QLA694B2H Equivalent & Substitute Parts

Part Overview

The QLA694B2H is a dual-level red LED circuit board indicator manufactured by onsemi, featuring a 3mm T-1 through-hole right-angle configuration with diffused, tinted lens. This component is designed for applications requiring dual red LED indication with a rated forward voltage of 2.1V and operating current of 10mA. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component sourcing.

Substiute Parts

QLA694B2H

onsemiIn Stock: 1054QLA694B2H Datasheet

Current PartRFQ

WP934EB/2ID

KingbrightIn Stock: 899WP934EB/2ID Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The WP934EB/2ID from Kingbright qualifies as a substitute for the QLA694B2H based on the following matching parameters:

• Dual-level configuration (2 High red LED)
• Identical lens size (3mm, T-1)
• Identical lens type (Diffused, Tinted)
• Identical lens style (Round with Domed Top)
• Identical mounting type (Through Hole, Right Angle)
• Identical color specification (Red x 2)
• Compatible voltage rating (2V vs. 2.1V)
• Moisture Sensitivity Level 1 (Unlimited)
• REACH Unaffected compliance status

The WP934EB/2ID operates at a higher current rating (20mA vs. 10mA) and delivers increased luminous intensity (22.5mcd vs. 1.4mcd), making it suitable for applications where the original component's performance envelope is acceptable or where enhanced brightness is beneficial.

Parameter Comparison

Engineering Selection Recommendations

The WP934EB/2ID is an active product from Kingbright with current manufacturing support, providing supply continuity for designs currently using the obsolete QLA694B2H. Both components share identical mechanical and optical characteristics, ensuring direct form-fit-function compatibility in through-hole PCB applications.

The primary electrical difference is the current rating differential (20mA vs. 10mA) and corresponding brightness increase (22.5mcd vs. 1.4mcd). Circuit designs must accommodate the higher current requirement through appropriate series resistor adjustment to maintain proper LED operating conditions. The voltage ratings (2V vs. 2.1V) are sufficiently close for standard circuit implementations.

Both components maintain REACH Unaffected status and MSL 1 classification, ensuring compliance consistency across design transitions.

Frequently Asked Questions (FAQ)

Q: Can the WP934EB/2ID be used as a direct drop-in replacement for the QLA694B2H?

A: The WP934EB/2ID is mechanically and optically compatible with identical form factor, lens configuration, and mounting type. However, the circuit must be modified to accommodate the higher current rating (20mA vs. 10mA) through series resistor adjustment. Direct substitution without circuit modification will result in over-current operation.

Q: What are the key compatibility criteria for substitution?

A: Substitution is based on matching configuration (2 High dual red), lens size (3mm T-1), lens type (Diffused, Tinted), lens style (Round with Domed Top), mounting type (Through Hole, Right Angle), and color specification (Red x 2). These parameters ensure mechanical fit and optical performance alignment.

Q: How does the brightness difference affect application suitability?

A: The WP934EB/2ID delivers 22.5mcd compared to the QLA694B2H's 1.4mcd. This increased luminous intensity may be beneficial for visibility in high-ambient-light environments or where enhanced indication is desired. Circuit design must account for the higher current requirement.

Q: Are there compliance or regulatory differences between these components?

A: Both components maintain identical REACH Unaffected status and MSL 1 (Unlimited) moisture sensitivity classification. No compliance barriers exist for substitution from a regulatory standpoint.

Q: What packaging considerations apply to the WP934EB/2ID?

A: The WP934EB/2ID is supplied in bulk packaging. Inventory availability is confirmed at 863 pieces in new original stock condition.