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Texas Instruments INA139QPWRQ1 — Discrete Semiconductors

INA139QPWRQ1 Current Monitor, ±0.5%, 2.7-40V, 8-TSSOP

MPNINA139QPWRQ1
End of Life

Texas Instruments INA139QPWRQ1 Automotive AEC-Q100 current monitor, ±0.5% accuracy, high-side sensing, 2.7V to 40V input, -40°C to 125°C, 8-TSSOP package, Tape & Reel.

$2.88Ref. price · indicative, final on quote
Texas Instruments INA139QPWRQ1 datasheet (PDF)
Packaging8-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
SeriesAutomotive, AEC-Q100
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

INA139QPWRQ1 specifications
ParameterValue
SeriesAutomotive, AEC-Q100
MountingSurface Mount
Voltage - input2.7V ~ 40V
Operating temperature-40°C ~ 125°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
Accuracy±0.5%
FunctionCurrent Monitor
Case8-TSSOP (0.173\", 4.40mm Width)
Sensing methodHigh-Side

Product details

High-side current monitor with ±0.5% accuracy across 2.7V to 40V

The Texas Instruments INA139QPWRQ1 is a high-side current monitor that measures load current by sensing the voltage drop across an external shunt resistor, delivering a proportional output current with ±0.5% accuracy. Its input voltage range spans 2.7V to 40V, making it suitable for monitoring 12V and 24V automotive rails as well as industrial supply buses without external level shifting.

8-TSSOP package and surface-mount board integration

Surface-mount assembly with Tape & Reel packaging supports automated pick-and-place for volume production; the Cut Tape option works for prototype runs without committing to a full reel.

Frequently asked questions

Where can I buy INA139QPWRQ1 or check stock?

Submit a request with your target quantity and target price for a firm quote.

What is the closest functional second-source for INA139QPWRQ1?

The INA234BIYBJR is a functional peer with similar ±0.5% accuracy and high-side sensing capability, but it operates from a lower 1.7V input and uses a different package (WCSP vs 8-TSSOP). The INA199B2QDCKRQ1 is an automotive AEC-Q100 zero-drift current-sense amplifier with 1.5% accuracy and high/low-side sensing, but its 0.1V minimum input voltage limits it to very low-side shunt drops. Neither is a drop-in replacement without PCB changes.

What compliance documentation does Texas Instruments provide for INA139QPWRQ1?

Texas Instruments typically provides a Certificate of Compliance and material declaration upon request through distribution channels.