IL216AT Optoisolator Equivalent & Substitute Parts

Part Overview

The IL216AT is a 4000Vrms optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This single-channel device in 8-SOIC surface mount package is designed for high-voltage isolation applications requiring robust galvanic separation. The part is currently active in production with 1460 units in stock. Substitute parts are necessary when the IL216AT becomes unavailable, when alternative packaging formats are required, or when application requirements permit operation at lower isolation voltage ratings while maintaining functional compatibility.

Key Parameters

Parameter	IL216AT
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	4000Vrms
Current Transfer Ratio (Min)	50% @ 1mA
Output Type	Transistor with Base
Voltage - Output (Max)	30V
Voltage - Forward (Vf) (Typ)	1V
Current - DC Forward (If) (Max)	60 mA
Vce Saturation (Max)	400mV
Turn On / Turn Off Time (Typ)	3µs, 3µs
Operating Temperature	-55°C ~ 100°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the IL216AT are grouped based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Package / Case: 8-SOIC (0.154", 3.90mm Width) — mechanical and electrical footprint compatibility
Output Type: Transistor with Base — functional output configuration
Voltage - Output (Max): 30V — maximum output voltage rating
Vce Saturation (Max): 400mV — saturation voltage specification
Input Type: DC — input signal type
Mounting Type: Surface Mount — assembly compatibility

Secondary Consideration:

Voltage - Isolation: The IL216AT operates at 4000Vrms. Substitute parts rated at 2500Vrms represent a lower isolation voltage specification. These substitutes are functionally compatible in applications where the lower isolation rating meets system requirements.

All substitute parts listed maintain identical package geometry, output transistor configuration, maximum output voltage, and saturation voltage specifications. Differences in Current Transfer Ratio, turn-on/turn-off times, and operating temperature ranges are secondary parameters that do not prevent substitution but require application-level verification.

Parameter Comparison

Parameter	IL216AT	MOC205M	MOC205R2M	MOC205R2VM	MOC206R2M	MOC207M	MOC207R2M	MOC207R2VM	MOC207VM	MOC211M
Manufacturer	Vishay	Fairchild	onsemi	onsemi	Fairchild	onsemi	onsemi	onsemi	onsemi	Fairchild
Number of Channels	1	1	1	1	1	1	1	1	1	1
Voltage - Isolation	4000Vrms	2500Vrms	2500Vrms	2500Vrms	2500Vrms	2500Vrms	2500Vrms	2500Vrms	2500Vrms	2500Vrms
Current Transfer Ratio (Min)	50% @ 1mA	40% @ 10mA	40% @ 10mA	40% @ 10mA	63% @ 10mA	100% @ 10mA	100% @ 10mA	100% @ 10mA	100% @ 10mA	20% @ 10mA
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V
Current - Output / Channel	—	150mA	150mA	150mA	150mA	150mA	150mA	150mA	150mA	150mA
Voltage - Forward (Vf) (Typ)	1V	1.15V	1.15V	1.15V	1.15V	1.15V	1.15V	1.15V	1.15V	1.15V
Current - DC Forward (If) (Max)	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV
Turn On / Turn Off Time (Typ)	3µs, 3µs	7.5µs, 5.7µs	7.5µs, 5.7µs	7.5µs, 5.7µs	7.5µs, 5.7µs	7.5µs, 5.7µs	7.5µs, 5.7µs	7.5µs, 5.7µs	7.5µs, 5.7µs	7.5µs, 5.7µs
Operating Temperature	-55°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

All listed substitute parts maintain identical 8-SOIC package geometry and transistor-with-base output configuration, ensuring direct PCB footprint compatibility with the IL216AT.

Isolation Voltage Consideration: The IL216AT operates at 4000Vrms isolation. All substitute parts operate at 2500Vrms. Selection of a 2500Vrms substitute is permissible only when the application system design does not require the higher 4000Vrms isolation specification. Applications with isolation requirements exceeding 2500Vrms must retain the IL216AT or identify alternative parts with equivalent 4000Vrms ratings.

RoHS Compliance: MOC205R2M, MOC205R2VM, MOC207M, MOC207R2M, MOC207R2VM, and MOC207VM are ROHS3 compliant. MOC205M, MOC206R2M, and MOC211M do not list RoHS compliance status in provided specifications. Applications requiring RoHS3 compliance should prioritize parts with documented ROHS3 status.

Product Status: All parts listed are active in production. Inventory availability varies from 1266 units (MOC207VM) to 180000 units (MOC205R2VM).

Packaging Format Options: Substitute parts are available in multiple packaging formats: Bulk (MOC205M, MOC206R2M, MOC211M), Cut Tape & Digi-Reel (MOC205R2M, MOC207R2M), Tape & Reel (MOC205R2VM, MOC207R2VM), Box (MOC207M), and Tube (MOC207VM). Selection depends on procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Can MOC205R2M directly replace IL216AT on the PCB? A: Yes. Both parts use identical 8-SOIC package geometry with 0.154" width and 3.90mm spacing. PCB footprint compatibility is confirmed. However, the MOC205R2M operates at 2500Vrms isolation versus the IL216AT's 4000Vrms. Substitution is valid only if your application does not require 4000Vrms isolation.

Q: What is the difference between MOC207R2M and MOC207R2VM? A: Both parts are electrically identical with 2500Vrms isolation, 100-200% current transfer ratio, and identical timing specifications. The difference is packaging format: MOC207R2M is supplied in Cut Tape & Digi-Reel format (32100 units in stock), while MOC207R2VM is supplied in Tape & Reel format (3524 units in stock). Select based on your assembly process requirements.

Q: Why does IL216AT have faster switching times (3µs) compared to substitute parts (7.5µs turn-on)? A: The IL216AT and substitute parts have different internal designs resulting in different switching characteristics. The IL216AT's 3µs turn-on and turn-off times are faster than the 7.5µs turn-on time of MOC205 and MOC207 series. Applications requiring the faster 3µs switching performance of the IL216AT cannot use these substitutes.

Q: Is MOC211M suitable as a substitute? A: MOC211M maintains the same 8-SOIC package, 2500Vrms isolation, and transistor-with-base output. However, its minimum current transfer ratio is 20% @ 10mA, significantly lower than the IL216AT's 50% @ 1mA. This lower transfer ratio may affect circuit performance. Substitution requires circuit-level analysis to confirm adequate drive capability.

Q: What does "Current Transfer Ratio (Min)" mean for substitution? A: Current Transfer Ratio (CTR) defines the ratio of output collector current to input LED current. A higher CTR indicates more efficient signal transfer. The IL216AT guarantees 50% CTR at 1mA input. Substitute parts with lower CTR values (such as MOC205 at 40% @ 10mA) require higher input current to achieve equivalent output current, potentially affecting circuit design.

Q: Can I use MOC205M if I need RoHS3 compliance? A: MOC205M does not list RoHS3 compliance status in the provided specifications. For applications requiring documented RoHS3 compliance, use MOC205R2M, MOC205R2VM, MOC207M, MOC207R2M, MOC207R2VM, or MOC207VM instead.

Q: What is the operating temperature range difference? A: The IL216AT operates from -55°C to 100°C. All substitute parts operate from -40°C to 100°C. Applications requiring operation below -40°C must use the IL216AT or identify alternative parts with equivalent extended low-temperature specifications.

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