EL816(S1)(C)(TA)-V Equivalent & Substitute Parts

Part Overview

The EL816(S1)(C)(TA)-V is a 5000Vrms optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides galvanic isolation for single-channel DC input applications in 4-SMD surface mount packaging. The part is currently discontinued at DiGi Electronics, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct circuit substitution.

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)(TA)-V is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must match identically for direct substitution:

Critical Matching Parameters:

Voltage - Isolation: 5000Vrms
Number of Channels: 1
Current Transfer Ratio (Min): 200% @ 5mA
Current Transfer Ratio (Max): 400% @ 5mA
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
Package / Case: 4-SMD, Gull Wing
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts maintain these specifications. Variations in part number designations (such as S, S1, TD, TU, and suffix modifiers) represent manufacturing code variations within the EL816 and EL817 base product families that do not alter functional performance for the specified application parameters.

Parameter Comparison

Parameter	EL816(S1)(C)(TA)-V	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	EL817(S)(C)(TD)-G	EL817(S)(C)(TD)-VG
Manufacturer	Everlight	Everlight	Everlight	Everlight	Everlight	Everlight	Everlight	Everlight	Everlight	Everlight	Everlight
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Current Transfer Ratio (Min)	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA	200% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA	400% @ 5mA
Rise / Fall Time (Typ)	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	4µs, 3µs	6µs, 8µs	6µs, 8µs
Input Type	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	80V	80V	80V	80V	80V	80V	80V	80V	80V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA
Vce Saturation (Max)	200mV	200mV	200mV	200mV	200mV	200mV	200mV	200mV	200mV	200mV	200mV
Operating Temperature	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C	-55°C ~ 110°C
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Discontinued	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

The EL816(S1)(C)(TA)-V is discontinued and no longer available through standard distribution channels. Direct substitution is available through nine active equivalent parts from Everlight Electronics Co Ltd, all maintaining identical electrical specifications and 4-SMD surface mount packaging.

Primary Substitutes (EL816 Base Product Family):

The following parts provide direct electrical and mechanical equivalence with active product status:

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

All EL816 variants maintain identical rise/fall time specifications of 4µs and 3µs respectively, ensuring timing-critical circuit performance is preserved.

Alternative Substitute (EL817 Base Product Family):

The EL817(S)(C)(TD)-G and EL817(S)(C)(TD)-VG provide functional equivalence with all critical electrical parameters matching the original part. These variants exhibit slower rise/fall times of 6µs and 8µs respectively, which may be acceptable in applications where timing margins are not critical.

All substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original part's environmental and regulatory compliance profile.

Frequently Asked Questions (FAQ)

Q: Can EL816(S1)(C)(TA)-V be directly replaced with EL816(S)(C)(TD)?

A: Yes. Both parts maintain identical electrical specifications including 5000Vrms isolation, 200-400% current transfer ratio, 4µs/3µs rise/fall times, 80V maximum output voltage, and 50mA output current. The 4-SMD gull wing package is identical, enabling direct PCB substitution.

Q: What is the difference between EL816 and EL817 variants?

A: The primary difference is rise/fall time performance. EL816 variants specify 4µs rise and 3µs fall times, while EL817 variants specify 6µs rise and 8µs fall times. All other electrical parameters remain identical. EL817 substitution is acceptable only when circuit timing requirements permit the slower switching response.

Q: Are the manufacturing code variations (S, S1, TD, TU) significant for substitution?

A: No. These designations represent internal manufacturing codes and packaging variations that do not affect the functional electrical specifications. All variants with matching base product numbers (EL816 or EL817) and identical parameter specifications are electrically interchangeable.

Q: Does the "-V" suffix in the part number affect substitution compatibility?

A: No. The "-V" suffix is a manufacturing designation that does not alter electrical performance or package specifications. Parts with and without this suffix maintain identical functional characteristics.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification matching the original EL816(S1)(C)(TA)-V specification.

Q: What is the MSL rating for these optoisolators?

A: All parts maintain MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processing.

Q: Can I use EL817(S)(C)(TD)-G as a substitute if my circuit has tight timing requirements?

A: EL817 variants have slower switching times (6µs/8µs versus 4µs/3µs). Use EL817 substitutes only if your circuit design accommodates the slower rise and fall times. For timing-critical applications, select from the EL816 family variants.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. Inventory levels vary across substitute part numbers. Verify current stock availability with your supplier before finalizing component selection, particularly for high-volume production requirements.

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