EL827 Optoisolator Equivalent & Substitute Parts

Part Overview

The EL827 is an active optoisolator manufactured by Everlight Electronics Co Ltd, designed for galvanic isolation applications requiring 5000Vrms isolation voltage with dual-channel transistor output configuration. This component operates in the DC input domain and delivers isolated transistor switching outputs suitable for industrial control, power management, and signal isolation circuits.

The EL827 maintains Active product status with 186,489 pieces in current inventory. Substitute parts are identified to address supply chain continuity, regional availability, or specific application requirements where electrical and mechanical parameters align within acceptable tolerances.

Substiute Parts

EL827

Everlight Electronics Co LtdIn Stock: 186560EL827 Datasheet

Current PartRFQ

LTV-827

Lite-On Inc.In Stock: 188107LTV-827 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EL827 optoisolator is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Isolation voltage: 5000Vrms
• Number of channels: 2
• Output type: Transistor
• Current transfer ratio range: 50% to 600% @ 5mA
• Package type: 8-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Input type: DC
• Vce saturation: 200mV maximum

Allowable Variation Parameters:

• Maximum output voltage: Substitute must support minimum 35V (EL827 supports 80V)
• Output current per channel: Substitute must support minimum 50mA
• Operating temperature range: Substitute must cover minimum -30°C to 110°C (EL827 covers -55°C to 110°C)
• Rise/Fall time: Specified as 3µs and 4µs; substitutes with 4µs and 3µs are functionally equivalent
• Forward voltage (Vf): 1.2V typical for both parts
• Maximum DC forward current: Substitute must support minimum 50mA

The LTV-827 manufactured by Lite-On Inc. meets all mandatory matching criteria and operates within allowable variation parameters for direct substitution in EL827 applications.

Parameter Comparison

Engineering Selection Recommendations

EL827 Selection Criteria:

• Applications requiring output voltage capability up to 80V
• Operating environments with extended low-temperature requirements (-55°C minimum)
• Input forward current specifications up to 60mA
• Primary sourcing from Everlight Electronics supply chain

LTV-827 Selection Criteria:

• Applications with output voltage requirements up to 35V maximum
• Operating temperature range -30°C to 110°C
• Input forward current specifications up to 50mA
• Primary sourcing from Lite-On Inc. supply chain
• Regional availability or supply chain continuity requirements

Both parts maintain Active product status and ROHS3 compliance. Selection between EL827 and LTV-827 is determined by specific application voltage and temperature requirements rather than functional isolation or switching characteristics. The LTV-827 is a direct functional substitute for EL827 applications operating within the stated parameter boundaries.

Frequently Asked Questions (FAQ)

Q: Can LTV-827 replace EL827 in all applications?

A: LTV-827 is a direct substitute for EL827 applications where output voltage does not exceed 35V and operating temperature remains within -30°C to 110°C. Applications requiring output voltages above 35V or operating below -30°C require EL827.

Q: What is the significance of the 80V versus 35V maximum output voltage difference?

A: The EL827 supports higher output voltage switching applications up to 80V, while the LTV-827 is rated to 35V maximum. Circuit design must verify that the substitute part's voltage rating matches the application's output switching requirements.

Q: Are the rise and fall times interchangeable between EL827 and LTV-827?

A: Yes. EL827 specifies 3µs rise time and 4µs fall time, while LTV-827 specifies 4µs rise time and 3µs fall time. Both configurations deliver equivalent switching performance for the specified isolation and output characteristics.

Q: Do both parts require identical PCB footprints?

A: Yes. Both EL827 and LTV-827 use 8-DIP (0.300", 7.62mm) through-hole packaging with identical pin configurations and spacing. No PCB layout modifications are required for substitution.

Q: What compliance certifications apply to both parts?

A: Both EL827 and LTV-827 are ROHS3 compliant and carry MSL rating 1 (Unlimited moisture sensitivity level). Both are classified under ECCN EAR99 and HTSUS 8541.49.8000.

Q: How do the current transfer ratios compare?

A: Both parts specify identical current transfer ratio ranges: 50% minimum to 600% maximum at 5mA input current. This parameter is not a differentiator between the two parts.

Q: What is the impact of the 60mA versus 50mA maximum DC forward current difference?

A: EL827 supports input forward current up to 60mA, while LTV-827 supports up to 50mA. Applications requiring input currents above 50mA must use EL827. Applications operating at or below 50mA input current can use either part.