TPC817A C9G Equivalent & Substitute Parts

Part Overview

The TPC817A C9G is an optoisolator with transistor output manufactured by Taiwan Semiconductor Corporation. This component provides galvanic isolation rated at 5000Vrms with a single channel configuration in a 4-DIP package. The device features a current transfer ratio of 80% to 160% at 5mA input and supports output currents up to 50mA with a maximum output voltage of 80V.

The TPC817A C9G is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this optoisolator.

Substiute Parts

TPC817A C9G

Taiwan Semiconductor CorporationIn Stock: 773TPC817A C9G Datasheet

Current PartRFQ

EL817(A)-G

Everlight Electronics Co LtdIn Stock: 743EL817(A)-G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC817A C9G is determined by strict equivalence across the following critical parameters:

Isolation Voltage: 5000Vrms isolation rating is mandatory for functional compatibility.

Channel Configuration: Single channel (1 channel) requirement must be maintained.

Current Transfer Ratio: Operating range of 80% to 160% at 5mA input ensures consistent signal transfer characteristics.

Output Characteristics: Transistor output type with maximum output voltage of 80V and per-channel current capacity of 50mA must be preserved.

Saturation Voltage: Vce saturation maximum of 200mV defines switching performance parameters.

Package Compatibility: 4-DIP (0.300", 7.62mm) through-hole package is required for mechanical and electrical interconnection.

Regulatory Compliance: ROHS3 compliance and MSL 1 rating ensure environmental and handling compatibility.

The EL817(A)-G manufactured by Everlight Electronics Co Ltd meets all these substitution criteria and is classified as an active product.

Parameter Comparison

Engineering Selection Recommendations

The EL817(A)-G is a direct functional substitute for the TPC817A C9G based on electrical and mechanical parameter equivalence. Both components share identical isolation voltage ratings, channel configuration, current transfer ratio specifications, output voltage and current ratings, and saturation voltage characteristics. Both are packaged in 4-DIP through-hole format and comply with ROHS3 environmental standards with MSL 1 moisture sensitivity ratings.

The EL817(A)-G offers advantages in supply chain continuity as an active product with current manufacturing status, compared to the obsolete TPC817A C9G. The substitute component provides an extended operating temperature range (-55°C to 110°C versus -40°C to 100°C) and higher maximum forward current rating (60mA versus 50mA), which represent performance enhancements for thermal and current margin considerations.

The EL817(A)-G exhibits slightly slower rise and fall times (6µs and 8µs respectively) compared to the TPC817A C9G (4µs and 3µs respectively). This timing difference must be evaluated within the context of specific application switching frequency requirements and signal integrity specifications.

Frequently Asked Questions (FAQ)

Q: Can the EL817(A)-G be used as a direct replacement for the TPC817A C9G in existing designs?

A: The EL817(A)-G meets all critical electrical and mechanical parameters required for substitution. Both components feature 5000Vrms isolation, identical current transfer ratios, equivalent output voltage and current ratings, and identical 4-DIP package dimensions. Direct pin-compatible substitution is supported from a hardware perspective. Application-specific timing requirements must be evaluated due to differences in rise and fall time specifications.

Q: What are the key differences between these two optoisolators?

A: The primary differences are: (1) Product status—EL817(A)-G is active while TPC817A C9G is obsolete; (2) Operating temperature range—EL817(A)-G supports -55°C to 110°C versus -40°C to 100°C; (3) Maximum forward current—EL817(A)-G rated at 60mA versus 50mA; (4) Rise and fall times—EL817(A)-G exhibits 6µs and 8µs versus 4µs and 3µs. All other electrical and mechanical specifications are equivalent.

Q: Are there any package or mounting considerations when substituting these parts?

A: Both components utilize identical 4-DIP (0.300", 7.62mm) through-hole packaging and mounting type. No PCB layout modifications or mechanical redesign is required for substitution. Both components maintain MSL 1 moisture sensitivity classification, requiring identical handling and storage protocols.

Q: How do the timing specifications affect circuit performance?

A: The EL817(A)-G exhibits slower rise and fall times (6µs and 8µs) compared to the TPC817A C9G (4µs and 3µs). This timing difference impacts switching speed and may affect applications with high-frequency signal requirements. Circuit designs operating at frequencies where the 2-5µs timing difference is not critical will experience no functional impact. Applications with stringent timing requirements must verify compatibility with the substitute component's timing characteristics.

Q: Are both components compliant with current environmental and regulatory standards?

A: Both the TPC817A C9G and EL817(A)-G are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. Both components meet current environmental and regulatory requirements for electronic component manufacturing and use.