TLP521-1GR Equivalent & Substitute Parts

Part Overview

The TLP521-1GR is a single-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This 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 in active production status with 22,402 units in stock. Substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and compliance certifications to ensure direct functional equivalence in circuit applications.

Substiute Parts

TLP521-1GR

Isocom Components 2004 LTDIn Stock: 22424TLP521-1GR 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 TLP521-1GR are qualified based on the following critical parameters that determine functional equivalence:

• 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)

The identified substitutes TLP521-1XGR and TLP521XGR maintain identical electrical performance specifications and mechanical compatibility, differing only in packaging format (Tube) and inventory availability.

Parameter Comparison

Engineering Selection Recommendations

All three parts—TLP521-1GR, TLP521-1XGR, and TLP521XGR—are functionally equivalent for circuit applications requiring single-channel optoisolation with transistor output. Selection should be based on the following factors:

Product Status and Compliance: All parts maintain active production status and comply with ROHS3 and REACH requirements, ensuring regulatory compliance for current and future applications.

Inventory Availability: The TLP521-1GR offers the highest stock level (22,402 units), making it the preferred choice for high-volume production or immediate availability requirements. The TLP521-1XGR (1,199 units) and TLP521XGR (1,078 units) are suitable for lower-volume applications or as secondary sources.

Packaging Format: The primary difference between parts is packaging. TLP521-1GR is supplied in standard packaging, while TLP521-1XGR and TLP521XGR are supplied in Tube format. Packaging selection depends on assembly process requirements and handling procedures.

Electrical and Mechanical Compatibility: All parts share identical electrical specifications and 4-DIP through-hole package dimensions, ensuring direct pin-for-pin compatibility in PCB designs without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can TLP521-1XGR and TLP521XGR be used interchangeably with TLP521-1GR in existing designs?

A: Yes. All three parts are electrically and mechanically equivalent. They share identical isolation voltage (5300Vrms), current transfer ratio (100%-300% @ 1mA), output specifications (55V max, 50mA max), and 4-DIP package dimensions. Direct substitution is possible without circuit redesign.

Q: What is the difference between TLP521-1GR, TLP521-1XGR, and TLP521XGR?

A: The parts differ in packaging format and inventory levels. TLP521-1GR uses standard packaging with 22,402 units in stock. TLP521-1XGR and TLP521XGR use Tube packaging with lower inventory levels (1,199 and 1,078 units respectively). All electrical and mechanical specifications are identical.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. TLP521-1GR, TLP521-1XGR, and TLP521XGR are all ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the operating temperature range for these optoisolators?

A: All three parts operate across the temperature range of -30°C to 100°C, suitable for standard industrial and commercial environments.

Q: Can these parts be used in high-isolation applications?

A: Yes. All parts provide 5300Vrms isolation voltage, qualifying them for applications requiring galvanic isolation between input and output circuits.

Q: What is the maximum output current for these optoisolators?

A: The maximum output current per channel is 50mA for all three parts, with maximum output voltage of 55V and Vce saturation of 400mV maximum.