EL1012(TA)-G Equivalent & Substitute Parts

Part Overview

The EL1012(TA)-G is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation in a 4-SOP surface mount package and is classified as Active product status. The device integrates a single channel optoisolator with DC input and transistor output configuration, suitable for applications requiring galvanic isolation in industrial and consumer electronics.

Substitute parts are identified based on matching core electrical and mechanical specifications: 5000Vrms isolation voltage, single channel configuration, transistor output type, DC input, 4-SOP package format, 50mA output current capability, and surface mount gull wing package style. Substitutes must maintain compatibility with the specified operating temperature range and output voltage ratings while accommodating variations in current transfer ratio specifications.

Key Parameters

Parameter	EL1012(TA)-G Value	Unit
Voltage - Isolation	5000	Vrms
Number of Channels	1	—
Output Type	Transistor	—
Input Type	DC	—
Current Transfer Ratio (Min)	63	% @ 10mA
Current Transfer Ratio (Max)	125	% @ 10mA
Voltage - Output (Max)	80	V
Current - Output / Channel	50	mA
Vce Saturation (Max)	300	mV
Operating Temperature	-55 to 110	°C
Package / Case	4-SMD, Gull Wing	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the EL1012(TA)-G are qualified based on the following core parameters that determine functional equivalence:

Critical Matching Parameters:

Voltage - Isolation: 5000Vrms (mandatory)
Number of Channels: 1 (mandatory)
Output Type: Transistor (mandatory)
Input Type: DC (mandatory)
Package / Case: 4-SMD, Gull Wing (mandatory)
Current - Output / Channel: 50mA (mandatory)
Vce Saturation (Max): 300mV or 400mV (acceptable tolerance)
Voltage - Output (Max): 70V or 80V (acceptable tolerance)

Variable Parameters (Substitution Allowed):

Current Transfer Ratio (Min/Max): Varies by part grade
Turn On / Turn Off Time: Varies by manufacturer
Rise / Fall Time: Varies by manufacturer
Operating Temperature Range: -55°C to 100°C or -55°C to 110°C
Voltage - Forward (Vf): 1.16V to 1.45V
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel®

All substitute parts listed maintain 5000Vrms isolation, single channel transistor output configuration, and 4-SOP surface mount package compatibility. Substitutes from Vishay Semiconductor Opto Division (TCLT and VOL series) and Everlight Electronics provide functional equivalence within the specified parameter ranges.

Parameter Comparison

Parameter	EL1012(TA)-G	TCLT1000	TCLT1002	TCLT1003	TCLT1005	TCLT1006	TCLT1007	TCLT1008	TCLT1009	VOL617A-1X001T	VOL617A-2X001T
Voltage - Isolation	5000V	5000V	5000V	5000V	5000V	5000V	5000V	5000V	5000V	5000V	5000V
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Input Type	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC	DC
Current Transfer Ratio (Min)	63% @ 10mA	50% @ 5mA	63% @ 10mA	100% @ 10mA	50% @ 5mA	100% @ 5mA	80% @ 5mA	130% @ 5mA	200% @ 5mA	40% @ 5mA	63% @ 5mA
Current Transfer Ratio (Max)	125% @ 10mA	600% @ 5mA	125% @ 10mA	200% @ 10mA	150% @ 5mA	300% @ 5mA	160% @ 5mA	260% @ 5mA	400% @ 5mA	80% @ 5mA	125% @ 5mA
Voltage - Output (Max)	80V	70V	70V	70V	70V	70V	70V	70V	70V	80V	80V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	300mV	300mV	300mV	300mV	300mV	300mV	300mV	300mV	300mV	400mV	400mV
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	-55 to 100°C	-55 to 100°C	-55 to 110°C	-55 to 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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	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	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

TCLT1002 and VOL617A-2X001T provide the closest electrical match to the EL1012(TA)-G. Both parts maintain identical current transfer ratio specifications (63% minimum, 125% maximum at 10mA and 5mA respectively), matching the primary device's performance envelope. These parts are ROHS3 compliant with MSL 1 rating and maintain the required 5000Vrms isolation and 50mA output current specifications.

Secondary Substitutes (Extended Operating Range):

TCLT1003, TCLT1006, TCLT1007, and TCLT1008 offer higher current transfer ratios (100% to 260% minimum) suitable for applications requiring enhanced switching performance. These parts maintain full electrical compatibility with the EL1012(TA)-G core specifications but operate within the -55°C to 100°C temperature range, which is 10°C narrower at the upper limit compared to the primary device.

Alternative Substitutes (Specific Application Requirements):

VOL617A-1X001T and VOL617A-2X001T from the VOL617 series provide 80V maximum output voltage matching the EL1012(TA)-G specification, with operating temperature range of -55°C to 110°C. These parts feature 400mV maximum Vce saturation compared to 300mV in the primary device and lower forward voltage (1.16V typical). VOL617A-1X001T operates at 40% to 80% current transfer ratio, while VOL617A-2X001T matches the primary device at 63% to 125%.

Packaging Considerations:

TCLT1002 and TCLT1009 are supplied in Cut Tape (CT) & Digi-Reel® format. All other TCLT variants and VOL617 series are supplied in Tape & Reel (TR) format, matching the EL1012(TA)-G packaging specification. Packaging format selection depends on assembly process requirements and volume specifications.

Compliance Status:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols. All parts are classified as Active product status.

Frequently Asked Questions (FAQ)

Q: Can TCLT1000 replace the EL1012(TA)-G directly?

A: TCLT1000 is functionally compatible for applications where the current transfer ratio range of 50% to 600% at 5mA input current is acceptable. However, the EL1012(TA)-G specifies current transfer ratio at 10mA input (63% to 125%), while TCLT1000 is characterized at 5mA. The operating temperature range of TCLT1000 extends to 100°C maximum, compared to 110°C for the EL1012(TA)-G. Direct substitution is possible when application requirements do not exceed 100°C upper operating limit.

Q: What is the difference between TCLT1002 and TCLT1003?

A: Both parts maintain 5000Vrms isolation and 4-SOP package compatibility. TCLT1002 specifies 63% to 125% current transfer ratio at 10mA input, identical to the EL1012(TA)-G. TCLT1003 specifies 100% to 200% current transfer ratio at 10mA input, providing higher minimum gain. Selection depends on circuit design requirements for switching speed and output current capability.

Q: Are VOL617A series parts compatible with TCLT series parts?

A: VOL617A-1X001T and VOL617A-2X001T are electrically compatible with TCLT series parts for the core 5000Vrms isolation, single channel transistor output, and 4-SOP package specifications. VOL617A series parts feature 80V maximum output voltage and 400mV maximum Vce saturation, compared to 70V and 300mV in TCLT series. VOL617A-2X001T matches the EL1012(TA)-G current transfer ratio specification (63% to 125% at 5mA), making it a direct functional equivalent.

Q: What packaging formats are available for substitutes?

A: Tape & Reel (TR) packaging is available for TCLT1000, TCLT1005, TCLT1006, TCLT1007, TCLT1008, VOL617A-1X001T, and VOL617A-2X001T. Cut Tape (CT) & Digi-Reel® packaging is available for TCLT1002, TCLT1003, and TCLT1009. The EL1012(TA)-G is supplied in Tape & Reel (TR) format. Packaging selection should align with assembly process specifications and volume requirements.

Q: Can I use a substitute with a lower maximum output voltage?

A: TCLT series parts specify 70V maximum output voltage, compared to 80V for the EL1012(TA)-G and VOL617A series. Substitution with lower output voltage rating is acceptable only when circuit design ensures output voltage does not exceed 70V under all operating conditions. Application review is required to confirm voltage margin compliance.

Q: What is the significance of current transfer ratio specifications at different input currents?

A: Current transfer ratio (CTR) is the ratio of output collector current to input LED current. The EL1012(TA)-G specifies CTR at 10mA input current (63% to 125%), while many TCLT variants specify CTR at 5mA input current. Higher input current typically results in lower CTR percentage. Circuit design must account for the specified input current condition when selecting substitutes to ensure proper gain and switching performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all substitute parts listed (TCLT1000 through TCLT1009 and VOL617A series) are ROHS3 compliant. The EL1012(TA)-G is also ROHS3 compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture control requirements during storage or handling.

Q: What is the operating temperature difference between EL1012(TA)-G and TCLT series?

A: The EL1012(TA)-G operates from -55°C to 110°C. TCLT series parts operate from -55°C to 100°C, providing 10°C less upper temperature margin. VOL617A series parts match the EL1012(TA)-G operating range of -55°C to 110°C. Application requirements for high-temperature operation should be evaluated when selecting between TCLT and VOL617A substitutes.

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