TPC817B C9G Equivalent & Substitute Parts

Part Overview

The TPC817B 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 product is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

TPC817B C9G

Taiwan Semiconductor CorporationIn Stock: 1323TPC817B C9G Datasheet

Current PartRFQ

EL817(B)-G

Everlight Electronics Co LtdIn Stock: 1033EL817(B)-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC817B C9G is determined by strict equivalence across the following critical parameters:

Isolation Voltage: 5000Vrms isolation rating is the primary substitution criterion. All substitute parts must maintain this isolation specification.

Package Configuration: 4-DIP through-hole package with 0.300" (7.62mm) spacing ensures mechanical and electrical compatibility with existing PCB layouts.

Output Characteristics: Transistor output type with 80V maximum output voltage and 50mA per-channel current capacity defines the functional output stage.

Current Transfer Ratio: Minimum 130% and maximum 260% at 5mA input current establishes the gain characteristics for signal transfer across the isolation barrier.

Saturation Voltage: 200mV maximum Vce saturation ensures consistent switching performance.

Compliance Requirements: ROHS3 compliance and EAR99 ECCN classification must be maintained for regulatory and export control adherence.

The EL817(B)-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(B)-G is a direct functional equivalent to the TPC817B C9G for applications requiring 5000Vrms optoisolation with transistor output in a 4-DIP package. Both components maintain ROHS3 compliance and EAR99 classification.

Product Status Advantage: The EL817(B)-G is classified as an active product with current manufacturing and supply availability, whereas the TPC817B C9G is obsolete. This status difference supports long-term design continuity and procurement reliability.

Operating Temperature Range: The EL817(B)-G provides an extended operating temperature range of -55°C to 110°C compared to the TPC817B C9G range of -40°C to 100°C. This extended range accommodates broader environmental specifications without functional compromise.

Switching Performance: The EL817(B)-G exhibits slower rise and fall times (6µs and 8µs respectively) compared to the TPC817B C9G (4µs and 3µs). Applications with timing-critical switching requirements must account for this performance difference.

Forward Current Rating: The EL817(B)-G supports a maximum DC forward current of 60mA compared to 50mA for the TPC817B C9G, providing additional input current margin.

All other electrical and mechanical parameters are equivalent between the two components, supporting direct substitution in existing designs without PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can the EL817(B)-G replace the TPC817B C9G in existing designs?

A: Yes. The EL817(B)-G meets all critical substitution parameters including 5000Vrms isolation voltage, 1-channel transistor output, 4-DIP package configuration, and equivalent current transfer ratio specifications. No PCB layout changes are required.

Q: What is the primary reason for substitution?

A: The TPC817B C9G is classified as obsolete. The EL817(B)-G is an active product with current manufacturing support, ensuring procurement continuity and long-term availability.

Q: Are there timing differences between these components?

A: Yes. The EL817(B)-G has slower rise and fall times (6µs and 8µs) compared to the TPC817B C9G (4µs and 3µs). Applications with timing-critical switching requirements must evaluate whether this performance difference affects circuit operation.

Q: Do both components meet the same compliance standards?

A: Yes. Both the TPC817B C9G and EL817(B)-G are ROHS3 compliant and classified as EAR99 for export control purposes.

Q: What is the operating temperature difference?

A: The EL817(B)-G operates from -55°C to 110°C, providing a wider temperature range than the TPC817B C9G (-40°C to 100°C). This extended range supports applications in more demanding thermal environments.

Q: Are the package dimensions identical?

A: Yes. Both components use a 4-DIP package with 0.300" (7.62mm) spacing, ensuring identical PCB footprint and through-hole mounting compatibility.

Q: What is the maximum output current for each component?

A: Both components support 50mA maximum output current per channel. The EL817(B)-G supports a higher maximum DC forward input current of 60mA compared to 50mA for the TPC817B C9G.