Solid state relay driver Broadcom ACPL-K308U-500E with photovoltaic diode array and turn off circuit

Key Attributes
Model Number: ACPL-K308U-500E
Product Custom Attributes
Operating Temperature:
-40℃~+125℃
Isolation Voltage(Vrms):
5kV
Voltage - Supply:
1.4V
Number Of Channels:
1
Mfr. Part #:
ACPL-K308U-500E
Package:
SOIC-8-6.8mm
Product Description

Product Overview

The Broadcom ACPL-K308U is an industrial photovoltaic driver designed for high-voltage MOSFETs in solid-state relay applications. It features an AlGaAs infrared LED input optically coupled to a photovoltaic diode array and a turn-off circuit. This driver enables fast turn-on and turn-off for applications such as inrush current prevention, insulation resistance measurement, and leakage current detection. It offers galvanic isolation and high input-to-output insulation voltage, making it suitable for demanding industrial environments.

Product Attributes

  • Brand: Broadcom
  • Model: ACPL-K308U
  • Package: Stretched SO-8
  • Certifications: IEC/EN/DIN EN 60747-5-5, UL 1577, CSA Component Acceptance
  • Material Group: IIIa (DIN VDE 0109)
  • Pollution Degree: 2 (DIN VDE 0110/1.89)
  • Climatic Classification: 40/125/21

Technical Specifications

Parameter Symbol Minimum Typical Maximum Units Test Conditions Notes
Operating Temperature Range TA -40 125 C
Open Circuit Voltage VOC 5.4 8.0 V IF = 5 mA, IO = 0 mA
Open Circuit Voltage VOC 5.8 8.2 V IF = 10 mA, IO = 0 mA
Short Circuit Current ISC 11 40 A IF = 5 mA, VO = 0V
Short Circuit Current ISC 24 70 A IF = 10 mA, VO = 0V
Input Forward Voltage VF 1.25 1.4 1.85 V IF = 5 mA
Turn On Time TON 100 295 s IF = 5 mA, CL = 1 nF
Turn On Time TON 50 140 s IF = 10 mA, CL = 1 nF
Turn Off Time TOFF 28 45 s IF = 5 mA, CL = 1 nF
Turn Off Time TOFF 23 40 s IF = 10 mA, CL = 1 nF
Input-Output Momentary Withstand Voltage VISO 5000 VRMS RH 50%, t = 1 minute; TA = 25C UL 1577
External Air Gap (Clearance) L(101) 8 mm
External Tracking (Creepage) L(102) 8 mm
Maximum Working Insulation Voltage VIORM 1140 VPEAK IEC/EN/DIN EN 60747-5-5
Input Current (ON) IF(ON) 5 10 mA
Input Voltage (OFF) VF(OFF) 0 0.8 V

Applications

  • Solid state relay module
  • Inrush current prevention
  • Insulation resistance measurement in battery systems, solar PV inverters, EV charging systems, and motor winding insulation.

2411221123_Broadcom-ACPL-K308U-500E_C17484739.pdf

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