ILQ1-X009 Equivalent & Substitute Parts

Part Overview

The ILQ1-X009 is a 4-channel optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation voltage and is designed for high-voltage signal coupling applications. The part is currently in Last Time Buy status, making identification of equivalent and substitute parts essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	ILQ1-X009
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Number of Channels	4
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	20% @ 10mA
Current Transfer Ratio (Max)	300% @ 10mA
Output Type	Transistor
Voltage - Output (Max)	50V
Current - Output / Channel	50mA
Operating Temperature	-40°C ~ 100°C
Package / Case	16-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Product Status	Last Time Buy

Substitute Part Grouping Explanation

Substitution for the ILQ1-X009 is determined by the following critical parameters:

Isolation Voltage: 5300Vrms (all substitutes match this specification)
Output Type: Transistor output configuration
Package Type: 16-SMD, Gull Wing surface mount
Current Transfer Ratio Range: 20% to 300% @ 10mA
Maximum Output Voltage: 50V
Maximum Output Current per Channel: 50mA
Input Type: DC
RoHS Compliance: ROHS3 Compliant

The ILQ1-X009 is a 4-channel device. Substitute parts from Isocom Components (ILQ1SM, ILQ1SMT&R, ILQ1XSM, ILQ1XSMT&R) are single-channel equivalents that maintain identical electrical isolation, output characteristics, and package specifications. The parametric equivalent ILQ1-X007 from Vishay is a direct 4-channel match with identical specifications.

Parameter Comparison

Parameter	ILQ1-X009	ILQ1-X007	ILQ1SM	ILQ1SMT&R	ILQ1XSM	ILQ1XSMT&R
Manufacturer	Vishay	Vishay	Isocom	Isocom	Isocom	Isocom
Number of Channels	4	4	1	1	1	1
Voltage - Isolation	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA	20% @ 10mA
Current Transfer Ratio (Max)	300% @ 10mA	300% @ 10mA	300% @ 10mA	300% @ 10mA	300% @ 10mA	300% @ 10mA
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	50V	50V	50V	50V	50V	50V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.25V	1.25V	1.2V	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	60mA	60mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	400mV	400mV
Operating Temperature	-40°C ~ 100°C	-40°C ~ 100°C	-25°C ~ 100°C	-25°C ~ 100°C	-25°C ~ 100°C	-25°C ~ 100°C
Package / Case	16-SMD, Gull Wing	16-SMD, Gull Wing	16-SMD, Gull Wing	16-SMD, Gull Wing	16-SMD, Gull Wing	16-SMD, Gull Wing
Packaging Type	Tube	Tube	Tube	Tape & Reel	Tube	Tape & Reel
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Last Time Buy	Active	Active	Active	Active

Engineering Selection Recommendations

ILQ1-X007 is the primary parametric equivalent for direct replacement. This Vishay part maintains identical electrical specifications and 4-channel configuration. Both parts are Last Time Buy status, requiring equivalent long-term sourcing strategy.

ILQ1SM, ILQ1SMT&R, ILQ1XSM, ILQ1XSMT&R from Isocom Components are manufacturer-recommended alternatives with Active product status. These single-channel devices require circuit redesign for 4-channel applications but provide long-term availability. All Isocom variants maintain the same isolation voltage, output characteristics, and package footprint. Selection between tube and tape & reel packaging depends on production volume and assembly requirements.

All substitute parts maintain ROHS3 compliance and are suitable for equivalent electrical performance in high-voltage isolation applications.

Frequently Asked Questions (FAQ)

Q: Can ILQ1SM replace ILQ1-X009 directly? A: ILQ1SM is electrically equivalent but is a single-channel device versus the 4-channel ILQ1-X009. Direct pin-for-pin replacement is not possible. Circuit redesign is required to use four individual single-channel devices in place of one 4-channel device.

Q: What is the difference between tube and tape & Reel packaging? A: Tube packaging (ILQ1SM, ILQ1XSM) is suitable for lower-volume production and manual assembly. Tape & Reel packaging (ILQ1SMT&R, ILQ1XSMT&R) is designed for automated pick-and-place assembly and higher production volumes. Electrical specifications are identical.

Q: Are there temperature range differences between substitutes? A: ILQ1-X009 and ILQ1-X007 operate from -40°C to 100°C. Isocom variants (ILQ1SM, ILQ1SMT&R, ILQ1XSM, ILQ1XSMT&R) operate from -25°C to 100°C. Applications requiring -40°C operation must use Vishay parts.

Q: What is the difference between ILQ1XSM and ILQ1SM? A: Both are single-channel optoisolators with identical electrical specifications. The primary difference is packaging: ILQ1XSM is supplied in tubes, while ILQ1SMT&R is supplied in tape & reel format. ILQ1SM is also tube-packaged.

Q: Why is ILQ1-X009 Last Time Buy? A: Last Time Buy status indicates the manufacturer is discontinuing this product. Isocom Components alternatives with Active status provide long-term availability for new designs or future production runs.

Q: Are all substitutes RoHS compliant? A: Yes. ILQ1-X009, ILQ1-X007, and all Isocom variants (ILQ1SM, ILQ1SMT&R, ILQ1XSM, ILQ1XSMT&R) are ROHS3 compliant.

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