EL827S(TB) Optoisolator - Equivalent & Substitute Parts

Part Overview

The EL827S(TB) is a 2-channel optoisolator with transistor output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation and is designed for applications requiring galvanic isolation between input and output circuits. The part is currently in active production status with 813 pieces available in stock. Substitute parts are identified when identical electrical and mechanical parameters are maintained across different packaging configurations or inventory sources, ensuring functional interchangeability without design modification.

Substiute Parts

EL827S(TB)

Everlight Electronics Co LtdIn Stock: 879EL827S(TB) Datasheet

Current PartRFQ

EL827S1(TA)

Everlight Electronics Co LtdIn Stock: 24660EL827S1(TA) Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EL827S(TB) is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Voltage - Isolation: 5000Vrms
• Number of Channels: 2
• Current Transfer Ratio range: 50% to 600% @ 5mA
• Output Type: Transistor
• Voltage - Output (Max): 80V
• Current - Output / Channel: 50mA
• Voltage - Forward (Vf): 1.2V
• Current - DC Forward (If) (Max): 60mA
• Vce Saturation (Max): 200mV
• Operating Temperature: -55°C ~ 110°C
• Input Type: DC

Mechanical Parameters (Must Match Exactly):

• Mounting Type: Surface Mount
• Package / Case: 8-SMD, Gull Wing
• Supplier Device Package: 8-SMD

Compliance Parameters (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The EL827S1(TA) qualifies as a parametric equivalent substitute. The primary difference is packaging configuration (Tape & Reel versus bulk), which does not affect electrical performance or mechanical compatibility in the application circuit.

Parameter Comparison

Engineering Selection Recommendations

EL827S(TB) Selection Criteria:

• Use when bulk packaging is required or preferred for assembly operations
• Current inventory: 813 pieces available
• Suitable for applications with standard lead times

EL827S1(TA) Selection Criteria:

• Use when Tape & Reel packaging is required for automated pick-and-place assembly
• Significantly higher inventory availability: 24,620 pieces
• Recommended when extended supply chain security is a requirement
• Identical electrical and mechanical performance to EL827S(TB)

Both parts maintain active production status and full ROHS3 compliance. Selection between these two optoisolators should be based on packaging requirements and inventory availability, as all electrical and thermal specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can EL827S1(TA) be used as a direct replacement for EL827S(TB)?

A: Yes. The EL827S1(TA) is a parametric equivalent substitute. All electrical specifications, isolation voltage, channel count, output characteristics, and operating temperature range are identical. The only difference is packaging format: EL827S(TB) is supplied in bulk, while EL827S1(TA) is supplied in Tape & Reel configuration. Both use the same 8-SMD Gull Wing package footprint.

Q: What is the difference between bulk and Tape & Reel packaging?

A: Bulk packaging (EL827S(TB)) supplies components in standard quantities without tape or reel. Tape & Reel packaging (EL827S1(TA)) supplies components wound on continuous tape and reel, optimized for automated assembly equipment. The components themselves are electrically and mechanically identical.

Q: Are there any compliance differences between these parts?

A: No. Both EL827S(TB) and EL827S1(TA) are ROHS3 compliant with MSL rating of 1 (Unlimited). Both carry identical ECCN (EAR99) and HTSUS (8541.49.8000) classifications.

Q: Which part should be selected for high-volume production?

A: EL827S1(TA) is recommended for high-volume production due to Tape & Reel packaging compatibility with automated assembly lines and significantly higher inventory availability (24,620 pieces versus 813 pieces).

Q: Do these parts require different PCB footprints?

A: No. Both parts use the identical 8-SMD Gull Wing package and require the same PCB footprint. No design changes are necessary when substituting between these parts.

Q: What is the isolation voltage specification?

A: Both parts provide 5000Vrms isolation, suitable for applications requiring high-voltage galvanic separation between input and output circuits.

Q: Are there any temperature derating considerations?

A: Both parts operate across the identical temperature range of -55°C to 110°C. No derating differences exist between EL827S(TB) and EL827S1(TA).