Diodes Incorporated TB3100L-13-F

Overview

TB3100L-13-F from Diodes Incorporated is a bidirectional surface-mount thyristor surge protective device (TSPD) designed for primary-level overvoltage clamping in telecom and data line interfaces. It features a 275V maximum repetitive off-state voltage (VDRM), 30A peak pulse current at 10/1000μs, 350V breakover voltage (VBO), 3.5V on-state voltage at 1A, and 40pF off-state capacitance - enabling robust GR-1089-CORE and IEC 61000-4-5 compliance in DSL, T1/E1, and PoE-powered equipment.

For engineers reviewing the TB3100L-13-F datasheet, TB3100L-13-F pinout, TB3100L-13-F application, or TB3100L-13-F equivalent, key selection criteria include stand-off voltage margin vs. line operating voltage, peak pulse current rating under 8/20μs vs. 10/1000μs waveforms, off-state capacitance impact on high-frequency signal integrity, and SMB package thermal performance in dense PCB layouts.

Technical Context

This TSPD operates as a voltage-triggered crowbar device: it remains highly resistive below 275V (VDRM), exhibits <5μA leakage at rated voltage, and switches to low-impedance conduction when transient voltage exceeds 350V (VBO). Its bidirectional symmetry enables protection of AC-coupled lines without polarity concerns.

Thermal design relies on its 30°C/W junction-to-lead resistance and SMB package's ability to dissipate energy during transient events. The 0.1%/°C positive temperature coefficient of VBR ensures predictable voltage derating across –40°C to +150°C junction temperature range.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), surface-mount, bidirectional, polarity-free case with matte tin-plated terminals. Dimensions: 4.06–4.57mm (L) × 3.30–3.94mm (W) × 1.96–2.21mm (H); UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMJ27CA and TPSMB33CA, TB3100L-13-F delivers lower clamping voltage under sustained surge, inherent bidirectionality without external circuitry, and telecom-specific certifications - making it uniquely suited for AC-coupled data line protection where signal fidelity and regulatory compliance are mandatory.

Availability

TB3100L-13-F is available at Aetrix Electronics and suitable for DSL line interface protection, T1/E1 data line protection, and PoE power sourcing equipment requiring stable component supply and long-term lifecycle support.

Supply support for TB3100L-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.

TB3100L-13-F belongs to the TB-series bidirectional TSPD product line, engineered specifically for primary-level surge immunity in telecom infrastructure and data communications equipment operating up to 275V RMS line voltages.

FAQ

What is the maximum continuous operating voltage for TB3100L-13-F?

The maximum repetitive off-state voltage (VDRM) is 275V. This is the highest RMS or DC voltage the device can block continuously without triggering. Operation above this voltage risks unintended conduction. For AC line applications, ensure peak voltage (e.g., 275V × √2 ≈ 389V) remains below the 350V breakover voltage (VBO) with appropriate safety margin.

Does TB3100L-13-F require a series current-limiting resistor?

No - unlike TVS diodes, this thyristor-based TSPD latches ON and maintains low on-state voltage (3.5V at 1A) until current falls below holding current (150–800mA). A series resistor is unnecessary for basic crowbar operation but may be used to limit follow current in low-impedance AC sources to prevent device damage during sustained overvoltage.

How does TB3100L-13-F differ from standard TVS diodes in surge response?

TB3100L-13-F uses thyristor technology to provide low-clamping-voltage latching behavior: once triggered, it stays ON until current drops below holding current. Standard TVS diodes clamp transient voltage but return immediately to high-impedance state after the surge ends. This makes TB3100L-13-F superior for sustained overvoltages like AC line faults, while TVS diodes excel at nanosecond-scale ESD.

Is TB3100L-13-F compliant with RoHS and halogen-free standards?

Yes - TB3100L-13-F features lead-free matte tin plating and green molding compound containing no halogens or antimony, meeting EU Directive 2002/95/EC (RoHS) and JEDEC J-STD-020 moisture sensitivity Level 1. The "-F" suffix explicitly denotes RoHS-compliant finish per Diodes Incorporated's ordering nomenclature.