Diodes Incorporated TB1800M-13-F

Overview

TB1800M-13-F from Diodes Incorporated is a bidirectional surface-mount thyristor surge protection device (TSPD) designed for telecom and data line transient suppression. It features a 160V maximum repetitive off-state voltage (VDRM), 50A peak pulse current (10/1000μs), 220V breakover voltage (VBO), 3.5V on-state voltage at 1A, and 90pF off-state capacitance - enabling robust GR-1089-CORE and IEC 61000-4-5 compliance in DSL, T1/E1, and PoE interface protection.

For engineers reviewing the TB1800M-13-F datasheet, TB1800M-13-F pinout, TB1800M-13-F application, or TB1800M-13-F equivalent, key selection criteria include stand-off voltage margin vs. line operating voltage, hold current stability over temperature, surge waveform derating (e.g., 250A @ 8/20μs), and SMB package thermal resistance (RθJL = 20°C/W) for PCB layout and power dissipation planning.

Technical Context

This TSPD operates as a voltage-triggered crowbar device: it remains high-impedance below VDRM (160V), triggers at VBO (220V ±10%), clamps with low VT (≤3.5V), and sustains conduction until current falls below IH (150–800mA). Its oxide-glass passivated junction ensures stable breakdown characteristics across -40°C to +150°C.

Unlike TVS diodes, it exhibits positive temperature coefficient for VBR (0.1%/°C), requiring careful coordination with upstream current limiting. Bidirectional symmetry eliminates polarity concerns, and its 90pF off-state capacitance minimizes signal distortion on broadband lines up to ~100 MHz.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), surface-mount, bidirectional, non-polarized device with two terminals. Molded plastic case rated UL 94V-0; weight ≈0.093g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ160A and TPSMF160A, TB1800M-13-F delivers superior energy handling (50A vs. ≤30A), inherent bidirectionality, and lower clamping (3.5V vs. ≥64V), making it optimal for telecom-grade primary protection where crowbar action and waveform fidelity are critical.

Availability

TB1800M-13-F is available at Aetrix Electronics and suitable for DSL line protection, T1/E1 interface hardening, and PoE power sourcing equipment requiring stable component supply and full GR-1089-CORE/IEC 61000-4-5 compliance.

Supply support for TB1800M-13-F 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, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, telecom, and consumer markets.

TB1800M-13-F belongs to the TB-series bidirectional thyristor surge protectors, engineered specifically for telecom infrastructure and data line applications demanding high surge immunity, low capacitance, and UL-recognized reliability.

FAQ

What is the maximum operating temperature for TB1800M-13-F?

The TB1800M-13-F has a specified junction temperature range of -40°C to +150°C and a storage temperature range of -55°C to +150°C. Its thermal resistance from junction to lead is 20°C/W, enabling reliable operation at full rated surge current when mounted on adequate PCB copper area per the SMB pad layout guidelines.

Does TB1800M-13-F require external current limiting?

Yes - like all thyristor surge protectors, TB1800M-13-F must be used with series impedance (e.g., PTC thermistor or wire-wound resistor) to limit follow current after triggering. Without current limiting, sustained conduction could exceed ITSM (30A) and cause thermal failure. The device holds until current drops below 150–800mA.

How does TB1800M-13-F differ from standard TVS diodes?

TB1800M-13-F is a thyristor-based crowbar device with latching behavior and low on-state voltage (≤3.5V), whereas TVS diodes are clamp-type devices with higher clamping voltage (e.g., >60V) and no holding current. This makes TB1800M-13-F more effective for high-energy surges where low clamping and self-sustaining conduction are required.

Is TB1800M-13-F compliant with RoHS and halogen-free standards?

Yes - TB1800M-13-F features lead-free plating (matte tin finish), complies with EU Directive 2002/95/EC (RoHS), and uses green molding compound free of halogens and antimony, meeting IPC-4101 definition of "halogen-free" and supporting environmentally regulated designs.