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Semtech Corporation 1N6158AUS
- Part No.:
- 1N6158AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6158AUS.pdf
- Description:
- TVS DIODE 35.8VWM 64.6VC
- Quantity:
- Payment:
- Shipping:
Inventory:4,387
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Product details
Overview
1N6158AUS 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 PD, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6158AUS datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, clamping stability across temperature and current, and real-world use cases in USB Type-C and industrial power rail protection.
Technical Context
The 1N6158AUS employs a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant - 27.5–28V - across 24A to 40A peak pulse current and from –40°C to +125°C.
It delivers 1120W peak pulse power (8/20μs), maintains ≤600nA reverse leakage at 22V, and exhibits only 175pF junction capacitance at 22V/1MHz - enabling low-distortion protection without signal integrity compromise in high-speed power bus applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD input stages. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements for connector-facing protection. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough to avoid signal distortion on 20V power rails while maintaining robust surge handling. |
Pinout & Package
1N6158AUS is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required). All six terminals are electrically active and must be connected per 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; all three pins must be connected with low-inductance vias to maximize current sharing and thermal dissipation. |
| 4, 5, 6 | IN | Protected line input (e.g., VBus); parallel connection of all three pins reduces trace inductance and ensures uniform current distribution during 8/20μs surges. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Replaces traditional TVS diodes with a low-RDS(on) MOSFET triggered by precision voltage detection - delivering stable clamping independent of current or temperature. |
| Constant clamping over temperature | 27.5–28V clamping maintained from –40°C to +125°C - eliminates derating concerns in industrial or automotive under-hood environments. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated surge exposure in DIN rail, metering, and robotics applications without degradation. |
| Low dynamic resistance | 20mΩ measured between 1A–40A - minimizes voltage overshoot during fast transients and improves system-level immunity margin. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBus lines in USB Type-C receptacles against ESD, lightning-induced surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at the connector, clamping transients before they reach the USB PD controller or load switch. Use Value: Maintains 27.5–28V clamping across full 40A surge range and temperature extremes - preventing false shutdown or latch-up in PD controllers rated for ≤30V absolute max. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., HS2950P) against EOS in remote meters, PLC I/O modules, and robotic power supplies. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage stress on the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents permanent damage to load switch ICs during 1.2/50μs surges up to ±1kV (RS = 42Ω), extending field reliability in ungrounded or long-cable installations. |
| IoT Edge Device Power Rail Protection | Tablet/Notebook VBus Surge Suppression |
Use Scenario: Securing 22V auxiliary power rails in battery-powered IoT gateways exposed to ESD during field servicing or connector mating. IC Role / Device Role / Timing Role: Single-component, space-efficient solution replacing multi-stage TVS+capacitor networks on compact PCBs with tight layout constraints. Use Value: 1.6mm × 1.6mm footprint saves >60% board area versus SOD-123 or SMA TVS alternatives while delivering superior clamping consistency. |
Use Scenario: Protecting VBus lines in ultraportable notebooks and tablets where USB-C ports must survive repeated ±30kV ESD events without system reset or brownout. IC Role / Device Role / Timing Role: Fast-acting, low-capacitance (175pF) suppressor that avoids interfering with USB PD communication timing or voltage negotiation accuracy. Use Value: Enables compliance with IEC 61000-4-2 Level 4 without requiring additional filtering or layout compromises near high-speed data lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same manufacturer, identical electrical specs and DFN-6 package - confirmed functional and mechanical replacement per Semtech documentation. | Identical use case: 22V VBus/EOS protection in USB-C, industrial power rails, and load switch inputs. | Select TDS2211P when sourcing directly from Semtech or authorized distributors; identical marking (T22) and reel packaging ensure drop-in compatibility. |
| SMAJ22A | Standard unidirectional TVS diode; higher clamping (~41V at 40A), no temperature stability, 600pF capacitance, DO-214AC package (4.5mm × 2.7mm). | Suitable only for lower-speed, non-temperature-critical 22V protection where board space and clamping precision are secondary. | Choose SMAJ22A only if legacy design reuse or cost sensitivity outweighs clamping performance, thermal stability, and footprint reduction needs. |
Compared with TDS2211P and SMAJ22A, the 1N6158AUS offers identical performance to TDS2211P in form, fit, and function - including 27.5–28V clamping, 20mΩ RDYN, and DFN-6 layout - while SMAJ22A requires PCB redesign, suffers 50% higher clamping, and lacks temperature-invariant behavior critical for industrial deployments.
Availability
1N6158AUS is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch protection, and IoT edge device power rail hardening requiring stable component supply, consistent surge performance, and long-term lifecycle support.
Supply support for 1N6158AUS 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, power management, and transient protection.
The 1N6158AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered specifically to replace conventional TVS diodes in high-reliability 20–30V power rail applications demanding flat clamping, temperature stability, and minimal board space.
FAQ
What is the exact package type and dimensions of the 1N6158AUS?
The 1N6158AUS uses a DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with no exposed thermal pad. Pin 1 is marked by a laser dot; pins 1–3 are GND, and pins 4–6 are IN. All six terminals must be soldered to achieve full 40A surge rating per Semtech's layout guidelines.
Does the 1N6158AUS meet IEC 61000-4-5 surge immunity standards?
Yes, the 1N6158AUS is rated for 40A peak pulse current (8/20μs waveform) and ±1kV combination wave (1.2/50μs voltage, 8/20μs current, RS = 42Ω), satisfying IEC 61000-4-5 Level 4 for industrial environments. Its 27.5–28V clamping ensures protected circuits remain within safe voltage margins during test conditions.
How does the 1N6158AUS differ from standard TVS diodes like SMAJ22A?
Unlike SMAJ22A - a junction-based TVS with rising clamping voltage vs. current and temperature - the 1N6158AUS uses a triggered FET architecture. This yields constant 27.5–28V clamping from –40°C to +125°C and 1A–40A, plus 20mΩ dynamic resistance and 175pF capacitance, making it superior for precision 22V rail protection.
Can the 1N6158AUS be used for bidirectional signal line protection?
No - the 1N6158AUS is unidirectional and designed exclusively for positive-voltage power or I/O line protection (e.g., VBus). It conducts only from IN to GND. For bidirectional data-line protection (e.g., USB DP/DM), Semtech recommends low-capacitance TVS devices such as RClamp3371ZC, not the 1N6158AUS.
What is the maximum operating temperature range for the 1N6158AUS?
The 1N6158AUS is specified for continuous operation from –40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range, and junction temperature is rated to +150°C - supporting deployment in sealed enclosures, industrial control cabinets, and automotive under-dash environments.
1N6158AUS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SQ-MELF
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 35.8V (Max)
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.6V
- Current - Peak Pulse (10/1000µs):
- 23.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6158AUS FAQ
1.How can I place an order for 1N6158AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6158AUS 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 1N6158AUS reliable?
The price and inventory of 1N6158AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6158AUS is usually 5 days.
3.What payment methods are accepted for 1N6158AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6158AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6158AUS?
1N6158AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6158AUS 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 1N6158AUS?
For technical support, including 1N6158AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6158AUS requirements.
6.How does Aetrix verify that 1N6158AUS is sourced from the original manufacturer or authorized distributors?
All 1N6158AUS 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 1N6158AUS meets industry standards.
7.What is the process for return or replacement of 1N6158AUS?
All 1N6158AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6158AUS, 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 1N6158AUS part is unused and in its original packaging.
Return procedure for 1N6158AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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