ISP621-2BL Equivalent & Substitute Parts

Part Overview

The ISP621-2BL is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation between input and output circuits with a 5300Vrms isolation voltage rating across two independent channels in an 8-DIP package. The part is currently in active production status with 908 units available in inventory. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series and package configuration.

Substiute Parts

ISP621-2BL

Isocom Components 2004 LTDIn Stock: 929ISP621-2BL Datasheet

Current PartRFQ

ISP621-2XBL

Isocom Components 2004 LTDIn Stock: 944ISP621-2XBL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISP621-2BL is determined by strict equivalence across the following critical parameters:

• Number of Channels: 2
• Voltage - Isolation: 5300Vrms
• Current Transfer Ratio range: 200% (Min) to 600% (Max) @ 5mA
• Output Type: Transistor
• Voltage - Output (Max): 55V
• Current - Output / Channel: 50mA
• Vce Saturation (Max): 400mV
• Operating Temperature range: -30°C ~ 100°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Series: ISP621-2

The ISP621-2XBL meets all substitution criteria as a parametric equivalent within the ISP621-2 series, maintaining identical electrical specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both ISP621-2BL and ISP621-2XBL are active production components from Isocom Components 2004 LTD with identical electrical and mechanical specifications. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Selection between these parts may be based on inventory availability, lead time, or supplier preference, as all functional parameters are equivalent. The ISP621-2BL currently has 908 units in stock, while the ISP621-2XBL has 900 units available.

Frequently Asked Questions (FAQ)

Q: Can ISP621-2XBL be used as a direct replacement for ISP621-2BL?

A: Yes. The ISP621-2XBL is a parametric equivalent with identical isolation voltage (5300Vrms), channel count (2), current transfer ratio range (200%-600% @ 5mA), output specifications (55V max, 50mA per channel), and package configuration (8-DIP through-hole). All electrical and mechanical parameters match exactly.

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

A: No. Both parts carry identical RoHS3 compliance status and REACH unaffected designation. Both are rated for the same operating temperature range (-30°C ~ 100°C) and moisture sensitivity level (MSL 1 - Unlimited).

Q: What determines substitution eligibility for ISP621-2 series optoisolators?

A: Substitution is based on matching the following parameters: isolation voltage (5300Vrms), number of channels (2), current transfer ratio specifications (200%-600% @ 5mA), output type (transistor), maximum output voltage (55V), output current per channel (50mA), saturation voltage (400mV max), operating temperature range (-30°C ~ 100°C), and package type (8-DIP through-hole).

Q: Can parts from different manufacturers substitute for the ISP621-2BL?

A: Substitution eligibility is limited to parts within the ISP621-2 series from Isocom Components 2004 LTD that maintain all specified electrical and mechanical parameters. Cross-manufacturer substitution requires verification of equivalent parametric specifications.

Q: Are there any inventory or lead time considerations?

A: The ISP621-2BL has 908 units in stock, while the ISP621-2XBL has 900 units available. Both are active production parts with equivalent availability status.