| HEC Part Number | RoHS Compliance |
| H Crystals (HC49U) | Compliant |
| HH Crystals (HC49US) | Compliant |
| HHS Crystals (HC49USS) | Compliant |
| H1 Crystal | Compliant |
| H5 Crystal | Compliant |
| MTF, MMTF, and HE38, HE26, HE15 | Compliant |
| HE3A / HH3A | Compliant |
| HE-MCC-125 | Compliant |
| HE-MCC-6 | Compliant |
| HE-MCC-110 | Compliant |
| HE-MCC-120 | Compliant |
| HE-T1-32S | Compliant |
| HE-T3-32 | Compliant |
| HE-T9-32 | Compliant |
| HEF and HEH Series Clock Oscillators | Compliant |
| HE-ECL-1400 / HE-PECL-1400 | Compliant |
| HE-SMO-180 / HE-SMO-190 | Compliant |
| HE-SMO-120 / HE-SMO-130 | Compliant |
| HE-SMO-53 / HE-SMO-55 | Compliant |
| HE-SMO-32 | Compliant |
| HE-SPO-5 / HE-SPO-3 | Compliant |
| HE-SPO-5MT / HE-SPO-3MT | Compliant |
| HE-SPO-550 / HE-SPO-533 | Compliant |
| HTRL High Temperature Series | Compliant |
| HE-TXO-53 | Compliant |
| HE-TXO-32 | Compliant |
| HE-TXO-75 | Compliant |
| HE-TXO-758 | Compliant |
| HE-TXO-8 | Compliant |
| HE-TXO-R42 / HE-TXO-R45 | Compliant |
| HE-TXO-10A | Compliant |
| HE-TXO-007 | Compliant |
| HE-TXO-120 | Compliant |
| HE-TXO-007 | Compliant |
| HE-TXO-1000 | Compliant |
| HE-VXO-D | Compliant |
| HE-SVXO-100 | Compliant |
| HE-SVXO-200 | Compliant |
| HE-SVXO-6 | Compliant |
| HE-OCXO | Compliant |
| HE-SAW | Compliant |
| ZTT, ZTA, ZTB Resonators | Compliant |