SFH628A-2 Equivalent & Substitute Parts

Part Overview

The SFH628A-2 is a single-channel optoisolator with transistor output, designed for AC and DC input applications requiring high isolation voltage. Manufactured by Isocom Components 2004 LTD, this 4-DIP through-hole component provides 5300Vrms isolation with a current transfer ratio range of 63% to 200% at 1mA. The part is currently active in production with 1220 units in stock. Substitute parts may be required due to packaging preferences, regional availability, or inventory management considerations.

Substiute Parts

SFH628A-2

Isocom Components 2004 LTDIn Stock: 1246SFH628A-2 Datasheet

Current PartRFQ

SFH628A-2X

Isocom Components 2004 LTDIn Stock: 1162SFH628A-2X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The SFH628A-2X qualifies as a parametric equivalent substitute based on identical electrical and mechanical specifications. Substitution is determined by the following critical parameters:

• Voltage - Isolation: 5300Vrms (identical)
• Current Transfer Ratio: 63% to 200% @ 1mA (identical)
• Output Type: Transistor (identical)
• Voltage - Output (Max): 55V (identical)
• Current - Output / Channel: 50mA (identical)
• Vce Saturation (Max): 400mV (identical)
• Operating Temperature: -30°C ~ 100°C (identical)
• Package / Case: 4-DIP (0.300", 7.62mm) (identical)
• Mounting Type: Through Hole (identical)

The primary difference between the main part and substitute is packaging format: SFH628A-2 is supplied in standard packaging, while SFH628A-2X is supplied in tube packaging. Both parts maintain identical electrical performance and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both SFH628A-2 and SFH628A-2X are active production parts from the same manufacturer with identical electrical specifications and compliance certifications. Selection between these parts should be based on packaging requirements and handling procedures specific to your assembly process. Both parts are ROHS3 compliant, REACH unaffected, and maintain MSL 1 (unlimited) moisture sensitivity rating, ensuring compatibility with standard storage and assembly environments. The tube packaging of the SFH628A-2X may be preferred for automated pick-and-place operations, while standard packaging of the SFH628A-2 may be suitable for manual assembly or mixed-volume applications.

Frequently Asked Questions (FAQ)

Q: Can SFH628A-2X be used as a direct replacement for SFH628A-2?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (tube versus standard). Functional performance in the circuit is identical.

Q: What determines if a part qualifies as a substitute for the SFH628A-2?

A: A substitute must match all critical electrical parameters: isolation voltage (5300Vrms), current transfer ratio range (63-200% @ 1mA), output type (transistor), maximum output voltage (55V), output current (50mA), saturation voltage (400mV), operating temperature range (-30°C to 100°C), and physical package (4-DIP through-hole). Packaging format differences do not affect substitution eligibility.

Q: Are there any compliance or certification differences between these parts?

A: No. Both SFH628A-2 and SFH628A-2X carry identical compliance certifications: ROHS3 compliant, REACH unaffected, and MSL 1 (unlimited).

Q: Does packaging format affect circuit performance?

A: No. Packaging format (standard or tube) affects only handling, storage, and assembly procedures. Electrical and thermal performance remain identical.

Q: What is the current inventory status for these parts?

A: SFH628A-2 has 1220 units in stock. SFH628A-2X has 1086 units in stock. Both are active production parts.