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MCS1806GS-3-40-Z

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Monolithic Power Systems Current Sensors, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MCS1806GS-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 IP￾pins. 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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcs1806gs-3-40-z.step / mcs1806gs-3-40-z.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF