The D5V0L1B2S9-7 is a transient voltage suppressor designed to protect sensitive electronics from damage caused by electrostatic discharge. The B in the part number stands for bidirectional: two back-to-back junctions sit between the two terminals, so the device clamps transients of either polarity and can be mounted in either orientation - a practical advantage on signal lines that swing both ways or simply for foolproof assembly.

Its protection headroom is substantial for such a small device: ESD withstand is rated at ±30kV contact and ±30kV air per IEC 61000-4-2 - double the Level 4 requirement - and the peak pulse rating reaches 6A / 84W (8/20µs). Clamping is correspondingly firm: 7.0V typical (9.0V max) at 1A, rising to only 11.5V typical at the full 6A, thanks to a low differential resistance of 0.2Ω typical. The working voltage VRWM is 5V with channel leakage of just 10nA typical.

With a channel input capacitance of 15pF typical (20pF max), the low-capacitance design suits general signal, button, audio and lower-speed interface lines of cellular handsets, portable electronics, digital cameras, MP3 players and computer peripherals. The SOD-923 package occupies roughly 0.8mm x 0.6mm of board space at about 0.001g (marking S/S), and the -7 suffix denotes 10,000 units on 7-inch tape and reel. The device is totally lead-free, halogen and antimony free ("Green"), and operates from -65°C to +150°C.

Note: Refer to the official Diodes Incorporated D5V0L1B2S9 datasheet for full electrical parameters and curves. Subject to change without notice; verify all parameters before final design.

The D5V0L1B2S9-7 comes in the SOD-923 case - a two-terminal leadless miniature outline of roughly 0.8mm x 0.6mm body and about 0.001g, molded in "Green" UL 94V-0 compound. Terminals are matte tin over alloy 42 leadframe (lead-free plating), solderable per MIL-STD-202 Method 208.

Moisture sensitivity is Level 1 (J-STD-020), so no dry-pack handling restrictions apply. The -7 suffix is 10,000 units on 7-inch, 8mm tape and reel. Marking code is S/S; being bidirectional and symmetric, the device has no polarity bar and orientation is free.

The device has two interchangeable terminals - the internal back-to-back junctions make it fully symmetric:

• Pin 1: Protection terminal - connect to the protected line or ground.
• Pin 2: Protection terminal - connect to the remaining node (line or ground).

Because the device is bidirectional, either pin may face the line; no polarity marking is needed. For best results place it directly at the connector with the shortest possible loop to ground. The device schematic below shows the back-to-back topology between the two pins.

The following ESD protection diodes are listed for reference. Verify working voltage, direction, 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 broad circuit-protection portfolio spanning TVS, ESD arrays and Schottky devices in some of the industry's smallest packages. Its protection parts serve consumer, computing, industrial and automotive interface designs worldwide.

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.