TPC817S1D RAG Equivalent & Substitute Parts

Part Overview

The TPC817S1D RAG 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-SOP surface mount package. The device is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

TPC817S1D RAG

Taiwan Semiconductor CorporationIn Stock: 952TPC817S1D RAG Datasheet

Current PartRFQ

EL817(S1)(D)(TD)-G

Everlight Electronics Co LtdIn Stock: 895EL817(S1)(D)(TD)-G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPC817S1D RAG is determined by strict equivalence across the following critical parameters:

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

Channel Configuration: Single-channel architecture must be maintained.

Current Transfer Ratio: Range of 300% to 600% @ 5mA defines the optoisolator gain characteristics.

Output Stage: Transistor output configuration is required.

Maximum Output Voltage and Current: 80V maximum output voltage and 50mA per-channel current capacity establish load-driving capability.

Saturation Voltage: 200mV maximum Vce saturation defines output impedance characteristics.

Input Signal Type: DC input operation is specified.

Package Compatibility: 4-SMD surface mount with gull wing leads accommodates the same PCB footprint and assembly process.

Regulatory Compliance: ROHS3 compliance and EAR99 classification ensure regulatory alignment.

The EL817(S1)(D)(TD)-G from Everlight Electronics Co Ltd meets all these substitution criteria while maintaining active product status.

Parameter Comparison

Engineering Selection Recommendations

The EL817(S1)(D)(TD)-G qualifies as a direct substitute for the obsolete TPC817S1D RAG based on electrical and mechanical parameter equivalence. The substitute part maintains identical isolation voltage, current transfer ratio range, output voltage and current specifications, and saturation voltage characteristics. Both components share the same 4-SMD gull wing package footprint and surface mount assembly requirements.

The EL817(S1)(D)(TD)-G offers extended operating temperature range (-55°C to 110°C versus -40°C to 100°C), providing broader thermal operating envelope. The substitute part carries active product status from Everlight Electronics Co Ltd, ensuring ongoing availability and supply chain continuity. Both components maintain ROHS3 compliance and EAR99 classification, satisfying regulatory requirements.

Timing characteristics show minor differences: the substitute exhibits 6µs rise time and 8µs fall time compared to the main part's 4µs and 3µs specifications. Maximum DC forward current is rated at 60mA for the substitute versus 50mA for the main part, indicating enhanced input current capability.

Frequently Asked Questions (FAQ)

Q: Can the EL817(S1)(D)(TD)-G replace the TPC817S1D RAG in existing designs?

A: Yes. Both components share identical isolation voltage (5000Vrms), current transfer ratio range (300-600% @ 5mA), output voltage (80V max), output current (50mA), saturation voltage (200mV), and 4-SMD gull wing package configuration. Electrical and mechanical compatibility is established across all critical parameters.

Q: What are the differences between these two optoisolators?

A: The primary differences are product status and thermal operating range. The TPC817S1D RAG is obsolete with -40°C to 100°C operation, while the EL817(S1)(D)(TD)-G is active with -55°C to 110°C operation. The substitute exhibits slightly slower switching times (6µs/8µs rise/fall versus 4µs/3µs) and higher maximum DC forward current (60mA versus 50mA).

Q: Are both parts qualified for the same applications?

A: Both components are qualified for 5000Vrms galvanic isolation applications with single-channel DC input and transistor output. Identical maximum output voltage and current ratings establish equivalent load-driving capability. Application compatibility is maintained across the specified parameter set.

Q: Does the package footprint remain the same?

A: Yes. Both the TPC817S1D RAG and EL817(S1)(D)(TD)-G use 4-SMD gull wing surface mount packages. PCB footprint and assembly process compatibility is preserved.

Q: Are there regulatory or compliance differences?

A: No. Both components are ROHS3 compliant, carry EAR99 ECCN classification, and maintain MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and compliance status is equivalent.

Q: Which part should be selected for new designs?

A: The EL817(S1)(D)(TD)-G is the appropriate selection for new designs. This component carries active product status, ensuring long-term availability and supply chain support. The extended operating temperature range provides additional design margin for thermal applications.