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STMicroelectronics DSILC6-4P6
- Part No.:
- DSILC6-4P6
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
DSILC6-4P6.pdf
- Description:
- TVS DIODE 5VWM SOT666
- Quantity:
- Payment:
- Shipping:
Inventory:43,044
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Product details
Overview
DSILC6-4P6 from STMicroelectronics is a monolithic 4-line ESD protection diode array for high-speed interfaces including USB 2.0, LVDS display/camera links, and Ethernet PHYs. It delivers 1.5–1.8 pF typical I/O-to-GND capacitance at 1.65 V bias, 6 V breakdown voltage, 8 kV contact/15 kV air ESD immunity per IEC 61000-4-2 Level 4, and operates up to 125 °C junction temperature in SOT-666 package.
For engineers reviewing the DSILC6-4P6 datasheet, DSILC6-4P6 pinout, DSILC6-4P6 application, or DSILC6-4P6 equivalent, key selection criteria include low-capacitance signal integrity preservation, compact 2.9 mm² PCB footprint, compliance with MDDI/SMIA/MIPI interface standards, and validated clamping performance under ±15 kV air discharge transients.
Technical Context
The DSILC6-4P6 integrates four bidirectional ESD protection diodes between I/O lines and GND, with an additional VCC-to-GND rail clamp. Its monolithic silicon structure ensures matched dynamic response across all four channels and eliminates parasitic inductance associated with discrete TVS arrays.
Designed specifically for data rates up to 480 Mbps (USB 2.0) and >2 GHz small-signal bandwidth, it maintains signal fidelity via sub-2 pF line-to-ground capacitance at operating bias and exhibits <0.06 pF capacitance shift over 1 MHz–1 GHz, enabling minimal insertion loss and crosstalk (<−40 dB at 1 GHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | IEC 61000-4-2 Level 4: 8 kV contact / 15 kV air discharge - ensures robust system-level ESD immunity without signal degradation |
| I/O-to-GND Capacitance | 1.5–1.8 pF (typ.) at 1.65 V, 1 MHz - preserves signal integrity for USB 2.0 and LVDS interfaces |
| Breakdown Voltage | 6 V (min) at 1 mA - provides safe margin above 5 V VCC while triggering before IC damage thresholds |
| Clamping Voltage | <12 V at 5 A (8/20 µs pulse) - limits transient overvoltage to levels compatible with 3.3 V/5 V I/O structures |
| Package | SOT-666 (2.6 × 1.7 × 0.6 mm) - enables high-density routing with 2.9 mm² PCB area and standard reflow compatibility |
| Operating Temperature | −55 °C to +125 °C - supports industrial and mobile handset environments with thermal cycling reliability |
Pinout & Package
SOT-666 package: 6-pin, dual-row surface-mount outline with 0.5 mm pitch; body size 2.6 mm × 1.7 mm × 0.6 mm; RoHS-compliant, lead-free terminations; UL94 V0 epoxy molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| I/O1 | Protected signal line 1 | Bidirectional ESD path to GND; low-capacitance node for high-speed data (e.g., USB D+) |
| I/O2 | Protected signal line 2 | Bidirectional ESD path to GND; matched capacitance and timing to I/O1 for differential pair integrity |
| I/O3 | Protected signal line 3 | Bidirectional ESD path to GND; independent clamping for third high-speed channel (e.g., LVDS clock+) |
| I/O4 | Protected signal line 4 | Bidirectional ESD path to GND; symmetrical layout to minimize skew vs. I/O3 in serial interface applications |
| VCC | Supply rail clamp terminal | Connects internal rail-clamp diode to 5 V supply; shunts ESD current from I/O lines to VCC when VCC is present |
| GND | Reference and return path | Common cathode connection for all four I/O diodes and VCC clamp; must be low-inductance PCB plane |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic 4-line diode array | Guarantees matched electrical parameters (capacitance, leakage, clamping) across all channels without inter-device variation |
| Sub-2 pF I/O-to-GND capacitance at bias | Enables use in 480 Mbps USB 2.0 and 800 Mbps LVDS without measurable eye diagram closure |
| Compliance with MDDI, SMIA, MIPI | Validated for camera module and display interface signal chains requiring low-noise, high-bandwidth ESD protection |
| SOT-666 footprint (2.9 mm²) | Reduces PCB real estate by >40% versus SO-8 or SC-70 alternatives while maintaining manufacturability |
Applications
| USB 2.0 Interface Protection | LVDS Display Link Protection |
|---|---|
Use Scenario: Protecting D+/D− differential pair on host-side USB 2.0 ports in portable computing and docking stations. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed immediately adjacent to USB connector, clamping ESD events before reaching PHY transceiver. Use Value: Maintains 480 Mbps data rate integrity with <1.8 pF loading and clamps ±15 kV air discharge to <12 V peak at 5 A pulse. | Use Scenario: Shielding high-speed LVDS clock and data pairs between smartphone AP and AMOLED display panel. IC Role / Device Role / Timing Role: Four-channel ESD clamp on TX0+/TX0−/TX1+/TX1− lines, preserving differential skew and common-mode rejection. Use Value: Achieves −40 dB crosstalk at 1 GHz and <0.06 pF capacitance shift over frequency-critical for pixel-clock stability. |
| Mobile Camera Interface (SMIA/MDDI) | Ethernet PHY Protection |
Use Scenario: ESD safeguard for SMIA parallel data bus (DATA1+, DATA1−, CLOCK+, CLOCK−) in dual-camera modules. IC Role / Device Role / Timing Role: Low-capacitance, matched-channel protector ensuring timing alignment across all four signals in image capture path. Use Value: Meets SMIA spec requirements with 1.5–1.8 pF per line and <2 ns response time-prevents frame corruption during hot-plug events. | Use Scenario: Transient protection for 1000BASE-T PHY differential pairs (BI_DA+/−, BI_DB+/−) in embedded networking equipment. IC Role / Device Role / Timing Role: Front-end ESD guard on magnetics side of Ethernet transformer, absorbing surges before choke saturation. Use Value: Withstands 15 kV air discharge while adding <0.9 pF inter-line capacitance-no impact on 100 MHz signaling margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| USBLC6-2P6 | 2-channel, lower capacitance (0.8 pF), no VCC clamp | Optimized only for USB D+/D−; lacks support for 4-line buses or rail-clamp functionality | Select when protecting exactly two lines with ultra-low capacitance and no VCC connection required |
| ESDALC6V1P3 | Single-line, 3.3 V VBR, 0.6 pF capacitance, SOD-323 | Targeted at low-voltage I/O (e.g., SDIO, I²C); not scalable to multi-line high-speed interfaces | Select for space-constrained single-signal protection where 3.3 V operation and minimal loading are critical |
Compared with USBLC6-2P6 and ESDALC6V1P3, DSILC6-4P6 uniquely balances 4-line integration, VCC-assisted clamping, and sub-2 pF loading-making it the only option for compact, standards-compliant protection of full USB 2.0 or LVDS link stacks.
Availability
DSILC6-4P6 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, mobile display link safeguarding, and SMIA camera bus hardening requiring stable component supply and long-term production continuity.
Supply support for DSILC6-4P6 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, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The DSILC6-4xx series belongs to ST's dedicated ESD protection portfolio, engineered specifically for high-speed serial interfaces where signal integrity, board space, and system-level ESD compliance are co-constrained design priorities.
FAQ
What is the maximum recommended PCB trace length between DSILC6-4P6 and protected I/O pins?
ST recommends ≤3 mm trace length from DSILC6-4P6 I/O pins to the protected interface pins to minimize inductance-induced voltage overshoot during ESD events. Longer traces increase clamping voltage beyond specified limits-verified in application note AN3274 using TLP characterization.
Does DSILC6-4P6 require external decoupling capacitors on VCC?
No external capacitor is required on VCC; however, a 100 nF ceramic capacitor placed within 5 mm of the DSILC6-4P6 VCC and GND pins improves high-frequency energy shunting during multi-pulse ESD events and stabilizes rail-clamp behavior per Figure 3 test setup in the datasheet.
Can DSILC6-4P6 be used to protect 3.3 V-only systems without a 5 V rail?
Yes-DSILC6-4P6 functions as a pure I/O-to-GND protector when VCC is left unconnected or tied to GND; the VCC pin then acts as a floating anode, and all four diodes retain full 6 V breakdown and 15 kV ESD capability, as confirmed in Table 2 test conditions.
How does DSILC6-4P6's capacitance vary with DC bias voltage?
Capacitance decreases from 2.5 pF at 0 V to 1.8 pF at 1.65 V and further to 1.5 pF at 3.3 V (SOT-666, 1 MHz). This voltage-dependent reduction is inherent to the diode junction and is documented in Table 2's "VI/O = 1.65 V" and "VI/O = 0 V" rows-critical for modeling signal loading in biased LVDS or USB receivers.
DSILC6-4P6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- SOT-563, SOT-666
- Series:
- DSI
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 120W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 2pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-666
DSILC6-4P6 FAQ
1.How can I place an order for DSILC6-4P6 through Aetrix?
Please submit a Request for Quotation (RFQ) for DSILC6-4P6 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 DSILC6-4P6 reliable?
The price and inventory of DSILC6-4P6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSILC6-4P6 is usually 5 days.
3.What payment methods are accepted for DSILC6-4P6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSILC6-4P6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSILC6-4P6?
DSILC6-4P6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSILC6-4P6 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 DSILC6-4P6?
For technical support, including DSILC6-4P6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSILC6-4P6 requirements.
6.How does Aetrix verify that DSILC6-4P6 is sourced from the original manufacturer or authorized distributors?
All DSILC6-4P6 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 DSILC6-4P6 meets industry standards.
7.What is the process for return or replacement of DSILC6-4P6?
All DSILC6-4P6 units undergo pre-shipment inspection (PSI). If there is an issue with DSILC6-4P6, 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 DSILC6-4P6 part is unused and in its original packaging.
Return procedure for DSILC6-4P6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DSILC6-4P6 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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