TLP621-2BLSMT&R Equivalent & Substitute Parts

Part Overview

The TLP621-2BLSMT&R is a dual-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides 5300Vrms isolation voltage in an 8-SMD surface mount package, designed for applications requiring galvanic isolation between input and output circuits. The part is currently active in production with 804 units in stock. Substitute parts are identified based on matching electrical specifications, isolation ratings, package configuration, and compliance certifications to ensure functional equivalence in circuit applications.

Substiute Parts

TLP621-2BLSMT&R

Isocom Components 2004 LTDIn Stock: 875TLP621-2BLSMT&R Datasheet

Current PartRFQ

ISP521-2XSMT&R

Isocom Components 2004 LTDIn Stock: 2206ISP521-2XSMT&R Datasheet

Parametric EquivalentRFQ

ISP621-2XGRSMT&R

Isocom Components 2004 LTDIn Stock: 1824ISP621-2XGRSMT&R Datasheet

Parametric EquivalentRFQ

ISP621-2XSMT&R

Isocom Components 2004 LTDIn Stock: 2236ISP621-2XSMT&R Datasheet

Parametric EquivalentRFQ

TLP521-2XSMT&R

Isocom Components 2004 LTDIn Stock: 2166TLP521-2XSMT&R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLP621-2BLSMT&R are qualified based on the following critical parameters that determine functional equivalence:

• Isolation Voltage: All substitutes maintain 5300Vrms isolation rating
• Number of Channels: All substitutes provide dual-channel (2-channel) configuration
• Output Type: All substitutes feature transistor output topology
• Maximum Output Voltage: All substitutes support 55V maximum output voltage
• Maximum Output Current: All substitutes deliver 50mA per channel
• Current Transfer Ratio Range: All substitutes operate within 50% to 600% @ 5mA
• Package Configuration: All substitutes use 8-SMD, Gull Wing surface mount package
• Operating Temperature: All substitutes support -30°C ~ 100°C range
• Compliance: All substitutes maintain ROHS3 compliance and MSL Level 1

The identified substitutes represent parametric equivalents from the same manufacturer with identical electrical performance specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and full compliance with ROHS3 and REACH regulations. Selection between the TLP621-2BLSMT&R and its substitutes should be based on the following factors:

Timing Characteristics: The TLP621-2BLSMT&R and TLP521-2XSMT&R both specify turn-on and turn-off times of 3µs with rise and fall times of 2µs and 3µs respectively. The ISP series parts (ISP521-2XSMT&R, ISP621-2XGRSMT&R, ISP621-2XSMT&R) do not specify turn-on/turn-off times but provide rise and fall times of 4µs and 3µs. Applications with strict timing requirements should prioritize parts with specified switching times.

Inventory Availability: The TLP621-2BLSMT&R has 804 units in stock. Substitute parts offer higher inventory levels: ISP521-2XSMT&R (2112 units), ISP621-2XGRSMT&R (1730 units), ISP621-2XSMT&R (2140 units), and TLP521-2XSMT&R (2087 units).

Series Designation: Parts are available from three series: TLP621-2, ISP521-2, ISP621-2, and TLP521-2. All maintain identical electrical and mechanical specifications within the parameters provided.

Frequently Asked Questions (FAQ)

Q: Can ISP521-2XSMT&R replace TLP621-2BLSMT&R in my circuit?

A: Yes. Both parts share identical isolation voltage (5300Vrms), channel count (2), output type (transistor), maximum output voltage (55V), maximum output current (50mA per channel), current transfer ratio range (50-600% @ 5mA), package configuration (8-SMD, Gull Wing), and operating temperature range (-30°C ~ 100°C). The primary difference is that ISP521-2XSMT&R does not specify turn-on/turn-off times, while TLP621-2BLSMT&R specifies 3µs for both parameters.

Q: What is the difference between TLP621-2BLSMT&R and TLP521-2XSMT&R?

A: Both parts belong to different series (TLP621-2 versus TLP521-2) but share identical electrical specifications and package configuration. Both specify turn-on/turn-off times of 3µs. The primary distinction is series designation; all other parameters are equivalent.

Q: Are all substitute parts in the same package?

A: Yes. All parts use 8-SMD, Gull Wing surface mount package with identical pin configuration and footprint compatibility.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All parts are ROHS3 compliant, MSL Level 1 (Unlimited), REACH Unaffected, with ECCN classification EAR99 and HTSUS code 8541.49.8000.

Q: Which substitute part should I choose if timing is critical?

A: If turn-on/turn-off time specifications are required, select either TLP621-2BLSMT&R or TLP521-2XSMT&R, both specifying 3µs switching times. The ISP series parts do not provide turn-on/turn-off time specifications.

Q: Can I use these parts interchangeably on the same PCB?

A: Yes. All parts share identical 8-SMD, Gull Wing package dimensions and pin assignments, allowing direct substitution without PCB redesign.