BPA10K Equivalent & Substitute Parts

Part Overview

The BPA10K is a DIP switch manufactured by C&K, featuring a 10-position SPST configuration with piano actuator, rated for 100mA at 5VDC. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The BPA10K utilizes phosphor bronze contacts with tin finish and is designed for through-hole, right-angle mounting applications.

Key Parameters

Parameter	Value
Circuit Configuration	SPST (Single Pole Single Throw)
Number of Positions	10
Current Rating	100mA
Voltage Rating	5VDC
Actuator Type	Piano, Raised Level
Mounting Type	Through Hole, Right Angle
Pitch	0.100" (2.54mm)
Height Above Board	0.287" (7.30mm)
Operating Temperature Range	-20°C to 85°C
Mechanical Life	1,000 Cycles
Electrical Life	1,000 Cycles

Substitute Part Grouping Explanation

The BPA10B qualifies as a direct substitute for the BPA10K based on matching electrical and mechanical parameters. Substitution eligibility is determined by the following criteria:

Circuit configuration: SPST (identical)
Number of positions: 10 (identical)
Current and voltage ratings: 100mA at 5VDC (identical)
Actuator type and level: Piano, raised (identical)
Mounting configuration: Through hole, right angle (identical)
Pitch and height specifications: 0.100" (2.54mm) and 0.287" (7.30mm) (identical)
Operating temperature range: -20°C to 85°C (identical)
Mechanical and electrical life: 1,000 cycles (identical)

The BPA10B maintains full functional equivalence with the BPA10K across all critical electrical and mechanical parameters.

Parameter Comparison

Parameter	BPA10K (Main Part)	BPA10B (Substitute)
Manufacturer	C&K	C&K
Series	BPA	BPA
Product Status	Obsolete	Active
Circuit Configuration	SPST	SPST
Number of Positions	10	10
Current Rating	100mA	100mA
Voltage Rating	5VDC	5VDC
Actuator Type	Piano, Raised	Piano, Raised
Contact Material	Phosphor Bronze	Beryllium Copper
Contact Finish	Tin	Gold
Height Above Board	0.287" (7.30mm)	0.287" (7.30mm)
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Termination Style	PC Pin	PC Pin
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Washable	Yes	Yes
Operating Temperature	-20°C to 85°C	-20°C to 85°C
Body Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS)
Length	1.075" (27.31mm)	1.075" (27.31mm)
Mechanical Life	1,000 Cycles	1,000 Cycles
Electrical Life	1,000 Cycles	1,000 Cycles
RoHS Status	RoHS Non-Compliant	RoHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8536.50.9065	8536.50.9065

Engineering Selection Recommendations

The BPA10B is the appropriate substitute for the obsolete BPA10K. Both components share identical electrical ratings, mechanical dimensions, and functional specifications. The primary distinction is product status: the BPA10K is obsolete, while the BPA10B is active and currently available.

The BPA10B offers improved compliance posture, meeting RoHS3 requirements compared to the BPA10K's non-compliant status. Additionally, the BPA10B features beryllium copper contacts with gold finish, which provides enhanced contact reliability and corrosion resistance relative to the phosphor bronze with tin finish used in the BPA10K. These material upgrades do not alter electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the BPA10B be used as a direct replacement for the BPA10K in existing designs?

A: Yes. The BPA10B maintains identical electrical ratings (100mA at 5VDC), circuit configuration (SPST, 10-position), mechanical dimensions (0.287" height, 0.100" pitch), and mounting type (through-hole, right-angle). No design modifications are required.

Q: What are the differences between the BPA10K and BPA10B?

A: The primary differences are product status (BPA10K is obsolete; BPA10B is active), contact materials (phosphor bronze with tin versus beryllium copper with gold), and RoHS compliance (non-compliant versus RoHS3 compliant). Electrical and mechanical specifications are identical.

Q: Does the contact material change affect circuit performance?

A: No. Both contact material systems meet the specified 100mA at 5VDC electrical requirements. The beryllium copper with gold finish in the BPA10B provides enhanced contact durability and corrosion resistance.

Q: Are there packaging differences between these parts?

A: The BPA10K packaging is not specified in available data. The BPA10B is supplied in tube packaging. Confirm packaging requirements for your procurement process.

Q: Is the BPA10B suitable for applications requiring RoHS compliance?

A: Yes. The BPA10B is RoHS3 compliant, making it suitable for applications with RoHS requirements. The BPA10K is not RoHS compliant.

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