When looking at AC Safety ceramic chip capacitors from Johanson Dielectric you will see a marking of “JS” on its body. This is calling out that it is a “Safety” capacitor.
Here is an example of the marking.
Applicable Part Numbers
302R29N100JV3E-****-SC 302R29N100KV3E-****-SC 302R29N151KV3E-****-SC
302R29N180JV3E-****-SC 302R29N221KV3E-****-SC 302R29N330JV3E-****-SC
302R29N470JV3E-****-SC 302R29N680JV3E-****-SC 302R29W102KV3E-****-SC
302R29W152KV3E-****-SC 302R29W331KV3E-****-SC 302R29W471KV3E-****-SC
302R29W471MV3E-****-SC 302R29W681KV3E-****-SC 302R29W681MV3E-****-SC
302S43W222KV3E-****-SC 502R29N100KV3E-****-SC 502R29N101KV3E-****-SC
502R29N180JV3E-****-SC 502R29N330JV3E-****-SC 502R29W102KV3E-****-SC
502R29W331KV3E-****-SC 502R29W471KV3E-****-SC 502R29W681KV3E-****-SC
502R30N221KV3E-****-SC 502R30N330JV3E-****-SC 502R30W102KV3E-****-SC
502R30W222KV3E-****-SC 502R30W681KV3E-****-SC 502S47W222KV3E-****-SC
502S47W472KV3E-****-SC
302S43W222KV3E-****-SC-ND 502R30N221KV3E-****-SC-ND
709-1089-2-ND 709-1090-1-ND 709-1090-2-ND 709-1090-6-ND
709-1091-1-ND 709-1091-2-ND 709-1091-6-ND 709-1092-1-ND
709-1092-2-ND 709-1092-6-ND 709-1093-1-ND 709-1093-2-ND
709-1093-6-ND 709-1094-1-ND 709-1094-2-ND 709-1094-6-ND
709-1096-1-ND 709-1096-2-ND 709-1097-1-ND 709-1097-2-ND
709-1098-1-ND 709-1098-2-ND 709-1099-1-ND 709-1099-2-ND
709-1099-6-ND 709-1100-1-ND 709-1100-2-ND 709-1100-6-ND
709-1252-1-ND 709-1252-2-ND 709-1252-6-ND 709-1253-1-ND
709-1253-2-ND 709-1253-6-ND 709-1254-1-ND 709-1254-2-ND
709-1254-6-ND 709-1255-1-ND 709-1255-2-ND 709-1255-6-ND
709-1256-1-ND 709-1256-2-ND 709-1256-6-ND 709-1257-1-ND
709-1257-2-ND 709-1257-6-ND 709-1258-1-ND 709-1258-2-ND
709-1258-6-ND 709-1259-1-ND 709-1259-2-ND 709-1259-6-ND
709-1260-2-ND 709-1261-1-ND 709-1261-2-ND 709-1261-6-ND
709-1262-1-ND 709-1262-2-ND 709-1262-6-ND 709-1263-1-ND
709-1263-2-ND 709-1263-6-ND 709-1264-1-ND 709-1264-2-ND
709-1264-6-ND 709-1265-1-ND 709-1265-2-ND 709-1265-6-ND
709-1266-1-ND 709-1266-2-ND 709-1266-6-ND 709-1267-1-ND
709-1267-2-ND 709-1267-6-ND 709-1269-1-ND 709-1269-2-ND
709-1269-6-ND 709-1270-1-ND 709-1270-2-ND 709-1270-6-ND