# MG90S Metal Gear Micro Servo

> MG90S metal-gear micro servo: 4.8–6 V, 180° travel, 1.8 kg·cm stall at 4.8 V and 2.2 kg·cm at 6 V (Tower Pro spec), 0.10 s/60° at 4.8 V, 700 mA stall and 10 mA idle measured by ProtoSupplies, 13.4 g, 22.8 x 12.4 mm case — the metal-gear upgrade of the SG90 with the same footprint class.

- Manufacturer: Generic
- Part number: MG90S
- Category: Actuators
- Canonical page: https://www.xirkit.io/products/generic-mg90s-metal-gear-micro-servo-40e6
- Pinout: https://www.xirkit.io/products/generic-mg90s-metal-gear-micro-servo-40e6/pinout
- Structured JSON: https://www.xirkit.io/products/generic-mg90s-metal-gear-micro-servo-40e6/data.json
- Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit.

## Key specifications

| Property | Value |
| --- | --- |
| Actuator type | pwm_servo |
| Gearbox | metal gear train |
| Peak torque | 0.216 N·m |
| No-load speed | 125 rpm |
| Rated voltage | 6 V |
| Encoder | potentiometer |
| Control interface | PWM |
| Control modes | position (180°) |
| Dimensions | 32.1 × 12.4 × 32.5 mm |
| Operating temperature | 0 to 55 °C |

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

| Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| PWM | 1×3 female connector (JR-style) | signal | — | pwm | — | — | — | — | — | — | — |
| VCC | 1×3 female connector (JR-style) | supply | — | vcc | — | — | — | — | — | — | — |
| GND | 1×3 female connector (JR-style) | ground | — | ground | — | — | — | — | — | — | — |

## Where to buy

| Supplier | Price | Stock | Checked | URL |
| --- | --- | --- | --- | --- |
| protosupplies.com | 5.49 USD | in_stock | 2026-10-13 | https://protosupplies.com/product/servo-motor-micro-mg90s/ |

## FAQ

**How much does the MG90S Metal Gear Micro Servo cost?**

From $5.49 at protosupplies.com. Prices are observed unit prices before tax and shipping.

**What are the MG90S Metal Gear Micro Servo dimensions?**

32.1 × 12.4 × 32.5 mm. A STEP model is available for enclosure fit checks.

**Where does this MG90S Metal Gear Micro Servo 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

- [MG90S Metal Gear Micro Servo datasheet](https://protosupplies.com/product/servo-motor-micro-mg90s/)
- [protosupplies.com listing](https://protosupplies.com/product/servo-motor-micro-mg90s/)

## Part graph

### Alternatives (by use case)

- [Feetech SCS0009 2.3 kg·cm Micro Servo](https://www.xirkit.io/products/feetech-scs0009-2-3-kg-cm-micro-servo-cdf9) — Both serve grasping and manipulation — check the trade-offs; $5.49 vs $9
- [Waveshare SC09 Micro Bus Servo 2.3 kg·cm](https://www.xirkit.io/products/waveshare-sc09-micro-bus-servo-2-3-kg-cm-f518) — Both serve robot joints and actuation — check the trade-offs; $5.49 vs $8.99

### Variants

- [SG90 9 g Micro Servo](https://www.xirkit.io/products/generic-sg90-9-g-micro-servo-ab4a) — Metal-gear version of the SG90 9 g micro servo: same 3-wire PWM interface and micro case class, 2.2 vs 1.8 kgf·cm stall torque, 13.4 vs 9 g