TLP621BL Equivalent & Substitute Parts

Part Overview

The TLP621BL is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This single-channel device provides galvanic isolation rated at 5300Vrms and is designed for DC input applications requiring transistor-based switching outputs. The component is currently in active production status with substantial inventory availability (91,680 pcs). Alternative equivalent parts may be required due to supply chain considerations, packaging preferences, or specific application requirements.

Substiute Parts

TLP621BL

Isocom Components 2004 LTDIn Stock: 91700TLP621BL Datasheet

Current PartRFQ

ISP621-1XBL

Isocom Components 2004 LTDIn Stock: 991ISP621-1XBL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLP621BL is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 5300Vrms (mandatory match)
• Number of Channels: 1 (mandatory match)
• Output Type: Transistor (mandatory match)
• Package / Case: 4-DIP (0.300", 7.62mm) (mandatory match)
• Current Transfer Ratio Range: 200% - 600% @ 5mA (mandatory match)
• Maximum Output Voltage: 55V (mandatory match)
• Maximum Output Current: 50mA (mandatory match)
• Vce Saturation: 400mV maximum (mandatory match)
• Operating Temperature Range: -30°C ~ 100°C (mandatory match)
• Input Type: DC (mandatory match)

The ISP621-1XBL meets all mandatory substitution criteria and is classified as a parametric equivalent for the TLP621BL.

Parameter Comparison

Engineering Selection Recommendations

Both the TLP621BL and ISP621-1XBL are active production components manufactured by Isocom Components 2004 LTD with identical RoHS3 compliance and REACH unaffected status. The ISP621-1XBL is a direct parametric equivalent meeting all electrical and mechanical specifications of the TLP621BL.

The primary distinction between these parts is supplier packaging format: TLP621BL is supplied in standard packaging while ISP621-1XBL is supplied in tube packaging. This difference does not affect electrical performance or functional compatibility in circuit applications.

Minor timing parameter variance exists in rise time specification (TLP621BL: 2µs vs ISP621-1XBL: 4µs). This variance remains within acceptable tolerances for typical optoisolator switching applications and does not constitute a functional limitation.

Frequently Asked Questions (FAQ)

Q: Can ISP621-1XBL be used as a direct replacement for TLP621BL in existing designs?

A: Yes. The ISP621-1XBL meets all mandatory electrical and mechanical parameters of the TLP621BL, including isolation voltage, output current rating, saturation voltage, and package dimensions. Pin configuration and functional behavior are identical.

Q: What is the difference between TLP621BL and ISP621-1XBL?

A: Both parts are manufactured by Isocom Components 2004 LTD and share identical electrical specifications. The ISP621-1XBL is supplied in tube packaging, while TLP621BL packaging is not specified. Rise time specification shows minor variance (2µs vs 4µs), which does not affect functional compatibility in standard applications.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance status and REACH unaffected designation. Both are rated for the same isolation voltage (5300Vrms) and operating temperature range (-30°C ~ 100°C).

Q: Does the packaging format affect circuit performance?

A: No. Supplier packaging format (tube vs standard) does not affect electrical performance, functional behavior, or circuit compatibility. The 4-DIP package dimensions and pin configuration remain identical.

Q: What applications are these optoisolators suitable for?

A: These single-channel optoisolators with transistor output are designed for DC input applications requiring galvanic isolation. Typical applications include isolated switching, signal conditioning, and gate drive circuits where 5300Vrms isolation and 50mA output current are required.