EL816(S1)(C)(TB)-V Optoisolator Equivalent & Substitute Parts

Part Overview

The EL816(S1)(C)(TB)-V is a 5000Vrms isolation optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component is classified as discontinued at DiGi Electronics, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications. The part functions as a single-channel optoisolator suitable for DC input applications requiring high-voltage isolation in 4-SMD surface mount packages.

Key Parameters

Parameter	Value
Manufacturer	Everlight Electronics Co Ltd
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	200% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA
Rise / Fall Time (Typ)	4µs, 3µs
Input Type	DC
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	60mA
Vce Saturation (Max)	200mV
Operating Temperature	-55°C ~ 110°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the EL816(S1)(C)(TB)-V is determined by strict equivalence across the following critical parameters:

Isolation Voltage: 5000Vrms (mandatory match)

Channel Configuration: Single channel (mandatory match)

Output Stage: Transistor output (mandatory match)

Current Transfer Ratio: 200% minimum and 400% maximum @ 5mA (mandatory match)

Output Specifications: 80V maximum output voltage and 50mA maximum output current per channel (mandatory match)

Input Type: DC input (mandatory match)

Package Configuration: 4-SMD, Gull Wing surface mount (mandatory match)

Compliance: ROHS3 compliant with MSL 1 rating (mandatory match)

Operating Temperature Range: -55°C to 110°C (mandatory match)

Substitute parts are grouped into two categories based on rise/fall time characteristics:

Group A (4µs/3µs Rise/Fall Time): EL816(S)(C)(TD), EL816(S)(C)(TD)-V, EL816(S)(C)(TU), EL816(S)(C)(TU)-V, EL816(S1)(C)(TD), EL816(S1)(C)(TD)-V, EL816(S1)(C)(TU), EL816(S1)(C)(TU)-V

Group B (6µs/8µs Rise/Fall Time): EL817(S)(C)(TD)-G, EL817(S)(C)(TD)-VG

All listed substitutes maintain identical electrical performance across isolation voltage, current transfer ratio, output voltage/current ratings, and thermal specifications.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	Channels	CTR Min/Max @ 5mA	Rise/Fall Time	Output Voltage (Max)	Output Current	Package	Product Status	Inventory
EL816(S1)(C)(TB)-V	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Discontinued	891 Pcs
EL816(S)(C)(TD)	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	807 Pcs
EL816(S)(C)(TD)-V	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	649 Pcs
EL816(S)(C)(TU)	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	822 Pcs
EL816(S)(C)(TU)-V	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	951 Pcs
EL816(S1)(C)(TD)	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	827 Pcs
EL816(S1)(C)(TD)-V	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	781 Pcs
EL816(S1)(C)(TU)	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	992 Pcs
EL816(S1)(C)(TU)-V	Everlight	5000Vrms	1	200%/400%	4µs, 3µs	80V	50mA	4-SMD, Gull Wing	Active	1104 Pcs
EL817(S)(C)(TD)-G	Everlight	5000Vrms	1	200%/400%	6µs, 8µs	80V	50mA	4-SMD, Gull Wing	Active	1004 Pcs
EL817(S)(C)(TD)-VG	Everlight	5000Vrms	1	200%/400%	6µs, 8µs	80V	50mA	4-SMD, Gull Wing	Active	729 Pcs

Engineering Selection Recommendations

Primary Substitutes (Identical Rise/Fall Time):

For direct replacement without timing circuit modifications, select from the EL816 series variants with 4µs rise time and 3µs fall time specifications. All eight variants within this group maintain identical switching characteristics to the discontinued EL816(S1)(C)(TB)-V. These parts are manufactured by Everlight Electronics Co Ltd and carry active product status with ROHS3 compliance and MSL 1 ratings.

Secondary Substitutes (Extended Switching Time):

The EL817(S)(C)(TD)-G and EL817(S)(C)(TD)-VG variants feature 6µs rise time and 8µs fall time. These parts are electrically equivalent across isolation voltage, current transfer ratio, output voltage/current, and thermal specifications. Selection of these variants is appropriate only when circuit design accommodates the extended switching time characteristics.

Availability and Compliance:

All substitute parts maintain active product status with confirmed inventory availability. Each part carries ROHS3 compliance certification and MSL 1 moisture sensitivity rating, matching the original part's environmental specifications. The EL816(S1)(C)(TU)-V variant offers the highest inventory level at 1104 pieces.

Frequently Asked Questions (FAQ)

Q: Can EL816(S1)(C)(TB)-V be replaced with any EL816 variant?

A: Substitution is valid only when all electrical parameters match exactly. The EL816 series variants listed in this document maintain identical isolation voltage (5000Vrms), current transfer ratio (200%-400% @ 5mA), output specifications (80V, 50mA), and package configuration (4-SMD, Gull Wing). Variants differing in these parameters are not equivalent.

Q: What is the difference between EL816 and EL817 series substitutes?

A: The primary difference is switching speed. EL816 variants feature 4µs rise time and 3µs fall time. EL817 variants feature 6µs rise time and 8µs fall time. All other electrical specifications remain identical. Selection depends on circuit timing requirements.

Q: Are the "-V" suffix variants interchangeable with non-"-V" variants?

A: Yes. The "-V" designation indicates a specific packaging or marking variant. All EL816 and EL817 parts listed maintain identical electrical performance, isolation voltage, current transfer ratio, output ratings, and thermal specifications regardless of "-V" designation.

Q: Does the package designation affect substitution compatibility?

A: No. All substitute parts use the same 4-SMD, Gull Wing surface mount package. PCB layout and reflow soldering parameters remain unchanged across all listed equivalents.

Q: What compliance certifications apply to substitute parts?

A: All substitute parts carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, matching the original EL816(S1)(C)(TB)-V specifications.

Q: Can EL817 variants be used in applications designed for EL816?

A: EL817 variants are electrically equivalent across all critical parameters. However, the extended switching time (6µs/8µs versus 4µs/3µs) may affect circuit timing. Use EL817 variants only when circuit design accommodates the slower switching characteristics or when timing is not critical to application performance.

Q: Which substitute offers the best inventory availability?

A: The EL816(S1)(C)(TU)-V variant provides the highest inventory level at 1104 pieces, with active product status and identical electrical specifications to the discontinued EL816(S1)(C)(TB)-V.

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