ISP621-1BLSMT&R Equivalent & Substitute Parts

Part Overview

The ISP621-1BLSMT&R is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This single-channel device provides 5300Vrms isolation voltage in a 4-SMD surface mount package. The part is currently active in production with 809 units in stock. Substitute parts are identified when electrical and mechanical parameters remain within the specified tolerances, enabling seamless integration into existing designs without circuit modification.

Substiute Parts

ISP621-1BLSMT&R

Isocom Components 2004 LTDIn Stock: 869ISP621-1BLSMT&R Datasheet

Current PartRFQ

ISP621-1XBLSMT&R

Isocom Components 2004 LTDIn Stock: 1778ISP621-1XBLSMT&R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ISP621-1BLSMT&R is determined by strict equivalence across the following critical parameters:

• Voltage - Isolation: 5300Vrms
• Number of Channels: 1
• Current Transfer Ratio range: 200% to 600% @ 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: 4-SMD, Gull Wing
• Mounting Type: Surface Mount

The ISP621-1XBLSMT&R meets all substitution criteria as a parametric equivalent within the ISP621-1 series.

Parameter Comparison

Engineering Selection Recommendations

Both the ISP621-1BLSMT&R and ISP621-1XBLSMT&R are active production parts manufactured by Isocom Components 2004 LTD. Both parts maintain ROHS3 compliance and REACH unaffected status. The ISP621-1XBLSMT&R carries higher inventory availability (1743 units) compared to the ISP621-1BLSMT&R (809 units). Selection between these parts depends on supply chain requirements and lead time considerations, as electrical and mechanical specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can ISP621-1XBLSMT&R replace ISP621-1BLSMT&R in existing designs?

A: Yes. Both parts are parametric equivalents within the ISP621-1 series with identical electrical characteristics, isolation voltage, 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 with identical current transfer ratio specifications (200% to 600% @ 5mA).

Q: Do these parts use the same package?

A: Yes. Both parts use 4-SMD, Gull Wing surface mount packaging with identical mechanical dimensions and pin configuration.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: Are there inventory or availability differences?

A: The ISP621-1XBLSMT&R has higher current stock availability (1743 units) versus the ISP621-1BLSMT&R (809 units). Both parts are active in production.