ISLT1007 Optoisolator Equivalent & Substitute Parts

Part Overview

The ISLT1007 is a 4-pin surface mount optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation up to 5000Vrms with a single channel configuration and DC input capability. The part is currently active in production with 770 units in stock. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific packaging preferences while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Isolation Voltage	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA
Output Type	Transistor
Maximum Output Voltage	80V
Maximum Output Current	50mA per channel
Vce Saturation (Max)	300mV
Operating Temperature Range	-55°C to 110°C
Mounting Type	Surface Mount
Package Type	4-SMD, Gull Wing
Input Type	DC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ISLT1007 are qualified based on the following critical parameters that determine functional equivalence:

Isolation voltage rating of 5000Vrms
Single channel configuration
Transistor output topology
DC input type
Current transfer ratio range of 80% to 160% @ 5mA
Maximum output voltage of 80V
Maximum output current of 50mA per channel
Vce saturation maximum of 300mV
Operating temperature range of -55°C to 110°C
Surface mount configuration with 4-pin package
ROHS3 compliance and MSL 1 rating

The identified substitutes (APC-1017 and EL1017(TA)-VG) meet all these electrical and mechanical requirements. Variations in package designations (4-LSOP, 4-SOP) and minor timing specifications do not affect functional equivalence in standard applications.

Parameter Comparison

Parameter	ISLT1007	APC-1017	EL1017(TA)-VG
Manufacturer	Isocom Components 2004 LTD	American Bright Optoelectronics Corporation	Everlight Electronics Co Ltd
Isolation Voltage	5000Vrms	5000Vrms	5000Vrms
Number of Channels	1	1	1
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA	160% @ 5mA	160% @ 5mA
Output Type	Transistor	Transistor	Transistor
Maximum Output Voltage	80V	80V	80V
Maximum Output Current	50mA	50mA	50mA
Vce Saturation (Max)	300mV	300mV	300mV
Forward Voltage (Typ)	1.45V	1.45V	1.45V
Maximum DC Forward Current	60mA	60mA	60mA
Operating Temperature Range	-55°C to 110°C	-55°C to 110°C	-55°C to 110°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Supplier Device Package	4-SMD	4-LSOP	4-SOP (2.54mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three optoisolator parts (ISLT1007, APC-1017, and EL1017(TA)-VG) are active products with ROHS3 compliance and MSL 1 ratings, indicating equivalent environmental and regulatory qualification. Selection between these parts should be based on:

Availability and lead time requirements. The EL1017(TA)-VG offers the highest inventory level at 190,400 units, followed by APC-1017 at 3,779 units, and ISLT1007 at 770 units.

Package footprint compatibility. While all parts use 4-pin surface mount configurations with gull wing leads, the specific package designations (4-SMD, 4-LSOP, 4-SOP) may require verification against PCB layout and assembly equipment specifications.

Timing performance. The ISLT1007 and EL1017(TA)-VG specify identical turn-on/turn-off times (4µs, 3µs) and rise/fall times (2µs, 3µs). The APC-1017 does not specify turn-on/turn-off times but lists rise/fall times of 6µs and 8µs, which remain within acceptable ranges for most DC input applications.

Supplier continuity and regional availability. Multiple manufacturers ensure supply chain resilience and reduce single-source dependency.

Frequently Asked Questions (FAQ)

Q: Can APC-1017 be used as a direct replacement for ISLT1007?

A: Yes. The APC-1017 meets all critical electrical parameters including isolation voltage, current transfer ratio, output voltage and current ratings, and operating temperature range. Package compatibility should be verified for your specific PCB layout, as the supplier device package is designated as 4-LSOP rather than 4-SMD.

Q: What is the difference between the package designations 4-SMD, 4-LSOP, and 4-SOP?

A: These designations refer to variations in the physical package outline and lead configuration. All three are surface mount 4-pin packages with gull wing leads suitable for automated assembly. Specific footprint dimensions should be confirmed against your PCB design files and assembly equipment capabilities.

Q: Are there differences in switching speed between these parts?

A: The ISLT1007 and EL1017(TA)-VG specify identical switching characteristics (4µs turn-on, 3µs turn-off, 2µs rise time, 3µs fall time). The APC-1017 does not specify turn-on/turn-off times but lists slower rise/fall times (6µs, 8µs). For DC input applications, these timing differences are not functionally significant.

Q: Which part should I select for new designs?

A: Selection should prioritize active product status (all three qualify), ROHS3 compliance (all three comply), and availability. The EL1017(TA)-VG offers the highest inventory level and identical electrical performance to the ISLT1007, making it suitable for volume production. Verify package footprint compatibility with your PCB design before finalizing selection.

Q: Are all three parts REACH compliant?

A: The ISLT1007 and EL1017(TA)-VG are explicitly marked as REACH Unaffected. The APC-1017 REACH status is not specified in the provided data and should be confirmed with the supplier before use in applications subject to REACH regulations.

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