The most critical part of this string is . This is a safety classification set by Underwriters Laboratories (UL) , specifically under the UL 94 standard for the "Tests for Flammability of Plastic Materials for Parts in Devices and Appliances". 94V: Refers to the vertical burning test.
A 94V-0 PCB is highly fire-resistant and is considered self-extinguishing. SH14: The Manufacturer Identifier
The 94V-0 rating is a standard requirement for consumer electronics to ensure safety. sh14 94v-0
is not a universal standard code (like "FR4" for PCB). It is a manufacturer-specific part number .
The marking "SH14 94V-0" consists of two primary parts that provide crucial information about the board's origin and safety characteristics. 94V-0: The UL Flame Rating The most critical part of this string is
Boards marked SH14 94V-0 are usually made of FR-4 (Flame Retardant 4) material. This is a composite of fiberglass and epoxy resin.
Understanding the SH14 94V-0 PCB Marking: An In-Depth Guide When repairing, dismantling, or identifying components inside modern electronics, you may encounter the alphanumeric string printed on a green, blue, or black circuit board (PCB). This marking is commonly found in a wide range of devices, including smart speakers, power adapters, and consumer electronics, such as the Amazon Echo Pop . A 94V-0 PCB is highly fire-resistant and is
Suitable for environments requiring high fire resistance (e.g., power supplies, LED drivers, industrial controls).