Description
PDZ5.1B-QX is likely a PDZ-domain construct: PDZ5 (the domain), variant 1B, with the internal tag/clone label “QX.” PDZ domains are about 80–90 amino acids that mediate protein–protein interactions by binding short C-terminal motifs on partner proteins, enabling modular assembly of signaling scaffolds. The “1B” likely denotes an engineered variant with altered affinity or specificity, and “QX” is an internal designation (clone, tag, or vector). Such a construct is typically used to study ligand binding, build modular recruitment scaffolds, or serve as a binding module in biosensors or assays. If you can share the exact source (vendor, plasmid map, or publication) or the intended application, I can tailor the details (sequence, binding preferences, or usage).
Equivalent
PDZ5.1B-QX is a 5.1 V Zener diode (SMD). Equivalent parts from major vendors include: Vishay BZT52B5V1 (SOD-123) or BZX84C5V1 (SOT-23); NXP/Nexperia BZX84-C5V1; ON Semiconductor MMSZ5221B-5V1. Exact cross depends on package/tolerance; share package type to confirm precise equivalents.
Pinout
- Pin count: 3 pins
- Function: A single-channel 5.1 V TVS/ESD protection diode (Zener) used to protect a signal line by clamping transients to ground.
Manufacturer
I don’t have enough information to identify the manufacturer from the model PDZ5.1B-QX alone. Please share a link, image of the label, or the product category (e.g., power supply, sensor, connector). With that, I can name the maker and describe the company (for example, a global electronics/components manufacturer).
Package
PDZ5.1B-QX package type isn’t in my current data. Please provide the manufacturer or a datasheet/link, and I’ll confirm whether it’s an SMD (e.g., SOT-23, QFN) or through-hole package.
