TLP521GR Equivalent & Substitute Parts

Part Overview

The TLP521GR is a single-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This 4-DIP through-hole component provides galvanic isolation up to 5300Vrms and is designed for applications requiring DC input signal isolation with transistor-based output switching. The part is currently active in production with 3718 units in stock. Substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and compliance certifications to ensure direct interchangeability in circuit designs.

Substiute Parts

TLP521GR

Isocom Components 2004 LTDIn Stock: 3815TLP521GR Datasheet

Current PartRFQ

TLP521-1XGR

Isocom Components 2004 LTDIn Stock: 1269TLP521-1XGR Datasheet

Parametric EquivalentRFQ

TLP521XGR

Isocom Components 2004 LTDIn Stock: 1092TLP521XGR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLP521GR are identified as parametric equivalents based on the following critical parameters that determine interchangeability:

• Isolation Voltage: 5300Vrms (all substitutes match)
• Number of Channels: 1 (all substitutes match)
• Output Type: Transistor (all substitutes match)
• Current Transfer Ratio Range: 100% - 300% @ 1mA (all substitutes match)
• Maximum Output Voltage: 55V (all substitutes match)
• Maximum Output Current: 50mA (all substitutes match)
• Package Type: 4-DIP (0.300", 7.62mm) (all substitutes match)
• Mounting Type: Through Hole (all substitutes match)
• Operating Temperature Range: -30°C ~ 100°C (all substitutes match)

All identified substitutes maintain identical electrical performance specifications and mechanical compatibility, enabling direct replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—TLP521GR, TLP521-1XGR, and TLP521XGR—are active products from Isocom Components 2004 LTD with identical electrical specifications and mechanical packaging. Each part is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Selection between these parts should be based on availability and supply chain considerations, as all three provide equivalent performance in isolation, switching speed, output current capacity, and operating temperature range. The TLP521GR maintains the highest inventory level at 3718 units, followed by TLP521-1XGR at 1199 units and TLP521XGR at 1078 units.

Frequently Asked Questions (FAQ)

Q: Can TLP521-1XGR and TLP521XGR be used as direct replacements for TLP521GR?

A: Yes. All three parts share identical electrical characteristics including isolation voltage (5300Vrms), current transfer ratio (100%-300% @ 1mA), output voltage rating (55V), output current (50mA), and switching timing specifications. They are packaged identically in 4-DIP through-hole format with matching pin configurations, enabling direct substitution without circuit modification.

Q: Are there any differences in compliance or certifications between these parts?

A: No. All three parts carry identical compliance certifications: ROHS3 compliant, REACH unaffected, and the same ECCN and HTSUS classifications. They meet the same environmental and regulatory standards.

Q: What is the basis for substitution between these part numbers?

A: Substitution is based on matching all critical parameters: single-channel configuration, 5300Vrms isolation rating, transistor output type, identical current transfer ratio specifications, maximum output voltage and current ratings, timing characteristics, operating temperature range, and 4-DIP through-hole package format.

Q: Does the series designation (TLP521 vs. TLP521-1) affect compatibility?

A: No. The series designation reflects internal product line organization by the manufacturer, but all variants maintain identical electrical and mechanical specifications that determine circuit compatibility.

Q: Which part should be selected based on availability?

A: Selection should prioritize availability based on project timeline and supply requirements. TLP521GR has the highest stock level (3718 units), making it the preferred choice for immediate availability. TLP521-1XGR (1199 units) and TLP521XGR (1078 units) are suitable alternatives when primary selection is unavailable.