onsemi ESD10201MUT5G

Overview

ESD10201MUT5G from onsemi is a bidirectional ultra-low-capacitance ESD protection diode in a 0201 X3DFN2 package, rated for ±21 V working voltage, 0.3 pF typical junction capacitance, and IEC 61000-4-2 Level 4 (±12 kV contact / ±15 kV air) ESD protection-designed for RF signal path protection in space-constrained wireless front-ends.

For engineers reviewing the ESD10201MUT5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage linearity under TLP stress (37.7 V @ +8 A), sub-0.4 pF capacitance stability over DC–10 GHz, dynamic resistance of 0.44 Ω, and compatibility with 0.62 × 0.32 mm PCB footprints in antenna switch and PA bias lines.

Technical Context

The ESD10201MUT5G implements a symmetric dual-diode structure between pins 1 and 2, enabling bidirectional transient suppression without polarity dependence. Its low dynamic resistance (0.44 Ω) and fast response ensure effective clamping during IEC 61000-4-2 events while preserving RF signal integrity up to 8.5 GHz.

Capacitance remains linear across reverse bias (0–21 V), with only 0.3 pF at 0 V and <0.5 pF at 21 V-critical for maintaining insertion loss below −0.335 dB at 8.5 GHz and minimizing detuning in impedance-matched RF paths such as LTE/5G antenna switches and NFC couplers.

Key Specifications

Pinout & Package

X3DFN2 (Case 152AF) is a 2-terminal, bottom-terminated micro-package with no exposed pad; terminals are co-planar, solderable on top surface only. Body dimensions: 0.62 mm × 0.32 mm × 0.3 mm, pitch = 0.355 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ESD9B5.0ST5G and CM1213-04SO, the ESD10201MUT5G uniquely delivers sub-0.35 pF capacitance in a 0.62 mm × 0.32 mm footprint with ±21 V rating-making it the only option qualified for ESD hardening of 5G FR1 antenna feeds and high-band PA bias networks.

Availability

ESD10201MUT5G is available at Aetrix Electronics and suitable for RF front-end design, wireless charging coil interface protection, and NFC antenna circuitry requiring stable component supply and guaranteed long-term availability.

Supply support for ESD10201MUT5G 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 supplier focused on energy-efficient technologies for automotive, industrial, cloud, and intelligent power systems.

The ESD10201MUT5G belongs to onsemi's low-capacitance ESD protection diode family, engineered specifically for preserving RF signal fidelity in high-frequency wireless infrastructure and mobile device front-ends.

FAQ

What is the maximum clamping voltage of the ESD10201MUT5G under IEC 61000-4-2 contact discharge?

The ESD10201MUT5G achieves a clamping voltage of ≤40.4 V under ±16 A TLP conditions, which correlates to IEC 61000-4-2 ±8 kV contact discharge testing. Per Figures 1 and 2 in the official datasheet, measured clamping remains below 42 V for both polarities at full Level 4 stress. This value is confirmed using transmission line pulse (TLP) characterization per ANSI/ESD STM5.5.1, and applies directly to the ESD10201MUT5G in its X3DFN2 package with standard PCB layout.

Does the ESD10201MUT5G support bidirectional ESD protection?

Yes, the ESD10201MUT5G is a symmetric bidirectional ESD protection diode. Its internal dual-diode architecture connects anode-to-cathode between pins 1 and 2, allowing equal clamping performance for positive and negative transients. Electrical Characteristics confirm identical VC values for +8 A and −8 A TLP pulses (37.7 V and −38.4 V), and the device is explicitly rated for ±12 kV contact ESD per IEC 61000-4-2. This symmetry makes ESD10201MUT5G suitable for AC-coupled RF paths and differential interfaces.

What is the junction capacitance of the ESD10201MUT5G at 21 V reverse bias?

The junction capacitance of the ESD10201MUT5G is 0.3 pF at 0 V and increases only marginally with reverse bias-measured at <0.45 pF up to 21 V per Figure 10 in the datasheet. This linear C-V behavior is critical for RF applications, ensuring minimal detuning of antenna matching networks. The value is verified at 1 MHz and applies to the ESD10201MUT5G in its standard X3DFN2 configuration with recommended PCB pad geometry.

Is the ESD10201MUT5G RoHS compliant and lead-free?

Yes, the ESD10201MUT5G is Pb-free, halogen-free/BFR-free, and fully RoHS compliant per EU Directive 2011/65/EU. The "G" suffix in the part number denotes green packaging, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. This compliance is documented in the official ESD10201/D datasheet revision 1, and applies to all units shipped in the 10,000-piece tape-and-reel format (ESD10201MUT5G).

What is the thermal resistance (R_JA) of the ESD10201MUT5G?

The thermal resistance, junction-to-ambient (R_JA), of the ESD10201MUT5G is 400°C/W when mounted on a standard FR-4 PCB with the recommended minimum pad size per the datasheet's Package Dimensions section. This value assumes natural convection cooling and no additional copper pour or thermal vias. R_JA directly impacts power derating: at 25°C ambient, the device supports 250 mW total power dissipation, but this must be reduced above 25°C per the derating curve in the Maximum Ratings table. This specification applies to the ESD10201MUT5G in its native X3DFN2 package.