The D5V0F1U2LPQ-7B protects one signal or power line operating up to 5V against electrostatic discharge and transient surges. Internally it is not a plain zener: a TVS clamping element is combined with high-speed steering diodes in a flow-through topology, which is how the device achieves a junction capacitance of only 0.4pF typical (0.65pF max) - low enough for USB 2.0 and faster interfaces, IEEE 1394, Serial ATA, DVI and HDMI lines where signal integrity must not be compromised.

Protection capability is rated to IEC 61000-4-2 at ±15kV contact and ±20kV air discharge, beyond Level 4 of the standard. The working voltage VRWM is 5.5V max with reverse leakage of no more than 100nA, breakdown is 6.0V minimum, and during a 1A 8/20µs surge the line is clamped to 10V typical (12V max) with a low 0.9Ω typical dynamic resistance. Peak pulse current handling is 1.5A (8/20µs waveform).

The Q in the part number marks the automotive grade: the device is AEC-Q101 qualified, PPAP capable and manufactured in IATF 16949 certified facilities, so the same protection design can be carried from consumer into automotive interfaces. The X1-DFN1006-2 package occupies a 1.08mm x 0.68mm footprint at just 0.53mm height and roughly 0.001g, fitting the tightest portable layouts; the -7B suffix is 10,000 units on tape and reel, marking code U7 with a bar denoting pin 1.

Note: Refer to the official Diodes Incorporated D5V0F1U2LPQ datasheet for full electrical parameters and curves. Subject to change without notice; verify all parameters before final design.

The D5V0F1U2LPQ-7B uses the X1-DFN1006-2 package - a leadless 2-terminal DFN with a 1.08mm x 0.68mm PCB footprint and a maximum profile of only 0.53mm, weighing approximately 0.001g. The "Green" molding compound is UL 94V-0 rated, terminals are NiPdAu over copper leadframe, solderable per MIL-STD-202 Method 208.

Moisture sensitivity is Level 1 (J-STD-020), requiring no dry-pack restrictions. The -7B suffix denotes 10,000 units on 7-inch tape and reel; the device is totally lead-free, halogen and antimony free, RoHS compliant. The U7 marking code carries a bar that identifies pin 1 for orientation.

The device has two terminals; being unidirectional, orientation matters:

• Pin 1: Identified by the bar in the U7 marking - connect per the device schematic polarity (protected-line side per datasheet orientation).
• Pin 2: Second terminal of the protection path (ground-return side per datasheet orientation).

The internal network - a TVS clamping element with high-speed steering diodes between Pin 1 and Pin 2 - holds the line within the rated clamping voltage during a strike. Connect the device directly at the connector with the shortest possible ground return. Confirm polarity against the device schematic below before layout.

The following low-capacitance ESD protection devices are listed for reference. Verify working voltage, direction (uni/bi), capacitance, clamping and footprint before substituting.

Diodes Incorporated (NASDAQ: DIOD), headquartered in Plano, Texas, USA, is a leading supplier of discrete, analog and mixed-signal semiconductors with a strong portfolio in circuit protection, small-signal devices and miniature packaging. Its TVS and ESD protection lines cover consumer, industrial and automotive interfaces, with AEC-qualified flows, PPAP capability and IATF 16949 certified manufacturing for parts such as the D5V0F1U2LPQ.

Diodes Incorporated provides complete datasheets, suggested pad layouts and long-term supply, with authorized distribution and technical support across China for both prototype and volume programs.