Standard No.:	GB/T 6427-2025
English Name:	Test method for frequency temperature stability of piezoelectric ceramic vibrator
Chinese Name:	压电陶瓷振子频率温度稳定性的测试方法
Chinese Classification:	L90    Special electronic technology material
Professional Classification:	GB    National Standard
Source Content Issued by:	SAMR; SAC
Issued on:	2025-8-29
Implemented on:	2026-3-1
Status:	to be valid
Superseding:	GB/T 6427-1999 Test method for frequency temperature stability of piezoelectric ceramic vibrator
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	210.0
Delivery:	via email in 1~3 business day

GB/T 6427-2025 Test method for frequency temperature stability of piezoelectric ceramic vibrator English, Anglais, Englisch, Inglés, えいご This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered. ICS 31. 030 CCS L 90 National Standards of the People's Republic of China GB/T 6427-2025 replaces GB/T 6427-1999 Test method for frequency temperature stability of piezoelectric ceramie vibrator Issued on August 29, 2025 and implemented on March 1, 2026 Issued by State Administration for Market Regulation, Standardization Administration of China Contents Preface 1 Scope 2 Normative References 3 Terms and definitions 4 Testing principles 5 Testing Equipment 6 Test Samples 7 Test conditions 8 Test steps Calculation of 9-parameter performance 10 Test Report Testing method for frequency temperature stability of piezoelectric ceramic oscillator 1 Scope This document describes the testing method for the frequency temperature stability of piezoelectric ceramic oscillators. This document is applicable for testing the temperature stability of the series resonant frequency and parallel resonant frequency of piezoelectric ceramic oscillators in the radial stretching vibration mode of circular disks and the transverse stretching vibration mode of long strips. Other piezoelectric ceramic oscillators can be used as reference. 2 Normative References The contents of the following documents constitute essential clauses of this document through normative references in the text. Among them, for referenced documents with dates, only the version corresponding to that date is applicable to this document; The latest version (including all modifications) of the referenced document without a date is applicable to this document. GB/T 2414.1 Test methods for piezoelectric ceramic materials—Radial expansion vibration mode of discs GB/T 2414.2 Test methods for piezoelectric ceramic materials—Longitudinal expansion vibration mode of bars GB/T 3389 Test methods for piezoelectric ceramic materials—Measurement of performance parameters GB/T 3389.1 Ferroelectro-piezoelectric ceramic vocabulary 3 Terms and definitions The terms and definitions defined in GB/T 3389.1 are applicable to this document. 4 Testing principles Temperature stability refers to the characteristic of piezoelectric ceramic properties changing with temperature. Frequency temperature stability is the characteristic of frequency changing with temperature, which can be described by two methods: frequency temperature coefficient or maximum relative frequency drift. At a certain temperature, when the temperature changes by 1 ℃, the ratio of the frequency value change to the frequency value at that temperature is called the frequency temperature coefficient (Tf), which can be expressed by formula (1):