ISP621-2BLSM Equivalent & Substitute Parts

Part Overview

The ISP621-2BLSM is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This dual-channel device provides 5300Vrms isolation and is designed for applications requiring galvanic isolation with transistor-switched outputs. The part is currently in active production status with 1050 units available in stock. Substitute parts may be required due to inventory constraints, supply chain disruptions, or design flexibility in component sourcing.

Substiute Parts

ISP621-2BLSM

Isocom Components 2004 LTDIn Stock: 1157ISP621-2BLSM Datasheet

Current PartRFQ

ISP621-2XBLSM

Isocom Components 2004 LTDIn Stock: 1062ISP621-2XBLSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The ISP621-2XBLSM is classified as a parametric equivalent to the ISP621-2BLSM. Substitution eligibility is determined by the following critical parameters:

• Number of Channels: 2 (identical)
• Voltage - Isolation: 5300Vrms (identical)
• Current Transfer Ratio: 200% - 600% @ 5mA (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: 8-SMD, Gull Wing (identical)
• Series: ISP621-2 (identical)

All electrical and mechanical parameters match the main part specification, confirming direct substitution capability.

Parameter Comparison

Engineering Selection Recommendations

Both the ISP621-2BLSM and ISP621-2XBLSM are active production parts from the same manufacturer and series. Both parts maintain ROHS3 compliance and identical electrical and mechanical specifications. Selection between these parts may be based on inventory availability, supply chain lead times, or procurement preferences. Both parts are suitable for applications requiring dual-channel optoisolation at 5300Vrms with transistor output switching.

Frequently Asked Questions (FAQ)

Q: Can ISP621-2XBLSM replace ISP621-2BLSM in existing designs? A: Yes. The ISP621-2XBLSM is a parametric equivalent with identical electrical characteristics, isolation voltage, channel count, output specifications, and package configuration. No circuit modifications are required.

Q: Are there differences in isolation voltage between these parts? A: No. Both parts provide 5300Vrms isolation voltage and are rated for identical maximum output voltage of 55V.

Q: Do these parts have the same current transfer ratio performance? A: Yes. Both parts specify a current transfer ratio of 200% minimum to 600% maximum at 5mA input current.

Q: Are the package dimensions and pin configurations identical? A: Yes. Both parts use 8-SMD surface mount packaging with Gull Wing lead configuration, ensuring PCB layout compatibility.

Q: What is the operating temperature range for both parts? A: Both parts operate across -30°C to 100°C, with identical thermal performance specifications.

Q: Are both parts RoHS compliant? A: Yes. Both ISP621-2BLSM and ISP621-2XBLSM are ROHS3 compliant.