TPC817MB C9G Equivalent & Substitute Parts

Part Overview

The TPC817MB C9G is a 5000Vrms optoisolator with transistor output manufactured by Taiwan Semiconductor Corporation. This component provides galvanic isolation for single-channel DC input applications with a 4-DIP through-hole package. The part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical compatibility across isolation voltage, current transfer ratio, output characteristics, and thermal operating range.

Substiute Parts

TPC817MB C9G

Taiwan Semiconductor CorporationIn Stock: 824TPC817MB C9G Datasheet

Current PartRFQ

EL817(M)(B))-VG

Everlight Electronics Co LtdIn Stock: 919EL817(M)(B))-VG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC817MB C9G is determined by strict equivalence across the following critical parameters:

Isolation Voltage: Both the main part and substitute must provide 5000Vrms isolation to maintain system safety and regulatory compliance.

Channel Configuration: Single-channel operation is required; multi-channel variants are not interchangeable.

Current Transfer Ratio: The substitute must support the 130% to 260% @ 5mA range to ensure consistent LED drive and output switching characteristics.

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

Saturation Voltage: Maximum Vce saturation of 200mV ensures compatible switching performance in the application circuit.

Package and Mounting: 4-DIP through-hole package with 0.400" (10.16mm) spacing is required for PCB compatibility.

Input Type: DC input operation must be preserved.

The EL817(M)(B))-VG from Everlight Electronics Co Ltd meets all these criteria and is classified as an active product, providing long-term availability and supply chain stability compared to the obsolete TPC817MB C9G.

Parameter Comparison

Engineering Selection Recommendations

The EL817(M)(B))-VG is the primary substitute for the obsolete TPC817MB C9G based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match exactly, including isolation voltage, current transfer ratio range, output voltage and current limits, and saturation voltage. These parameters determine functional compatibility in the application circuit.

Compliance and Certification: Both parts maintain ROHS3 compliance and identical moisture sensitivity levels (MSL 1 - Unlimited), ensuring equivalent environmental and regulatory standing.

Product Status: The EL817(M)(B))-VG is classified as active, providing assured long-term availability and supply chain continuity. The TPC817MB C9G is obsolete and subject to inventory depletion.

Thermal Operating Range: The EL817(M)(B))-VG supports an extended operating temperature range of -55°C to 110°C compared to the TPC817MB C9G range of -40°C to 100°C. This provides additional thermal margin for demanding applications.

Switching Characteristics: The EL817(M)(B))-VG exhibits slightly slower rise and fall times (6µs and 8µs respectively) compared to the TPC817MB C9G (4µs and 3µs). Applications with timing-critical switching requirements must evaluate whether this difference affects circuit performance.

Package Compatibility: Both parts use identical 4-DIP through-hole packaging, enabling direct PCB substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the EL817(M)(B))-VG be used as a direct replacement for the TPC817MB C9G?

A: Yes. The EL817(M)(B))-VG meets all electrical and mechanical specifications required for direct substitution. Both parts provide 5000Vrms isolation, identical current transfer ratios, equivalent output characteristics, and the same 4-DIP through-hole package. No circuit modifications are required.

Q: What is the primary reason to substitute the TPC817MB C9G?

A: The TPC817MB C9G is classified as obsolete. The EL817(M)(B))-VG is an active product from Everlight Electronics, ensuring continued availability and supply chain stability for new designs and production support.

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

A: Yes. The TPC817MB C9G has rise and fall times of 4µs and 3µs respectively, while the EL817(M)(B))-VG has rise and fall times of 6µs and 8µs. For applications where switching speed is critical, this difference must be evaluated against circuit timing requirements.

Q: Do both parts support the same operating temperature range?

A: No. The TPC817MB C9G operates from -40°C to 100°C, while the EL817(M)(B))-VG operates from -55°C to 110°C. The substitute part provides extended thermal range, which is beneficial for applications in extreme temperature environments.

Q: Are the packages physically identical?

A: Yes. Both parts use a 4-DIP package with 0.400" (10.16mm) spacing. The parts are mechanically interchangeable on through-hole PCBs without layout changes.

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

A: Yes. Both the TPC817MB C9G and EL817(M)(B))-VG are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity levels. They meet equivalent environmental and regulatory requirements.

Q: What are the critical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: isolation voltage (5000Vrms), number of channels (1), current transfer ratio range (130% to 260% @ 5mA), output type (transistor), maximum output voltage (80V), per-channel output current (50mA), maximum saturation voltage (200mV), input type (DC), package type (4-DIP through-hole), and mounting configuration. All these parameters must match between the original and substitute part.

Q: Can the EL817(M)(B))-VG be used in applications requiring the faster switching speed of the TPC817MB C9G?

A: Applications with timing-critical requirements must evaluate the switching time difference. The EL817(M)(B))-VG has slower rise and fall times (6µs and 8µs) compared to the TPC817MB C9G (4µs and 3µs). Circuit simulation or testing may be necessary to confirm compatibility in high-speed switching applications.