TLP521-2BLSM Equivalent & Substitute Parts

Part Overview

The TLP521-2BLSM is a dual-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This surface-mount component provides galvanic isolation up to 5300Vrms and is designed for applications requiring electrical isolation between input and output circuits. The part is currently in active production status with 1073 units available in stock. Substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and regulatory compliance to support procurement flexibility and supply chain continuity.

Substiute Parts

TLP521-2BLSM

Isocom Components 2004 LTDIn Stock: 1099TLP521-2BLSM Datasheet

Current PartRFQ

ISP521-2XBLSM

Isocom Components 2004 LTDIn Stock: 1296ISP521-2XBLSM Datasheet

Parametric EquivalentRFQ

TLP521-2XBLSM

Isocom Components 2004 LTDIn Stock: 1021TLP521-2XBLSM Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLP521-2BLSM are qualified based on the following critical parameters that determine functional and mechanical interchangeability:

• Number of Channels: 2 channels (dual configuration)
• Voltage - Isolation: 5300Vrms minimum
• Current Transfer Ratio: 200% minimum @ 1mA
• Output Type: Transistor output
• Voltage - Output (Max): 55V
• Current - Output / Channel: 50mA
• Package / Case: 8-SMD, Gull Wing
• Operating Temperature Range: -30°C ~ 100°C
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

The identified substitutes maintain these electrical and mechanical specifications, ensuring compatibility in applications designed for the TLP521-2BLSM.

Parameter Comparison

Engineering Selection Recommendations

All three parts—TLP521-2BLSM, ISP521-2XBLSM, and TLP521-2XBLSM—are manufactured by Isocom Components 2004 LTD and maintain active product status. Each part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

The TLP521-2BLSM and TLP521-2XBLSM share identical timing specifications (Turn On / Turn Off Time: 3µs, 3µs), making them functionally equivalent for applications with strict timing requirements. The ISP521-2XBLSM does not specify Turn On / Turn Off Time but maintains all other critical electrical parameters, including rise and fall times.

Selection between these parts should be based on availability, supply chain requirements, and application-specific timing constraints. All three parts are suitable for direct substitution in designs requiring dual-channel optoisolation at 5300Vrms with transistor output in 8-SMD surface-mount packages.

Frequently Asked Questions (FAQ)

Q: Can ISP521-2XBLSM replace TLP521-2BLSM in all applications?

A: ISP521-2XBLSM is electrically equivalent to TLP521-2BLSM for all specified parameters except Turn On / Turn Off Time, which is not provided for the ISP521-2XBLSM. Applications with timing-critical requirements should use TLP521-2BLSM or TLP521-2XBLSM.

Q: Are all substitute parts pin-compatible?

A: Yes. All parts use the same 8-SMD, Gull Wing package configuration and are mechanically compatible for surface-mount assembly.

Q: What is the difference between TLP521-2BLSM and TLP521-2XBLSM?

A: Both parts are from the same TLP521-2 series and share identical electrical specifications and timing characteristics. The difference lies in part designation and inventory availability.

Q: Do all parts meet the same regulatory standards?

A: Yes. All three parts are ROHS3 compliant, REACH unaffected, and carry the same EAR99 ECCN classification.

Q: Which part should be selected for new designs?

A: Selection should be based on current inventory availability and supply chain strategy. All parts are active products suitable for new designs requiring dual-channel optoisolation at 5300Vrms.