Diodes Incorporated TB0900M-13-F

Overview

TB0900M-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 75 V maximum repetitive off-state voltage (VDRM), 50 A peak pulse current (10/1000 µs), 98 V breakover voltage (VBO), 3.5 V on-state voltage at 1 A, and 140 pF off-state capacitance - enabling robust GR-1089-CORE and IEC 61000-4-5 compliance in DSL, T1/E1, and analog telephone interfaces.

For engineers reviewing the TB0900M-13-F datasheet, TB0900M-13-F pinout, TB0900M-13-F application, or TB0900M-13-F equivalent, key selection criteria include stand-off voltage margin vs. line operating voltage, peak surge current rating under standardized waveforms (e.g., 8/20 µs vs. 10/1000 µs), off-state capacitance impact on signal integrity, holding current stability over temperature, and SMB package thermal performance in high-density PCB layouts.

Technical Context

This bidirectional TSPD operates as a voltage-triggered crowbar device: it remains in high-impedance off-state until applied voltage exceeds its symmetric breakover threshold (~98 V), then latches into low-voltage conduction mode until current falls below holding current (150–800 mA). Its oxide-glass passivated junction ensures stable VBO over temperature with +0.1 %/°C coefficient.

Unlike unidirectional TVS diodes, the TB0900M-13-F provides symmetrical clamping without polarity constraints, eliminating need for back-to-back configurations. Its 20 °C/W junction-to-lead thermal resistance supports sustained energy dissipation during multi-pulse surge events when mounted on adequate copper area.

Key Specifications

Pinout & Package

Package: SMB (DO-214AA), surface-mount, bidirectional, no polarity marking. Molded plastic case rated UL 94V-0; weight ≈ 0.093 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SM15T75A and P6SMB75CA, TB0900M-13-F delivers true latching behavior for reliable high-energy surge shunting, lower off-state capacitance for broadband signal preservation, and single-device bidirectional simplicity - making it optimal for telecom line protection where GR-1089-CORE compliance and automatic recovery are mandatory.

Availability

TB0900M-13-F is available at Aetrix Electronics and suitable for DSL line interface protection, T1/E1 data line protection, and analog telephone line interface applications requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.

Supply support for TB0900M-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

TB0900M-13-F belongs to the TBxxxM family of bidirectional thyristor surge protectors, engineered specifically for telecom infrastructure applications demanding high surge robustness, low capacitance, and regulatory compliance with GR-1089-CORE, IEC 61000-4-5, and UL497B.

FAQ

What is the minimum circuit current required to maintain conduction after TB0900M-13-F triggers?

The device requires load current to remain above its holding current (I_H) to stay latched in on-state. Per datasheet, I_H ranges from 150 mA to 800 mA depending on temperature and unit variation. Below this threshold - such as during surge decay or low-impedance fault clearing - the TSPD automatically returns to high-impedance off-state within ≤30 ms.

Can TB0900M-13-F be used in DC power rail protection?

No - TB0900M-13-F is not rated for DC power rail protection. Its 75 V VDRM and 98 V VBO are optimized for AC telecom line voltages (e.g., 48–56 V nominal with ringing). Applying it across a DC rail risks unintended triggering during normal voltage transients or ripple, and its latching behavior could cause persistent short-circuit conditions without external current limiting.

How does off-state capacitance affect high-speed data transmission?

At 140 pF, TB0900M-13-F introduces measurable insertion loss above 100 kHz. In ADSL2+ (up to 2.2 MHz), this capacitance forms a low-pass filter with line impedance, attenuating high-frequency upstream signals. Designers mitigate this by placing the TSPD upstream of transformers or using it only in baseband voice-grade interfaces where bandwidth ≤4 kHz is sufficient.

Is TB0900M-13-F compliant with IPC/JEDEC J-STD-020 moisture sensitivity standards?

Yes - TB0900M-13-F is rated Moisture Sensitivity Level 1 (MSL-1) per J-STD-020, meaning it has unlimited floor life at ≤30°C/85% RH and requires no baking prior to reflow soldering. This simplifies manufacturing flow and eliminates yield loss from moisture-related popcorning during assembly.