TLP621-2SMT&R Equivalent & Substitute Parts

Part Overview

The TLP621-2SMT&R is a dual-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This surface-mount component provides 5300Vrms isolation voltage and is designed for applications requiring galvanic isolation between input and output circuits. The part is currently active in production with 1105 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling design flexibility and supply chain continuity.

Substiute Parts

TLP621-2SMT&R

Isocom Components 2004 LTDIn Stock: 1138TLP621-2SMT&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 TLP621-2SMT&R are qualified based on the following critical parameters that define functional equivalence:

• Number of Channels: 2 channels (dual configuration)
• Voltage - Isolation: 5300Vrms minimum
• Current Transfer Ratio: 50% (Min) @ 5mA and 600% (Max) @ 5mA
• 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
• Compliance: ROHS3 Compliant, REACH Unaffected

All substitute parts maintain these electrical and mechanical specifications, ensuring direct functional compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active product status with Isocom Components 2004 LTD and comply with ROHS3 and REACH requirements. Selection between the TLP621-2SMT&R and its substitutes should be based on:

Timing Characteristics: The TLP621-2SMT&R and TLP521-2XSMT&R specify Turn On / Turn Off Time of 3µs, 3µs (typical), while ISP521-2XSMT&R, ISP621-2XGRSMT&R, and ISP621-2XSMT&R do not provide this specification. For applications with strict timing requirements, TLP621-2SMT&R or TLP521-2XSMT&R are preferred.

Rise / Fall Time: The TLP621-2SMT&R specifies 2µs, 3µs (typical), while all substitute parts specify 4µs, 3µs (typical). Applications sensitive to output edge rates should account for this difference.

Inventory Availability: ISP521-2XSMT&R (2112 units), ISP621-2XSMT&R (2140 units), and TLP521-2XSMT&R (2087 units) offer higher stock levels than the primary part (1105 units).

All parts are qualified for the full operating temperature range of -30°C to 100°C and support identical electrical specifications for isolation voltage, current transfer ratio, output voltage, and output current.

Frequently Asked Questions (FAQ)

Q: Can ISP521-2XSMT&R be used as a direct replacement for TLP621-2SMT&R?

A: ISP521-2XSMT&R is electrically equivalent across all critical parameters including isolation voltage (5300Vrms), current transfer ratio (50% to 600% @ 5mA), output voltage (55V max), and output current (50mA per channel). The primary difference is that ISP521-2XSMT&R does not specify Turn On / Turn Off Time. For applications where this timing specification is not critical, ISP521-2XSMT&R is functionally compatible.

Q: What is the difference between ISP621-2XSMT&R and ISP621-2XGRSMT&R?

A: Both parts are from the ISP621-2 series with identical electrical and mechanical specifications. The designation difference (XSMT&R versus XGRSMT&R) reflects packaging or supplier variants. Both maintain the same 8-SMD, Gull Wing package configuration and are functionally equivalent.

Q: Are all substitute parts in the same package?

A: All substitute parts use the 8-SMD, Gull Wing package configuration, identical to the TLP621-2SMT&R. All are surface-mount components with the same pin configuration and footprint compatibility.

Q: Which substitute part has the fastest switching speed?

A: TLP621-2SMT&R and TLP521-2XSMT&R both specify Turn On / Turn Off Time of 3µs (typical). ISP521-2XSMT&R, ISP621-2XGRSMT&R, and ISP621-2XSMT&R do not provide this specification. For Rise / Fall Time, TLP621-2SMT&R specifies 2µs (rise) and 3µs (fall), while all substitutes specify 4µs (rise) and 3µs (fall).

Q: Do all parts meet current environmental compliance standards?

A: All parts are ROHS3 Compliant and REACH Unaffected. All carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: Can I mix different substitute parts in the same design?

A: All substitute parts maintain identical electrical specifications for the critical parameters that define optoisolator function: isolation voltage, current transfer ratio, output voltage, output current, and operating temperature range. They are mechanically identical in package and pin configuration. Mixing parts is permissible from a functional standpoint, though design documentation should reflect the specific part numbers used.