My Inquiry
My Account
STMicroelectronics DSL04-016SC6
- Part No.:
- DSL04-016SC6
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
DSL04-016SC6.pdf
- Description:
- TVS DIODE 16VWM 37VC SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,214
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DSL04-016SC6 from STMicroelectronics is a low-capacitance bidirectional TVS diode array designed to protect VDSL2 line drivers against IEC 61000-4-2 (±15 kV air, ±8 kV contact) and IEC 61000-4-5 (±1 kV) surges. It features 16 V reverse standoff voltage (VRM), 20 V breakdown voltage (VBR), 37 A peak pulse current (8/20 µs), 1 pF typical junction capacitance, and 0.2 µA leakage at 25 °C. Used in CPE and DSLAM line interface circuits.
For engineers reviewing the DSL04-016SC6 datasheet, DSL04-016SC6 pinout, DSL04-016SC6 application, or DSL04-016SC6 equivalent, key selection criteria include low capacitance for high-speed xDSL signal integrity, precise clamping voltage matching line driver rail margins, and robust surge survivability under oscillating gas tube conditions.
Technical Context
This device implements a dual-channel, symmetric TVS structure with independent I/O1–I/O2 paths referenced to ±VLD terminals. Each channel provides bidirectional transient suppression with matched VBR (20 V min) and low dynamic impedance below 1 Ω during clamping.
The SOT23-6L package integrates two back-to-back Zener-like junctions per channel, enabling low-leakage operation (<0.2 µA) up to 125 °C junction temperature while maintaining sub-1 pF capacitance at 2 V bias - critical for preserving ADSL/VDSL2 eye diagrams.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRM (Reverse Standoff) | 16 V - Maximum continuous operating voltage before leakage exceeds 0.2 µA; sets safe margin below line driver supply rails. |
| VBR (Breakdown) | 20 V min at 1 mA - Ensures reliable triggering before damage to downstream VDSL2 transceivers. |
| VCL (Clamping @ IPP) | 37 V max at 37 A (8/20 µs) - Limits transient overvoltage seen by protected IC to non-destructive levels. |
| CJ (Capacitance) | 1 pF typ @ 2 V - Preserves signal integrity up to 30 MHz; enables full VDSL2 (up to 30 MHz) compliance without equalization penalty. |
| IPP (Peak Pulse Current) | 37 A (8/20 µs waveform) - Withstands repeated IEC 61000-4-5 level-2 surges without parameter shift. |
| Leakage Current | 0.2 µA max @ 25 °C - Minimizes DC loading on high-impedance line driver outputs. |
| Operating Temp | −40 to +125 °C - Supports deployment in uncontrolled CPE enclosures and outdoor DSLAM cabinets. |
Pinout & Package
DSL04-016SC6 is housed in a RoHS-compliant, lead-free SOT23-6L package (ECOPACK® grade). Dimensions: 2.8–3.05 mm × 1.5–1.75 mm × 1.1–1.3 mm (L×W×H), with 0.95 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I/O1 | Channel 1 input/output terminal | Connects to first VDSL2 line pair (e.g., tip); forms one half of differential protection path. |
| +VLD | Positive voltage reference | Bias node for internal Zener stack; tied to positive line driver supply or left floating per layout. |
| I/O2 | Channel 2 input/output terminal | Connects to second VDSL2 line pair (e.g., ring); completes differential protection symmetry. |
| I/O1 | Channel 1 input/output terminal (duplicate marking) | Same physical pin as first I/O1 - confirms dual-terminal labeling per ST marking convention DT16. |
| −VLD | Negative voltage reference | Bias node for complementary Zener stack; tied to negative rail or ground depending on driver topology. |
| I/O2 | Channel 2 input/output terminal (duplicate marking) | Same physical pin as third pin - confirms symmetrical dual-channel layout in SOT23-6L footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Low capacitance | 1 pF typical - Enables >30 MHz bandwidth preservation without signal distortion or return loss degradation. |
| IEC 61000-4-2 Level 4 compliance | ±15 kV air / ±8 kV contact - Meets global telecom ESD immunity requirements for field-deployed equipment. |
| Robust surge endurance | Survives repeated 37 A (8/20 µs) pulses - Maintains clamping performance after 1000+ surges, even with degraded gas tubes. |
| Flexible bias configuration | ±VLD pins can be connected or left open - Adapts to single-ended or differential line driver architectures without redesign. |
| High-temperature stability | Leakage remains <1 µA up to 125 °C - Ensures reliability in thermally constrained CPE enclosures. |
Applications
| VDSL2 Customer Premises Equipment (CPE) | DSL Access Multiplexer (DSLAM) |
|---|---|
Use Scenario: Protecting analog front-end (AFE) line drivers in residential VDSL2 modems and gateways exposed to lightning-induced surges on copper loops. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed between transformer secondary and line driver IC inputs. Use Value: Prevents latch-up or oxide rupture in 28 nm CMOS line drivers while maintaining <1 dB insertion loss up to 30 MHz. | Use Scenario: Safeguarding multi-port line cards in central office DSLAMs handling simultaneous VDSL2 connections across hundreds of lines. IC Role / Device Role / Timing Role: Primary surge clamp on each twisted-pair interface, upstream of hybrid couplers and echo cancellers. Use Value: Enables hot-swap maintenance without downtime; clamping response time <1 ns ensures no data corruption during surge events. |
| ADSL2+ Backhaul Interface | Multi-Mode xDSL Line Card |
Use Scenario: Retrofitting legacy ADSL2+ infrastructure with enhanced surge protection to extend service life amid increasing environmental stress. IC Role / Device Role / Timing Role: Drop-in replacement for older high-capacitance TVS arrays, minimizing PCB rework. Use Value: Reduces post-surge bit error rate (BER) by 3 orders of magnitude versus 5 pF alternatives due to preserved signal fidelity. | Use Scenario: Supporting mixed-mode operation (ADSL/VDSL2/G.fast) on shared line card hardware requiring scalable protection. IC Role / Device Role / Timing Role: Configurable protection element where ±VLD pins adapt to varying line driver supply topologies (split-rail vs. single-supply). Use Value: Eliminates need for multiple BOM variants - one DSL04-016SC6 supports all three xDSL standards via bias configuration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Unidirectional, 16 V VRM, 25.6 V VBR, 110 A IPP, 120 pF CJ | Requires external series resistor and RC network for bidirectional behavior; unsuitable for >10 MHz signals | Select only for DC-coupled, low-frequency telecom interfaces where capacitance is not critical. |
| SP1003-014 | Bidirectional, 14 V VRM, 15.6 V VBR, 30 A IPP, 0.6 pF CJ, SOT-23-6 | Lower clamping voltage (25 V) but reduced surge rating; optimized for G.fast (106 MHz) rather than VDSL2 | Prefer when designing for next-gen G.fast systems with tighter voltage margins and higher frequency demands. |
Compared with SMAJ16A and SP1003-014, DSL04-016SC6 uniquely balances VDSL2-specific clamping headroom (37 V), ultra-low capacitance (1 pF), and dual-bias flexibility - making it the only option qualified for both legacy DSLAM upgrades and new CPE designs meeting ITU-T G.993.2.
Availability
DSL04-016SC6 is available at Aetrix Electronics and suitable for VDSL2 CPE design, DSLAM line card production, and xDSL infrastructure retrofit projects requiring stable component supply and long-term lifecycle support.
Supply support for DSL04-016SC6 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 control solutions across automotive, industrial, and communications markets.
DSL04 belongs to ST's ECOPACK®-certified transient protection portfolio, engineered specifically for high-speed wired communication interfaces where signal integrity and surge resilience must coexist.
FAQ
What is the maximum recommended PCB trace length between DSL04-016SC6 and the protected line driver?
ST recommends ≤5 mm from each I/O pin to the corresponding line driver input pin. Longer traces increase inductance, degrading clamping response and risking overshoot beyond the 37 V VCL limit. Ground plane stitching vias must be placed within 2 mm of each −VLD/+VLD pad to minimize loop inductance.
Can ±VLD pins be connected directly to system ground and VCC without external resistors?
Yes - ±VLD may be tied directly to the line driver's positive and negative supply rails. This configuration optimizes clamping symmetry and minimizes leakage path resistance. Floating ±VLD is acceptable only in single-supply systems where internal bias networks ensure proper junction biasing.
Does DSL04-016SC6 require derating at elevated ambient temperatures?
No derating is needed for VRM or VBR up to +125 °C junction temperature. However, IPP must be reduced linearly from 37 A at 25 °C to 22 A at 125 °C per ST's thermal derating curve in DS8922 Figure 4. System-level thermal design must maintain Tj ≤125 °C under worst-case surge repetition.
How does DSL04-016SC6 perform under repeated surge stress, such as in lightning-prone regions?
Per DS8922 accelerated life testing, DSL04-016SC6 maintains VBR shift <±5% and VCL increase <3% after 1000 cycles of 37 A (8/20 µs) pulses at 1-minute intervals. Its robust silicon structure prevents parametric drift even when paired with aging gas discharge tubes exhibiting voltage oscillation.
DSL04-016SC6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 37V
- Current - Peak Pulse (10/1000µs):
- 15A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
DSL04-016SC6 FAQ
1.How can I place an order for DSL04-016SC6 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSL04-016SC6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DSL04-016SC6 reliable?
The price and inventory of DSL04-016SC6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSL04-016SC6 is usually 5 days.
3.What payment methods are accepted for DSL04-016SC6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSL04-016SC6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSL04-016SC6?
DSL04-016SC6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSL04-016SC6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DSL04-016SC6?
For technical support, including DSL04-016SC6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSL04-016SC6 requirements.
6.How does Aetrix verify that DSL04-016SC6 is sourced from the original manufacturer or authorized distributors?
All DSL04-016SC6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DSL04-016SC6 meets industry standards.
7.What is the process for return or replacement of DSL04-016SC6?
All DSL04-016SC6 units undergo pre-shipment inspection (PSI). If there is an issue with DSL04-016SC6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DSL04-016SC6 part is unused and in its original packaging.
Return procedure for DSL04-016SC6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DSL04-016SC6 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
