Toshiba Semiconductor and Storage DF2S6M5CT,L3F

Overview

DF2S6M5CT from Toshiba Electronic Devices & Storage Corporation is an ESD protection diode designed for high-speed signal lines in mobile interfaces, featuring a working peak reverse voltage of 5.0 V, ±20 kV IEC61000-4-2 contact ESD rating, 0.6 pF typical capacitance, 0.3 Ω dynamic resistance, and ultra-compact CST2 (1.0 mm × 0.6 mm) packaging. It safeguards ICs in smartphones and tablets against electrostatic discharge and noise.

For engineers reviewing the DF2S6M5CT datasheet, DF2S6M5CT pinout, DF2S6M5CT application, or DF2S6M5CT equivalent, key selection criteria include low clamping voltage (9.4 V @ 2.5 A), snapback-triggered protection, sub-1 pF capacitance for USB/MIPI signal integrity, and compatibility with 5 V logic rails in space-constrained layouts.

Technical Context

The DF2S6M5CT employs silicon epitaxial planar technology with snapback-triggered clamping to achieve low dynamic resistance (0.3 Ω typ.) and stable clamping voltage (9.4 V @ 2.5 A). Its bidirectional structure enables symmetrical ±20 kV ESD protection per IEC61000-4-2 (contact/air).

Designed specifically for 5 V signal line protection, it operates within a VRWM ≤ 5.0 V range and delivers <0.9 pF max total capacitance at 0 V bias-critical for preserving signal rise/fall times in high-speed digital interfaces such as USB 2.0 and MIPI D-PHY.

Key Specifications

Pinout & Package

DF2S6M5CT is housed in the CST2 ultra-compact surface-mount package (1.0 mm × 0.6 mm, 0.7 mg typical weight), optimized for mobile PCB real estate constraints. The device uses a bidirectional two-terminal configuration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ESD protection applications.

Compared with TPD2E001DRYR and ESD5Z5.0T1G, the DF2S6M5CT provides the lowest clamping voltage (9.4 V) and smallest footprint (1.0 × 0.6 mm) among these three 5 V-rated ESD diodes-making it optimal for ultra-dense mobile PCBs where both signal integrity and layout area are tightly constrained.

Availability

DF2S6M5CT is available at Aetrix Electronics and suitable for smartphone interface protection, tablet MIPI lane hardening, and notebook USB port safeguarding requiring stable component supply across high-volume production cycles.

Supply support for DF2S6M5CT 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

Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs with emphasis on reliability, miniaturization, and automotive-grade robustness.

The DF2S6M5CT belongs to Toshiba's CST2-series ESD protection portfolio, engineered specifically for high-speed, space-constrained mobile interfaces requiring sub-1 pF capacitance and ±20 kV immunity.

FAQ

What is the maximum working peak reverse voltage specified for DF2S6M5CT?

The DF2S6M5CT has a maximum working peak reverse voltage (VRWM) of 5.0 V, verified per Toshiba's Electrical Characteristics table. This rating ensures reliable blocking behavior on standard 5 V signal lines without leakage current exceeding 0.1 µA. The DF2S6M5CT is therefore suited for USB 2.0, HDMI CEC, and other 5 V logic interfaces where overvoltage tolerance must be tightly controlled.

Does DF2S6M5CT support bidirectional ESD protection?

Yes, DF2S6M5CT provides symmetrical bidirectional ESD protection with ±20 kV rating per IEC61000-4-2 (contact and air). Its internal structure enables identical clamping behavior for positive and negative transients, making it ideal for differential or single-ended signal lines subject to random polarity ESD events. The DF2S6M5CT achieves this without external biasing or polarity-specific routing.

What is the typical dynamic resistance of DF2S6M5CT and why does it matter?

The DF2S6M5CT exhibits a typical dynamic resistance (RDYN) of 0.3 Ω, measured using TLP characterization between 16 A and 30 A. This low value minimizes the IR voltage overshoot during fast ESD pulses, ensuring that protected ICs experience less than 9.4 V clamping even at 2.5 A peak current. For high-speed interfaces, low RDYN directly improves protection margin and reduces risk of latch-up in downstream transceivers.

How does the 0.6 pF typical capacitance of DF2S6M5CT impact high-speed signal integrity?

The DF2S6M5CT's 0.6 pF typical capacitance at 1 MHz introduces negligible loading on high-speed signals-preserving rise/fall times and eye diagram margins in USB 2.0 (480 Mbps) and MIPI D-PHY (1.5 Gbps) applications. This low value avoids signal attenuation or jitter that could occur with higher-capacitance alternatives, making DF2S6M5CT especially valuable in compact mobile PCBs where trace length and impedance control are limited.

What package type is used for DF2S6M5CT and what are its dimensions?

The DF2S6M5CT uses the CST2 package, a Toshiba-defined ultra-compact surface-mount outline measuring 1.0 mm × 0.6 mm with a typical weight of 0.7 mg. Its small footprint allows placement directly at I/O connectors or IC pads in smartphones and tablets, minimizing stub length and inductance in the ESD current path. The DF2S6M5CT's CST2 package is distinct from industry-standard SOD-523 or SC-79 footprints and requires dedicated land pattern design per Toshiba's documentation.