STMicroelectronics DSL04-005SC6

Overview

DSL04-005SC6 from STMicroelectronics is a low-capacitance bidirectional TVS diode array designed to protect VDSL2 line drivers in CPE and DSLAM equipment against IEC 61000-4-2 (±15 kV air, ±8 kV contact) and IEC 61000-4-5 (±1 kV) surges. It features 1 pF typical junction capacitance, 5 V reverse standoff voltage, 6.5 V minimum breakdown voltage at 1 mA, 20 V clamping voltage at 15 A (8/20 µs), and 0.2 µA leakage at 25 °C.

For engineers reviewing the DSL04-005SC6 datasheet, DSL04-005SC6 pinout, DSL04-005SC6 application, or DSL04-005SC6 equivalent, this device serves as a high-speed transient suppressor for xDSL line interfaces where signal integrity, low insertion loss, and ESD robustness are critical - especially in multi-pair DSL transceivers with shared VLD bias paths.

Technical Context

The DSL04-005SC6 implements a symmetric dual-channel TVS structure with independent I/O1–I/O2 paths and center-tapped ±VLD terminals, enabling flexible connection to line driver output stages with or without active bias control. Its 1 pF capacitance (measured at 2 V, 1 MHz) and <0.3 pF ΔC across 0–5 V ensure minimal signal distortion up to VDSL2's 30 MHz bandwidth.

It meets MIL-STD-883G Class 3 HBM (8 kV), operates from –40 °C to +125 °C junction temperature, and sustains 15 A peak pulse current (8/20 µs) while clamping below 20 V - critical for safeguarding 5 V–24 V line drivers against oscillating gas tube-induced overstress.

Key Specifications

Pinout & Package

DSL04-005SC6 is housed in a RoHS-compliant, lead-free SOT23-6L package (ECOPACK® grade). Dimensions: 2.8–3.05 mm × 1.5–1.75 mm × 1.1–1.45 mm (L × W × H), with 0.95 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TVS diode array applications.

Compared with SMAJ5.0A and SP1003-005, DSL04-005SC6 uniquely provides symmetric dual-channel, low-capacitance, bias-controllable protection optimized for differential xDSL signaling - making it irreplaceable in VDSL2 CPE/DSLAM line interface designs requiring signal fidelity and robust surge survival.

Availability

DSL04-005SC6 is available at Aetrix Electronics and suitable for VDSL2 CPE design, DSLAM line card production, and FTTN remote terminal manufacturing requiring stable component supply, consistent parametric performance, and full traceability.

Supply support for DSL04-005SC6 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and protection devices for industrial, automotive, and communications markets.

The DSL04 series belongs to ST's high-speed TVS portfolio, engineered specifically for broadband line interface protection where low capacitance, precise clamping, and telecom-standard compliance are mandatory.

FAQ

What is the function of the ±VLD terminals on DSL04-005SC6?

The +VLD and –VLD terminals provide optional bias connection points for active line driver circuits. They allow the TVS array to be integrated into bias-controlled architectures (e.g., Class AB drivers) or left unconnected in passive configurations. Their inclusion enables dynamic clamping behavior under varying bias conditions without altering the I/O1–I/O2 protection path.

Can DSL04-005SC6 be used in ADSL applications?

Yes - its 1 pF capacitance, 5 V standoff, and fast response make it fully compatible with ADSL, ADSL2+, and VDSL2 standards. The device maintains <0.3 pF capacitance variation from 0–5 V reverse bias, ensuring flat frequency response up to 30 MHz and preserving ADSL2+ spectral mask compliance.

Is DSL04-005SC6 pin-compatible with other DSL04 variants?

Yes - all DSL04 variants (e.g., DSL04-008SC6, DSL04-012SC6) share identical SOT23-6L pinout, footprint, and terminal assignment. Only the reverse standoff voltage differs; PCB layout and assembly processes remain unchanged across the family.

Does DSL04-005SC6 require external current limiting?

No - it is designed for direct placement at line driver outputs without series impedance. Its 15 A peak pulse rating and 20 V clamping voltage are specified under standardized 8/20 µs waveform conditions, and internal structure handles energy dissipation without external components in compliant xDSL interface layouts.