# OPA137N

**Texas Instruments** · FET Input Amplifiers · SOT-23-5

OPA137N from Texas Instruments, in a SOT-23-5. 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 | Out | output | Amplifier output, swings to (V-)+1.2V and (V+)-1.1V with a 10kΩ load at VS = ±15V and is short-circuit current limited to -25/+60mA. |
| 2 | V- | power_in | Negative supply; total supply (V+ to V-) is ±2.25V to ±18V (+4.5V to +36V single supply), bypassed with a ceramic capacitor of 10nF or larger. |
| 3 | +In | input | Non-inverting input, with common-mode range from (V-)+3V up to V+ and typical bias current of ±10pA. |
| 4 | -In | input | Inverting input, with common-mode range from (V-)+3V up to V+ and input current limited to 2mA when the voltage exceeds supply by the diode clamp. |
| 5 | V+ | power_in | Positive supply; total supply (V+ to V-) is ±2.25V to ±18V (+4.5V to +36V single supply) with 36V absolute maximum, bypassed with a ceramic capacitor of 10nF or larger. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `OPA137N`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `opa137n-etched.step` / `opa137n-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `opa137n.step` / `opa137n.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/opa2137) (23 pp, sha256 `8b2fe6bd5f1aedcd`, retrieved 2026-10-12, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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).

[Datasheet PDF](docs/opa137n-datasheet.pdf)