ACST1235-7G footprint, schematic symbol and 3D model by STMicroelectronics

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PCB Footprints

ACST1235-7G - STMicroelectronics PCB footprint - Other - Other - D2PAK_2022-1

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Part Number ACST1235-7G
Manufacturer STMicroelectronics
Pin Count 4
Part Category Integrated Circuit
Package Category Other
Footprint Name Other - D2PAK_2022-1
Released Date Aug 26, 2022
Last Modified Date Jan 8, 2026 2:31 PM UTC
Pinout / Pin List Click Here (Member Only)

ACST1235-7G Details

Manufacturer Part Number:
ACST1235-7G
Brand Name:
STMicroelectronics
Rohs Code:
Yes
Part Life Cycle Code:
Active
Part Package Code:
D2PAK
Package Description:
ROHS COMPLIANT, PLASTIC, D2PAK-3
Pin Count:
3
Country Of Origin:
Mainland China
ECCN Code:
EAR99
HTS Code:
8541.30.00.80
Factory Lead Time:
15 Weeks
Manufacturer:
STMicroelectronics
YTEOL:
6
Additional Feature:
HIGH RELIABILITY
Configuration:
SINGLE
Critical Rate of Rise of Off-State Voltage-Min:
2000 V/us
DC Gate Trigger Current-Max:
35 mA
DC Gate Trigger Voltage-Max:
1 V
Holding Current-Max:
50 mA
JESD-30 Code:
R-PSSO-G2
JESD-609 Code:
e3
Leakage Current-Max:
1.5 mA
Moisture Sensitivity Level:
1
Number of Elements:
1
Number of Terminals:
2
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Shape:
RECTANGULAR
Package Style:
SMALL OUTLINE
Peak Reflow Temperature (Cel):
245
Qualification Status:
Not Qualified
RMS On-state Current-Max:
12 A
Repetitive Peak Off-state Voltage:
700 V
Surface Mount:
YES
Terminal Finish:
Matte Tin (Sn) - annealed
Terminal Form:
GULL WING
Terminal Position:
SINGLE
Time@Peak Reflow Temperature-Max (s):
30
Trigger Device Type:
TRIAC

ACST1235-7G Frequently Asked Questions (FAQs)

STMicroelectronics recommends a thermal pad on the bottom of the package, connected to a large copper area on the PCB to dissipate heat efficiently. A minimum of 2oz copper thickness is recommended, and the thermal pad should be connected to a ground plane to reduce thermal resistance.
To ensure accurate temperature measurement, it's essential to calibrate the device using the CAL pin. The CAL pin should be connected to a precision voltage reference, and the device should be calibrated at multiple temperatures to account for non-linearity. Additionally, the device should be operated within the recommended temperature range and supply voltage to minimize errors.
The maximum allowed voltage on the output pins is VCC + 0.3V, where VCC is the supply voltage. Exceeding this voltage may damage the device. It's essential to ensure that the output pins are not exposed to voltages higher than the recommended maximum to prevent damage or malfunction.
The ACST1235-7G has a built-in POR and BOR feature to ensure the device resets correctly during power-up and brown-out conditions. To handle these features, the device should be powered up slowly (dv/dt < 10mV/μs) to allow the POR to function correctly. Additionally, the BOR threshold should be set according to the application requirements to prevent unwanted resets.
STMicroelectronics recommends using a 10nF to 100nF ceramic capacitor in close proximity to the device's VCC pin to decouple the supply voltage. This helps to reduce noise and ensure stable operation. A larger capacitor (e.g., 1μF) can also be used in parallel to filter out lower-frequency noise.

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ACST1235-7G Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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