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MCS1806GS-3-40-Z
Public Made by Adomby adom
Monolithic Power Systems Current Sensors, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownMCS1806GS-3-40-Z
Monolithic Power Systems · Current Sensors · SOIC-8
MCS1806GS-3-40-Z from Monolithic Power Systems, in a SOIC-8. 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 | IP+ | passive | Primary current (+) terminal for the current being sampled; internally connected to pin 2 (IP+). |
| 2 | IP+ | passive | Primary current (+) terminal for the current being sampled; internally connected to pin 1 (IP+). |
| 3 | IP- | passive | Primary current (-) terminal for the current being sampled; internally connected to pin 4 (IP-). |
| 4 | IP- | passive | Primary current (-) terminal for the current being sampled; internally connected to pin 3 (IP-). |
| 5 | GND | power_in | Signal ground terminal pin. |
| 6 | FILT | passive | Terminal for the external capacitor CF that sets the bandwidth (see Figure 9); can be left floating if bandwidth setting is not required. |
| 7 | VOUT | output | Analog output, proportional to the primary current within the specified range (IPMAX = ±40A for this variant). |
| 8 | VCC | power_in | Voltage supply, 3.0V to 3.6V for the 3.3V option; bypass with a 1µF low-ESR ceramic capacitor placed as close to the VCC pin as possible. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Monolithic Power Systems |
| Package | SOIC-8 |
| Category | Magnetic Sensors |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Optimized accuracy range | IP | -40 | 40 | A | 7 | ||
| Sensitivity error | ESENS | -2 | 2 | % | IP = 40A, TJ = 25°C to 125°C | 7 | |
| Sensitivity error | ESENS | -1.5 | 1.5 | % | IP = 40A, TJ = -40°C to +25°C | 7 | |
| Offset voltage | VOE | -10 | 10 | mV | IP = 0A, TJ = 25°C to 125°C | 7 | |
| Offset voltage | VOE | -5 | 5 | mV | IP = 0A, TJ = -40°C to +25°C | 7 | |
| Total output error | ETOT | -2.5 | 2.5 | % | IP = 40A, TJ = 25°C to 125°C | 7 | |
| Total output error | ETOT | -1.5 | 1.5 | % | IP = 40A, TJ = -40°C to +25°C | 7 | |
| Sensitivity error lifetime drift | ESENS(D) | -1 | 1 | % | 7 | ||
| Total output error lifetime drift | ETOT(D) | -1 | 1 | % | 7 | ||
| Supply voltage (3.3V option) | VCC | 3 | 3.6 | V | 3.3V option | 5 | |
| VCC under-voltage lockout (UVLO) threshold | VCC_UVLO | 2 | 2.5 | 3 | V | VCC rising | 5 |
| Ratiometry coefficient | KSENS | 98 | 100 | 102 | % | VCC from VCC_MIN to VCC_MAX | 5 |
| Ratiometry coefficient | KVO | 99 | 100 | 101 | % | VCC from VCC_MIN to VCC_MAX | 5 |
| Hall plate matching | MH | -1 | 1 | % | 5 | ||
| Sensitivity | SENS | 33 | mV/A | -40A ≤ IP ≤ +40A, TJ = 25°C | 7 | ||
| Output capacitance load | CL | 10 | nF | From VOUT to GND | 5 | ||
| Output resistive load | RL | 4.7 | kΩ | From VOUT to GND | 5 | ||
| Internal filter resistance | RFI | 1.5 | kΩ | 5 | |||
| Internal filter capacitance | CFI | 1 | nF | 5 | |||
| Primary conductor resistance | RP | 0.9 | mΩ | Effective | 5 | ||
| Frequency bandwidth | fBW | 100 | kHz | FILT disconnected | 5 | ||
| Power-on time | tPO | 90 | µs | IP = IPMAX, FILT disconnected | 5 | ||
| Rising time | tR | 4 | µs | IP = IPMAX, FILT disconnected | 5 | ||
| Propagation delay | tPD | 1.5 | µs | IP = IPMAX, FILT disconnected | 5 | ||
| Response time | tRESPONSE | 5 | µs | IP = IPMAX, FILT disconnected | 5 | ||
| Noise density | IND | 200 | µA(RMS)/√Hz | Input referred noise density | 5 | ||
| Noise | IN | 50 | mA(RMS) | Input referred, 1nF on FILT (60kHz bandwidth) | 5 | ||
| Nonlinearity | ELIN | 0.5 | % | Across full IP range | 5 | ||
| First Hall magnetic coupling factor | PMCF1 | 0.6 | mT/A | 5 | |||
| Second Hall magnetic coupling factor | PMCF2 | 0.3 | mT/A | 5 | |||
| Saturation voltage low (3.3V option) | VOUT(L) | 0.3 | V | 3.3V option, RL = 4.7kΩ | 5 | ||
| Supply voltage (VCC) for the 3.3V option | VCC | 3 | 3.6 | V | 3.3V option | 3 | |
| Operating junction temperature | TJ | -40 | 125 | °C | 3 | ||
| Supply voltage (VCC) | VCC | -0.1 | 6 | V | 3 | ||
| Output voltage (VOUT) | VOUT | -0.1 | 6 | V | 3 | ||
| Filter voltage | VFILT | -0.1 | 6 | V | 3 | ||
| Junction temperature | 165 | °C | 3 | ||||
| Storage temperature | -65 | 165 | °C | 3 | |||
| ESD human body model (HBM) | -2 | 2 | kV | Human body model (HBM) | 3 | ||
| ESD charged device model (CDM) | -2 | 2 | kV | Charged device model (CDM) | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | the primary conductor via the IP+ and IPpins. 2. Ensure that the copper covers both the top | 15 |
CAD (KiCad official)
- Symbol:
MCS1806GS-3-40-Z - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
mcs1806gs-3-40-z-etched.step/mcs1806gs-3-40-z-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mcs1806gs-3-40-z.step/mcs1806gs-3-40-z.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Monolithic Power Systems datasheet (19 pp, sha256
48cef136766659b9, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).