Peak is not service temperature
Record the ramp, peak, dwell time and number of cycles. A short process exposure does not establish a continuous-use rating.
Application solution / Extreme Temperature
Keep identification readable through demanding thermal processes.
Start with the process sequence, peak temperature and exposure time. Then match the label to the surface and the information that must survive each stage.
Start with the question
Will the identification survive the complete temperature profile?
02 / The application challenge
What must the label withstand?
A label can remain attached while its code becomes unreadable, or retain its print while the adhesive loses its bond. Thermal identification needs acceptance criteria for both, including the cleaning and handling that follow the heat exposure.
Surface and process stage
Identify the PCB surface, metal finish or component substrate. Determine whether the label is fitted before heat, between stages or after processing.
Print and geometry
Check code size, quiet zones, print contrast and dimensional stability after the complete process, including flux and cleaning.
Cold application conditions
Separate storage temperature from label application temperature. Include frost, condensation and the thaw cycle in evaluation.
03 / Recommended approach
Match the approach to the application.
Process identification needs to remain useful through the complete thermal sequence.
- PCB and SMT assembly through reflow and wave solder
- Electronics component and assembly traceability
- Industrial process tracking and heat-treatment environments
- Specialty cold-storage and cryogenic identification, evaluated separately
Barcode, QR code, Data Matrix and serial or sequential data connect each part to its process record. Define the scan distance and available area before setting code density; use thermal-transfer-compatible or digital print constructions only where they suit the thermal sequence.
04 / Construction & technical options
Select the complete printed construction.
Durable industrial film
PET / polyester with a matched adhesive and print system for industrial temperature classes and subsequent handling.
Electronics process identification
Polyimide / PI and specialty high-temperature constructions with process-compatible adhesive and printing.
Specialty thermal construction
Select specialty high- or low-temperature systems for the actual exposure. Cryogenic and extreme heat applications require separate construction choices.
Compliance and marking requirements
- UL-recognized / UL 969 related constructions and RoHS / REACH options are available for relevant projects, subject to the selected system and conditions.
- A thermal process class does not establish a flame classification or certify the finished equipment. Define any additional compliance requirement before selection.
05 / Selection & validation
Evaluate the label in its real conditions.
Evaluate sample labels on the intended substrate through the complete temperature and cleaning sequence. Agree adhesion, edge lift, dimensional stability and code-readability criteria before production. Exposure beyond normal PCB conditions can be evaluated separately.
06 / Discuss your application
Start with your application.
Tell us what needs identifying and where the label will be used. A short description or drawing is enough to begin.
Helpful application details, when available
- Substrate and application stage
- Service minimum / maximum and application temperature
- Peak, dwell time and number of cycles
- Reflow / wave-solder or cold-storage sequence
- Flux, cleaning fluids and handling
- Size, quantity, code data, artwork and supply format
- Compliance requirements and acceptance criteria