c2d, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).