IL2 Optoisolator Transistor with Base - Equivalent & Substitute Parts

Part Overview

The IL2 is a 6-DIP optoisolator with transistor output and base connection, rated for 5300Vrms isolation voltage. Manufactured by Vishay Semiconductor Opto Division, this component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The IL2 provides single-channel isolation with 1 channel configuration, suitable for applications requiring galvanic isolation in DC input circuits with transistor-based output control.

Key Parameters

Parameter	Value
Manufacturer Part Number	IL2
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Package / Case	6-DIP (0.300", 7.62mm)
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	100% @ 10mA
Current Transfer Ratio (Max)	500% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	70V
Current - Output / Channel	50mA
Operating Temperature	-40°C ~ 100°C
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the IL2 optoisolator is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Package / Case: 6-DIP (0.300", 7.62mm) - pinout compatibility
Number of Channels: 1 channel
Output Type: Transistor with Base
Voltage - Output (Max): 70V
Mounting Type: Through Hole
Input Type: DC

Acceptable Variation Parameters:

Voltage - Isolation: 5000Vrms to 5300Vrms (both exceed IL2 minimum requirement)
Current Transfer Ratio: Ranges from 40% to 320% @ 10mA (functional equivalence depends on circuit design)
Operating Temperature: Extended ranges acceptable (-55°C to 100°C covers IL2 range)
Current - Output / Channel: 50mA to 150mA (IL2 requires minimum 50mA)
Vce Saturation: 250mV to 400mV (within acceptable switching performance)

Substitute parts are grouped by Current Transfer Ratio classification to facilitate selection based on circuit requirements. All listed substitutes maintain 6-DIP package compatibility and transistor-with-base output configuration.

Parameter Comparison

Part Number	Manufacturer	Voltage - Isolation	CTR Min @ 10mA	CTR Max @ 10mA	Output (Max)	Current / Channel	Vce Sat (Max)	Temp Range	Status
IL2	Vishay Semiconductor Opto Division	5300Vrms	100%	500%	70V	50mA	250mV	-40°C ~ 100°C	Obsolete
SFH600-1	Vishay Semiconductor Opto Division	5300Vrms	63%	125%	70V	50mA	400mV	-55°C ~ 100°C	Last Time Buy
SFH600-2	Vishay Semiconductor Opto Division	5300Vrms	100%	200%	70V	50mA	400mV	-55°C ~ 100°C	Last Time Buy
SFH600-3	Vishay Semiconductor Opto Division	5300Vrms	160%	320%	70V	50mA	400mV	-55°C ~ 100°C	Last Time Buy
CNY17-1	Lite-On Inc.	5000Vrms	40%	80%	70V	150mA	300mV	-55°C ~ 100°C	Active
CNY17-1X	Isocom Components 2004 LTD	5300Vrms	40%	80%	70V	50mA	400mV	-55°C ~ 100°C	Active
CNY17-2	Lite-On Inc.	5000Vrms	63%	125%	70V	150mA	300mV	-55°C ~ 100°C	Active
CNY17-2X	Isocom Components 2004 LTD	5300Vrms	63%	125%	70V	50mA	400mV	-55°C ~ 100°C	Active
CNY17-3	Quality Technologies	Not specified	Not specified	100%	70V	Not specified	Not specified	Not specified	Active
CNY17-3-000E	Broadcom Limited	5000Vrms	100%	200%	70V	150mA	300mV	-55°C ~ 100°C	Active
CNY17-3X	Isocom Components 2004 LTD	5300Vrms	100%	200%	70V	50mA	400mV	-55°C ~ 100°C	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement: SFH600-2 and CNY17-3X are the closest functional equivalents to IL2. Both maintain 5300Vrms isolation voltage, 100% minimum Current Transfer Ratio @ 10mA, 70V maximum output voltage, and 6-DIP package compatibility. SFH600-2 is manufactured by Vishay (original IL2 manufacturer) and carries Last Time Buy status. CNY17-3X is manufactured by Isocom Components and maintains Active product status, providing longer-term availability.

Secondary Options - Active Status: CNY17-1X, CNY17-2X, and CNY17-3X are all Active products from Isocom Components with 5300Vrms isolation matching IL2 specifications. These parts offer extended operating temperature range (-55°C to 100°C) compared to IL2 (-40°C to 100°C). Selection among these three depends on Current Transfer Ratio requirements: CNY17-1X (40-80%), CNY17-2X (63-125%), or CNY17-3X (100-200%).

Compliance Considerations: All recommended substitutes are ROHS3 compliant and REACH unaffected, matching IL2 environmental compliance status. Moisture Sensitivity Level 1 (Unlimited) is consistent across all parts, eliminating moisture handling concerns during substitution.

Availability Note: CNY17-3-000E (Broadcom Limited) and CNY17-1, CNY17-2 (Lite-On Inc.) offer higher current output capability (150mA vs. 50mA) but operate at 5000Vrms isolation, which is acceptable for applications not requiring the full 5300Vrms specification.

Frequently Asked Questions (FAQ)

Q: Can I directly replace IL2 with SFH600-1? A: SFH600-1 is mechanically compatible (6-DIP package) but has lower Current Transfer Ratio (63-125% vs. IL2's 100-500%). Use only if your circuit design accommodates the reduced CTR range. Vce Saturation is higher (400mV vs. 250mV), affecting switching speed.

Q: What is the difference between CNY17-1X, CNY17-2X, and CNY17-3X? A: These three Isocom parts differ only in Current Transfer Ratio specification: CNY17-1X (40-80%), CNY17-2X (63-125%), CNY17-3X (100-200%). All maintain identical 5300Vrms isolation, 70V output, 50mA current, and -55°C to 100°C temperature range. Select based on your circuit's CTR requirement.

Q: Why do some substitutes have 150mA output current while IL2 has 50mA? A: CNY17-1, CNY17-2, and CNY17-3-000E are rated for higher output current (150mA) due to different internal transistor design. This is not a limitation for IL2 replacement; circuits designed for 50mA operation remain fully compatible.

Q: Is 5000Vrms isolation acceptable as a substitute for IL2's 5300Vrms? A: Yes. Circuits designed for 5300Vrms isolation will operate safely with 5000Vrms-rated parts, as the actual isolation requirement is met. However, if your application specifically requires 5300Vrms margin, select SFH600 series or CNY17-X variants (Isocom).

Q: What is the difference between Lite-On CNY17 and Isocom CNY17-X parts? A: Lite-On CNY17 parts (CNY17-1, CNY17-2, CNY17-3-000E) operate at 5000Vrms isolation and support 150mA output current. Isocom CNY17-X parts (CNY17-1X, CNY17-2X, CNY17-3X) operate at 5300Vrms isolation and support 50mA output current, matching IL2 specifications more closely.

Q: Can I use CNY17-3 as a substitute? A: CNY17-3 is mechanically compatible (6-DIP package) but has incomplete specification data in available documentation. Use only if full datasheet confirms 5300Vrms isolation, 70V output, and 50mA current capability. Recommend CNY17-3X or SFH600-2 for documented specifications.

Q: Does operating temperature range affect substitution compatibility? A: IL2 operates -40°C to 100°C. All recommended substitutes extend this to -55°C to 100°C, providing superior low-temperature performance. This is a beneficial change with no negative impact on IL2 replacement applications.

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