TLP521-4XBL Equivalent & Substitute Parts

Part Overview

The TLP521-4XBL is a quad-channel optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This 16-DIP through-hole component provides 5300Vrms isolation voltage across four independent channels, each capable of 50mA output current. The device is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained within the specified tolerances, ensuring functional interchangeability in circuit applications.

Substiute Parts

TLP521-4XBL

Isocom Components 2004 LTDIn Stock: 940TLP521-4XBL Datasheet

Current PartRFQ

ISP521-4XBL

Isocom Components 2004 LTDIn Stock: 1297ISP521-4XBL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLP521-4XBL is determined by strict equivalence across the following critical parameters:

• Number of Channels: 4 channels required
• Voltage - Isolation: 5300Vrms minimum
• Current Transfer Ratio: 200% minimum @ 1mA
• Output Type: Transistor output configuration
• Voltage - Output (Max): 55V or greater
• Current - Output / Channel: 50mA or greater
• Vce Saturation (Max): 400mV or less
• Package / Case: 16-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Operating Temperature Range: -30°C ~ 100°C minimum

The ISP521-4XBL meets all substitution criteria as a parametric equivalent from the same manufacturer, maintaining identical isolation voltage, channel configuration, output specifications, and package form factor.

Parameter Comparison

Engineering Selection Recommendations

The ISP521-4XBL qualifies as a direct parametric equivalent to the TLP521-4XBL. Both components are manufactured by Isocom Components 2004 LTD and maintain identical electrical specifications across all critical parameters including isolation voltage, channel count, output current rating, and saturation voltage. Both devices carry Active product status, RoHS3 compliance, and REACH unaffected designation, confirming regulatory equivalence. The identical 16-DIP through-hole package ensures mechanical interchangeability without PCB redesign. Selection between these parts may be based on inventory availability and lead time considerations, as no technical differentiation exists between the two models.

Frequently Asked Questions (FAQ)

Q: Can the ISP521-4XBL be used as a direct replacement for the TLP521-4XBL in existing designs?

A: Yes. The ISP521-4XBL is a parametric equivalent with identical electrical specifications, package form factor, and mounting type. No circuit modifications or PCB changes are required.

Q: Are there any differences in isolation voltage between these parts?

A: No. Both the TLP521-4XBL and ISP521-4XBL provide 5300Vrms isolation voltage across all four channels.

Q: Do both parts support the same output current per channel?

A: Yes. Both components are rated for 50mA maximum output current per channel with identical Vce saturation characteristics of 400mV maximum.

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across the -30°C to 100°C temperature range.

Q: What is the significance of the different series designations (TLP521-4 vs ISP521-4)?

A: The series designation reflects internal product line organization within Isocom Components 2004 LTD. The electrical and mechanical specifications remain equivalent across both series for these specific part numbers.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the TLP521-4XBL and ISP521-4XBL carry RoHS3 compliance certification and REACH unaffected status.

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

A: Both parts carry identical Active product status and regulatory certifications. Interchangeability is determined by the specific application requirements and qualification procedures established by the end user.