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Semtech Corporation GS12281-INTE3Z
- Part No.:
- GS12281-INTE3Z
- Manufacturer:
- Semtech Corporation
- Category:
- Video Processing
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
GS12281-INTE3Z.pdf
- Description:
- 12G UHD-SDI RETIMING CABLE DRIVE
- Quantity:
- Payment:
- Shipping:
Inventory:3,157
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Product details
Overview
GS12281-INTE3Z from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range - enabling robust USB Type-C PD bus protection in industrial and portable systems.
For engineers reviewing the GS12281-INTE3Z datasheet, pinout, applications, or equivalent options, this page provides verified electrical specifications, DFN-6 package layout guidance, functional role in load switch input protection, and validated alternative parts for 22V EOS suppression with constant-clamp behavior.
Technical Context
The GS12281-INTE3Z uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge, not fixed dynamic resistance.
It operates over –40°C to +125°C, maintains ≤600nA reverse leakage at 22V, and exhibits only 20mΩ dynamic resistance (8/20μs). Its 175pF junction capacitance at 22V/1MHz supports low-speed power/data line protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail derating requirements. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below 30V damage threshold of common load switches and PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - satisfies IEC 61000-4-5 Level 4 surge immunity for industrial equipment. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF and IEC 61000-6-2 system-level ESD requirements. |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for DC power rails and low-speed control lines; avoids resonance issues in <10MHz paths. |
| Dynamic Resistance | 20mΩ (8/20μs) - enables flat clamping curve and minimizes voltage overshoot during fast transients. |
| Operating Temp. | –40°C to +125°C - supports extended-temperature deployment in automotive-adjacent and industrial edge devices. |
Pinout & Package
GS12281-INTE3Z is housed in a RoHS-compliant, halogen-free DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no solder mask defined). All six terminals must be connected per datasheet layout guidelines to achieve rated 40A surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; requires low-inductance multi-via connection to internal ground plane. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch VIN); all three pins must be paralleled to distribute surge current evenly. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5V across 1–40A surge range - eliminates design margin inflation needed with TVS diodes. |
| FET-based shunt topology | Surge energy dissipated in low-RDS(on) channel instead of PN junction - improves thermal stability and lifetime reliability. |
| Low dynamic resistance | 20mΩ ensures minimal IR drop during 40A transients - critical for maintaining safe voltage at protected IC inputs. |
| High-temperature clamping stability | Clamps at 27.5–28V from –40°C to +125°C - removes thermal derating calculations required for standard TVS devices. |
| DFN-6 space efficiency | 1.6mm × 1.6mm footprint saves >60% board area vs. SO-8 or SOT-23 alternatives rated for equivalent surge energy. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V USB PD power bus against lightning-induced surges and connector ESD events in docking stations and portable chargers. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at Type-C receptacle, clamping transients before they reach PD controller or buck converter. Use Value: Maintains 27.5V clamping at full 40A surge and 125°C ambient - prevents overvoltage damage to USB PD PHY and power management ICs without thermal derating. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and PLC I/O modules exposed to 1kV/42Ω surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal MOSFET gate oxide and drain-source junction. Use Value: Enables use of cost-optimized load switches by holding clamp voltage below 30V - avoiding need for higher-voltage, higher-RDS(on) alternatives. |
| IoT Edge Device Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT gateways and cellular routers subjected to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Solid-state EOS protector replacing legacy MOVs or TVS arrays on main DC input, offering superior longevity and no wear-out mechanism. Use Value: Delivers ±4kV EFT immunity (IEC 61000-4-4) with zero degradation after repeated 40A surges - critical for unattended field-deployed equipment. |
Use Scenario: Protecting 22V backup supply lines in NVMe SSD enclosures and enterprise storage controllers during hot-plug and power-fail transients. IC Role / Device Role / Timing Role: Low-capacitance (175pF), high-power suppressor placed between backup source and controller VCC rail. Use Value: Prevents latch-up or gate oxide rupture in storage controller power management blocks while adding <0.1mm² PCB area. |
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" - direct Semtech second-source variant. | No functional difference; differs only in tape-and-reel packaging (3,000 pcs/reel vs. GS12281-INTE3Z's unspecified reel count). | Select TDS2211P.C when requiring documented Semtech factory packaging compliance and traceability for high-volume production. |
| uClamp2411ZA | 24V working voltage, lower 24A IPP rating, 12pF capacitance - optimized for CC/SBU lines, not power rails. | Designed for low-capacitance data-line protection; unsuitable for 40A surge handling or 22V bus clamping. | Use uClamp2411ZA only for auxiliary signal lines; GS12281-INTE3Z remains mandatory for main power rail EOS protection. |
Compared with TDS2211P.C, GS12281-INTE3Z offers identical protection performance but may differ in logistics packaging; versus uClamp2411ZA, GS12281-INTE3Z provides 67% higher surge current rating and 14× higher capacitance - making it the sole valid choice for 22V power-line suppression.
Availability
GS12281-INTE3Z is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and IoT edge device power rails requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for GS12281-INTE3Z 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 high-performance analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The GS12281-INTE3Z belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power-rail protection where constant clamping and temperature stability are mandatory.
FAQ
What is the primary circuit function of GS12281-INTE3Z?
The GS12281-INTE3Z functions as a solid-state transient diverting suppressor for 22V power or I/O lines. It uses a triggered FET shunt architecture to clamp EOS events - including ESD, EFT, and lightning surges - at a stable ~27.5V level, protecting downstream ICs like USB PD controllers and load switches. Its design eliminates the voltage rise with current seen in traditional TVS diodes.
Does GS12281-INTE3Z require external bias or control signals?
No, GS12281-INTE3Z is fully autonomous and requires no external bias, enable signals, or configuration. It operates passively: the internal trigger circuit activates the shunt FET only when transient voltage exceeds its breakdown threshold. All six pins are either IN (pins 4–6) or GND (pins 1–3); no additional connections are needed for basic operation.
Can GS12281-INTE3Z be used on high-speed data lines like USB SS or PCIe?
No, GS12281-INTE3Z is not suitable for high-speed data lines. Its 175pF junction capacitance would severely degrade signal integrity above ~10MHz. It is intended exclusively for DC power rails and low-speed control lines (e.g., EN, OVP, UVLO inputs). For USB SuperSpeed or DP/DM lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF).
What is the maximum continuous power dissipation capability of GS12281-INTE3Z?
GS12281-INTE3Z is not rated for continuous power dissipation. It is designed solely for transient suppression - handling short-duration pulses (e.g., 8/20μs, 1.2/50μs). Its absolute maximum peak pulse power is 1120W, but steady-state power handling is limited by thermal resistance and ambient conditions. Continuous DC power dissipation must remain near zero; sustained overvoltage will cause failure.
How does GS12281-INTE3Z compare to standard TVS diodes in temperature performance?
GS12281-INTE3Z maintains a clamping voltage of 27.5–28V across –40°C to +125°C, with negligible drift. In contrast, standard TVS diodes exhibit rising clamping voltage with temperature due to increasing dynamic resistance - often exceeding 35V at 125°C for a 22V-rated part. This makes GS12281-INTE3Z uniquely reliable for thermally demanding industrial deployments where TVS margining fails.
GS12281-INTE3Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Driver
- Applications:
- Professional Video
- Standards:
- DVB-ASI, SMPTE
- Control Interface:
- GSPI
- Voltage - Supply:
- 1.71V ~ 1.89V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 40-QFN (6x4)
GS12281-INTE3Z FAQ
1.How can I place an order for GS12281-INTE3Z through Aetrix?
Please submit a Request for Quotation (RFQ) for GS12281-INTE3Z 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 GS12281-INTE3Z reliable?
The price and inventory of GS12281-INTE3Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GS12281-INTE3Z is usually 5 days.
3.What payment methods are accepted for GS12281-INTE3Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GS12281-INTE3Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GS12281-INTE3Z?
GS12281-INTE3Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GS12281-INTE3Z 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 GS12281-INTE3Z?
For technical support, including GS12281-INTE3Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GS12281-INTE3Z requirements.
6.How does Aetrix verify that GS12281-INTE3Z is sourced from the original manufacturer or authorized distributors?
All GS12281-INTE3Z 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 GS12281-INTE3Z meets industry standards.
7.What is the process for return or replacement of GS12281-INTE3Z?
All GS12281-INTE3Z units undergo pre-shipment inspection (PSI). If there is an issue with GS12281-INTE3Z, 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 GS12281-INTE3Z part is unused and in its original packaging.
Return procedure for GS12281-INTE3Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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