EL817(S2)(A)(TU)-G Optoisolator Equivalent & Substitute Parts

Part Overview

The EL817(S2)(A)(TU)-G is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides galvanic isolation up to 5000Vrms with a single channel configuration in a 4-SMD surface mount package. The part is classified as Active status with 704 units currently in stock as new original inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative packaging formats are required.

Substiute Parts

EL817(S2)(A)(TU)-G

Everlight Electronics Co LtdIn Stock: 805EL817(S2)(A)(TU)-G Datasheet

Current PartRFQ

EL8171S1(TU)-G

Everlight Electronics Co LtdIn Stock: 5131EL8171S1(TU)-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the EL817(S2)(A)(TU)-G are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

Electrical Parameters (Must Match):

• Voltage - Isolation: 5000Vrms
• Number of Channels: 1
• Output Type: Transistor
• Current Transfer Ratio range: 50% (Min) @ 5mA to 600% (Max) @ 5mA
• Voltage - Output (Max): 80V
• Current - Output / Channel: 50mA
• Voltage - Forward (Vf) (Typ): 1.2V
• Current - DC Forward (If) (Max): 60mA
• Vce Saturation (Max): 200mV
• Rise / Fall Time (Typ): 6µs, 8µs
• Operating Temperature: -55°C ~ 110°C
• Input Type: DC

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Package / Case: 4-SMD, Gull Wing
• Supplier Device Package: 4-SMD

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The substitute part EL8171S1(TU)-G meets all electrical and mechanical equivalence criteria. The primary difference is packaging format: the main part is supplied in standard packaging, while the substitute is supplied in Tape & Reel (TR) format. Both parts share the same base product series designation and maintain identical functional specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the EL817(S2)(A)(TU)-G and EL8171S1(TU)-G are Active status products manufactured by Everlight Electronics Co Ltd and maintain full ROHS3 compliance. The electrical and mechanical specifications are identical across all critical parameters including isolation voltage, output characteristics, timing specifications, and operating temperature range.

The selection between these parts should be based on packaging requirements and procurement volume:

EL817(S2)(A)(TU)-G is appropriate for applications requiring standard packaging format with lower volume requirements or when specific packaging specifications mandate non-reel delivery.

EL8171S1(TU)-G is appropriate for high-volume production environments where Tape & Reel (TR) packaging is standard for automated assembly processes. This part number also maintains higher inventory availability (5099 units versus 704 units).

Both parts carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications, ensuring equivalent regulatory and trade compliance status. The MSL rating of 1 (Unlimited) for both parts indicates no moisture sensitivity restrictions during storage and handling.

Frequently Asked Questions (FAQ)

Q: Are EL817(S2)(A)(TU)-G and EL8171S1(TU)-G electrically interchangeable?

A: Yes. Both parts are electrically identical with matching isolation voltage (5000Vrms), current transfer ratio specifications (50% to 600% @ 5mA), output voltage and current ratings, and timing characteristics. They are direct functional equivalents.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. EL817(S2)(A)(TU)-G uses standard packaging, while EL8171S1(TU)-G is supplied in Tape & Reel (TR) format. Both use identical 4-SMD, Gull Wing physical packages suitable for surface mount assembly.

Q: Can I use EL8171S1(TU)-G in place of EL817(S2)(A)(TU)-G on a PCB?

A: Yes. The physical package dimensions and pin configuration are identical (4-SMD, Gull Wing). The component will function identically in the circuit. The only consideration is that Tape & Reel packaging is optimized for automated pick-and-place assembly rather than manual handling.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance status, MSL rating of 1 (Unlimited), ECCN classification (EAR99), and HTSUS code (8541.49.8000). They are equivalent from a regulatory and trade compliance perspective.

Q: Which part should I specify for new designs?

A: Selection depends on manufacturing volume and assembly process. For high-volume automated assembly, EL8171S1(TU)-G in Tape & Reel format is standard. For lower volumes or manual assembly, either part is acceptable. Verify your assembly partner's packaging requirements.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -55°C to 110°C, providing identical thermal performance specifications.

Q: Do both parts have the same isolation voltage rating?

A: Yes. Both parts provide 5000Vrms isolation voltage, meeting identical galvanic isolation requirements.