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Semtech Corporation GS2978-CNTE3Z
- Part No.:
- GS2978-CNTE3Z
- Manufacturer:
- Semtech Corporation
- Category:
- Video Processing
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
GS2978-CNTE3Z.pdf
- Description:
- IC VIDEO CABLE DRIVER DUAL 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,902
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Product details
Overview
GS2978-CNTE3Z from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and 20mΩ dynamic resistance. It protects USB Type-C power delivery buses, load switch inputs, and industrial I/O interfaces.
For engineers reviewing the GS2978-CNTE3Z datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for consistent voltage limiting, DFN-6 footprint compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards.
Technical Context
The GS2978-CNTE3Z uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V-from 24A to 40A peak pulse current due to decreasing RDS(on) under surge conditions.
It operates across –40°C to +125°C, maintains stable 22V reverse stand-off voltage and <600nA leakage at VRWM, and delivers 1120W peak pulse power. Its 175pF junction capacitance at 22V/1MHz supports moderate-speed bus protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 ESD immunity for external connectors in portable and industrial equipment. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage rise under increasing surge current. |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for USB PD VBUS and load switch input protection; not intended for high-speed data lines. |
| Operating Temp. | –40°C to +125°C - supports operation in automotive under-hood, industrial control, and wide-temperature embedded applications. |
Pinout & Package
GS2978-CNTE3Z is housed in a RoHS-compliant, halogen-free DFN package measuring 1.6mm × 1.6mm × 0.55mm with 6 leads and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch VIN); parallel connection of all three pins ensures uniform current sharing and optimal 40A capability. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS diodes with active shunt switching, delivering flat clamping independent of surge magnitude or temperature. |
| Stable clamping over temperature | Clamping voltage remains 27.5–28V from –40°C to +125°C - eliminates derating concerns in thermally demanding environments. |
| Low dynamic resistance | 20mΩ enables minimal IR drop under 40A surge, preserving voltage margin for downstream 24V-tolerant components. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) supports robust protection against lightning-induced surges in industrial and outdoor equipment. |
| Compact DFN-6 footprint | 1.6mm × 1.6mm area saves >50% board space vs. SO-8 or SOT-23 alternatives while maintaining thermal and electrical performance. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB Type-C ports supporting up to 20V/5A PD profiles against ESD, EFT, and surge events. IC Role / Device Role / Timing Role: Primary EOS suppressor placed between connector and PD controller or load switch, clamping transients before they reach sensitive silicon. Use Value: Maintains 27.5–28V clamping across full 40A surge range and temperature extremes, preventing false trips or latch-up in PD negotiation logic. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) exposed to field wiring surges in remote meters or robotics. IC Role / Device Role / Timing Role: Front-end transient limiter that diverts surge energy away from the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents permanent damage to load switch ICs by holding clamped voltage below their absolute maximum ratings (e.g., <30V) even at 125°C ambient. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways or edge AI modules subjected to electrostatic discharge during field servicing. IC Role / Device Role / Timing Role: Standalone EOS protector on main power input, operating in parallel with upstream e-fuse or PMIC, with no control interface required. Use Value: Delivers ±30kV ESD immunity and 4kV EFT tolerance without degrading system efficiency or requiring bias supply or enable signals. |
Use Scenario: Shielding 22V backup or auxiliary power rails in NVMe SSD enclosures or enterprise storage controllers from hot-plug transients and cable coupling. IC Role / Device Role / Timing Role: Unidirectional shunt protector on non-data power rail, placed adjacent to connector to minimize trace inductance and overshoot. Use Value: Ensures reliable operation during repeated hot-insertion cycles by sustaining clamping performance after >1000 surge events per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Identical electrical specs, same DFN-6 package, identical marking code T22; GS2978-CNTE3Z is Semtech's alternate ordering designation for TDS2211P.C. | No functional difference; both qualified for USB PD, industrial load switch, and IoT 22V rail protection per same datasheet Rev 2.5. | Select GS2978-CNTE3Z when sourcing through authorized distributors using Semtech's CNTE3Z suffix convention; identical BOM substitution. |
| uClamp2411ZA | 24V working voltage, lower 20A IPP rating, higher 33V clamping at 20A, smaller 0.65mm × 0.65mm DFN-2 package, optimized for CC/SBU lines-not rated for 40A or power rail duty. | Intended for low-capacitance, low-current signal-line protection (e.g., USB-C CC pins), not for VBUS or load switch inputs. | Not interchangeable with GS2978-CNTE3Z; use only for dedicated signal-line roles where 20A/33V clamping suffices and board space is ultra-constrained. |
Compared with TDS2211P.C, GS2978-CNTE3Z is functionally identical and fully substitutable; compared with uClamp2411ZA, GS2978-CNTE3Z provides 2× peak current capacity, 5.5V lower clamping, and power-rail-rated thermal design-making it unsuitable for signal lines but essential for robust 22V bus protection.
Availability
GS2978-CNTE3Z is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch front-ends, and IoT edge node power bus protection requiring stable component supply, long-term lifecycle assurance, and compliance with IEC 61000-4-2/4-4/4-5.
Supply support for GS2978-CNTE3Z 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
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and connectivity solutions.
The GS2978-CNTE3Z belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power and interface protection applications where clamping stability and temperature independence are critical.
FAQ
What is the primary protection function of the GS2978-CNTE3Z?
The GS2978-CNTE3Z functions as a transient diverting suppressor that actively shunts high-energy electrical overstress (EOS) events-including ESD, EFT, and lightning-induced surges-to ground using a precision-triggered FET. Unlike passive TVS diodes, GS2978-CNTE3Z maintains a near-constant 27.5–28V clamping voltage across its full 40A surge rating and operating temperature range, ensuring predictable protection for 22V systems.
Does the GS2978-CNTE3Z require any external bias or control signals to operate?
No, the GS2978-CNTE3Z is a fully autonomous protection device with no enable pin, no power supply requirement, and no configuration interface. Its internal trigger circuit activates the shunt FET automatically when input voltage exceeds the breakdown threshold (~27.9V), making GS2978-CNTE3Z ideal for simple, reliable placement on power rails like USB PD VBUS or load switch inputs without firmware or layout complexity.
Can GS2978-CNTE3Z be used on high-speed data lines such as USB SuperSpeed or PCIe?
No, GS2978-CNTE3Z is not suitable for high-speed data lines due to its 175pF junction capacitance at 22V, which would severely degrade signal integrity. It is expressly designed for 22V power or low-speed I/O lines (e.g., VBUS, CC, SBU, or load switch enable inputs). For SuperSpeed lanes, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF), not GS2978-CNTE3Z.
How does the GS2978-CNTE3Z differ from standard TVS diodes in surge response?
Standard TVS diodes exhibit rising clamping voltage with increasing peak pulse current (VC = VBR + IPP × RDYN) and significant temperature drift. In contrast, GS2978-CNTE3Z uses a surge-rated FET whose RDS(on) decreases under surge, resulting in flat 27.5–28V clamping from 24A to 40A and minimal variation from –40°C to +125°C-directly addressing reliability gaps in industrial and automotive 22V protection.
Is GS2978-CNTE3Z compatible with automated SMT assembly processes?
Yes, GS2978-CNTE3Z is supplied in tape-and-reel format (3,000 units per 7-inch reel) and features a standard DFN-6 footprint with solderable side-wettable flanks per IPC-7351B. Its Pb-free, halogen-free construction and UL 94V-0 molding compound meet IPC-A-610 Class 2/3 process requirements, and the device has been validated for reflow profiles up to 260°C peak temperature-fully compatible with standard SMT assembly for GS2978-CNTE3Z integration.
GS2978-CNTE3Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- HD-LINX® III
- Package/Case:
- 16-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Driver
- Applications:
- Professional Video
- Standards:
- SMPTE
- Control Interface:
- Serial
- Voltage - Supply:
- 3.135V ~ 3.465V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-QFN (4x4)
GS2978-CNTE3Z FAQ
1.How can I place an order for GS2978-CNTE3Z through Aetrix?
Please submit a Request for Quotation (RFQ) for GS2978-CNTE3Z 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 GS2978-CNTE3Z reliable?
The price and inventory of GS2978-CNTE3Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS2978-CNTE3Z is usually 5 days.
3.What payment methods are accepted for GS2978-CNTE3Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS2978-CNTE3Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GS2978-CNTE3Z?
GS2978-CNTE3Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GS2978-CNTE3Z 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 GS2978-CNTE3Z?
For technical support, including GS2978-CNTE3Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS2978-CNTE3Z requirements.
6.How does Aetrix verify that GS2978-CNTE3Z is sourced from the original manufacturer or authorized distributors?
All GS2978-CNTE3Z 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 GS2978-CNTE3Z meets industry standards.
7.What is the process for return or replacement of GS2978-CNTE3Z?
All GS2978-CNTE3Z units undergo pre-shipment inspection (PSI). If there is an issue with GS2978-CNTE3Z, 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 GS2978-CNTE3Z part is unused and in its original packaging.
Return procedure for GS2978-CNTE3Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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