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Semtech Corporation 1N6115
- Part No.:
- 1N6115
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6115.pdf
- Description:
- TVS DIODE 18.2VWM 34.8VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,875
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Product details
Overview
1N6115 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 24–40A, and 20mΩ dynamic resistance - deployed in USB PD, USB Type-C, and industrial load switch input protection.
For engineers reviewing the 1N6115 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat voltage response, DFN-6 package layout constraints, and compatibility with 22V bus systems requiring robust surge immunity per IEC 61000-4-5.
Technical Context
The 1N6115 uses 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 24–40A and −40°C to +125°C due to decreasing RDS(on) under surge conditions.
It operates with three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) in a 1.6mm × 1.6mm DFN package, requiring all six pins to be connected for full 40A rating. Its 175pF junction capacitance at 22V and 1MHz supports moderate-speed bus protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or degradation. |
| Clamping Voltage | 27.5–28 V at 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD interfaces. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds standard ESD immunity requirements for handheld and connector-facing applications. |
| Dynamic Resistance | 20 mΩ (8/20μs, 1–40A range) - enables flat clamping behavior and minimizes voltage rise under increasing surge current. |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - suitable for DC power rails and low-to-moderate speed data lines (e.g., CC/SBU, VBus), not superspeed USB lanes. |
Pinout & Package
1N6115 is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All pins must be soldered for rated performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must connect to solid ground plane via multiple vias to sustain 40A surge current. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBus); all three required to distribute surge current and minimize trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28 V across full 24–40A surge range and −40°C to +125°C - eliminates derating concerns in thermally demanding environments. |
| FET-based shunt architecture | Surge-rated MOSFET triggered by precision circuit - avoids junction heating failure mode of traditional TVS diodes and enables higher energy handling per unit area. |
| Low dynamic resistance | 20 mΩ - reduces IR drop during surge, enabling tighter clamping control than TVS diodes with fixed RDYN >100 mΩ. |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 5 kHz & 100 kHz bursts) - protects against repetitive fast transients in motor drives and industrial controls. |
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 PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed adjacent to connector, clamping transients before they reach PD controller or load switch. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents overvoltage damage to 24V-tolerant PD controllers where conventional TVS would exceed 35V at same conditions. |
Use Scenario: Safeguarding input 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 diverter that limits voltage stress on the load switch's internal FET during surge events. Use Value: Enables use of smaller, lower-cost load switches by preventing gate oxide rupture or drain-source avalanche failure under ±1kV IEC 61000-4-5 surges. |
| IoT Device Power Rail Protection | Storage Device VBus Line Protection |
Use Scenario: Securing 22V-rated power inputs in battery-powered IoT edge nodes deployed in electrically noisy environments (e.g., smart sensors near motors). IC Role / Device Role / Timing Role: Standalone EOS suppressor on main power rail, coordinated with upstream e-fuse and downstream LDOs. Use Value: Delivers 40A surge capability in 1.6 mm² footprint - saves board space versus stacked TVS arrays while maintaining system-level IEC 61000-4-5 compliance. |
Use Scenario: Protecting SATA or NVMe storage module VBus connections against hot-plug ESD and system-level surges in enterprise servers and NAS units. IC Role / Device Role / Timing Role: High-reliability clamping device placed at backplane connector interface to absorb coupling transients before reaching storage controller. Use Value: Stable 27.5–28V clamping ensures no latch-up or reset of 3.3V/12V/22V storage power management ICs during repeated ±30kV ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A, 100+ mΩ RDYN, clamping rises with current/temp. | Limited to lower-energy surges; unsuitable for 40A/IEC 61000-4-5 Level 4 or high-temp industrial use. | Select only if cost sensitivity outweighs clamping stability and surge rating requirements. |
| TDS2211P | Same manufacturer, identical electrical specs and package - confirmed functional replacement per Semtech documentation and marking code T22. | Direct second-source option with identical PCB layout, thermal profile, and qualification data. | Preferred for supply chain diversification without redesign; shares full qualification history with 1N6115. |
Compared with SMAJ22A, 1N6115 delivers 30% lower clamping voltage at rated current and stable performance across temperature, while TDS2211P offers identical specifications and seamless drop-in sourcing - making 1N6115 optimal for high-reliability 22V bus protection where voltage margin is constrained.
Availability
1N6115 is available at Aetrix Electronics and suitable for USB Type-C, industrial load switch, and IoT power rail applications requiring stable component supply, long-term lifecycle support, and guaranteed surge performance compliance.
Supply support for 1N6115 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 1N6115 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications where flat clamping, temperature stability, and compact size are critical.
FAQ
What is the maximum continuous operating voltage for the 1N6115?
The 1N6115 has a reverse stand-off voltage (VRWM) of 22 V, meaning it can reliably withstand up to 22 V DC or RMS on the protected line without significant leakage or conduction. This makes the 1N6115 suitable for 20V USB PD VBus and other 22V-rated industrial power rails where sustained voltage margin is essential.
Does the 1N6115 require a thermal pad on the PCB?
No, the 1N6115 does not require an external thermal pad. Its DFN-6 package dissipates surge energy within the silicon die using a low-RDS(on) FET architecture, and the datasheet explicitly states "no thermal pad is needed." Instead, robust grounding via all three GND pins (1–3) and short, wide traces to the ground plane ensure effective heat and current handling for the 1N6115.
How does the 1N6115 differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the 1N6115 maintains a nearly constant 27.5–28 V clamping voltage from 24A to 40A and across −40°C to +125°C due to its FET-based shunt design and decreasing dynamic resistance under surge. This behavior is confirmed in the 1N6115 datasheet Figures 3 and 4.
Can the 1N6115 be used on USB SuperSpeed differential pairs?
No, the 1N6115 is not suitable for USB SuperSpeed (SS) TX/RX lanes. With 175 pF junction capacitance at 22 V, it would severely degrade signal integrity on high-speed differential lines. The 1N6115 is intended for VBus, CC, SBU, or DP/DM lines where capacitance tolerance is higher; for SS lanes, Semtech recommends sub-0.25 pF devices like RClamp3371ZC instead of the 1N6115.
Is the 1N6115 pin-compatible with TDS2211P?
Yes, the 1N6115 is functionally and physically identical to TDS2211P - same DFN-6 package, identical pin configuration (pins 1–3 = GND, pins 4–6 = IN), matching electrical specs, and shared marking code "T22". Semtech documentation confirms TDS2211P as the base part number, with 1N6115 serving as a qualified alternate, enabling direct substitution without PCB changes.
1N6115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18.2V (Max)
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.8V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N6115 FAQ
1.How can I place an order for 1N6115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6115 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 1N6115 reliable?
The price and inventory of 1N6115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6115 is usually 5 days.
3.What payment methods are accepted for 1N6115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6115?
1N6115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6115 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 1N6115?
For technical support, including 1N6115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6115 requirements.
6.How does Aetrix verify that 1N6115 is sourced from the original manufacturer or authorized distributors?
All 1N6115 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 1N6115 meets industry standards.
7.What is the process for return or replacement of 1N6115?
All 1N6115 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6115, 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 1N6115 part is unused and in its original packaging.
Return procedure for 1N6115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6115 Tags
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