TLP621-2 Equivalent & Substitute Parts

Part Overview

The TLP621-2 is a dual-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This component provides galvanic isolation up to 5300Vrms across two independent channels in an 8-DIP package. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across isolation voltage, channel configuration, output type, and package form factor.

Substiute Parts

TLP621-2

Isocom Components 2004 LTDIn Stock: 1475TLP621-2 Datasheet

Current PartRFQ

ISP521-2X

Isocom Components 2004 LTDIn Stock: 1330ISP521-2X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLP621-2 is determined by strict equivalence across the following parameters:

• Number of Channels: 2 channels required
• Voltage - Isolation: 5300Vrms minimum
• Output Type: Transistor output configuration
• Package / Case: 8-DIP (0.300", 7.62mm) form factor
• Mounting Type: Through Hole
• Current Transfer Ratio range: 50% to 600% @ 5mA
• Voltage - Output (Max): 55V
• Current - Output / Channel: 50mA
• Operating Temperature range: -30°C ~ 100°C
• RoHS Status: ROHS3 Compliant

The ISP521-2X meets all substitution criteria as a parametric equivalent within the allowed electrical and mechanical specifications for this optoisolator category.

Parameter Comparison

Engineering Selection Recommendations

The ISP521-2X qualifies as a direct parametric equivalent to the TLP621-2 based on Active product status for both components and full compliance with RoHS3 and REACH regulations. Both parts maintain identical isolation voltage, channel configuration, output specifications, and package form factor. The ISP521-2X is available in Tube packaging with 1227 units in stock, compared to the TLP621-2 standard packaging with 1402 units in stock. Selection between these parts should be based on packaging availability, inventory requirements, and lead time considerations. Both components are suitable for applications requiring dual-channel galvanic isolation at 5300Vrms with transistor output in through-hole 8-DIP configuration.

Frequently Asked Questions (FAQ)

Q: Can ISP521-2X replace TLP621-2 in existing designs?

A: Yes. The ISP521-2X meets all electrical and mechanical substitution criteria. Both parts share identical isolation voltage (5300Vrms), channel count (2), output type (transistor), package form factor (8-DIP), and operating temperature range (-30°C ~ 100°C). PCB layout and footprint compatibility are maintained.

Q: What are the differences between TLP621-2 and ISP521-2X?

A: The primary differences are packaging format (standard vs. Tube) and minor timing parameter documentation. Rise/Fall time specifications show variance (2µs/3µs vs. 4µs/3µs), and Turn On/Turn Off time is not specified for ISP521-2X. These variations do not affect substitution eligibility within the allowed parameter ranges for this optoisolator category.

Q: Are both parts RoHS3 compliant?

A: Yes. Both TLP621-2 and ISP521-2X are ROHS3 Compliant with REACH Unaffected status and Moisture Sensitivity Level 1 (Unlimited).

Q: What is the maximum isolation voltage for these parts?

A: Both parts provide 5300Vrms galvanic isolation across two independent channels.

Q: Can these parts be used interchangeably in high-speed switching applications?

A: Both parts support the specified current transfer ratio range (50% to 600% @ 5mA) and output specifications (55V maximum, 50mA per channel). Application suitability depends on specific timing requirements and circuit design parameters beyond the scope of this substitution reference.