EL1114(TA)-G Equivalent & Substitute Parts

Part Overview

The EL1114(TA)-G is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation with a single channel configuration in a 5-SOP package. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that meet equivalent electrical and mechanical specifications. All substitute optoisolators listed maintain the same isolation voltage, output type, and mounting technology while offering variations in current transfer ratio performance grades.

Key Parameters

Parameter	Value	Unit
Isolation Voltage	5000	Vrms
Number of Channels	1	—
Output Type	Transistor with Base	—
Maximum Output Voltage	80	V
Output Current per Channel	50	mA
Maximum Vce Saturation	400	mV
Input Type	DC	—
Mounting Type	Surface Mount	—
Package	6-SOIC (0.295", 7.50mm Width), 5 Leads	—
Operating Temperature Range	-55 to 110	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the EL1114(TA)-G is determined by strict adherence to the following core parameters:

Mandatory Matching Parameters:

Isolation voltage: 5000Vrms
Number of channels: 1
Output type: Transistor with Base
Maximum output voltage: 80V (or higher)
Output current capacity: 50mA (or higher)
Input type: DC
Mounting type: Surface Mount
Package type: 6-SOIC with 5 leads
Operating temperature range: Must encompass -55°C to 110°C or be compatible with application requirements

Variable Parameters (Allowed to Differ):

Current Transfer Ratio (CTR) at specified test current
Turn-on/turn-off switching times
Rise/fall times
Vce saturation voltage
Forward voltage (Vf)
Maximum forward current (If)

The Vishay Semiconductor Opto Division TCLT series components (TCLT1100, TCLT1102, TCLT1103, TCLT1106, TCLT1107, TCLT1109) meet all mandatory matching parameters. These parts are organized by current transfer ratio performance grade, allowing selection based on specific circuit gain requirements while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Parameter	EL1114(TA)-G	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 w/ Base	Transistor w/ Base	Transistor w/ Base	Transistor w/ Base	Transistor w/ Base	Transistor w/ Base	Transistor w/ Base
Max Output Voltage	80 V	80 V	80 V	80 V	80 V	70 V	80 V
Output Current	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA
CTR Min @ Test Current	160% @ 10mA	50% @ 5mA	63% @ 10mA	100% @ 10mA	100% @ 5mA	80% @ 5mA	200% @ 5mA
CTR Max @ Test Current	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
Vce Saturation (Max)	400 mV	300 mV	300 mV	300 mV	300 mV	300 mV	300 mV
Forward Voltage (Typ)	1.5 V	1.25 V	1.25 V	1.25 V	1.25 V	1.25 V	1.25 V
Max Forward Current	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA
Operating Temperature	-55 to 110 °C	-55 to 100 °C	-55 to 100 °C	-55 to 100 °C	-55 to 100 °C	-55 to 100 °C	-55 to 100 °C
Package	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
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)

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and full RoHS3 compliance, ensuring regulatory compatibility with the EL1114(TA)-G. The primary distinction between the main part and substitutes lies in current transfer ratio performance grades and switching time characteristics.

TCLT1103 provides the closest electrical alignment to the EL1114(TA)-G, with CTR specifications (100% to 200% @ 10mA) that bracket the main part's performance range. This part is recommended for direct replacement in applications where CTR matching at 10mA test current is critical.

TCLT1107 offers lower CTR performance (80% to 160% @ 5mA) and reduced maximum output voltage (70V versus 80V). This part is suitable only for applications where the lower voltage rating and reduced gain are acceptable.

TCLT1109 provides the highest CTR performance (200% to 400% @ 5mA), making it suitable for applications requiring maximum optical coupling efficiency at lower input currents.

TCLT1100, TCLT1102, and TCLT1106 offer intermediate CTR grades. TCLT1100 spans the widest CTR range (50% to 600% @ 5mA), while TCLT1102 and TCLT1106 provide narrower, mid-range specifications.

All substitute parts operate within -55°C to 100°C, which covers the EL1114(TA)-G's lower operating limit but does not extend to the 110°C maximum. Applications requiring operation above 100°C must retain the EL1114(TA)-G.

Frequently Asked Questions (FAQ)

Q: Can TCLT1107 replace EL1114(TA)-G in all applications?

A: TCLT1107 has a maximum output voltage of 70V compared to the EL1114(TA)-G's 80V. Substitution is valid only if the application's output voltage requirement does not exceed 70V. Additionally, TCLT1107 has lower CTR performance, which may affect circuit gain.

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

A: CTR determines the optical coupling efficiency between input and output. Higher CTR means more output current is generated for a given input current. The EL1114(TA)-G specifies 160% to 320% @ 10mA. Substitutes with different CTR grades will produce different output current levels for identical input conditions. Circuit design must account for these differences.

Q: Are all substitute parts pin-compatible with EL1114(TA)-G?

A: Yes. All listed substitutes use the 6-SOIC package with 5 leads, maintaining identical pinout and footprint compatibility. PCB layout changes are not required.

Q: Why do substitute parts have different operating temperature maximums?

A: The EL1114(TA)-G operates to 110°C, while all Vishay TCLT substitutes operate to 100°C maximum. Applications requiring operation above 100°C cannot use the listed substitutes and must retain the EL1114(TA)-G.

Q: Which substitute part is best for high-speed switching applications?

A: The EL1114(TA)-G has the fastest switching times (4µs turn-on, 3µs turn-off). All Vishay TCLT substitutes have slower switching (6µs turn-on, 5µs turn-off). For applications requiring the fastest response, the EL1114(TA)-G is the only option among these parts.

Q: Can I use TCLT1100 if my circuit requires CTR above 160%?

A: Yes. TCLT1100 has a maximum CTR of 600% @ 5mA, which exceeds the EL1114(TA)-G's 320% @ 10mA. However, the test current differs (5mA versus 10mA), so direct comparison requires circuit analysis. TCLT1109 also provides high CTR (200% to 400% @ 5mA).

Q: Are all parts RoHS3 compliant?

A: Yes. The EL1114(TA)-G and all listed Vishay TCLT substitutes are RoHS3 compliant with MSL 1 (unlimited moisture sensitivity), ensuring compatibility with modern manufacturing and environmental standards.

Q: What is the difference between 5-SOP and 6-SOP packaging?

A: The EL1114(TA)-G uses 5-SOP (5 leads), while substitutes use 6-SOIC with 5 leads. Both are functionally equivalent 6-pin packages with one unused lead. The physical footprint and pinout are identical for PCB compatibility.

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