STMicroelectronics DSL04-010SC6

Overview

DSL04-010SC6 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, 42 Ω) surges. It features a 10 V reverse standoff voltage (VRM), 11 V minimum breakdown voltage (VBR), 27 A peak pulse current (8/20 µs), 1 pF typical junction capacitance, and 0.2 µA leakage at 25 °C.

For engineers reviewing the DSL04-010SC6 datasheet, DSL04-010SC6 pinout, DSL04-010SC6 application, or DSL04-010SC6 equivalent, this device is selected for high-speed xDSL line protection where low capacitance, precise clamping, and robust ESD/ surge immunity are critical - especially in symmetric line driver interfaces with configurable ±VLD biasing.

Technical Context

The DSL04-010SC6 implements a dual-channel, bidirectional TVS structure with independent I/O1–I/O2 paths and center-tapped voltage nodes (–VLD, +VLD) that support flexible biasing configurations - either connected to external supply rails or left floating per system-level surge coordination requirements. Its low 1 pF capacitance ensures minimal signal integrity degradation across ADSL to VDSL2 frequency bands (up to 30 MHz).

It operates over –40 °C to +125 °C junction temperature, withstands 30 kV peak pulse voltage per IEC 61000-4-5, and maintains sub-0.2 µA leakage up to 10 V reverse bias - enabling reliable operation in always-on telecom line interfaces without DC loading concerns.

Key Specifications

Pinout & Package

DSL04-010SC6 is housed in a RoHS-compliant, lead-free SOT23-6L package (ECOPACK® grade), measuring 2.8–3.05 mm × 1.5–1.75 mm × 1.3–1.6 mm (L × W × H), with gull-wing leads and UL 94 V0 epoxy molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMAJ10A and SP1003-010, DSL04-010SC6 uniquely balances telecom-grade surge robustness (±1 kV IEC 61000-4-5 Level 2), ultra-low capacitance (1 pF), and bidirectional SOT23-6L integration - making it the only option qualified for VDSL2 line driver protection without signal degradation or external components.

Availability

DSL04-010SC6 is available at Aetrix Electronics and suitable for VDSL2 CPE design, DSLAM line card production, and multi-mode xDSL test equipment requiring stable component supply, long-term lifecycle assurance, and traceable RoHS-compliant sourcing.

Supply support for DSL04-010SC6 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, Switzerland, delivering intelligent power, analog, MEMS, and microcontroller solutions for industrial, automotive, and communications markets.

DSL04 belongs to ST's dedicated protection portfolio targeting high-speed wired communication interfaces; it was engineered specifically to meet the stringent capacitance, clamping, and surge endurance demands of xDSL infrastructure.

FAQ

What is the maximum operating temperature for DSL04-010SC6?

The DSL04-010SC6 has a specified operating junction temperature range of –40 °C to +125 °C. This rating is validated per Table 1 in DS8922 Rev 3 and confirmed by thermal characterization in the datasheet's absolute maximum ratings section. The device maintains full electrical performance within this range, including leakage current ≤0.2 µA and clamping voltage ≤27 V at 15 A.

Can the ±VLD pins be left unconnected?

Yes, the +VLD and –VLD pins may be left unconnected in applications where passive clamping is sufficient. The functional schematic in DS8922 Rev 3 explicitly shows these nodes as optional. Floating them does not affect basic bidirectional TVS operation between I/O1 and I/O2, but connecting them to appropriate bias rails improves clamping speed and energy handling in coordinated surge protection schemes.

Is DSL04-010SC6 compatible with lead-free reflow processes?

Yes, DSL04-010SC6 is qualified for lead-free reflow per ST's ECOPACK® specifications. Figure 12 in DS8922 Rev 3 provides the recommended profile: peak temperature 240–245 °C, ramp-up ≤3 °C/s, time above 217 °C = 60–90 seconds. The SOT23-6L package meets JEDEC J-STD-020 moisture sensitivity level 1 and withstands 260 °C for 10 s per soldering specification.

How does DSL04-010SC6 differ from DSL04-005SC6?

DSL04-010SC6 has a 10 V reverse standoff voltage (VRM) and 11 V minimum breakdown voltage (VBR), whereas DSL04-005SC6 specifies 5 V VRM and 6.5 V VBR. Both share identical package, capacitance (1 pF), leakage (0.2 µA), and surge ratings. The higher-voltage variant is selected for 12–24 V line driver supplies, while the 5 V version targets low-voltage ADSL interfaces with tighter clamping margins.