EL1112(TA)-VG Equivalent & Substitute Parts

Part Overview

The EL1112(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 isolation with integrated base drive capability.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives meeting equivalent electrical and mechanical specifications.

Key Parameters

Parameter	Value
Isolation Voltage	5000Vrms
Number of Channels	1
Output Type	Transistor with Base
Maximum Output Voltage	80V
Maximum Output Current	50mA
Input Type	DC
Operating Temperature Range	-55°C to 110°C
Mounting Type	Surface Mount
Package	6-SOIC (0.295", 7.50mm Width), 5 Leads
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the EL1112(TA)-VG are qualified based on the following mandatory parameters:

Core Compatibility Criteria:

Isolation voltage: 5000Vrms minimum
Number of channels: 1
Output type: Transistor with Base
Maximum output voltage: 80V or greater
Maximum output current: 50mA or greater
Input type: DC
Mounting type: Surface Mount
Package compatibility: 6-SOIC (0.295", 7.50mm Width), 5 Leads
RoHS3 compliance
MSL rating: 1 (Unlimited)

Variable Parameters Permitting Substitution:

Current Transfer Ratio (CTR) at different test currents
Turn-on/turn-off switching times
Rise/fall times
Forward voltage characteristics
Vce saturation voltage
Operating temperature maximum (minimum -55°C required)

All substitute parts listed maintain the core isolation, channel count, output configuration, and package specifications. Variations in switching speed and CTR characteristics are within acceptable ranges for this component category.

Parameter Comparison

Parameter	EL1112(TA)-VG	TCLT1100	TCLT1102	TCLT1103	TCLT1106	TCLT1107	TCLT1109
Manufacturer	Everlight Electronics	Vishay Semiconductor Opto	Vishay Semiconductor Opto	Vishay Semiconductor Opto	Vishay Semiconductor Opto	Vishay Semiconductor Opto	Vishay Semiconductor Opto
Isolation Voltage	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms
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)	80V	80V	80V	80V	80V	70V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA	50mA
CTR (Min) @ Test Current	63% @ 10mA	50% @ 5mA	63% @ 10mA	100% @ 10mA	100% @ 5mA	80% @ 5mA	200% @ 5mA
CTR (Max) @ Test Current	125% @ 10mA	600% @ 5mA	125% @ 10mA	200% @ 10mA	300% @ 5mA	160% @ 5mA	400% @ 5mA
Turn On Time (Typ)	4µs	6µs	6µs	6µs	6µs	6µs	6µs
Turn Off Time (Typ)	3µs	5µs	5µs	5µs	5µs	5µs	5µs
Rise Time (Typ)	2µs	3µs	3µs	3µs	3µs	3µs	3µs
Fall Time (Typ)	3µs	4.7µs	4.7µs	4.7µs	4.7µs	4.7µs	4.7µs
Vce Saturation (Max)	400mV	300mV	300mV	300mV	300mV	300mV	300mV
Voltage - Forward (Vf) (Typ)	1.5V	1.25V	1.25V	1.25V	1.25V	1.25V	1.25V
Current - DC Forward (If) (Max)	60mA	60mA	60mA	60mA	60mA	60mA	60mA
Operating Temperature	-55°C to 110°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	6-SOIC (0.295", 7.50mm Width), 5 Leads	6-SOIC (0.295", 7.50mm Width), 5 Leads	6-SOIC (0.295", 7.50mm Width), 5 Leads	6-SOIC (0.295", 7.50mm Width), 5 Leads	6-SOIC (0.295", 7.50mm Width), 5 Leads	6-SOIC (0.295", 7.50mm Width), 5 Leads	6-SOIC (0.295", 7.50mm Width), 5 Leads
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	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 listed substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the EL1112(TA)-VG.

TCLT1102 Selection: Identical CTR specification (63% to 125% @ 10mA) to the EL1112(TA)-VG. Switching times are slightly slower (6µs turn-on vs. 4µs). Vce saturation is improved (300mV vs. 400mV). Operating temperature maximum is 100°C versus 110°C. Direct functional equivalent for applications not requiring the extended upper temperature range.

TCLT1103 Selection: Higher CTR range (100% to 200% @ 10mA) provides increased current transfer efficiency. Switching characteristics identical to TCLT1102. Suitable for applications requiring higher gain performance within the same package and isolation specification.

TCLT1106 Selection: CTR tested at 5mA input (100% to 300% @ 5mA) versus 10mA for the main part. Provides higher gain margin. Switching times and saturation voltage consistent with other Vishay alternatives. Appropriate for low-input-current drive circuits.

TCLT1107 Selection: CTR range 80% to 160% @ 5mA. Maximum output voltage limited to 70V versus 80V for the main part. Switching characteristics standard. Selection restricted to applications with output voltage requirements not exceeding 70V.

TCLT1109 Selection: Highest CTR range (200% to 400% @ 5mA) among substitutes. Provides maximum current transfer efficiency. Maintains 80V output voltage rating. Suitable for applications requiring highest gain performance.

TCLT1100 Selection: Lowest CTR minimum (50% @ 5mA) among substitutes. Widest CTR range (50% to 600% @ 5mA) indicates broader manufacturing tolerance. Selection appropriate only when circuit design accommodates wide CTR variation.

All substitutes are electrically and mechanically compatible with the EL1112(TA)-VG within the specified parameter ranges. Selection among alternatives depends on specific circuit requirements for CTR, switching speed, and operating temperature.

Frequently Asked Questions (FAQ)

Q: Can TCLT1107 be used in place of EL1112(TA)-VG in all applications?

A: TCLT1107 is compatible for applications where the maximum output voltage requirement does not exceed 70V. The EL1112(TA)-VG supports 80V maximum output voltage. Verify circuit design specifications before substitution.

Q: What is the significance of CTR test current differences between parts?

A: Current Transfer Ratio is measured at specified input currents. EL1112(TA)-VG specifies CTR at 10mA input, while some Vishay alternatives specify CTR at 5mA input. Both specifications are valid; circuit design must account for the actual input current used in the application.

Q: Are all substitute parts pin-compatible with EL1112(TA)-VG?

A: All substitute parts use 6-SOIC (0.295", 7.50mm Width) packaging with 5 leads. Physical footprint and pin spacing are identical. PCB layout compatibility is confirmed.

Q: Does the operating temperature difference affect substitution suitability?

A: EL1112(TA)-VG operates to 110°C maximum; all Vishay substitutes operate to 100°C maximum. Applications requiring operation above 100°C must use the EL1112(TA)-VG. Applications with maximum operating temperature at or below 100°C are compatible with all substitutes.

Q: Which substitute part most closely matches EL1112(TA)-VG specifications?

A: TCLT1102 provides identical CTR specification (63% to 125% @ 10mA) and equivalent electrical performance. The primary difference is the 10°C lower maximum operating temperature (100°C vs. 110°C).

Q: Can switching time differences impact circuit performance?

A: EL1112(TA)-VG has faster turn-on time (4µs vs. 6µs) compared to Vishay substitutes. Applications with strict switching speed requirements must evaluate whether the 2µs difference affects system timing. Rise and fall times are comparable across all parts.

Q: What does Vce saturation voltage difference mean for circuit design?

A: EL1112(TA)-VG has 400mV maximum Vce saturation; Vishay substitutes have 300mV maximum. Lower saturation voltage in substitutes results in reduced output transistor voltage drop and lower power dissipation. This is a performance improvement for most applications.

Q: Are all parts available in Tape & Reel packaging?

A: All listed parts are supplied in Tape & Reel (TR) packaging suitable for automated assembly processes. Packaging format is consistent across the main part and all substitutes.

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