component
TL432BSA-7
Public Made by Adomby adom
Diodes Incorporated Voltage References, SOT-23. 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
markdownTL432BSA-7
Diodes Incorporated · Voltage References · SOT-23
TL432BSA-7 from Diodes Incorporated, in a SOT-23. 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 from VREF (2.495V ±0.5% for the B grade) up to 36V via an external R1/R2 divider; reference input current is 1 to 4 µA typical at IKA = 10mA. |
| 2 | CATHODE | passive | Shunt regulator cathode (output) that sinks 1mA to 100mA (150mA absolute max) at VKA from VREF to 36V (40V absolute max). |
| 3 | ANODE | power_in | Anode, the ground/return reference for the device, to which all voltages are referred. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| 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 (TL431B/TL432B grade) | VREF | 2.482 | 2.495 | 2.507 | V | VKA = VREF, IKA = 10mA, TA = +25°C | 3 |
| Reference voltage deviation over temperature | VDEV | 6 | 16 | mV | VKA = VREF, IKA = 10mA, TA = 0 to 70°C | 3 | |
| Reference voltage deviation over temperature | VDEV | 14 | 34 | mV | VKA = VREF, IKA = 10mA, TA = -40 to +85°C | 3 | |
| Ratio of change in reference voltage to change in cathode voltage | ΔVREF/ΔVKA | -1.4 | -2.7 | mV/V | IKA = 10mA, VKA = 10V to VREF | 3 | |
| Ratio of change in reference voltage to change in cathode voltage | ΔVREF/ΔVKA | -1 | -2 | mV/V | IKA = 10mA, VKA = 36V to 10V | 3 | |
| Reference input current | IREF | 1 | 4 | µA | IKA = 10mA, R1 = 10KΩ, R2 = ∞ | 3 | |
| IREF deviation over full temperature range | ΔIREF | 0.8 | 1.2 | µA | IKA = 10mA, R1 = 10KΩ, R2 = ∞, TA = 0 to 70°C | 3 | |
| IREF deviation over full temperature range | ΔIREF | 0.8 | 2.5 | µA | IKA = 10mA, R1 = 10KΩ, R2 = ∞, TA = -40 to +85°C | 3 | |
| Minimum cathode current for regulation | IKA(MIN) | 0.4 | 0.7 | mA | VKA = VREF | 3 | |
| Off-state current | IKA(OFF) | 0.05 | 0.5 | µA | VKA = 36V, VREF = 0V | 3 | |
| Dynamic output impedance | /ZKA/ | 0.2 | 0.5 | Ω | VKA = VREF, f = 0Hz | 3 | |
| Thermal resistance junction to ambient, SOT23 | θJA | 380 | °C/W | SOT23 | 3 | ||
| Cathode voltage | VKA | 40 | V | 2 | |||
| Continuous cathode current | IKA | 150 | mA | 2 | |||
| Reference input current | IREF | -0.05 | 10 | mA | 2 | ||
| Operating junction temperature | TJ | 150 | °C | 2 | |||
| Storage temperature | TST | -55 | 150 | °C | 2 | ||
| Power dissipation, SOT23 | PD | 330 | mW | SOT23, TJ,MAX = 150°C, ambient 25°C | 2 | ||
| Cathode voltage | VKA | 36 | V | min is VREF | 2 | ||
| Cathode current | IKA | 1 | 100 | mA | 2 | ||
| Operating ambient temperature | TA | -40 | 125 | °C | 2 |
CAD (KiCad official)
- Symbol:
TL432BSA-7 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
tl432bsa-7-etched.step/tl432bsa-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl432bsa-7.step/tl432bsa-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (14 pp, sha256
8ce0c11446beda6f, retrieved 2026-10-22, 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).