EL816(C)-V Optoisolator Equivalent & Substitute Parts

Part Overview

The EL816(C)-V is an active optoisolator manufactured by Everlight Electronics Co Ltd, featuring transistor output with 5000Vrms isolation voltage in a 4-DIP through-hole package. This component is classified as Active and maintains full production status. Substitute parts are identified when equivalent electrical performance, isolation rating, package compatibility, and operational parameters align with application requirements. Alternative models become necessary when addressing supply chain constraints, specific packaging preferences (surface mount versus through-hole), or performance specification variations within acceptable tolerance ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Isolation	5000	Vrms
Number of Channels	1	—
Output Type	Transistor	—
Voltage - Output (Max)	80	V
Current - Output / Channel	50	mA
Current Transfer Ratio (Min)	200	% @ 5mA
Current Transfer Ratio (Max)	400	% @ 5mA
Operating Temperature Range	-55 to 110	°C
Package / Case	4-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute optoisolators for the EL816(C)-V are qualified based on the following criteria:

Primary Compatibility Parameters:

Isolation voltage rating of 5000Vrms or higher
Single-channel transistor output configuration
Maximum output voltage of 80V or greater
Output current capacity of 50mA or greater
Operating temperature range encompassing -55°C to 110°C
4-DIP package footprint (0.300", 7.62mm) for through-hole mounting
DC input type
RoHS3 compliance or equivalent environmental certification

Secondary Performance Considerations:

Current Transfer Ratio (CTR) specifications within acceptable operational bands
Rise and fall time characteristics suitable for switching applications
Vce saturation voltage within specified limits
Forward voltage (Vf) and maximum forward current (If) ratings for LED input stage

Substitutes are grouped by mounting technology: through-hole DIP variants maintain direct pin-compatible replacement capability, while surface-mount variants require PCB redesign but offer equivalent electrical performance.

Parameter Comparison

Parameter	EL816(C)-V	TLP785(F)	TLP785(GR-TP6,F)	TLP785(Y,F)	VO618A-3
Manufacturer	Everlight Electronics	Toshiba Semiconductor	Toshiba Semiconductor	Toshiba Semiconductor	Vishay Semiconductor Opto
Voltage - Isolation	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms	5300 Vrms
Number of Channels	1	1	1	1	1
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80 V	80 V	80 V	80 V	80 V
Current - Output / Channel	50 mA	50 mA	50 mA	50 mA	50 mA
CTR Min @ 5mA	200%	50%	100%	50%	100% @ 1mA
CTR Max @ 5mA	400%	600%	300%	150%	200% @ 1mA
Rise / Fall Time (Typ)	4µs, 3µs	2µs, 3µs	2µs, 3µs	2µs, 3µs	2µs, 2µs
Vce Saturation (Max)	200 mV	400 mV	400 mV	400 mV	400 mV
Voltage - Forward (Vf) (Typ)	1.2 V	1.15 V	1.15 V	1.15 V	1.1 V
Current - DC Forward (If) (Max)	60 mA	60 mA	60 mA	60 mA	60 mA
Operating Temperature	-55 to 110°C	-55 to 110°C	-55 to 110°C	-55 to 110°C	-55 to 110°C
Package / Case	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-SMD, Gull Wing	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Surface Mount	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant
Packaging Format	—	Tube	Tape & Reel (TR)	Tube	Tube

Engineering Selection Recommendations

Through-Hole DIP Substitutes (Direct Pin-Compatible Replacement):

TLP785(F), TLP785(Y,F), and VO618A-3 maintain identical 4-DIP through-hole package geometry and are suitable for direct PCB substitution without layout modification. All three alternatives are Active products with current production status and RoHS compliance certifications.

TLP785(F) provides the broadest CTR range (50% to 600% @ 5mA) and fastest switching characteristics (2µs rise time), supporting applications requiring high-speed signal isolation. Vce saturation of 400mV represents a 200mV increase relative to EL816(C)-V specifications.

TLP785(Y,F) offers the most conservative CTR specification (50% to 150% @ 5mA) and is suitable for applications with tighter input current budgets. This variant maintains identical thermal and isolation performance within the specified operating range.

VO618A-3 provides the highest isolation voltage rating (5300Vrms) and fastest fall time (2µs), with CTR specifications (100% to 200% @ 1mA) evaluated at lower input current. Forward voltage is 0.1V lower than the main part, reducing input LED power dissipation.

Surface-Mount Substitute (PCB Redesign Required):

TLP785(GR-TP6,F) is supplied in 4-SMD gull-wing package with tape and reel packaging format. This variant requires PCB footprint redesign but offers identical electrical isolation and output specifications. CTR range of 100% to 300% @ 5mA provides mid-range performance characteristics. Highest inventory availability (13,874 pcs) supports high-volume production requirements.

Compliance and Certification:

All substitute parts maintain ROHS3 or equivalent RoHS compliance status. EL816(C)-V and VO618A-3 carry explicit ROHS3 designation. TLP785 variants carry RoHS Compliant certification. All parts are classified under ECCN EAR99 and HTSUS 8541.49.8000 for regulatory and tariff purposes. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all alternatives, indicating no moisture-related handling restrictions.

Frequently Asked Questions (FAQ)

Q: Can TLP785(GR-TP6,F) replace EL816(C)-V on existing PCBs without modification?

A: No. TLP785(GR-TP6,F) uses 4-SMD surface-mount package geometry, while EL816(C)-V uses 4-DIP through-hole package. PCB footprint and mounting technology differ fundamentally. Direct substitution requires PCB redesign and reflow soldering process implementation. Through-hole alternatives (TLP785(F), TLP785(Y,F), VO618A-3) maintain identical pin spacing and mounting method.

Q: What is the significance of Current Transfer Ratio (CTR) differences between EL816(C)-V and substitute parts?

A: CTR defines the ratio of output collector current to input LED forward current, expressed as a percentage. EL816(C)-V specifies 200% to 400% CTR @ 5mA input current. TLP785(F) ranges from 50% to 600%, offering wider performance distribution. TLP785(Y,F) ranges from 50% to 150%, representing narrower specification. VO618A-3 specifies 100% to 200% @ 1mA (lower input current reference). Circuit designs must account for CTR variation to ensure proper output current delivery across component tolerance bands. Higher CTR values reduce required input current for equivalent output performance.

Q: Are all substitute parts suitable for high-temperature applications?

A: Yes. All substitute parts and the main part EL816(C)-V specify identical operating temperature range of -55°C to 110°C. Thermal performance is equivalent across all alternatives within this range. Application-specific thermal management considerations (PCB copper area, heat sinking, ambient conditions) remain independent of component selection.

Q: What packaging format differences exist among substitute parts?

A: EL816(C)-V is supplied in standard tube packaging (quantity per tube not specified in provided data). TLP785(F) and TLP785(Y,F) are supplied in tube format. TLP785(GR-TP6,F) is supplied in tape and reel (TR) format, standard for surface-mount component high-volume production. VO618A-3 is supplied in tube format. Tape and reel format reduces component handling labor and enables automated pick-and-place assembly for surface-mount applications.

Q: How do Vce saturation voltage differences affect circuit design?

A: EL816(C)-V specifies maximum Vce saturation of 200mV. All substitute parts specify 400mV maximum. Vce saturation represents the minimum voltage drop across the transistor output in fully saturated (on) state. Higher saturation voltage increases power dissipation in the output transistor and reduces available output voltage swing. Applications with tight output voltage margins or high output current requirements must account for this 200mV difference in circuit analysis.

Q: Is VO618A-3 compatible with circuits designed for EL816(C)-V?

A: VO618A-3 maintains identical package, isolation voltage (5300Vrms exceeds 5000Vrms requirement), output voltage (80V), and output current (50mA) specifications. Operating temperature range is identical. Primary differences are CTR specification (100% to 200% @ 1mA versus 200% to 400% @ 5mA) and slightly lower forward voltage (1.1V versus 1.2V). Circuits must verify that CTR specification at the actual input current used in the application provides sufficient output current. Lower forward voltage reduces input LED power dissipation, potentially improving overall system efficiency.

Q: What is the practical difference between TLP785(F) and TLP785(Y,F)?

A: Both are Toshiba TLP785 base products in 4-DIP through-hole package with identical isolation voltage, output specifications, and thermal range. TLP785(F) specifies CTR of 50% to 600% @ 5mA with faster switching (2µs rise time). TLP785(Y,F) specifies narrower CTR of 50% to 150% @ 5mA. TLP785(Y,F) is suitable for applications where input current is limited and predictable output current is required within the narrower CTR band. TLP785(F) accommodates wider component tolerance variation and higher-speed switching requirements. Inventory availability differs: TLP785(F) has 2,332 pcs versus TLP785(Y,F) with 966 pcs.

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