ISLT1008 Equivalent & Substitute Parts

Part Overview

The ISLT1008 is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation up to 5000Vrms with a single channel configuration in a 4-SMD surface mount package. The device is classified as Active status and is suitable for applications requiring DC input isolation with transistor-based output switching.

Substitute parts are identified when components share identical or equivalent electrical characteristics and mechanical compatibility within the optoisolator category, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	Value
Manufacturer Part Number	ISLT1008
Manufacturer	Isocom Components 2004 LTD
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	130% @ 5mA
Current Transfer Ratio (Max)	260% @ 5mA
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Operating Temperature	-55°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

The APC-1018 qualifies as a parametric equivalent to the ISLT1008 based on the following critical substitution criteria:

Electrical Equivalence Parameters:

Voltage isolation rating: 5000Vrms (identical)
Current transfer ratio range: 130% to 260% @ 5mA (identical)
Output type: Transistor (identical)
Maximum output voltage: 80V (identical)
Output current per channel: 50mA (identical)
Forward voltage (Vf): 1.45V (identical)
Maximum forward current: 60mA (identical)
Vce saturation: 300mV (identical)
Operating temperature range: -55°C ~ 110°C (identical)
Input type: DC (identical)

Mechanical Compatibility Parameters:

Mounting type: Surface Mount (identical)
Package configuration: 4-SMD, Gull Wing (identical)
Number of channels: 1 (identical)

Compliance Parameters:

RoHS3 Compliant (identical)
Moisture Sensitivity Level: 1 (Unlimited) (identical)
ECCN: EAR99 (identical)
HTSUS: 8541.49.8000 (identical)

Both components are Active status products, confirming ongoing availability and support.

Parameter Comparison

Parameter	ISLT1008	APC-1018	Match Status
Manufacturer Part Number	ISLT1008	APC-1018	Different
Manufacturer	Isocom Components 2004 LTD	American Bright Optoelectronics Corporation	Different
Number of Channels	1	1	Equivalent
Voltage - Isolation	5000Vrms	5000Vrms	Equivalent
Current Transfer Ratio (Min)	130% @ 5mA	130% @ 5mA	Equivalent
Current Transfer Ratio (Max)	260% @ 5mA	260% @ 5mA	Equivalent
Turn On / Turn Off Time (Typ)	4µs, 3µs	Not specified	Data unavailable
Rise / Fall Time (Typ)	2µs, 3µs	6µs, 8µs	Different
Output Type	Transistor	Transistor	Equivalent
Voltage - Output (Max)	80V	80V	Equivalent
Current - Output / Channel	50mA	50mA	Equivalent
Voltage - Forward (Vf) (Typ)	1.45V	1.45V	Equivalent
Current - DC Forward (If) (Max)	60mA	60mA	Equivalent
Vce Saturation (Max)	300mV	300mV	Equivalent
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Active	Active	Equivalent

Engineering Selection Recommendations

Both the ISLT1008 and APC-1018 are Active status products with ROHS3 compliance and identical isolation voltage, current transfer ratios, output ratings, and operating temperature ranges. The components are mechanically compatible with identical 4-SMD Gull Wing packaging for surface mount applications.

The APC-1018 exhibits slower rise and fall times (6µs, 8µs) compared to the ISLT1008 (2µs, 3µs). This difference is relevant only in applications with timing-critical switching requirements. For applications where switching speed is not a limiting factor, the APC-1018 provides equivalent functional performance.

Both components maintain identical electrical specifications for isolation voltage, current transfer ratio, output voltage and current limits, saturation voltage, and forward voltage characteristics. Selection between these parts should be based on availability, lead time, and application-specific timing requirements.

Frequently Asked Questions (FAQ)

Q: Can the APC-1018 directly replace the ISLT1008 in all applications?

A: The APC-1018 is electrically and mechanically equivalent to the ISLT1008 for isolation voltage, current transfer ratio, output ratings, and operating temperature. However, the APC-1018 has slower rise and fall times (6µs, 8µs versus 2µs, 3µs). Direct replacement is suitable for applications where switching speed is not a critical design parameter.

Q: Are the package dimensions identical between ISLT1008 and APC-1018?

A: Both components use 4-SMD Gull Wing surface mount packaging. The supplier device packages differ (4-SMD for ISLT1008 and 4-LSOP for APC-1018), but both are compatible with standard surface mount assembly processes for 4-pin configurations.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching isolation voltage (5000Vrms), current transfer ratio range (130-260% @ 5mA), output type (transistor), maximum output voltage (80V), output current (50mA), operating temperature range (-55°C to 110°C), and surface mount package configuration (4-SMD Gull Wing).

Q: Are both parts RoHS compliant?

A: Both the ISLT1008 and APC-1018 are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications.

Q: What is the difference in rise and fall times between these parts?

A: The ISLT1008 has rise and fall times of 2µs and 3µs respectively, while the APC-1018 has rise and fall times of 6µs and 8µs. This difference affects switching speed in time-sensitive applications but does not impact the core isolation and output characteristics.

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