Diodes Incorporated TB0640L-13-F

Overview

TB0640L-13-F from Diodes Incorporated is a bidirectional surface-mount thyristor surge protective device (TSPD) rated for 30A peak pulse current (10/1000μs), 58V maximum repetitive off-state voltage (V_DRM), and 77V breakover voltage (V_BO). It features oxide-glass passivated junction, high off-state impedance, low on-state voltage (3.5V @ 1A), and is UL Recognized (File #156346) for telecom and data line protection.

For engineers reviewing the TB0640L-13-F datasheet, TB0640L-13-F pinout, TB0640L-13-F application, or TB0640L-13-F equivalent, key selection criteria include stand-off voltage matching, I_PP capability under IEC 61000-4-5 (150A @ 8/20μs), bidirectional clamping symmetry, thermal resistance (R_θJL = 30°C/W), and SMB package compatibility with board-level surge routing.

Technical Context

This TSPD operates as a voltage-triggered crowbar device: it remains highly resistive below V_DRM (58V), transitions rapidly to low-impedance conduction at V_BO (77V ±5%), and sustains clamping during surge events up to 30A (10/1000μs). Its bidirectional structure enables symmetric protection without polarity constraints.

Thermal design relies on R_θJL = 30°C/W to manage transient power dissipation, while the 100pF off-state capacitance (measured at 1MHz, 2VDC bias) ensures minimal signal distortion in telecom/data lines. Holding current (I_H) ranges 150–800mA, ensuring reliable return to high-impedance state post-surge.

Key Specifications

Pinout & Package

Package: SMB (Surface Mount Bidirectional), molded plastic case per UL 94V-0, dimensions 3.30–3.94mm (A) × 4.06–4.57mm (B) × 1.96–2.21mm (C), 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 SP1003-01WTG and TISP4240M3JR-S, TB0640L-13-F offers optimal balance of 58V precision standoff, SMB thermal robustness (R_θJL = 30°C/W), and 100pF capacitance for legacy telecom and industrial control interfaces requiring proven field reliability.

Availability

TB0640L-13-F is available at Aetrix Electronics and suitable for telecom line protection, RS-485 interface hardening, and DSL modem surge suppression requiring stable component supply and long-lifecycle support.

Supply support for TB0640L-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, computing, and communications markets.

TB0640L belongs to Diodes' TB-series bidirectional TSPDs, engineered specifically for GR-1089-CORE and IEC 61000-4-5 compliant surge protection in telecom infrastructure, data communication equipment, and industrial control systems.

FAQ

What is the maximum operating temperature for TB0640L-13-F?

The TB0640L-13-F has a specified junction temperature range of –40°C to +150°C and storage temperature range of –55°C to +150°C. Its thermal resistance junction-to-lead is 30°C/W, enabling sustained operation at full-rated surge current when mounted on ≥1 cm² of 2-oz copper with thermal vias.

Does TB0640L-13-F require a series current-limiting resistor?

No-TB0640L-13-F is a self-resetting thyristor device that latches on during overvoltage and automatically resets when load current falls below its holding current (150–800mA). A series resistor is unnecessary for basic crowbar operation but may be used to limit peak surge current in ultra-high-energy threat environments.

How does TB0640L-13-F compare to TVS diodes for surge protection?

TB0640L-13-F offers higher surge current capability (30A @ 10/1000μs vs. typical 10–20A for SMB TVS), lower clamping voltage variation over temperature (0.1%/°C), and inherent bidirectional symmetry without pairing. However, its ~30ms recovery time exceeds TVS sub-microsecond response, making it better suited for slower, higher-energy threats like lightning rather than ESD.

Is TB0640L-13-F compatible with lead-free reflow processes?

Yes-TB0640L-13-F features matte tin lead-free plating and complies with J-STD-020 Level 1 moisture sensitivity. It supports standard Pb-free reflow profiles (peak 260°C, 10s max above 217°C) and passes MIL-STD-202 Method 208 solderability testing.