IS15SBFP4B Equivalent & Substitute Parts

Part Overview

The IS15SBFP4B is a programmable display pushbutton switch from NKK Switches' SmartDisplay™ series, featuring an integrated LCD display with SPST-NO switching capability rated at 0.1A @ 12VDC. This component combines a mechanical switch with a black and white FSTN positive display and white super bright LED indicator in a compact through-hole package.

The IS15SBFP4B is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

IS15SBFP4B

NKK SwitchesIn Stock: 1000IS15SBFP4B Datasheet

Current PartRFQ

IS15EBFP4RGB-09YN

NKK SwitchesIn Stock: 1646IS15EBFP4RGB-09YN Datasheet

DirectRFQ

IS15BSBFP4RGB

NKK SwitchesIn Stock: 976IS15BSBFP4RGB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IS15SBFP4B is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO to maintain electrical switching behavior
• Contact Rating: Must support 0.1A @ 12VDC minimum
• Mounting Type: Must be Through Hole with PC Pin termination for PCB compatibility
• Mechanical Interface: Face size and travel range determine physical fit within existing designs
• Display Compatibility: Pixel format and viewing area affect functional display capability

Two substitute parts meet these criteria:

IS15EBFP4RGB-09YN (Direct Manufacturer Substitute): Maintains SPST-NO circuit, 0.1A @ 12VDC contact rating, through-hole PC pin mounting, and identical travel range (1.8mm). Offers enhanced display resolution (64 x 32 pixels vs. 36 x 24) and RGB LED capability. Product status is active with ROHS3 compliance.

IS15BSBFP4RGB (Similar Manufacturer Substitute): Maintains SPST-NO circuit, 0.1A @ 12VDC contact rating, through-hole PC pin mounting, identical face size (19.0mm L x 18.0mm W), and identical travel range (1.8mm). Offers RGB LED capability and extended operating temperature range. Product status is active with ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

IS15BSBFP4RGB is the primary substitute for direct replacement in existing designs. This part maintains identical face size (19.0mm L x 18.0mm W) and travel range (1.8mm), ensuring mechanical compatibility with existing PCB layouts and mechanical enclosures. The part is active with ROHS3 compliance, providing long-term supply chain stability. The extended operating temperature range (-15°C ~ 50°C) and RGB LED capability offer functional improvements over the obsolete IS15SBFP4B while preserving the compact form factor.

IS15EBFP4RGB-09YN is suitable for applications where increased display resolution (64 x 32 pixels vs. 36 x 24) and larger viewing area are beneficial. This part requires mechanical redesign due to larger face size (23.13mm L x 20.59mm W) and increased travel range (4.5mm). The narrower supply voltage range (4.9 ~ 5.1VDC) requires verification against system power specifications. This part is active with ROHS3 compliance.

Both substitute parts maintain the critical SPST-NO circuit configuration and 0.1A @ 12VDC contact rating required for electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can IS15EBFP4RGB-09YN be used as a direct drop-in replacement for IS15SBFP4B?

A: No. While IS15EBFP4RGB-09YN maintains electrical compatibility (SPST-NO, 0.1A @ 12VDC), the larger face size (23.13mm L x 20.59mm W vs. 19.0mm L x 18.0mm W) and increased travel range (4.5mm vs. 1.8mm) require mechanical redesign of the PCB layout and enclosure. The narrower supply voltage range (4.9 ~ 5.1VDC) must be verified against system specifications.

Q: Can IS15BSBFP4RGB be used as a direct drop-in replacement for IS15SBFP4B?

A: Yes. IS15BSBFP4RGB maintains identical face size (19.0mm L x 18.0mm W), travel range (1.8mm), supply voltage range (3.0 ~ 5.5VDC), and mounting configuration (through-hole PC pin). The electrical circuit (SPST-NO) and contact rating (0.1A @ 12VDC) are identical. No mechanical redesign is required.

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

A: IS15BSBFP4RGB is mechanically identical to IS15SBFP4B and requires no design changes. IS15EBFP4RGB-09YN offers higher display resolution (64 x 32 vs. 36 x 24 pixels) and larger viewing area but requires mechanical redesign due to increased face size and travel range. Both substitutes provide RGB LED capability and extended operating temperature range compared to the obsolete IS15SBFP4B.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both IS15EBFP4RGB-09YN and IS15BSBFP4RGB are ROHS3 compliant. The original IS15SBFP4B RoHS status is not specified in available documentation.

Q: What is the supply voltage compatibility consideration for IS15EBFP4RGB-09YN?

A: IS15EBFP4RGB-09YN operates within a narrower supply voltage range (4.9 ~ 5.1VDC) compared to IS15SBFP4B (3.0 ~ 5.5VDC). Systems with supply voltages below 4.9VDC or above 5.1VDC are not compatible with IS15EBFP4RGB-09YN. IS15BSBFP4RGB maintains the original 3.0 ~ 5.5VDC range.

Q: How do the operating force specifications differ?

A: IS15SBFP4B requires 224gf operating force. IS15BSBFP4RGB requires 173gf (lower actuation force). IS15EBFP4RGB-09YN requires 204gf. Lower operating force may affect user interface feel and tactile feedback in applications where this is a design consideration.