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Home > Products > Integrated Circuits (ICs) > Linear > Video Processing

Semtech Corporation GX3146-CBE3

Name: GX3146-CBE3
Brand: Semtech Corporation
SKU: GX3146-CBE3
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: GX3146-CBE3

Manufacturer:: Semtech Corporation

Category:: Video Processing

Package:: 2377-BBGA, FCBGA

Datasheet:: GX3146-CBE3.pdf

Description:: IC VIDEO CROSSPOINT SW 2377FCBGA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

GX3146-CBE3 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), and stable 27.5–28V clamping across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch inputs.

For engineers reviewing the GX3146-CBE3 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge, low dynamic resistance (20mΩ), junction capacitance (175pF at 22V), DFN 1.6×1.6mm package constraints, and compatibility with 22V bus systems requiring robust EOS defense beyond standard TVS performance.

Technical Context

The GX3146-CBE3 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown threshold - enabling near-constant clamping voltage independent of peak pulse current magnitude. Unlike conventional TVS diodes, its clamping behavior relies on FET R_DS(on) collapse rather than fixed dynamic resistance.

It operates over –40°C to +125°C, maintains ≤600nA reverse leakage at 22V, and delivers 1120W peak pulse power handling. Its functional architecture separates trigger sensing (V_BR ≈25–27.9V) from low-impedance shunt conduction, ensuring stable protection during lightning surges (±1kV, 1.2/50μs + 8/20μs combo wave) and repetitive EFT bursts (±4kV, 5/50ns).

Key Specifications

Parameter	Value and Actual Design Meaning
Working Voltage	22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage degradation.
Clamping Voltage	27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave) - ensures downstream ICs (e.g., USB PD controllers) remain below damage thresholds even at full surge rating.
Peak Pulse Current	40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems.
Dynamic Resistance	20mΩ - enables minimal voltage rise under surge, critical for maintaining tight clamping across wide current range.
Junction Capacitance	175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces.
ESD Withstand	±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity standards for connector-facing protection.

Pinout & Package

Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, tape-and-reel packaging (3,000 pcs/reel).

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 sharing and minimize parasitic inductance.
4, 5, 6	IN	Protected line input - connects directly to VBus or power/data line; all three pins are internally paralleled for enhanced surge handling and thermal distribution.

Key Features

Feature	Design Value
Constant-clamp architecture	Clamping voltage remains stable (27.5–28V) from 24A to 40A and across –40°C to +125°C - eliminates derating uncertainty in thermal design.
FET-based shunt topology	Replaces traditional pn-junction TVS with low-R_DS(on) MOSFET - reduces clamping dependency on current magnitude and improves energy dissipation efficiency.
High-energy surge rating	1120W peak pulse power (8/20μs) - supports industrial-grade lightning surge compliance without external series impedance.
Low-leakage protection	≤600nA reverse leakage at 22V - prevents standby power loss in battery-powered IoT and portable equipment.

Applications

USB Type-C Power Delivery Input Protection	Industrial Load Switch Input Protection
Use Scenario: Protecting VBus lines in USB Type-C connectors supporting up to 20V PD operation against ESD, lightning surges, and system-level EOS events. IC Role / Device Role / Timing Role: Primary front-end transient suppressor placed between connector and PD controller or load switch, clamping transients before they reach sensitive silicon. Use Value: Maintains 27.5–28V clamping at full 40A surge - avoids overvoltage damage to PD controllers rated for ≤28V absolute max, unlike TVS devices whose clamping rises with temperature and current.	Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment exposed to field surges. IC Role / Device Role / Timing Role: High-current shunt protector that diverts EOS energy away from the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent failure of the load switch by holding clamping voltage below its 30V+ breakdown limit - enabled by 20mΩ dynamic resistance and stable thermal response.
IoT Device Power Rail Protection	Storage Device 22V Bus Protection
Use Scenario: Securing 22V auxiliary power rails in edge AI sensors, smart gateways, and wireless modules where space-constrained PCB layout demands ultra-small footprint protection. IC Role / Device Role / Timing Role: Single-component, low-capacitance (175pF) EOS suppressor replacing multi-device TVS + RC networks on compact 4-layer boards. Use Value: DFN 1.6×1.6mm package saves >60% board area versus SOT-23 TVS solutions while delivering superior clamping consistency across operating temperature range.	Use Scenario: Shielding 22V supply inputs of NVMe SSDs, enterprise HDD backplanes, and RAID controllers from hot-plug transients and backplane coupling noise. IC Role / Device Role / Timing Role: Fast-acting, low-inductance shunt device placed at board edge to intercept surges before entering power management ICs or flash controller power domains. Use Value: 4kV EFT immunity (IEC 61000-4-4) and ±30kV ESD robustness ensure uninterrupted operation during repeated insertion cycles and electromagnetic noisy environments.

USB Type-C Power Delivery Input Protection

Industrial Load Switch Input Protection

Use Scenario: Protecting VBus lines in USB Type-C connectors supporting up to 20V PD operation against ESD, lightning surges, and system-level EOS events.

IC Role / Device Role / Timing Role: Primary front-end transient suppressor placed between connector and PD controller or load switch, clamping transients before they reach sensitive silicon.

Use Value: Maintains 27.5–28V clamping at full 40A surge - avoids overvoltage damage to PD controllers rated for ≤28V absolute max, unlike TVS devices whose clamping rises with temperature and current.

Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment exposed to field surges.

IC Role / Device Role / Timing Role: High-current shunt protector that diverts EOS energy away from the load switch's internal FET gate oxide and drain-source junction.

Use Value: Prevents latch-up or permanent failure of the load switch by holding clamping voltage below its 30V+ breakdown limit - enabled by 20mΩ dynamic resistance and stable thermal response.

IoT Device Power Rail Protection

Storage Device 22V Bus Protection

Use Scenario: Securing 22V auxiliary power rails in edge AI sensors, smart gateways, and wireless modules where space-constrained PCB layout demands ultra-small footprint protection.

IC Role / Device Role / Timing Role: Single-component, low-capacitance (175pF) EOS suppressor replacing multi-device TVS + RC networks on compact 4-layer boards.

Use Value: DFN 1.6×1.6mm package saves >60% board area versus SOT-23 TVS solutions while delivering superior clamping consistency across operating temperature range.

Use Scenario: Shielding 22V supply inputs of NVMe SSDs, enterprise HDD backplanes, and RAID controllers from hot-plug transients and backplane coupling noise.

IC Role / Device Role / Timing Role: Fast-acting, low-inductance shunt device placed at board edge to intercept surges before entering power management ICs or flash controller power domains.

Use Value: 4kV EFT immunity (IEC 61000-4-4) and ±30kV ESD robustness ensure uninterrupted operation during repeated insertion cycles and electromagnetic noisy environments.

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 1.6×1.6mm package, identical pinout and marking (T22XX), manufactured by Semtech - direct form-fit-function match.	No functional deviation; validated for USB Type-C PD, load switch, and industrial 22V bus use cases per Semtech application notes.	Select when sourcing from authorized Semtech channels with traceable date-code and reel packaging compliance.
SMAJ22A	Standard unidirectional TVS diode; higher clamping (~40V at 24A, 125°C); 200W peak power; DO-214AC package (4.5×3.2mm) - 5.6× larger footprint.	Limited to lower-energy surges; clamping voltage increases significantly with temperature and current - unsuitable for precision 22V PD controller protection.	Consider only for cost-sensitive, non-temperature-critical 22V applications where board space and clamping stability are secondary.

Compared with TDS2211P.C (identical spec) and SMAJ22A (conventional TVS), GX3146-CBE3 delivers superior clamping stability, smaller footprint, and higher surge endurance - making it optimal for space-constrained, thermally demanding 22V EOS protection where consistent voltage limiting is mandatory.

Availability

GX3146-CBE3 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT device 22V power rails requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for GX3146-CBE3 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 protection, signal integrity, and power management.

GX3146-CBE3 belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection applications where clamping voltage stability across temperature and current is critical.

FAQ

What is the exact clamping voltage specification for GX3146-CBE3 at 40A surge current?

The GX3146-CBE3 clamps at 27.6–28V under 40A peak pulse current (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω), as specified in the Electrical Characteristics table of the official Semtech datasheet Rev 2.5. This value remains stable across –40°C to +125°C ambient temperature.

Does GX3146-CBE3 support bidirectional or unidirectional transient protection?

GX3146-CBE3 is a unidirectional Transient Diverting Suppressor, designed specifically for 22V DC power or I/O lines where reverse polarity is not expected. Its reverse stand-off voltage is 22V and reverse breakdown voltage is 25–27.9V - confirming operation only in forward-biased surge diversion mode.

What is the recommended PCB layout for optimal surge performance of GX3146-CBE3?

For optimal performance, all three IN pins (4, 5, 6) must be connected via a single low-inductance trace to the protected line, and all three GND pins (1, 2, 3) must connect directly to a solid ground plane using multiple vias. The GX3146-CBE3 should be placed within 5mm of the connector to minimize coupled transient energy into adjacent traces.

Is GX3146-CBE3 compatible with automated SMT assembly processes?

Yes, GX3146-CBE3 uses a standard DFN 1.6×1.6mm package with exposed pad-less construction and lead-free finish, fully compatible with reflow soldering per IPC/JEDEC J-STD-020. Its marking (T22XX) and tape-and-reel packaging (3,000 pcs/7″ reel) meet industry-standard SMT handling requirements.

How does GX3146-CBE3 differ from traditional TVS diodes in terms of thermal performance?

Unlike TVS diodes whose clamping voltage rises with temperature due to fixed dynamic resistance, GX3146-CBE3 maintains stable 27.5–28V clamping from –40°C to +125°C because its FET-based shunt mechanism reduces R_DS(on) under surge - resulting in predictable protection margins without thermal derating calculations.

GX3146-CBE3 Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: 2377-BBGA, FCBGA

Packaging:: Tray

Product Status:: Active

Function:: Switch

Applications:: Professional Video

Standards:: -

Control Interface:: Parallel, Serial

Voltage - Supply:: -

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 2377-FCBGA (50x50)

GX3146-CBE3 FAQ

1.How can I place an order for GX3146-CBE3 through Aetrix?

Please submit a Request for Quotation (RFQ) for GX3146-CBE3 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 GX3146-CBE3 reliable?

The price and inventory of GX3146-CBE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GX3146-CBE3 is usually 5 days.

3.What payment methods are accepted for GX3146-CBE3?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GX3146-CBE3 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for GX3146-CBE3?

GX3146-CBE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your GX3146-CBE3 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 GX3146-CBE3?

For technical support, including GX3146-CBE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GX3146-CBE3 requirements.

6.How does Aetrix verify that GX3146-CBE3 is sourced from the original manufacturer or authorized distributors?

All GX3146-CBE3 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 GX3146-CBE3 meets industry standards.

7.What is the process for return or replacement of GX3146-CBE3?

All GX3146-CBE3 units undergo pre-shipment inspection (PSI). If there is an issue with GX3146-CBE3, 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 GX3146-CBE3 part is unused and in its original packaging.

Return procedure for GX3146-CBE3:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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