# Adafruit AT42QT1010 Capacitive Touch (momentary)

> Adafruit 1374 standalone momentary capacitive touch breakout: Microchip AT42QT1010, one built-in touch pad (or wire your own pad), active-high output with LED, no microcontroller needed, 1.8–5.5 V supply, 0.5 mA fast mode or 50 µA low-power, 28 × 20 mm, 1.87 g — a one-channel touch switch for a robot button or skin patch.

- Manufacturer: Adafruit Industries
- Part number: 1374
- Category: Tactile & touch sensors
- Canonical page: https://www.xirkit.io/products/adafruit-at42qt1010-capacitive-touch-momentary-ba53
- Pinout: https://www.xirkit.io/products/adafruit-at42qt1010-capacitive-touch-momentary-ba53/pinout
- Structured JSON: https://www.xirkit.io/products/adafruit-at42qt1010-capacitive-touch-momentary-ba53/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Sensing | capacitive |
| Active area shape | single built-in pad |
| Touch channels | 1 |
| Output | digital, active high while touched |
| Interface | digital |
| Weight | 1.87 g |
| Supply voltage | 1.8–5.5 V |
| Dimensions | 28 × 20 × 1.6 mm |

## Pinout (3 pins, 0 with electrical limits)

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| VDD | — | power in | — | power_in | — | — | — | — | — | — | — |
| GND | — | ground | — | ground | — | — | — | — | — | — | — |
| OUT | — | output | — | out | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| www.adafruit.com | 5.95 USD | in_stock | 2026-09-29 | https://www.adafruit.com/product/1374 |

## FAQ

**What voltage powers the Adafruit AT42QT1010 Capacitive Touch?**

Supply range 1.8–5.5 V.

**How much does the Adafruit AT42QT1010 Capacitive Touch cost?**

From $5.95 at www.adafruit.com. Prices are observed unit prices before tax and shipping.

**What are the Adafruit AT42QT1010 Capacitive Touch dimensions?**

28 × 20 × 1.6 mm. A STEP model is available for enclosure fit checks.

**Where does this Adafruit AT42QT1010 Capacitive Touch data come from?**

Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.

## Sources

- [Adafruit AT42QT1010 Capacitive Touch (momentary) datasheet](https://cdn-learn.adafruit.com/downloads/pdf/adafruit-capacitive-touch-sensor-breakouts.pdf)
- [www.adafruit.com listing](https://www.adafruit.com/product/1374)

## Part graph

### Built from

- AT42QT1010 — sensor on the Adafruit AT42QT1010 Capacitive Touch (momentary)

### Alternatives (by use case)

- [Alpha MF02A Square FSR 38 mm (1–49 N)](https://www.xirkit.io/products/alpha-mf02a-square-fsr-38-mm-1-49-n-09b0) — Both serve touch and force sensing — check the trade-offs; $5.95 vs $5.95
- [Adafruit MPR121 12-Key Capacitive Touch](https://www.xirkit.io/products/adafruit-mpr121-12-key-capacitive-touch-b241) — Both serve touch and force sensing — check the trade-offs; $5.95 vs $7.95
- [Alpha MF01A Round FSR 14.7 mm (0.3–10 N)](https://www.xirkit.io/products/alpha-mf01a-round-fsr-14-7-mm-0-3-10-n-22e6) — Both serve touch and force sensing — check the trade-offs; $5.95 vs $3.95