SPR-39MVWF Equivalent & Substitute Parts

Part Overview

The SPR-39MVWF is a dual-color LED indicator (Green/Red) in T-1 through-hole package manufactured by Rohm Semiconductor. This component provides visual indication across two distinct wavelengths with common cathode configuration. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SPR-39MVWF

Rohm SemiconductorIn Stock: 975SPR-39MVWF Datasheet

Current PartRFQ

WP115VEGW

KingbrightIn Stock: 37379WP115VEGW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SPR-39MVWF is determined by the following critical parameters:

Primary Compatibility Criteria:

• Dual-color configuration (Green/Red) with common cathode topology
• Through-hole radial package with 3-lead structure (T-1 form factor)
• Diffused lens with round domed top geometry
• Forward voltage compatibility within acceptable operating ranges (2.1V Green, 2V Red nominal)
• Physical dimensions permitting direct board-level replacement

Secondary Consideration Parameters:

• Millicandela rating (brightness level)
• Viewing angle characteristics
• Wavelength specifications (dominant and peak)
• Test current ratings
• Compliance certifications (RoHS3, REACH)

The WP115VEGW from Kingbright meets all primary compatibility criteria and maintains functional equivalence across the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

The WP115VEGW qualifies as a direct functional substitute for the SPR-39MVWF based on the following engineering criteria:

Compliance & Availability:

• Both components maintain ROHS3 compliance and REACH unaffected status
• WP115VEGW is in active production with substantial inventory availability (37,278 pcs), whereas SPR-39MVWF is obsolete
• Identical electrical configuration (common cathode, dual-color topology) ensures circuit-level compatibility

Electrical Performance:

• Forward voltage specifications are within acceptable tolerance ranges for standard LED driver circuits
• Green channel forward voltage variance of +0.1V is negligible in typical current-limiting applications
• Red channel forward voltage matches exactly at 2V nominal

Physical Integration:

• Identical T-1 radial 3-lead package structure permits direct board-level substitution
• Lens diameter variance (3.00mm vs 3.10mm) is within standard mechanical tolerance for through-hole mounting
• Height increase of 2.63mm must be verified against available PCB clearance in the target application

Performance Characteristics:

• WP115VEGW provides enhanced brightness (30mcd Green, 20mcd Red vs 10mcd Green, 6.3mcd Red), suitable for applications requiring improved visibility
• Wider viewing angle (60° vs 35°) extends operational visibility envelope
• Higher test current rating (20mA vs 10mA) indicates robust design margin

Frequently Asked Questions (FAQ)

Q: Can WP115VEGW be used as a direct replacement for SPR-39MVWF in existing designs?

A: Yes. Both components share identical package configuration (T-1 radial 3-lead), common cathode topology, and dual-color (Green/Red) functionality. Circuit-level compatibility is confirmed across all primary electrical parameters. Physical board-level substitution is feasible provided PCB clearance accommodates the 7.83mm maximum height of the WP115VEGW.

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

A: The primary differences are brightness (WP115VEGW is brighter), viewing angle (WP115VEGW offers 60° vs 35°), physical height (+2.63mm), and wavelength specifications. Forward voltage variance is minimal (+0.1V on green channel only). The WP115VEGW is in active production while SPR-39MVWF is obsolete.

Q: Are there any circuit modifications required when substituting WP115VEGW for SPR-39MVWF?

A: No circuit modifications are required. Both components operate at identical forward voltages (2.1V/2.2V Green, 2V Red) and share the same common cathode configuration. Existing current-limiting resistor values remain valid. The higher brightness of WP115VEGW may be visually more prominent but does not necessitate design changes.

Q: What is the impact of the 2.63mm height difference?

A: The WP115VEGW is 2.63mm taller than the SPR-39MVWF (7.83mm vs 5.20mm maximum height). Verify that the target PCB assembly has sufficient clearance above the component mounting location. This is the primary mechanical consideration for board-level substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both SPR-39MVWF and WP115VEGW are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Why does WP115VEGW have a higher test current rating?

A: The WP115VEGW is specified at 20mA test current (vs 10mA for SPR-39MVWF), indicating a more robust LED die design. This higher rating provides additional design margin and does not affect substitution compatibility. Standard current-limiting circuits designed for the SPR-39MVWF will operate the WP115VEGW within safe parameters.