onsemi ESD11N5.0ST5G

Overview

ESD11N5.0ST5G from onsemi is a bidirectional ESD protection diode in DSN2 (0201) package, designed for ultra-low-capacitance transient suppression on high-speed signal lines. It features 0.6 pF typical capacitance, 5.0 V stand-off voltage, 12 V clamping voltage at 1 A peak pulse current, <1 ns response time, and IEC61000−4−2 Level 4 (±8 kV contact / ±15 kV air) compliance - enabling robust protection for USB 2.0 high-speed and antenna interfaces.

For engineers reviewing the ESD11N5.0ST5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage under 12 V at 1 A, sub-1 pF capacitance for minimal signal integrity impact, DSN2 footprint compatibility, and verified IEC61000−4−2 Level 4 performance without board-level derating.

Technical Context

The ESD11N5.0ST5G operates as a bidirectional TVS diode with symmetrical breakdown behavior - V_BR ≥5.8 V (min) in both polarities at 1 mA test current. Its low-leakage design delivers ≤1.0 µA reverse current at 5.0 V working voltage, ensuring minimal loading on sensitive analog or RF nodes.

Clamping is achieved via avalanche conduction during ESD transients, with measured VC = 12 V max at IPP = 1 A per IEC61000−4−2 waveform. The device sustains ±8 kV contact ESD events while maintaining stable junction temperature within −40°C to +125°C operating range and meets MSL 1 reflow requirements up to 260°C.

Key Specifications

Pinout & Package

DSN2 package: ultra-compact 2-terminal leadless chip-scale package with bottom-side solderable terminals; no polarity marking - bidirectional symmetry confirmed by electrical characterization and schematic symbol.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPD2E001DRYR and SP1001-01UTG, the ESD11N5.0ST5G offers the optimal balance of low clamping (12 V), ultra-low capacitance (0.6 pF), and strict DSN2 mechanical compatibility - making it preferred for space-constrained USB 2.0 and cellular antenna protection where board layout reuse is critical.

Availability

ESD11N5.0ST5G is available at Aetrix Electronics and suitable for USB 2.0 interface protection, cellular antenna feed-line safeguarding, and HDMI TMDS channel ESD hardening requiring stable component supply and consistent parametric performance across production lots.

Supply support for ESD11N5.0ST5G 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

onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.

The ESD11N series is part of onsemi's dedicated ESD protection portfolio, engineered specifically for ultra-low-capacitance, high-frequency signal line protection in mobile, computing, and wireless infrastructure platforms.

FAQ

What is the maximum clamping voltage of the ESD11N5.0ST5G under IEC61000−4−2 conditions?

The ESD11N5.0ST5G has a maximum clamping voltage of 12 V when subjected to a 1 A peak pulse current per the IEC61000−4−2 waveform. This value is measured across the device terminals during standardized ESD testing and ensures downstream ICs remain within safe operating voltage limits during ±8 kV contact discharge events. The ESD11N5.0ST5G maintains this clamping performance consistently across its full operating temperature range.

Does the ESD11N5.0ST5G require polarity-aware PCB layout?

No - the ESD11N5.0ST5G is a bidirectional ESD protection diode with symmetrical electrical characteristics in both directions. Its V_BR is ≥5.8 V (min) for both polarities at 1 mA, and its clamping behavior is identical for positive and negative transients. Therefore, the ESD11N5.0ST5G can be placed without orientation constraints on PCBs, simplifying layout and assembly for differential or AC-coupled signal lines.

Can the ESD11N5.0ST5G be used on 5 V logic signal lines?

Yes - the ESD11N5.0ST5G has a 5.0 V stand-off voltage (VRWM), meaning it remains non-conductive under steady-state 5 V operation with leakage ≤1.0 µA. Its 5.8 V minimum breakdown voltage provides sufficient margin above 5 V rail, and its 12 V clamping voltage protects downstream 5 V-tolerant receivers during ESD events. The ESD11N5.0ST5G is therefore well-suited for protecting 5 V GPIO, UART, or SPI lines in portable electronics.

What is the thermal resistance of the ESD11N5.0ST5G, and how does it affect power handling?

The ESD11N5.0ST5G has a junction-to-ambient thermal resistance (R_JA) of 400°C/W on FR-5 board. However, due to its intended use in short-duration ESD pulses (<100 ns), thermal mass and transient power dissipation dominate over steady-state heating. Its 250 mW total power dissipation rating applies only to continuous DC conditions - the device safely handles much higher instantaneous power (e.g., 12 V × 1 A = 12 W) during nanosecond-scale ESD events, as confirmed by IEC61000−4−2 Level 4 validation.

Is the ESD11N5.0ST5G compatible with standard 0201 pick-and-place equipment?

Yes - the ESD11N5.0ST5G uses the DSN2 package (0.6 mm × 0.3 mm), which aligns with JEDEC-standard 0201 footprint dimensions. onsemi recommends automated pick-and-place systems with ±0.05 mm placement tolerance and dual-image optical alignment to verify bottom-terminal positioning. The ESD11N5.0ST5G self-aligns during reflow due to solder surface tension, and its MSL 1 rating supports standard Pb-free reflow profiles without baking.