TL431BCPK Texas Instruments Integrated Circuit (Other) In Stock
The TL431BCPK is a precision programmable shunt voltage reference IC by Texas Instruments in a 3-pin SOT-23 package, with a tightly regulated output voltage of 2.483V to 2.507V and up to 100 mA output current. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TL431BCPK Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1120(MOQ 100)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TL431BCPK?
- Precision 2.495V reference voltage (±0.5% tolerance, 2.483V–2.507V) ensures highly accurate voltage regulation in power supply and feedback circuits
- 100 mA maximum output current capability enables direct use as a shunt regulator in low-power designs without additional pass transistors
- Compact 3-pin SOT-23 (PSSO-F3) package with RoHS e3 compliance and 15-year EOL guarantee for long-lifecycle power management designs
What is TL431BCPK used for?
The TL431BCPK is widely used as a precision voltage reference and shunt regulator in switch-mode power supplies, linear regulators, and battery chargers requiring stable 2.5V feedback references. Its tight output voltage tolerance makes it suitable for error amplifier circuits in isolated flyback converters and offline power adapters using optocoupler feedback. It is also applied in precision analog signal conditioning, ADC reference circuits, and threshold detection in industrial and consumer electronics.
What are the specifications of TL431BCPK?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Analog IC - Other Type | TWO TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | R-PSSO-F3 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Current-Max | 0.1A |
| Output Voltage-Max | 2.507V |
| Output Voltage-Min | 2.483V |
| Output Voltage-Nom | 2.495V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TO-243 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temp Coef of Voltage-Max | 92ppm/°C |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | FLAT |
| Terminal Pitch | 1.5mm |
| Terminal Position | SINGLE |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Trim/Adjustable Output | YES |
| Voltage Tolerance-Max | 0.5% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mainland China |
Where can I find the TL431BCPK datasheet?
TL431BCPK Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TL431BCPK?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the output voltage of the TL431BCPK?
The TL431BCPK provides a precision output voltage range of 2.483V to 2.507V, with a nominal value of approximately 2.495V. This tight tolerance makes it suitable for precision voltage reference and regulation applications in power supplies and analog signal circuits.
What is the maximum output current of the TL431BCPK?
The TL431BCPK supports a maximum output current of 100 mA, allowing it to function as a shunt voltage regulator in low-power designs. For higher current applications, it is typically used to drive the base of an external NPN transistor to increase current handling capability.
What package does the TL431BCPK use?
The TL431BCPK is housed in a 3-pin SOT-23 surface-mount package (JESD-30 code R-PSSO-F3), which is an ultra-compact footprint ideal for space-constrained power supply designs, portable electronics, and high-density PCB layouts in consumer and industrial products.
What are typical applications for the TL431BCPK?
The TL431BCPK is used as a shunt voltage reference in switch-mode power supply feedback loops, optocoupler-based isolated converters, linear voltage regulators, battery charger circuits, ADC reference sources, and precision comparator threshold setting in both consumer and industrial electronics designs.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.1465 | $14.65 |
| 250+ | $0.1350 | $33.74 |
| 500+ | $0.1280 | $63.99 |
| 1000+ | $0.1210 | $121.00 |
| 2000+ | $0.1170 | $234.00 |
| 5000+ | $0.1120 | $560.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit