4N27S(TA)-V Equivalent & Substitute Parts

Part Overview

The 4N27S(TA)-V is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation in a 6-SMD surface mount package and is designed for applications requiring galvanic isolation between input and output circuits. The part is currently in active production status with 674 units in stock.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters of the optoisolator category, specifically matching channel count, output type, package configuration, and mounting technology.

Substiute Parts

4N27S(TA)-V

Everlight Electronics Co LtdIn Stock: 7064N27S(TA)-V Datasheet

Current PartRFQ

4N27SM

onsemiIn Stock: 164844N27SM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4N27S(TA)-V is determined by the following critical parameters:

Primary Matching Criteria:

• Number of Channels: 1 channel required
• Output Type: Transistor with Base configuration
• Package / Case: 6-SMD, Gull Wing
• Mounting Type: Surface Mount
• Input Type: DC

Secondary Compatibility Factors:

• Voltage - Isolation: Minimum 4170Vrms (allows lower isolation ratings in specific applications)
• Current Transfer Ratio (Min): 10% @ 10mA or higher
• Vce Saturation (Max): 500mV or lower
• RoHS Compliance: ROHS3 Compliant

The 4N27SM from onsemi meets these substitution criteria within the allowed parameter ranges for optoisolator transistor components.

Parameter Comparison

Engineering Selection Recommendations

4N27S(TA)-V (Primary Part):

• Active production status with established supply (674 units in stock)
• ROHS3 compliant
• Supports full operating temperature range of -55°C to 110°C
• Maximum isolation voltage of 5000Vrms
• Maximum output voltage of 80V

4N27SM (Substitute Part):

• Active production status with higher inventory availability (16400 units in stock)
• ROHS3 compliant
• REACH Unaffected designation
• Reduced operating temperature range (-40°C to 100°C)
• Reduced isolation voltage (4170Vrms)
• Reduced maximum output voltage (30V)
• Faster switching characteristics (2µs vs 3µs)

Selection between these parts depends on application requirements for isolation voltage, output voltage rating, and operating temperature range. Both parts share identical package configuration, channel count, output type, and core electrical characteristics (current transfer ratio, forward current, saturation voltage).

Frequently Asked Questions (FAQ)

Q: Can 4N27SM be used as a direct replacement for 4N27S(TA)-V?

A: The 4N27SM is functionally compatible in applications where the reduced isolation voltage (4170Vrms vs 5000Vrms) and reduced maximum output voltage (30V vs 80V) do not exceed system requirements. Both parts use identical 6-SMD package configuration and share the same channel count and output type.

Q: What are the key differences between these parts?

A: The primary differences are isolation voltage rating, maximum output voltage, operating temperature range, and switching speed. The 4N27SM has lower isolation and output voltage ratings but faster switching characteristics. The 4N27S(TA)-V supports a wider operating temperature range.

Q: Are both parts RoHS compliant?

A: Yes, both 4N27S(TA)-V and 4N27SM are ROHS3 compliant. The 4N27SM additionally carries REACH Unaffected status.

Q: Do these parts have identical pinouts?

A: Both parts use 6-SMD, Gull Wing package configuration with identical pin assignments for single-channel transistor output with base configuration.

Q: What is the current transfer ratio for both parts?

A: Both parts specify a minimum current transfer ratio of 10% at 10mA input current.

Q: Which part should be selected for high-temperature applications?

A: The 4N27S(TA)-V supports operating temperatures up to 110°C, while the 4N27SM is rated to 100°C maximum. For applications exceeding 100°C, the 4N27S(TA)-V is required.

Q: Are there inventory considerations between these parts?

A: The 4N27SM has significantly higher inventory availability (16400 units vs 674 units for the 4N27S(TA)-V).