EL1114(TA)-VG Equivalent & Substitute Parts

Part Overview

The EL1114(TA)-VG is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation with a single channel, transistor output configuration, and 5-SOP packaging. The part is Active status and widely used in industrial isolation applications requiring high voltage separation between input and output circuits.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across isolation voltage, output type, channel count, and package form factor. The Vishay Semiconductor Opto Division TCLT series provides direct functional alternatives with comparable isolation ratings and output specifications.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Isolation Voltage	5000	Vrms	Critical - must match or exceed
Number of Channels	1	Channel	Critical - must match
Output Type	Transistor with Base	Type	Critical - must match
Output Voltage (Max)	80	V	Critical - substitute must support
Output Current / Channel	50	mA	Critical - must match or exceed
Package / Case	6-SOIC (0.295", 7.50mm Width), 5 Leads	Form Factor	Critical - must match for PCB compatibility
Mounting Type	Surface Mount	Type	Critical - must match
Input Type	DC	Type	Critical - must match
RoHS Status	ROHS3 Compliant	Compliance	Important - regulatory requirement
Moisture Sensitivity Level	1 (Unlimited)	MSL	Important - handling and storage

Substitute Part Grouping Explanation

Substitute parts for the EL1114(TA)-VG are identified from the Vishay Semiconductor Opto Division TCLT series based on the following substitution criteria:

Critical Matching Parameters:

Isolation Voltage: 5000Vrms (all substitutes match)
Number of Channels: 1 (all substitutes match)
Output Type: Transistor with Base (all substitutes match)
Output Voltage Maximum: 80V or higher (all substitutes support 80V except TCLT1107 at 70V)
Output Current: 50mA per channel (all substitutes match)
Mounting Type: Surface Mount (all substitutes match)
Package Form Factor: 6-SOIC, 5 Leads (all substitutes match)
Input Type: DC (all substitutes match)

Compliance Parameters:

RoHS3 Compliant (all substitutes comply)
MSL Level 1 (all substitutes match)

The five substitute parts (TCLT1100, TCLT1102, TCLT1103, TCLT1106, TCLT1107, TCLT1109) differ primarily in Current Transfer Ratio specifications and switching time characteristics. These differences allow selection based on specific application requirements while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Parameter	EL1114(TA)-VG	TCLT1100	TCLT1102	TCLT1103	TCLT1106	TCLT1107	TCLT1109
Manufacturer	Everlight Electronics	Vishay Opto	Vishay Opto	Vishay Opto	Vishay Opto	Vishay Opto	Vishay Opto
Isolation Voltage	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms
Number of Channels	1	1	1	1	1	1	1
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	80 V	80 V	80 V	80 V	80 V	70 V	80 V
Current - Output / Channel	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA
Current Transfer Ratio (Min)	160% @ 10mA	50% @ 5mA	63% @ 10mA	100% @ 10mA	100% @ 5mA	80% @ 5mA	200% @ 5mA
Current Transfer Ratio (Max)	320% @ 10mA	600% @ 5mA	125% @ 10mA	200% @ 10mA	300% @ 5mA	160% @ 5mA	400% @ 5mA
Turn On Time (Typ)	4 µs	6 µs	6 µs	6 µs	6 µs	6 µs	6 µs
Turn Off Time (Typ)	3 µs	5 µs	5 µs	5 µs	5 µs	5 µs	5 µs
Rise Time (Typ)	2 µs	3 µs	3 µs	3 µs	3 µs	3 µs	3 µs
Fall Time (Typ)	3 µs	4.7 µs	4.7 µs	4.7 µs	4.7 µs	4.7 µs	4.7 µs
Vce Saturation (Max)	400 mV	300 mV	300 mV	300 mV	300 mV	300 mV	300 mV
Voltage - Forward (Vf) (Typ)	1.5 V	1.25 V	1.25 V	1.25 V	1.25 V	1.25 V	1.25 V
Current - DC Forward (If) (Max)	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA
Operating Temperature	-55°C ~ 110°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	6-SOIC, 5 Leads	6-SOIC, 5 Leads	6-SOIC, 5 Leads	6-SOIC, 5 Leads	6-SOIC, 5 Leads	6-SOIC, 5 Leads	6-SOIC, 5 Leads
Mounting Type	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
MSL Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. Selection among the TCLT series should be based on Current Transfer Ratio requirements and operating temperature range specifications.

TCLT1107 is suitable for applications requiring lower maximum output voltage (70V) with moderate current transfer ratios (80-160% @ 5mA). This part offers the most conservative performance envelope.

TCLT1100 provides the widest current transfer ratio range (50-600% @ 5mA), accommodating applications with variable input current conditions.

TCLT1102 and TCLT1103 offer mid-range current transfer ratios (63-125% @ 10mA and 100-200% @ 10mA respectively), suitable for standard isolation applications.

TCLT1106 delivers high current transfer ratios (100-300% @ 5mA) with full 80V output voltage support.

TCLT1109 provides the highest current transfer ratios (200-400% @ 5mA), optimized for applications requiring maximum optical coupling efficiency.

All substitute parts operate within -55°C to 100°C temperature range, which is narrower than the EL1114(TA)-VG range (-55°C to 110°C). Applications requiring operation above 100°C must retain the original EL1114(TA)-VG part.

Frequently Asked Questions (FAQ)

Q: Can TCLT series parts directly replace EL1114(TA)-VG in existing PCB designs?

A: Yes, all TCLT series substitutes share identical 6-SOIC package geometry with 5 leads and surface mount configuration. PCB footprints are mechanically compatible. Electrical compatibility is maintained across isolation voltage, channel count, output type, and current ratings.

Q: What is the primary difference between EL1114(TA)-VG and TCLT substitute parts?

A: The main differences are Current Transfer Ratio specifications and switching time characteristics. EL1114(TA)-VG specifies 160-320% CTR @ 10mA with 4µs turn-on time. TCLT parts vary in CTR ranges and measure turn-on at 6µs. All parts maintain 5000Vrms isolation and 50mA output current.

Q: Which TCLT part is the closest electrical match to EL1114(TA)-VG?

A: TCLT1103 provides the closest Current Transfer Ratio match (100-200% @ 10mA) to the EL1114(TA)-VG specification. Both measure CTR at 10mA input current, enabling direct performance comparison.

Q: Are there temperature range limitations when substituting?

A: Yes. EL1114(TA)-VG operates to 110°C, while all TCLT substitutes operate to 100°C maximum. Applications requiring operation above 100°C must use the original EL1114(TA)-VG part.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All TCLT series parts (TCLT1100, TCLT1102, TCLT1103, TCLT1106, TCLT1107, TCLT1109) are ROHS3 Compliant with MSL Level 1 (Unlimited), matching the original part's regulatory status.

Q: What is the significance of Current Transfer Ratio differences?

A: Current Transfer Ratio determines the optical coupling efficiency between input LED and output transistor. Higher CTR values require less input current to achieve full output saturation. Selection depends on available input drive current and desired output switching characteristics.

Q: Can TCLT1107 be used in all applications where EL1114(TA)-VG is specified?

A: TCLT1107 has a maximum output voltage of 70V compared to EL1114(TA)-VG at 80V. Applications requiring output voltages between 70V and 80V must use alternative substitutes (TCLT1100, TCLT1102, TCLT1103, TCLT1106, or TCLT1109) or retain the original part.

Q: Is packaging identical between EL1114(TA)-VG and TCLT series?

A: Both use 6-SOIC (0.295", 7.50mm Width) with 5 leads in surface mount configuration. Mechanical compatibility is confirmed. Supplier device package designations differ (5-SOP for EL1114 vs. 6-SOP for TCLT), but physical form factors are equivalent.

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