STMicroelectronics DSL05-024SC6

Overview

DSL05-024SC6 from STMicroelectronics is a low-capacitance bidirectional TVS diode array designed for secondary surge protection of VDSL2 and G.FAST line drivers. It features a 24 V standoff voltage (VRM), 30 A peak pulse current (8/20 µs), 0.95 pF typical capacitance, 50 nA leakage at 25 °C, and SOT23-6L packaging - enabling high-speed DSL data integrity in telecom CPE and infrastructure equipment.

For engineers reviewing the DSL05-024SC6 datasheet, DSL05-024SC6 pinout, DSL05-024SC6 application, or DSL05-024SC6 equivalent, key selection criteria include clamping voltage under 31 V at 10 A, thermal stability up to +150 °C junction temperature, compliance with ITU-T K20/21/45 and GR-1089, and compatibility with gas tube-based primary protection stages.

Technical Context

DSL05-024SC6 implements a monolithic dual-channel TVS structure with symmetrical I/O-to-I/O and I/O-to-VLD clamping paths. Its design supports bidirectional transient suppression across two independent signal lines while maintaining sub-1 pF capacitance to preserve signal integrity up to G.FAST frequencies (212 MHz).

The device operates with a 24 V DC standoff rating (VRM), triggers at ≥24 V (VBR min), clamps to ≤31 V at 10 A (8/20 µs), and sustains 30 A peak pulse current without degradation - validated per IEC 61000-4-5 Level 2 (1 kV, 42 Ω) and ITU-T K21 (150 A, 5/310 µs).

Key Specifications

Pinout & Package

DSL05-024SC6 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 optimized for automated PCB assembly and reflow per IPC/JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SP1003-024 and CM1213A-024, DSL05-024SC6 uniquely balances 30 A surge robustness, 0.95 pF capacitance, and SOT23-6L pin compatibility - making it optimal for VDSL2/G.FAST upgrades where legacy board space and signal integrity are constrained.

Availability

DSL05-024SC6 is available at Aetrix Electronics and suitable for VDSL2 customer premises equipment, G.FAST distribution point units, xDSL central office line cards, and multi-service access node deployments requiring stable component supply across extended product lifecycles.

Supply support for DSL05-024SC6 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, sensing, and connectivity solutions for automotive, industrial, and communications markets.

DSL05 belongs to ST's telecom protection portfolio, engineered specifically for secondary surge suppression in broadband access systems - balancing ultra-low capacitance, high surge immunity, and thermal resilience for DSL physical layer interfaces.

FAQ

What is the maximum clamping voltage of DSL05-024SC6 under standard surge conditions?

The DSL05-024SC6 clamps to ≤31 V when subjected to a 10 A, 8/20 µs transient pulse, as specified in Table 3 of the official datasheet (DocID029116 Rev 3). This value is measured between I/O1 and I/O2 terminals and ensures safe operation of downstream line driver ICs rated for ≤33 V absolute maximum.

Can DSL05-024SC6 be used without connection to +VLD and −VLD pins?

Yes - the +VLD (Pin 2) and −VLD (Pin 5) pins may remain unconnected in topologies where only I/O1–I/O2 differential clamping is required, such as certain CPE schematics (Figure 8). However, connecting them to respective supply rails improves clamping symmetry and reduces voltage overshoot during common-mode transients.

Does DSL05-024SC6 meet IEC 61000-4-2 Level 4 ESD requirements?

Yes - DSL05-024SC6 complies with IEC 61000-4-2 Level 4, sustaining 15 kV air discharge and 8 kV contact discharge without parametric shift or functional failure, as confirmed in Section 1.2 ("Complies with the following standards") of the datasheet.

Is the SOT23-6L package of DSL05-024SC6 compatible with standard reflow profiles?

Yes - the device supports standard lead-free reflow per IPC/JEDEC J-STD-020, with a maximum soldering temperature of 260 °C for 10 seconds. Figure 18 in the datasheet provides ST's recommended reflow profile, including preheat, soak, ramp-up, and peak temperature zones aligned to industry norms.