component
AZ431BZ-ATRG1
Public Made by Adomby adom
Diodes Incorporated Voltage Reference, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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| README.md | 16d ago |
AZ431BZ-ATRG1
Diodes Incorporated · Voltage Reference · TO-92-3
AZ431BZ-ATRG1 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 sets the regulated cathode voltage to VREF (2.5V typ) with an external divider; reference current is 0.7µA typ, 4µA max, and IREF absolute maximum is 10mA. |
| 2 | ANODE | power_in | Anode terminal, normally connected to ground; cathode current range is -100 to 150mA absolute maximum. |
| 3 | CATHODE | passive | Cathode (shunt output) terminal that can be set from VREF to 36V recommended (40V absolute maximum) and sinks 1mA to 100mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| 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 |
|---|---|---|---|---|---|---|---|
| Reference Voltage (0.8% grade) | VREF | 2.48 | 2.5 | 2.52 | V | VKA = VREF, IKA = 10mA | 5 |
| Voltage tolerance | -0.8 | 0.8 | % | 0.8% voltage tolerance grade (part-number suffix B) | 10 | ||
| Deviation of Reference Voltage over 0 to +70°C | VREF | 4.5 | 8 | mV | VKA = VREF, IKA = 10mA, 0 to +70°C | 5 | |
| Deviation of Reference Voltage over -40 to +85°C | VREF | 4.5 | 10 | mV | VKA = VREF, IKA = 10mA, -40 to +85°C | 5 | |
| Deviation of Reference Voltage over -40 to +125°C | VREF | 4.5 | 16 | mV | VKA = VREF, IKA = 10mA, -40 to +125°C | 5 | |
| Ratio of Change in Reference Voltage to Change in Cathode Voltage (10V to VREF) | VREF/VKA | -1 | -2.7 | mV/V | IKA = 10mA, VKA = 10V to VREF | 5 | |
| Ratio of Change in Reference Voltage to Change in Cathode Voltage (36V to 10V) | VREF/VKA | -0.5 | -2 | mV/V | IKA = 10mA, VKA = 36V to 10V | 5 | |
| Reference Current | IREF | 0.7 | 4 | µA | IKA = 10mA, R1 = 10kΩ, R2 = ∞ | 5 | |
| Deviation of Reference Current over Full Temperature Range | IREF | 0.4 | 1.2 | µA | IKA = 10mA, R1 = 10kΩ, R2 = ∞, TA = -40 to +125°C | 5 | |
| Minimum Cathode Current for Regulation | IKA(Min) | 0.4 | 1 | mA | VKA = VREF | 5 | |
| Off-state Cathode Current | IKA(Off) | 0.05 | 1 | µA | VKA = 36V, VREF = 0 | 5 | |
| Dynamic Impedance | ZKA | 0.15 | 0.5 | Ω | VKA = VREF, IKA = 1 to 100mA, f ≤ 1.0kHz | 5 | |
| Equivalent Full-range Temperature Coefficient | 20 | ppm/°C | Listed as typical in Features; no test conditions printed | 1 | |||
| Cathode Voltage (absolute maximum) | VKA | 40 | V | 4 | |||
| Cathode Current Range (continuous) | IKA | -100 | 150 | mA | Continuous | 4 | |
| Reference Input Current Range | IREF | 10 | mA | 4 | |||
| Power Dissipation (Z package, TO92) | PD | 770 | mW | Z, R package | 4 | ||
| Thermal Resistance Junction to Ambient (TO92) | θJA | 165 | °C/W | Junction to ambient | 4 | ||
| Junction Temperature | TJ | 150 | °C | 4 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 4 | ||
| ESD (Human Body Model) | ESD | 2000 | V | Human Body Model | 4 | ||
| Cathode Voltage (recommended) | VKA | 36 | V | Minimum is VREF (printed as a symbol, not a number) | 4 | ||
| Cathode Current (recommended) | IKA | 1 | 100 | mA | 4 | ||
| Operating Ambient Temperature Range | TA | -40 | 125 | °C | 4 | ||
| Thermal Resistance (TO92, θJC row) | θJC | 81.63 | °C/W | Thermal resistance row under electrical characteristics; TO92 value as printed | 5 |
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 |
|---|---|---|---|---|
| housing | Abs | ESD ESD (Human Body Model) 2000 V Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and | 4 |
CAD (KiCad official)
- Symbol:
AZ431BZ-ATRG1 - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files:
az431bz-atrg1-etched.step/az431bz-atrg1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);az431bz-atrg1.step/az431bz-atrg1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (19 pp, sha256
af7f4848d81a3997, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).