NDFC16P Equivalent & Substitute Parts

Part Overview

The NDFC16P is a 16-position hexadecimal complement rotary DIP switch manufactured by NKK Switches. This through-hole component is designed for tool-actuated applications with a 100mA 5VDC rating and process-sealed construction. The part is currently in Last Time Buy status with 837 units in stock. Due to this product status, identifying functionally equivalent alternatives is essential for long-term design continuity and supply chain planning.

Substiute Parts

NDFC16P

NKK SwitchesIn Stock: 848NDFC16P Datasheet

Current PartRFQ

FD01FC16P-S

NKK SwitchesIn Stock: 921FD01FC16P-S Datasheet

MFR RecommendedRFQ

1-1825013-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8561-1825013-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NDFC16P is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration: Hexadecimal Complement (16-position)
• Actuator mechanism: Rotary for Tool (flush, recessed actuation)
• Mounting interface: Through Hole with 0.100" (2.54mm) pitch
• Termination style: PC Pin
• Contact material and finish: Beryllium Copper with Gold plating
• Process-sealed construction

Electrical Operating Range:

• Voltage rating must support minimum 5VDC operation
• Current capacity must meet or exceed 100mA
• Operating temperature range must encompass -25°C to 75°C

Mechanical Durability:

• Minimum 20,000 mechanical steps
• Minimum 20,000 electrical cycles

Parts meeting these criteria are classified as direct substitutes. Parts with enhanced electrical ratings (higher voltage or current capacity) are functionally compatible but represent design upgrades. Parts with reduced mechanical life or narrower operating temperature ranges are not suitable substitutes.

Parameter Comparison

Engineering Selection Recommendations

FD01FC16P-S (NKK Switches): This part is designated as the manufacturer-recommended substitute. As an active product from the same manufacturer, it provides design continuity with the NDFC16P. Incomplete parameter specification in available documentation requires direct verification with NKK Switches to confirm electrical ratings and mechanical life equivalence. This part is the preferred transition path for NDFC16P end-of-life replacement.

1-1825013-2 (TE Connectivity ALCOSWITCH): This part is functionally compatible based on shared circuit architecture (16-position hexadecimal complement), actuator type (rotary for tool), mounting interface (through-hole, 0.100" pitch), and contact materials (beryllium copper with gold finish). The part offers enhanced electrical ratings (20VAC/DC versus 5VDC) and extended operating temperature range (-30°C to 85°C versus -25°C to 75°C). However, electrical life is specified at 10,000 steps, which is 50% lower than the NDFC16P specification of 20,000 cycles. Physical dimensions differ: height above board is 0.130" (3.30mm) versus 0.205" (5.20mm), and length is 0.276" (7.00mm) versus 0.312" (7.92mm). These dimensional differences require PCB layout verification. RoHS compliance status is not applicable for this part. Selection of this substitute requires confirmation that reduced electrical life and dimensional changes are acceptable for the target application.

Frequently Asked Questions (FAQ)

Q: Can the FD01FC16P-S directly replace the NDFC16P without PCB modification?

A: The FD01FC16P-S shares the same 0.100" (2.54mm) pitch and through-hole mounting interface as the NDFC16P. However, complete parameter specification for the FD01FC16P-S is not available in current documentation. Verification with NKK Switches is required to confirm mechanical life, electrical ratings, and physical dimensions before confirming drop-in compatibility.

Q: Is the 1-1825013-2 suitable for 5VDC applications originally designed for the NDFC16P?

A: Yes. The 1-1825013-2 is rated for 20VAC/DC operation, which encompasses 5VDC. The hexadecimal complement circuit, 16-position configuration, rotary tool actuator, and beryllium copper gold-plated contacts are functionally equivalent. However, the reduced electrical life specification (10,000 steps versus 20,000 cycles) and different physical dimensions (0.130" height versus 0.205") require application-specific evaluation.

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

A: The NDFC16P has a height above board of 0.205" (5.20mm) and length of 0.312" (7.92mm). The 1-1825013-2 has a height of 0.130" (3.30mm) and length of 0.276" (7.00mm). These differences may affect PCB layout, clearance to adjacent components, and mechanical mounting. PCB design review is necessary before substitution.

Q: Does the 1-1825013-2 meet RoHS compliance requirements?

A: RoHS compliance status for the 1-1825013-2 is listed as "Not applicable." This indicates the part may not be subject to RoHS directives or compliance status is undefined by the manufacturer. If RoHS3 compliance is a design requirement, the FD01FC16P-S (ROHS3 Compliant) is the appropriate choice.

Q: Why is the NDFC16P in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer is discontinuing this product. Existing inventory (837 units) represents the final available stock. Customers requiring this component for future production must transition to an alternative part. The FD01FC16P-S is the manufacturer-recommended path forward.

Q: Can I use the 1-1825013-2 in applications requiring 20,000 electrical cycles?

A: The 1-1825013-2 is specified for 10,000 electrical steps, which is insufficient for applications requiring 20,000 cycles. Use of this part in such applications would violate the component's rated specifications. The NDFC16P or FD01FC16P-S (if confirmed to meet 20,000-cycle specification) are appropriate for this requirement.