component
AZ431AZ-ATRE1
Public Made by Adomby adom
Diodes Incorporated Voltage Reference, TO-92-2.54mm. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Contents
README
markdownAZ431AZ-ATRE1
Diodes Incorporated · Voltage Reference · TO-92-2.54mm
AZ431AZ-ATRE1 from Diodes Incorporated, in a TO-92-2.54mm. 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 | REF | input | Reference input to the internal error amplifier. Regulation forces this pin to the internal 2.5 V VREF (0.4% tol) versus ANODE, typically driven from an external resistor divider between CATHODE and ANODE to program the output. Max continuous input current 10 mA; typical IREF ~0.7 uA. |
| 2 | CATHODE | passive | Shunt cathode (K). Sinks the regulation current to hold VKA at the programmed voltage set by the REF divider. Absolute max VKA = 40 V, recommended 2.5 V to 36 V; cathode current range -100 mA to +150 mA (recommended 1 mA to 100 mA for regulation). Dynamic impedance ~0.15 Ω typical. |
| 3 | ANODE | passive | Shunt anode (A), the common reference return for both the cathode current and the REF input divider. Typically tied to circuit ground in a shunt-regulator configuration. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TO-92-2.54mm |
| Category | PMIC |
| Pins | 3 |
Ordering variants
AZ431AZ-ATRE1AZ431AZ-ATRE1AZ431ARAZ431AZ-ATRE1AZ431AN
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Cathode Voltage | VKA | 40 | V | 4 | |||
| Cathode Current Range (Continuous) | IKA | -100 | 150 | mA | 4 | ||
| Reference Input Current Range | IREF | 10 | mA | 4 | |||
| Power Dissipation | PD | 770 | mW | Z, R Package | 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 | Min = VREF | 4 | ||
| Cathode Current (recommended) | IKA | 1 | 100 | mA | 4 | ||
| Operating Ambient Temperature Range | TA | -40 | 125 | °C | 4 | ||
| Reference Voltage | VREF | 2.49 | 2.5 | 2.51 | V | 0.4% variant; VKA = VREF, IKA = 10mA | 5 |
| Deviation of Reference Voltage Over Full Temperature Range | VREF | 4.5 | 8 | mV | VKA = VREF, IKA = 10mA, 0 to +70°C | 5 | |
| Deviation of Reference Voltage Over Full Temperature Range | VREF | 4.5 | 10 | mV | VKA = VREF, IKA = 10mA, -40 to +85°C | 5 | |
| Deviation of Reference Voltage Over Full Temperature Range | 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 | 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 | 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 | |
| Thermal Resistance (Junction to Ambient) | θJA | 165 | °C/W | TO92; junction to ambient (absolute maximum table) | 4 | ||
| Thermal Resistance (Junction to Case) | θJC | 81.63 | °C/W | TO92 | 5 | ||
| Full-range Temperature Coefficient | 20 | ppm/°C | Typical, per Features list | 1 |
CAD (KiCad official)
- Symbol:
AZ431AZ-ATRE1 - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-2.54mm (KiCad packages3D, STEP)
- 3D model files:
az431az-atre1-etched.step/az431az-atre1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);az431az-atre1.step/az431az-atre1.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
az431az-atre1.step |
27 KB | You want the bare part, or you mark your own boards. |
az431az-atre1-etched.step |
1.4 MB | You want the part with AZ431AZ-ATRE1 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 393 faces against 19 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (19 pp, sha256
af7f4848d81a3997, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).