Diodes Incorporated DT1240-08LP3810-7

Overview

DT1240-08LP3810 from Diodes Incorporated is an 8-channel low-capacitance TVS diode array designed for high-speed I/O line protection in serial interface applications. It delivers 6V reverse breakdown voltage, 5.5A peak pulse current (IEC 61000-4-5), 0.6pF typical channel input capacitance, and ±14kV contact ESD immunity per IEC 61000-4-2 - deployed in USB 3.0, HDMI 2.0, and Serial ATA ports.

For engineers reviewing the DT1240-08LP3810 datasheet, DT1240-08LP3810 pinout, DT1240-08LP3810 application, or DT1240-08LP3810 equivalent, key selection criteria include low clamping voltage (9.4V at 5.5A), ultra-low dynamic resistance (0.30Ω), precise 8-channel symmetry, U-DFN3810-9 package thermal performance, and compliance with automotive-grade change control protocols upon request.

Technical Context

This device implements a monolithic silicon avalanche diode array with eight identical bidirectional TVS channels, each featuring matched V_BR ≥ 6V and low-leakage design (I_R ≤ 0.5μA at 5.5V). Its architecture enables simultaneous transient suppression across parallel high-speed data lanes without signal integrity degradation.

The U-DFN3810-9 (Type B) package integrates nine terminals - eight I/O pins plus common V_SS - optimized for minimal parasitic inductance and thermal resistance (R_θJA = 360°C/W on FR-4). TLP-tested dynamic resistance of 0.30Ω ensures rapid voltage clamping during 100ns ESD events.

Key Specifications

Pinout & Package

Package: U-DFN3810-9 (Type B), 3.8mm × 1.0mm × 0.5mm, lead-free NiPdAu terminations, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-channel low-capacitance TVS array applications.

Compared with SZ1.8SMCG-TP and SP1006-08UTG, DT1240-08LP3810 offers superior combination of low capacitance, tight clamping voltage, and industry-leading dynamic resistance - making it optimal for next-generation 5–10Gbps serial interfaces where signal fidelity and surge margin are co-constrained.

Availability

DT1240-08LP3810 is available at Aetrix Electronics and suitable for USB 3.0, HDMI 2.0, and Serial ATA III applications requiring stable component supply, long-term lifecycle assurance, and traceable green manufacturing.

Supply support for DT1240-08LP3810 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.

The DT1240-08LP3810 belongs to Diodes' high-speed ESD protection product line, engineered specifically for signal integrity preservation in multi-gigabit serial interfaces while meeting stringent automotive and industrial reliability standards.

FAQ

What is the maximum operating temperature range for DT1240-08LP3810?

The DT1240-08LP3810 operates reliably from −55°C to +150°C, validated per JEDEC JESD22-A104 and qualified for extended thermal cycling in automotive under-hood and industrial control environments. This rating applies to both continuous operation and transient suppression duty cycles without derating up to 125°C ambient.

Does DT1240-08LP3810 support AEC-Q200 qualification?

While DT1240-08LP3810 is manufactured in IATF 16949-certified facilities and supports PPAP documentation, it is not pre-qualified to AEC-Q200. Customers requiring formal qualification can initiate a custom qualification program with Diodes Incorporated using this part number as the baseline device.

How does the U-DFN3810-9 package affect PCB layout for high-speed signals?

The U-DFN3810-9's 3.8mm × 1.0mm footprint and center-V_SS pad enable symmetrical, short-length routing to all eight I/O pins - reducing stub length to <0.8mm and minimizing impedance discontinuity. Recommended pad layout follows Diodes' published outline with 0.3mm solder mask dams to prevent bridging.

Can DT1240-08LP3810 be used for unidirectional protection?

No - DT1240-08LP3810 is inherently bidirectional due to its symmetrical avalanche diode structure across each I/O–V_SS path. It provides equal clamping for positive and negative transients, making it unsuitable for DC-biased unidirectional lines unless external biasing circuitry is added, which compromises ESD performance.