When looking at MS-156C3 and MS-156HF Subminiature Coaxial Switches from Hirose, you might find it difficult to classify their differences. Here are some notes that may help.
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What does the MS-156C3 suffix “C” and “3” means?
“C” calls out compact.
“3” calls out a stronger design to defeat contamination. This is the standard model (than MS-156C) now. (156C is only one contact point, C3 is two contact points) -
What does the MS-156HF suffix “HF” means?
“HF” calls out Halogen Free.
Applicable Part Numbers
MS-156C
MS-156C(20)
MS-156C3
MS-156C3(20)
MS-156HF(01)
MS-156HF(20)
MS-156HF
MS-156HF(02)
MS-156HF(22)
H11669-ND
H11669TR-ND
MS-156HF-ND
MS-156HF(02)-ND
MS-156HF(22)-ND
H11670CT-ND
H11670DKR-ND
H11670TR-ND
H124920CT-ND
H124920DKR-ND
H124920TR-ND
H126278CT-ND
H126278DKR-ND
H126278TR-ND
MS-156C-ND