4N27S(TB)-V Equivalent & Substitute Parts

Part Overview

The 4N27S(TB)-V is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides galvanic isolation up to 5000Vrms with a single channel configuration in a 6-SMD surface mount package. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for optoisolator transistor applications, enabling component selection flexibility while maintaining circuit performance requirements.

Substiute Parts

4N27S(TB)-V

Everlight Electronics Co LtdIn Stock: 11444N27S(TB)-V Datasheet

Current PartRFQ

4N27SM

onsemiIn Stock: 164844N27SM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

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

Electrical Compatibility Criteria:

• Single channel configuration (Number of Channels = 1)
• Transistor with base output type
• Minimum current transfer ratio of 10% @ 10mA
• Maximum Vce saturation of 500mV
• Forward current rating of 60 mA maximum
• Input type: DC

Mechanical Compatibility Criteria:

• Surface mount mounting type
• 6-SMD, Gull Wing package configuration
• Supplier device package: 6-SMD

Compliance Requirements:

• Active product status
• RoHS3 compliance
• MSL rating of 1 (Unlimited)

The 4N27SM from onsemi meets these substitution criteria with the following considerations: isolation voltage is specified at 4170Vrms (lower than the 5000Vrms of the main part), maximum output voltage is 30V (lower than 80V), and operating temperature range is -40°C ~ 100°C (narrower than -55°C ~ 110°C). All other electrical and mechanical parameters align within acceptable substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

4N27S(TB)-V Selection Criteria:

• Applications requiring isolation voltage of 5000Vrms
• Output voltage requirements up to 80V
• Operating temperature range -55°C to 110°C
• Active product status with established supply chain
• RoHS3 compliant for regulated environments

4N27SM Selection Criteria:

• Applications with isolation voltage requirements of 4170Vrms or lower
• Output voltage requirements up to 30V maximum
• Operating temperature range -40°C to 100°C
• Faster switching performance (2µs turn-on/off versus 3µs)
• Active product status with RoHS3 compliance
• Higher inventory availability (16400 Pcs in stock)

Both parts maintain identical current transfer ratio specifications, Vce saturation ratings, forward current limits, and package configurations. Selection between these parts depends on specific isolation voltage, output voltage, and temperature range requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can the 4N27SM directly replace the 4N27S(TB)-V in all applications?

A: The 4N27SM is a substitute only for applications where the lower isolation voltage (4170Vrms versus 5000Vrms) and lower maximum output voltage (30V versus 80V) are acceptable. The narrower operating temperature range (-40°C to 100°C versus -55°C to 110°C) must also be verified against application requirements.

Q: What are the key electrical differences between these parts?

A: The primary differences are isolation voltage rating (5000Vrms for 4N27S(TB)-V, 4170Vrms for 4N27SM), maximum output voltage (80V versus 30V), and switching speed (3µs versus 2µs). Current transfer ratio, Vce saturation, and forward current specifications are identical.

Q: Are both parts RoHS3 compliant?

A: Yes, both the 4N27S(TB)-V and 4N27SM are RoHS3 compliant with MSL rating of 1 (Unlimited).

Q: Do these parts use the same package?

A: Yes, both parts use 6-SMD, Gull Wing surface mount packages with identical supplier device package specifications.

Q: Which part has better availability?

A: The 4N27SM has higher inventory availability at 16400 Pcs in stock compared to 1130 Pcs for the 4N27S(TB)-V.

Q: What is the temperature operating range difference?

A: The 4N27S(TB)-V operates from -55°C to 110°C, while the 4N27SM operates from -40°C to 100°C. Applications requiring extended low-temperature operation below -40°C require the 4N27S(TB)-V.