onsemi NP2300SAT3G

Overview

NP2300SAT3G from onsemi is a bidirectional thyristor surge protector (TSPD) designed for overvoltage clamping in telecom line interfaces. It features 190 V peak off-state voltage (V_DRM), 260 V breakover voltage (V_BO), 4.0 V on-state voltage at 1 A, 150 mA holding current, and supports GR-1089-CORE and IEC 61000-4-5 surge immunity up to 75 A(pk) on 10×360 µs waveform - deployed in central office and customer premises equipment protection circuits.

For engineers reviewing the NP2300SAT3G datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional crowbar action, SMB package compatibility, 150°C operating junction temperature, low 36 pF capacitance at 1 MHz, and compliance with ITU-T K.20/K.21 for telecom surge robustness.

Technical Context

The NP2300SAT3G operates as a voltage-triggered, self-latching crowbar device that transitions from high-impedance blocking state to low-impedance conduction when transient voltage exceeds V_BO = 260 V in either polarity. Its bidirectional symmetry eliminates need for back-to-back diac or dual-device configurations.

It sustains conduction until current falls below I_H = 150 mA, with V_T = 4.0 V limiting power dissipation during surge events. Critical dv/dt rating of 5.0 kV/s prevents false triggering from fast-rising noise, while thermal resistance R_θJA = 90 °C/W enables reliable operation under repeated surges on standard FR4 PCB layouts.

Key Specifications

Pinout & Package

SMB package (JEDEC DO-214AA, Case 403C), surface-mount, bidirectional two-terminal device with MT1 and MT2 terminals - no gate control; symmetric layout enables orientation-agnostic PCB placement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar thyristor surge protector applications.

Compared with NP2100SAT3G and NP2600SAT3G, the NP2300SAT3G provides optimal balance for 190–200 V nominal telecom line applications - offering sufficient margin above 170 V peak ringing while avoiding excessive V_BO that could delay clamping during fast transients.

Availability

NP2300SAT3G is available at Aetrix Electronics and suitable for DSL line card protection, central office interface design, and VoIP gateway development requiring stable component supply and long-term lifecycle support.

Supply support for NP2300SAT3G 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 specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and communications markets.

The NP Series thyristor surge protectors were engineered specifically for telecom infrastructure protection - delivering high-surge-current capability, bidirectional symmetry, and regulatory compliance in compact SMB packages for central office, access network, and customer premises equipment.

FAQ

What is the maximum surge current rating for NP2300SAT3G under GR-1089-CORE 10×360 µs waveform?

The NP2300SAT3G is rated for 75 A(pk) under the GR-1089-CORE 10×360 µs double-exponential surge waveform. This value is specified in the "SURGE DATA RATINGS" table and validated per Telcordia test methodology. The device maintains functional integrity after this stress level when operated within its thermal limits and allowed proper cooldown between events. NP2300SAT3G achieves this performance without external heat sinking due to its 90 °C/W junction-to-ambient thermal resistance.

Does NP2300SAT3G require a gate trigger signal to operate?

No, the NP2300SAT3G is a gateless, voltage-triggered thyristor surge protector. It relies solely on intrinsic breakover voltage (V_BO = 260 V) to initiate crowbar action - no external control signal, biasing, or timing circuitry is needed. This simplifies protection design and eliminates failure modes associated with gate drive components. NP2300SAT3G functions identically regardless of polarity, making it ideal for AC-coupled telecom line protection.

Can NP2300SAT3G be used in place of a unidirectional TVS diode?

NP2300SAT3G is not a drop-in replacement for unidirectional TVS diodes due to its crowbar latching behavior and bidirectional architecture. Unlike TVS diodes that clamp and reset automatically, NP2300SAT3G remains conductive until current falls below 150 mA. It is intended for series-limited surge paths - such as behind line transformers - where natural current decay ensures reset. NP2300SAT3G offers superior energy handling but requires compatible circuit topology.

What is the capacitance of NP2300SAT3G and why does it matter for telecom applications?

The NP2300SAT3G exhibits 36 pF typical capacitance at 1 MHz and 2 Vdc bias. This low value minimizes insertion loss and phase distortion on high-frequency telecom signals such as VDSL2 (up to 30 MHz) and G.fast (up to 212 MHz). Excessive capacitance would degrade return loss and increase crosstalk; NP2300SAT3G's 36 pF enables direct integration into line interface circuits without equalization or layout compensation - a key advantage over higher-capacitance MOVs or older TSPDs.

Is NP2300SAT3G compliant with RoHS and lead-free soldering standards?

Yes, NP2300SAT3G is marked with "G" per onsemi's ordering nomenclature, indicating Pb-free construction and full RoHS compliance. Its SMB package is qualified for standard lead-free reflow profiles per J-STD-020, with peak temperatures up to 260 °C. The device meets JEDEC moisture sensitivity level MSL-1 and requires no pre-bake. NP2300SAT3G's RoHS status is documented in the official datasheet revision and supported by onsemi's material declarations.