IS2705-1 Equivalent & Substitute Parts

Part Overview

The IS2705-1 is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This 4-pin SMD optocoupler provides AC/DC input capability with 3750Vrms isolation voltage and is designed for applications requiring galvanic isolation between input and output circuits. The part is active in production with 45,200 units in stock. Substitute parts are identified based on matching electrical specifications and mechanical compatibility to support procurement flexibility and supply chain continuity.

Substiute Parts

IS2705-1

Isocom Components 2004 LTDIn Stock: 45285IS2705-1 Datasheet

Current PartRFQ

IS126

Isocom Components 2004 LTDIn Stock: 42783IS126 Datasheet

Parametric EquivalentRFQ

HCPL-354-000E

Broadcom LimitedIn Stock: 12556HCPL-354-000E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IS2705-1 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Voltage - Isolation: 3750Vrms (primary isolation specification)
• Number of Channels: 1 (functional requirement)
• Output Type: Transistor (output configuration)
• Current Transfer Ratio: 20% (Min) @ 1mA and 400% (Max) @ 1mA (transfer characteristics)
• Voltage - Output (Max): 35V (output voltage rating)
• Current - Output / Channel: 50mA (output current capability)
• Input Type: AC, DC (input signal compatibility)
• Rise / Fall Time (Typ): 4µs, 3µs (switching speed)
• Operating Temperature: -55°C ~ 100°C (thermal operating range)
• Mounting Type: Surface Mount (assembly compatibility)
• Package / Case: 4-SMD, Gull Wing (physical form factor)
• RoHS Status: ROHS3 Compliant (regulatory compliance)

All identified substitute parts match these parameters exactly, ensuring direct functional and mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

All three parts—IS2705-1, IS126, and HCPL-354-000E—are active products with identical electrical and mechanical specifications. Selection among these parts may be based on:

• Manufacturer availability: IS2705-1 and IS126 are supplied by Isocom Components 2004 LTD; HCPL-354-000E is supplied by Broadcom Limited
• Inventory status: IS2705-1 has 45,200 units in stock; IS126 has 42,700 units; HCPL-354-000E has 12,520 units
• Packaging format: IS2705-1 and IS126 are supplied in Tape & Reel (TR); HCPL-354-000E is supplied in Cut Tape (CT) & Digi-Reel®
• Regulatory compliance: All parts are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99

Frequently Asked Questions (FAQ)

Q: Can IS126 be used as a direct replacement for IS2705-1?

A: Yes. IS126 matches all electrical parameters (isolation voltage, current transfer ratio, output voltage and current ratings, switching speed, and operating temperature) and mechanical specifications (4-SMD Gull Wing package, surface mount). Both are manufactured by Isocom Components 2004 LTD and are ROHS3 compliant.

Q: Can HCPL-354-000E be used as a direct replacement for IS2705-1?

A: Yes. HCPL-354-000E matches all electrical parameters and mechanical specifications. The primary difference is the manufacturer (Broadcom Limited) and packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). The 4-SMD Gull Wing package form factor is identical.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by matching isolation voltage (3750Vrms), number of channels (1), output type (transistor), current transfer ratio range (20% to 400% @ 1mA), maximum output voltage (35V), output current (50mA), input type (AC/DC), switching speed (4µs rise, 3µs fall), operating temperature range (-55°C to 100°C), and physical package (4-SMD Gull Wing surface mount).

Q: Are there any differences in moisture sensitivity or compliance between these parts?

A: No. All three parts have MSL 1 (Unlimited), are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 under ECCN.

Q: Which part should I select based on availability?

A: IS2705-1 has the highest inventory (45,200 units), followed by IS126 (42,700 units) and HCPL-354-000E (12,520 units). Selection should align with procurement lead times and supply chain requirements.