EL4502S(TB) Equivalent & Substitute Parts

Part Overview

The EL4502S(TB) is an optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation with a single channel configuration in an 8-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 with the main component specifications, enabling direct replacement in circuit applications without functional degradation.

Substiute Parts

EL4502S(TB)

Everlight Electronics Co LtdIn Stock: 748EL4502S(TB) Datasheet

Current PartRFQ

6N135SMT&R

Isocom Components 2004 LTDIn Stock: 20046N135SMT&R Datasheet

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6N136SMT&R

Isocom Components 2004 LTDIn Stock: 22396N136SMT&R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute optoisolators for the EL4502S(TB) are identified based on the following critical parameters:

Electrical Compatibility Criteria:

• Isolation voltage rating of 5000Vrms
• Single channel configuration
• Current transfer ratio range encompassing or overlapping 19% to 50% @ 16mA
• Maximum output voltage of 20V
• Output current per channel of 8mA
• Operating temperature range of -55°C to 100°C
• Input type: DC
• Forward voltage (Vf) of 1.45V typical
• Maximum DC forward current (If) of 25mA

Mechanical Compatibility Criteria:

• 8-SMD package with Gull Wing lead configuration
• Surface mount mounting type
• Moisture sensitivity level 1 (Unlimited)

Compliance Criteria:

• RoHS3 compliance
• ECCN classification EAR99
• HTSUS code 8541.49.8000

The substitute parts 6N135SMT&R and 6N136SMT&R from Isocom Components 2004 LTD meet all electrical and mechanical requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

6N136SMT&R is the primary substitute for EL4502S(TB). This part demonstrates identical current transfer ratio minimum specification (19% @ 16mA), matching the main component across all critical electrical parameters. The 6N136SMT&R features faster turn-on time (150ns versus 350ns), providing improved switching performance. Both components maintain RoHS3 compliance, unlimited moisture sensitivity rating, and identical mechanical packaging.

6N135SMT&R functions as a secondary substitute with the following consideration: the current transfer ratio minimum is specified at 7% @ 16mA, which is lower than the EL4502S(TB) specification of 19% @ 16mA. This part remains electrically compatible within the maximum transfer ratio specification (50% @ 16mA) and maintains all other critical parameters. Selection of 6N135SMT&R is appropriate when circuit design accommodates the lower minimum transfer ratio specification.

All three components share identical isolation voltage, output voltage rating, output current rating, operating temperature range, package configuration, and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can 6N135SMT&R directly replace EL4502S(TB) in all applications?

A: 6N135SMT&R is electrically compatible with identical isolation voltage, output ratings, and package configuration. The primary difference is the current transfer ratio minimum specification of 7% @ 16mA compared to 19% @ 16mA for EL4502S(TB). Direct replacement is suitable when circuit design does not require the higher minimum transfer ratio.

Q: What is the difference between 6N135SMT&R and 6N136SMT&R?

A: Both parts are manufactured by Isocom Components 2004 LTD and share identical isolation voltage, output specifications, and package configuration. The 6N136SMT&R specifies a current transfer ratio minimum of 19% @ 16mA and turn-on/turn-off times of 150ns and 400ns. The 6N135SMT&R specifies a lower current transfer ratio minimum of 7% @ 16mA with unspecified switching times. The 6N136SMT&R provides closer electrical alignment with EL4502S(TB) specifications.

Q: Are the output configurations different between these parts?

A: EL4502S(TB) features transistor output. Both 6N135SMT&R and 6N136SMT&R feature transistor with base output. This configuration difference does not prevent substitution; the base connection provides additional circuit design flexibility while maintaining functional compatibility.

Q: Do all three parts use the same package?

A: All three parts use 8-SMD package with Gull Wing lead configuration, enabling direct mechanical substitution on existing PCB layouts designed for EL4502S(TB).

Q: Are there compliance or regulatory differences?

A: All three parts are RoHS3 compliant, classified as EAR99 for export control purposes, and share identical HTSUS classification. Moisture sensitivity level is 1 (Unlimited) for all parts. No compliance barriers exist for substitution.

Q: What is the inventory status of substitute parts?

A: 6N135SMT&R has 1967 pieces in stock. 6N136SMT&R has 2188 pieces in stock. Both substitute parts maintain higher inventory levels than the main component (641 pieces).