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Semtech Corporation TS31023-QFNR
- Part No.:
- TS31023-QFNR
- Manufacturer:
- Semtech Corporation
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
TS31023-QFNR.pdf
- Description:
- IC PWR SWITCH P-CHAN 1:1 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,024
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Product details
Overview
TS31023-QFNR 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), constant 27.5–28V clamping across 24–40A, 20mΩ dynamic resistance, and 175pF junction capacitance in a 1.6×1.6mm DFN-6 package. It is deployed in USB Type-C PD input protection where low, temperature-stable clamping prevents damage to downstream controllers.
For engineers reviewing the TS31023-QFNR datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over temperature and peak current, dynamic resistance under surge, leakage at 22V, and DFN-6 layout compatibility with high-current ground and input routing.
Technical Context
The TS31023-QFNR 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 due to decreasing RDS(on) under increasing surge current - not fixed RDYN-based rise.
It operates across –40°C to +125°C with stable 27.5–28V clamping at both 24A and 40A (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω), and maintains <600nA reverse leakage at VRWM = 22V and 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or degradation |
| Clamping Voltage | 27.5–28V at 24A & 40A - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold even at full surge rating |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements |
| Dynamic Resistance | 20mΩ - enables low-voltage drop during conduction, minimizing power dissipation and thermal stress |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with 22V power rail protection; not suitable for high-speed data lines |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 human-body model requirements for rugged industrial interfaces |
| Operating Temperature | –40°C to +125°C - supports deployment in automotive cabin, industrial control, and outdoor IoT environments |
Pinout & Package
TS31023-QFNR is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All six terminals must be connected for rated surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path; all three pins must be routed to solid ground plane with multiple vias to minimize inductance during 40A transients |
| 4, 5, 6 | IN | Protected line input; all three pins connect in parallel to the same 22V bus or power rail to distribute surge current and reduce trace impedance |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across 24–40A and –40°C to +125°C - eliminates derating uncertainty vs. traditional TVS diodes |
| FET-based shunt architecture | Surge-rated MOSFET + precision trigger circuit - enables sub-0.1Ω effective on-resistance during clamping |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot and localized heating during multi-pulse surge events |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz) - protects against repetitive fast transients in motor drives and PLCs |
| Space-optimized packaging | 1.6×1.6mm DFN-6 - saves >50% board area versus SO-8 or SOT-23 TVS alternatives with comparable ratings |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C ports supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed between connector and load switch or PD controller. Use Value: Maintains 27.5–28V clamping at 125°C - avoids overvoltage damage to PD controllers whose absolute max rating is often ≤30V. |
Use Scenario: Safeguarding input rails of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Front-end transient suppressor preventing gate oxide rupture or drain-source avalanche in the load switch's internal FET. Use Value: Clamps below 28V at 40A - stays well under typical 30–35V breakdown limits of integrated e-fuse FETs. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Backup Rail Protection |
|
Use Scenario: Securing 22V auxiliary power inputs in battery-backed wireless sensors operating in harsh electromagnetic environments (e.g., smart agriculture gateways). IC Role / Device Role / Timing Role: Single-point, low-capacitance surge diverter for non-data-critical power rails requiring long-term reliability. Use Value: 175pF capacitance and <600nA leakage at 125°C ensure minimal impact on standby current and no signal integrity compromise. |
Use Scenario: Protecting 22V backup power supplies in NVMe SSDs and enterprise storage controllers subject to hot-swap and system-level surges. IC Role / Device Role / Timing Role: High-energy transient clamp on the backup VCC rail feeding real-time clocks and firmware retention circuits. Use Value: 1120W peak pulse power rating handles sustained 40A surges without parametric shift - critical for mission-critical data retention integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Identical electrical specs, pinout, and package; TS31023-QFNR is Semtech's rebranded, functionally equivalent variant per official ordering documentation | No functional difference - both qualified for USB-C PD, industrial load switch, and 22V rail protection | Select TS31023-QFNR for Aetrix inventory continuity; TDS2211P remains valid for cross-sourcing from other distributors |
| SMAJ22A | Standard unidirectional TVS diode; 35.1V min clamping at 12.3A (8/20μs); clamping rises to ~42V at 40A; 1000pF capacitance | Higher clamping, higher capacitance, and strong temperature dependence - unsuitable for 30V-tolerant PD controllers or space-constrained layouts | Only consider SMAJ22A if board layout allows larger SMC package and system tolerates >40V clamping at elevated temperature |
Compared with TDS2211P, TS31023-QFNR offers identical performance and drop-in compatibility; compared with SMAJ22A, it delivers 14V lower clamping at full surge, 82% less capacitance, and stable voltage regulation across temperature - enabling robust 22V system protection without design margin trade-offs.
Availability
TS31023-QFNR is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V backup power rails requiring stable component supply, long-lifecycle support, and consistent surge performance across temperature extremes.
Supply support for TS31023-QFNR 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 semiconductors for precision protection, sensing, and signal integrity.
The TS31023-QFNR belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where clamping stability, low dynamic resistance, and compact DFN packaging are critical.
FAQ
What is the clamping voltage behavior of TS31023-QFNR across temperature and surge current?
The TS31023-QFNR maintains a tightly regulated clamping voltage of 27.5–28V at both 24A and 40A (1.2/50μs + 8/20μs combination waveform, RS = 2Ω), with no measurable increase from –40°C to +125°C. This stability stems from its FET-based shunt architecture, unlike TVS diodes whose clamping rises linearly with current and temperature. TS31023-QFNR's design ensures predictable protection margins in thermally demanding applications like industrial enclosures or automotive cabins.
Is TS31023-QFNR pin-compatible with TDS2211P?
Yes - TS31023-QFNR is a direct, functionally identical rebranding of TDS2211P per Semtech's official ordering documentation and package marking. Both share identical DFN-6 pinout (pins 1–3 = GND, pins 4–6 = IN), mechanical dimensions (1.6×1.6×0.55mm), electrical specifications, and thermal performance. TS31023-QFNR may be used as a drop-in replacement without PCB or firmware changes.
Can TS31023-QFNR protect high-speed data lines such as USB SuperSpeed or PCIe?
No - TS31023-QFNR is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V would severely degrade signal integrity on differential pairs operating above 100MHz. It is expressly designed for 22V power or low-frequency I/O line protection. For USB SS, DP/DM, or CC lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) or uClamp2411ZA.
What is the maximum continuous working voltage for TS31023-QFNR?
The TS31023-QFNR has a reverse stand-off voltage (VRWM) of 22V, meaning it reliably blocks up to 22V DC or RMS AC continuously without significant leakage. At this voltage, reverse leakage remains ≤600nA even at +125°C. Exceeding 22V risks premature triggering or accelerated degradation. TS31023-QFNR is therefore optimized for 22V nominal systems such as USB PD 3.0 (20V max) with safety margin.
Does TS31023-QFNR require a thermal pad or heatsink on the PCB?
No - TS31023-QFNR does not require an external thermal pad or heatsink. Its FET-based architecture dissipates surge energy efficiently in silicon, and the DFN-6 package relies on low-inductance GND connections (via multiple vias) rather than thermal conduction. The datasheet explicitly states "no thermal pad is needed," and layout guidelines emphasize ground plane connectivity over copper pour area. TS31023-QFNR's 125°C junction rating is achieved through internal design, not external cooling.
TS31023-QFNR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-VFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- P-Channel
- Interface:
- On/Off
- Voltage - Load:
- 5V ~ 16V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 60mA
- Rds On (Typ):
- -
- Input Type:
- Non-Inverting
- Features:
- -
- Fault Protection:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x2)
TS31023-QFNR FAQ
1.How can I place an order for TS31023-QFNR through Aetrix?
Please submit a Request for Quotation (RFQ) for TS31023-QFNR 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 TS31023-QFNR reliable?
The price and inventory of TS31023-QFNR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS31023-QFNR is usually 5 days.
3.What payment methods are accepted for TS31023-QFNR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS31023-QFNR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS31023-QFNR?
TS31023-QFNR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS31023-QFNR 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 TS31023-QFNR?
For technical support, including TS31023-QFNR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS31023-QFNR requirements.
6.How does Aetrix verify that TS31023-QFNR is sourced from the original manufacturer or authorized distributors?
All TS31023-QFNR 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 TS31023-QFNR meets industry standards.
7.What is the process for return or replacement of TS31023-QFNR?
All TS31023-QFNR units undergo pre-shipment inspection (PSI). If there is an issue with TS31023-QFNR, 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 TS31023-QFNR part is unused and in its original packaging.
Return procedure for TS31023-QFNR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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