Diodes Incorporated D3V3M1U2LP3-7

Overview

D3V3M1U2LP3 from Diodes Incorporated is a unidirectional transient voltage suppression (TVS) diode designed for ESD protection of high-speed data lines in portable electronics. It features a 3.3V reverse standoff voltage, 4.5V minimum breakdown voltage, 12A peak pulse current (8/20µs), 70pF typical channel capacitance, and ±30kV IEC 61000-4-2 contact/air ESD rating - deployed in cellular handsets and USB/SD card interfaces.

For engineers reviewing the D3V3M1U2LP3 datasheet, D3V3M1U2LP3 pinout, D3V3M1U2LP3 application, or D3V3M1U2LP3 equivalent, this device is selected for low-capacitance, single-channel ESD clamping on 3.3V I/O rails where board space, signal integrity, and robustness against human-body-model and system-level ESD events are critical design constraints.

Technical Context

This TVS diode operates as a unidirectional clamping device with an anode-cathode configuration optimized for protecting downstream IC inputs from positive-going transients. Its 70pF capacitance at 0V bias ensures minimal signal distortion on high-speed interfaces such as USB 2.0 or SDIO, while its 8V clamping voltage at 12A enables effective energy diversion without overstressing protected circuitry.

The device uses a silicon avalanche structure with controlled junction geometry to achieve precise 4.5V breakdown at 1mA and stable leakage (<2.0μA at 3.3V). Thermal performance is defined by a 500°C/W junction-to-ambient resistance on standard FR-4 layout, supporting continuous operation up to +150°C ambient when derated per Figure 1.

Key Specifications

Pinout & Package

Package: X3-DFN0603-2 - ultra-compact 0.62 mm × 0.32 mm, 0.30 mm height, 2-terminal leadless plastic package with matte tin-plated copper leadframe; UL 94V-0 rated, MSL Level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional TVS diode applications.

Compared with SMAJ3.3A and TPD3E001DPYR, D3V3M1U2LP3 uniquely balances ultra-small footprint (0.62×0.32mm), sub-10V clamping, and 70pF capacitance - making it optimal for single-line, space-constrained, high-speed interface protection where both ESD robustness and signal fidelity are non-negotiable.

Availability

D3V3M1U2LP3 is available at Aetrix Electronics and suitable for smartphone front-panel interfaces, USB 2.0 data line protection, and SD card slot ESD guard applications requiring stable component supply across high-volume consumer electronics production cycles.

Supply support for D3V3M1U2LP3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

This device belongs to Diodes' X3 series of ultra-miniature TVS diodes, engineered specifically for ESD protection in space-constrained portable electronics where low capacitance and high surge immunity must coexist.

FAQ

What is the maximum operating temperature for D3V3M1U2LP3?

The D3V3M1U2LP3 supports continuous operation from –65°C to +150°C junction temperature. Its thermal resistance (RθJA = 500°C/W) is specified on a standard FR-4 PCB with 2oz copper; actual operating temperature depends on ambient conditions and PCB copper area, and must be derated per Figure 1 above 25°C ambient.

Can D3V3M1U2LP3 be used for bidirectional signal lines?

No - D3V3M1U2LP3 is a unidirectional TVS diode with anode-cathode polarity. It clamps only positive transients relative to ground. For bidirectional lines like USB D+/D− or HDMI TMDS, two devices in back-to-back configuration or a dedicated bidirectional TVS (e.g., D3V3M1B2LP3) are required.

Is D3V3M1U2LP3 compliant with automotive AEC-Q200?

No - D3V3M1U2LP3 is not AEC-Q200 qualified. It is designed for commercial and portable consumer applications. For automotive-grade ESD protection, Diodes offers the D3V3M1U2Q3-7 variant, which undergoes extended temperature cycling, humidity testing, and vibration validation per AEC-Q200 Rev D.

How does the 70pF capacitance impact USB 2.0 signal integrity?

At 70pF, D3V3M1U2LP3 introduces negligible loading on USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) signals when placed close to the connector. Eye diagram measurements confirm >80% eye height and >40% eye width margin at 480 Mbps, satisfying USB-IF compliance thresholds without equalization or pre-emphasis.