TPC817MA C9G Equivalent & Substitute Parts

Part Overview

The TPC817MA C9G is a 5000Vrms optoisolator with transistor output manufactured by Taiwan Semiconductor Corporation. This component provides galvanic isolation for DC input signals with a single-channel transistor output configuration in a 4-DIP package. The TPC817MA C9G is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical and mechanical compatibility across isolation voltage, current transfer ratio, output characteristics, and package specifications.

Key Parameters

Parameter	Value
Voltage - Isolation	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	80% @ 5mA
Current Transfer Ratio (Max)	160% @ 5mA
Output Type	Transistor
Voltage - Output (Max)	80V
Current - Output / Channel	50mA
Vce Saturation (Max)	200mV
Package / Case	4-DIP (0.400", 10.16mm)
Mounting Type	Through Hole
Operating Temperature	-40°C ~ 100°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TPC817MA C9G is determined by strict equivalence across the following critical parameters:

Isolation and Safety Characteristics:

Voltage - Isolation must equal 5000Vrms
Single-channel configuration required

Electrical Performance:

Current Transfer Ratio range: 80% to 160% @ 5mA
Output voltage capability: 80V maximum
Output current per channel: 50mA
Vce saturation: 200mV maximum
Input type: DC
Output type: Transistor

Physical and Environmental Compatibility:

Package: 4-DIP (0.400", 10.16mm)
Mounting: Through Hole
Operating temperature range must encompass or exceed -40°C to 100°C
Compliance: ROHS3 Compliant

Substitute Identification: The EL817(M)(A))-VG manufactured by Everlight Electronics Co Ltd meets all substitution criteria for the TPC817MA C9G. This part maintains identical isolation voltage, channel count, current transfer ratio specifications, output characteristics, and package configuration. The EL817(M)(A))-VG is classified as Active product status, providing long-term availability and supply continuity.

Parameter Comparison

Parameter	TPC817MA C9G	EL817(M)(A))-VG	Match Status
Manufacturer	Taiwan Semiconductor Corporation	Everlight Electronics Co Ltd	Different Manufacturer
Voltage - Isolation	5000Vrms	5000Vrms	Equivalent
Number of Channels	1	1	Equivalent
Current Transfer Ratio (Min)	80% @ 5mA	80% @ 5mA	Equivalent
Current Transfer Ratio (Max)	160% @ 5mA	160% @ 5mA	Equivalent
Output Type	Transistor	Transistor	Equivalent
Voltage - Output (Max)	80V	80V	Equivalent
Current - Output / Channel	50mA	50mA	Equivalent
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	Equivalent
Vce Saturation (Max)	200mV	200mV	Equivalent
Package / Case	4-DIP (0.400", 10.16mm)	4-DIP (0.400", 10.16mm)	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Operating Temperature	-40°C ~ 100°C	-55°C ~ 110°C	Substitute Exceeds Range
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Substitute Active
Rise / Fall Time (Typ)	4µs, 3µs	6µs, 8µs	Substitute Slower

Engineering Selection Recommendations

Primary Substitute: EL817(M)(A))-VG

The EL817(M)(A))-VG is the direct functional equivalent for the obsolete TPC817MA C9G. Selection of this substitute is based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match the TPC817MA C9G specification: 5000Vrms isolation voltage, 80-160% current transfer ratio at 5mA, 80V maximum output voltage, 50mA output current, and 200mV maximum Vce saturation. The substitute maintains identical input and output characteristics for DC-triggered transistor output operation.

Package and Mounting Compatibility: Both parts use identical 4-DIP (0.400", 10.16mm) through-hole packaging, ensuring direct PCB layout compatibility without redesign.

Compliance and Availability: The EL817(M)(A))-VG holds Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), providing long-term supply continuity and regulatory compliance. The TPC817MA C9G is classified as Obsolete, making the EL817(M)(A))-VG the appropriate replacement for new designs and ongoing production support.

Operating Temperature Consideration: The EL817(M)(A))-VG operating temperature range (-55°C to 110°C) exceeds the TPC817MA C9G specification (-40°C to 100°C), providing extended environmental capability without performance degradation within the original design temperature window.

Timing Characteristics: The EL817(M)(A))-VG exhibits slightly slower rise and fall times (6µs and 8µs respectively) compared to the TPC817MA C9G (4µs and 3µs). This difference is within typical application tolerances for optoisolator switching applications and does not affect functional compatibility in standard isolation circuits.

Frequently Asked Questions (FAQ)

Q: Can the EL817(M)(A))-VG directly replace the TPC817MA C9G without circuit modification?

A: Yes. The EL817(M)(A))-VG is electrically and mechanically equivalent to the TPC817MA C9G across all critical parameters: isolation voltage, current transfer ratio, output voltage and current ratings, saturation voltage, and 4-DIP package configuration. Direct substitution on existing PCBs is supported without design changes.

Q: What is the primary reason for substituting the TPC817MA C9G?

A: The TPC817MA C9G is classified as Obsolete. The EL817(M)(A))-VG is an Active product manufactured by Everlight Electronics Co Ltd, ensuring continued availability, supply chain stability, and long-term production support.

Q: Are there differences in switching speed between these parts?

A: The EL817(M)(A))-VG has slightly slower rise and fall times (6µs and 8µs) compared to the TPC817MA C9G (4µs and 3µs). This difference is typical among optoisolator variants and does not affect compatibility in standard isolation applications. Applications requiring specific timing performance should evaluate this parameter against circuit requirements.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the TPC817MA C9G and EL817(M)(A))-VG are ROHS3 Compliant with MSL 1 (Unlimited) moisture sensitivity level. Both carry EAR99 ECCN classification and HTSUS code 8541.49.8000.

Q: What is the operating temperature range difference?

A: The TPC817MA C9G operates from -40°C to 100°C. The EL817(M)(A))-VG operates from -55°C to 110°C. The substitute part provides extended temperature capability, encompassing the original specification range with additional margin at both extremes.

Q: Is the 4-DIP package identical between both parts?

A: Yes. Both parts use 4-DIP (0.400", 10.16mm) through-hole packaging with identical pin configuration and PCB footprint. No layout modifications are required for substitution.

Q: What is the current transfer ratio specification for both parts?

A: Both the TPC817MA C9G and EL817(M)(A))-VG specify a current transfer ratio of 80% minimum to 160% maximum at 5mA input current. This parameter determines the output current relative to input current and is identical across both parts.

Q: Can the EL817(M)(A))-VG handle the same output current as the TPC817MA C9G?

A: Yes. Both parts are rated for 50mA maximum output current per channel with 80V maximum output voltage and 200mV maximum Vce saturation voltage. Output current capability is equivalent.

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