TLP621BLG Equivalent & Substitute Parts

Part Overview

The TLP621BLG is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This single-channel device provides galvanic isolation rated at 5300Vrms in a 4-DIP through-hole package. The component is currently active in production with 725 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter range, enabling seamless integration in applications requiring isolated signal switching or logic level translation.

Substiute Parts

TLP621BLG

Isocom Components 2004 LTDIn Stock: 798TLP621BLG Datasheet

Current PartRFQ

ISP621-1XBLG

Isocom Components 2004 LTDIn Stock: 908ISP621-1XBLG Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLP621BLG is determined by strict equivalence across the following critical parameters:

• Isolation voltage: 5300Vrms minimum
• Number of channels: 1 channel
• Output type: Transistor output
• Current transfer ratio range: 200% to 600% @ 5mA
• Maximum output voltage: 55V
• Maximum output current: 50mA per channel
• Vce saturation: 400mV maximum
• Operating temperature range: -30°C to 100°C
• Package type: 4-DIP through-hole
• Compliance: ROHS3 Compliant, REACH Unaffected

The ISP621-1XBLG meets all specified electrical and mechanical parameters, confirming direct substitution capability within the same application context.

Parameter Comparison

Engineering Selection Recommendations

Both the TLP621BLG and ISP621-1XBLG are active production components manufactured by Isocom Components 2004 LTD with identical compliance certifications (ROHS3 Compliant, REACH Unaffected). Selection between these parts is based on inventory availability and supply chain considerations. The TLP621BLG currently maintains 725 units in stock, while the ISP621-1XBLG has 832 units available. Both components satisfy all electrical performance requirements and mechanical compatibility specifications for through-hole PCB assembly applications requiring single-channel galvanic isolation at 5300Vrms.

Frequently Asked Questions (FAQ)

Q: Can ISP621-1XBLG replace TLP621BLG in existing designs?

A: Yes. Both components share identical electrical specifications across isolation voltage, current transfer ratio, output voltage and current ratings, saturation voltage, and operating temperature range. The 4-DIP through-hole package dimensions are equivalent, enabling direct PCB footprint compatibility.

Q: Are there differences in switching speed between these parts?

A: The TLP621BLG specifies turn-on and turn-off times of 3µs typical with rise and fall times of 2µs and 3µs respectively. The ISP621-1XBLG does not specify turn-on and turn-off times but lists rise and fall times of 4µs and 3µs. Applications with strict timing requirements should evaluate this parameter difference.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the TLP621BLG and ISP621-1XBLG are ROHS3 Compliant and REACH Unaffected, with identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications.

Q: What is the moisture sensitivity level for these components?

A: Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Are these components suitable for high-voltage isolation applications?

A: Yes. Both components provide 5300Vrms isolation voltage, suitable for applications requiring galvanic isolation between circuits operating at different potential levels or in high-noise industrial environments.