Equivalent & Substitute Parts for 4N25-X009 Optoisolator

Part Overview

The 4N25-X009 is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This 6-SMD surface mount component provides 5000Vrms isolation with a single channel DC input and transistor output configuration. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Alternative models become necessary when addressing specific application requirements such as isolation voltage tolerance, output voltage/current specifications, or packaging format preferences while maintaining core functional compatibility.

Substiute Parts

4N25-X009

Vishay Semiconductor Opto DivisionIn Stock: 11194N25-X009 Datasheet

Current PartRFQ

4N26-X009

Vishay Semiconductor Opto DivisionIn Stock: 20284N26-X009 Datasheet

Parametric EquivalentRFQ

4N25-300E

Broadcom LimitedIn Stock: 12694N25-300E Datasheet

MFR RecommendedRFQ

4N25-500E

Broadcom LimitedIn Stock: 40934N25-500E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4N25-X009 is determined by the following critical parameters: number of channels (1), input type (DC), output type (transistor with base), mounting type (surface mount), package configuration (6-SMD Gull Wing), and compliance certifications (RoHS3, REACH Unaffected).

The substitute parts are grouped into two categories:

Parametric Equivalent (4N26-X009): Maintains identical electrical specifications including 5000Vrms isolation voltage, 20% minimum current transfer ratio, 70V maximum output voltage, 50mA output current, and 500mV Vce saturation. This part differs only in the base product number designation (4N26 versus 4N25) while preserving all functional parameters and packaging format.

MFR Recommended Substitutes (4N25-300E, 4N25-500E): These Broadcom Limited parts share the same base product number (4N25) and core architecture but operate at reduced isolation voltage (2500Vrms instead of 5000Vrms). They provide higher output current capability (100mA versus 50mA) and lower maximum output voltage (30V versus 70V). The 4N25-300E is supplied in tube packaging while the 4N25-500E is supplied in tape & reel format.

Parameter Comparison

Engineering Selection Recommendations

4N26-X009 Selection: This part is the direct parametric equivalent to the 4N25-X009. Both parts maintain identical electrical performance specifications and are manufactured by Vishay Semiconductor Opto Division. Selection of the 4N26-X009 is appropriate when the base product number designation does not impact system requirements and when 5000Vrms isolation voltage is mandatory. Both parts carry active product status and full RoHS3 compliance.

4N25-300E or 4N25-500E Selection: These Broadcom Limited alternatives are suitable when application requirements permit operation at 2500Vrms isolation voltage instead of 5000Vrms. The trade-off includes higher output current capability (100mA versus 50mA) and lower maximum output voltage (30V versus 70V). The 4N25-300E in tube packaging is appropriate for lower-volume applications, while the 4N25-500E in tape & reel format supports higher-volume production environments. Both parts maintain active product status and RoHS3 compliance. Selection between these two depends on packaging and supply chain requirements rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the 4N26-X009 be used as a direct replacement for the 4N25-X009?

A: Yes. The 4N26-X009 is a parametric equivalent with identical electrical specifications, isolation voltage, output characteristics, and package configuration. The difference in base product number does not affect functional compatibility.

Q: What are the key differences between the 4N25-X009 and the 4N25-300E?

A: The primary differences are isolation voltage (5000Vrms versus 2500Vrms), maximum output voltage (70V versus 30V), output current capability (50mA versus 100mA), and manufacturer (Vishay versus Broadcom). Rise and fall times are also slightly longer (3µs versus 2µs). The 4N25-300E is suitable only when the application isolation voltage requirement does not exceed 2500Vrms.

Q: What is the difference between the 4N25-300E and 4N25-500E?

A: These parts are electrically identical. The only difference is packaging format: the 4N25-300E is supplied in tube packaging while the 4N25-500E is supplied in tape & reel format. Selection depends on production volume and supply chain logistics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The 4N26-X009, 4N25-300E, and 4N25-500E are all RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of the 4N25-X009.

Q: Can I use the 4N25-300E in an application requiring 5000Vrms isolation?

A: No. The 4N25-300E operates at 2500Vrms isolation voltage. Use of this part in applications requiring 5000Vrms isolation would compromise system safety and regulatory compliance. The 4N26-X009 or 4N25-X009 must be used for 5000Vrms isolation requirements.

Q: What is the current transfer ratio specification for all substitute parts?

A: All substitute parts maintain a minimum current transfer ratio of 20% at 10mA input current, identical to the 4N25-X009 specification.