EURO QUARTZ CERAMIC RESONATORS PART NUMBER CODING Explanation The part numbers for ZTB ceramic resonators are derived according to the following table: 1 2 3 4 5 Part Number Frequency Frequency Range Tolerance Lead Length and Form 3 alpha characters represent the frequency range of the resonator Digits represent frequency An alpha character represents frequency range a) the units ’kHz’ is omitted A combination of digits and alpha characters represent tolerance. b) ‘M’ indicates MHz. A combination of alpha characters and digits represent lead length and form a) Alpha characters indicate lead length Part Number Codes b) Digits indicate lead form ‘ZTB’ indicates middle frequency range 455 ~ 455kHz D 190~249kHz D 250~374kHz P 375~429kHz E 430~509kHz P 510~699kHz J 700~999kHz J 1~1.25MHz 1.0M ~ 1MHz 0 1 2 5 6 7 8 ±0.5% ±0.3% ±0.2% ±2kHz ±1kHz ±0.7% ±1.0% A ~ Short lead B ~ Long lead C ~ Medium lead (standard) a) The ‘0’ indicating standard tolerance is omitted. b) ‘Tn’ indicates custom specification e.g. T1, T2 etc. a) The ‘A’ representing short lead is omitted. 0 ~ straight lead 1 ~ single-bend lead 2 ~ double-bend lead b) The ‘)’ indicating straight lead is omitted. Lead Length Table Frequency Range A B C Example Part Number 190 to 249kHz (D) 8.0 250 to 374kHz (D) 7.0 6.0 375 to 429kHz (P) 4.0 6.0 430 to 509kHz (E) 4.0 5.0 510 to 699kHz (P) 4.0 5.0 700 to 999kHz (J) 3.5 5.5 1 to 1.25MHz (MJ) 3.5 5.5 ZTB 455 E 1 C1 Middle frequency range 455kHz 430~509 frequency range Tolerance 0.3% Medium lead (5mm), single-bend lead EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] www.euroquartz.co.uk EURO QUARTZ CERAMIC RESONATORS PART NUMBER CODES ZTB SERIES Lead Form (mm) Type 0 Type 2 Type 1 (L) <1.0 0-0.5 <1.0 (L) Type 1 (L) B1 3.0±0.5 C1 3.0±0.5 Type 2 (L) A2 1.0±0.5 Lead Specifications Equal-line Location Bias-line Location Lead W idth Resonator Frequency Lead Alignment Lead Width Lead Pitch Lead Pitch Lead Thickness Lead Thickness 190~249kHz 1.6±0.3mm (Bias) 0.8mm 10mm 0.15mm 250~374kHz 1.6±0.3mm (Bias) 0.8mm 7.7mm 0.15mm 375~429kHz ±0.3mm (Equal) 0.8mm 5mm 0.5mm 430~449kHz ±0.3mm (Equal) 0.8mm 5mm 0.5mm 450~509kHz ±0.3mm (Equal) 0.8mm 5mm 0.5mm 510~610kHz ±0.3mm (Equal) 0.8mm 5mm 0.5mm 700~999kHz ±0.3mm (Equal) 0.8mm 2.5mm 0.5mm 1 ~ 1.25MHz ±0.3mm (Equal) 0.8mm 2.5mm 0.5mm EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] www.euroquartz.co.uk