EL816(S)(A)(TB)-V Equivalent & Substitute Parts

Part Overview

The EL816(S)(A)(TB)-V is a single-channel optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation voltage and is designed for DC input applications requiring galvanic isolation in 4-SMD surface mount packages. The part is currently discontinued at DiGi Electronics, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for seamless design substitution.

Key Parameters

Parameter	Value
Manufacturer	Everlight Electronics Co Ltd
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 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(S)(A)(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: 80% minimum and 160% maximum at 5mA (mandatory match)

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

Input Type: DC input (mandatory match)

Switching Characteristics: Rise time 4µs and fall time 3µs (mandatory match)

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

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

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

All substitute parts listed maintain identical electrical performance and mechanical compatibility with the discontinued EL816(S)(A)(TB)-V. The primary distinction among substitutes is product status (active versus discontinued) and packaging designation codes within the EL816 and EL817 series.

Parameter Comparison

Part Number	Manufacturer	Product Status	Isolation Voltage	CTR Min / Max	Rise / Fall Time	Output Voltage (Max)	Output Current	Package	Inventory
EL816(S)(A)(TB)-V	Everlight	Discontinued	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	1129 Pcs
EL816(S)(A)(TD)	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	973 Pcs
EL816(S)(A)(TD)-V	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	971 Pcs
EL816(S)(A)(TU)	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	825 Pcs
EL816(S)(A)(TU)-V	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	954 Pcs
EL816(S1)(A)(TD)	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	1063 Pcs
EL816(S1)(A)(TD)-V	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	989 Pcs
EL816(S1)(A)(TU)	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	756 Pcs
EL816(S1)(A)(TU)-V	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	778 Pcs
EL816S2(A)(TU)-V	Everlight	Active	5000Vrms	80% / 160%	4µs / 3µs	80V	50mA	4-SMD	939 Pcs
EL817(S)(A)(TD)-G	Everlight	Active	5000Vrms	80% / 160%	6µs / 8µs	80V	50mA	4-SMD	904 Pcs

Engineering Selection Recommendations

Primary Substitutes (Identical Switching Characteristics):

The following parts provide complete electrical and mechanical equivalence to the EL816(S)(A)(TB)-V with rise/fall times of 4µs and 3µs:

EL816(S)(A)(TD), EL816(S)(A)(TD)-V, EL816(S)(A)(TU), EL816(S)(A)(TU)-V, EL816(S1)(A)(TD), EL816(S1)(A)(TD)-V, EL816(S1)(A)(TU), EL816(S1)(A)(TU)-V, and EL816S2(A)(TU)-V.

All listed primary substitutes are active products with ROHS3 compliance and MSL 1 rating. These parts are suitable for direct replacement in existing designs without circuit modification.

Secondary Substitute (Slower Switching):

EL817(S)(A)(TD)-G is electrically equivalent across isolation voltage, output specifications, and current transfer ratio. This part differs in switching speed with rise/fall times of 6µs and 8µs respectively. This substitute is appropriate only for applications where the slower switching response does not impact system performance requirements.

Availability Consideration:

All substitute parts maintain active product status with inventory availability ranging from 756 to 1129 pieces, ensuring supply chain continuity for production requirements.

Frequently Asked Questions (FAQ)

Q: Can EL816(S)(A)(TD)-V be used as a direct replacement for EL816(S)(A)(TB)-V?

A: Yes. EL816(S)(A)(TD)-V maintains identical electrical specifications including 5000Vrms isolation, 80-160% current transfer ratio, 4µs/3µs switching times, and 4-SMD package configuration. The part is active and ROHS3 compliant.

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

A: Both series provide 5000Vrms isolation with single-channel transistor output in 4-SMD packages. The EL817(S)(A)(TD)-G differs in switching speed with 6µs rise time and 8µs fall time compared to 4µs and 3µs in the EL816 series. Electrical performance across isolation voltage, output voltage, and current specifications remains identical.

Q: Are all listed substitutes ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, meeting environmental and reliability standards equivalent to the original EL816(S)(A)(TB)-V.

Q: What do the suffix codes (S), (S1), (S2), (TD), (TU), (TB) represent?

A: These designations indicate internal configuration and packaging variants within the EL816 series. All variants listed maintain identical electrical performance and 4-SMD package form factor. Selection among variants depends on specific supply chain availability and internal sourcing requirements.

Q: Is the 4-SMD Gull Wing package compatible with standard surface mount assembly equipment?

A: Yes. The 4-SMD Gull Wing package is a standard surface mount configuration compatible with conventional pick-and-place and reflow soldering processes. No special handling or equipment modifications are required for assembly.

Q: Can EL816S2(A)(TU)-V be substituted in designs originally specified for EL816(S)(A)(TB)-V?

A: Yes. EL816S2(A)(TU)-V provides complete electrical equivalence with identical isolation voltage, current transfer ratio, switching characteristics, and output specifications. The part is active with 939 pieces in inventory.

Q: What inventory levels are available for substitute parts?

A: Inventory availability ranges from 756 to 1129 pieces across all listed substitutes. EL816(S1)(A)(TD) offers the highest availability at 1063 pieces, while EL816(S1)(A)(TU) offers the lowest at 756 pieces.

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