My Inquiry
My Account
Semtech Corporation 1N5802US
- Part No.:
- 1N5802US
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N5802US.pdf
- Description:
- DIODE GEN PURP 50V 1.1A
- Quantity:
- Payment:
- Shipping:
Inventory:5,084
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5802US 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, 20mΩ dynamic resistance, and 175pF junction capacitance at 22V.
For engineers reviewing the 1N5802US datasheet, pinout, applications, or equivalent options, this device delivers stable clamping across temperature and current-critical for USB Type-C PD bus protection, industrial load switch input hardening, and IoT interface surge resilience where conventional TVS diodes exhibit rising VC with IPP or temperature.
Technical Context
The 1N5802US employs a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. Unlike standard TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge conditions.
It operates across –40°C to +125°C, maintains ≤600nA reverse leakage at 22V, and achieves 1120W peak pulse power handling in a DFN 1.6×1.6×0.55mm package with six terminals-three dedicated IN pins (4–6) and three GND pins (1–3)-all required for full 40A rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without triggering |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surges |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness standards |
| Dynamic Resistance | 20mΩ - enables flat clamping behavior and minimizes voltage overshoot during fast transients |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact |
Pinout & Package
1N5802US is housed in a Pb-free, RoHS-compliant DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with exposed thermal pad not required-energy dissipation occurs within the FET structure. All six terminals must be connected per functional role to achieve rated surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be low-inductance connected to PCB ground plane |
| 4, 5, 6 | IN | Input connection to protected bus (e.g., VBUS in USB Type-C); parallel routing required for full 40A capability |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across 24–40A and –40°C to +125°C - eliminates derating uncertainty vs. conventional TVS |
| FET-based shunt architecture | Surge-rated MOSFET triggered by precision circuit - enables sub-0.1Ω effective conduction path during transients |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot and improves energy diversion efficiency into ground |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in industrial environments |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Hardening |
|---|---|
Use Scenario: Protecting 20–22V VBUS lines in USB-C PD ports against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or e-fuse. Use Value: Maintains 28V clamping at 40A and 125°C-prevents overvoltage damage to sensitive PD ICs where standard TVS would exceed 38V at same conditions. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics against 1kV/42Ω line surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by internal switch FET gate oxide and drain-source junction. Use Value: Keeps clamping voltage below 28V across full temperature range-avoids latch-up or permanent failure of load switch under repeated surge stress. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet DC Input Protection |
Use Scenario: Securing 12–24V DC input rails in battery-powered IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV designs, reducing BOM count and board space. Use Value: 1.6×1.6mm DFN footprint saves >60% area vs. SOD-123 TVS while delivering higher surge rating and stable clamping. |
Use Scenario: Protecting 19–20V adapter input circuits in ultrabooks and tablets against accidental AC line transients and ESD coupling. IC Role / Device Role / Timing Role: High-reliability clamp positioned between barrel jack and PMIC input, ensuring system-level IEC 61000-4-5 compliance. Use Value: 1120W peak power rating and ±30kV ESD withstand enable single-device compliance with EN 61000-4-x immunity standards. |
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; 35.1V clamping at 12.5A (8/20μs), 1.5× higher VC than 1N5802US at rated current | Limited to lower-energy surges; requires derating above 85°C due to rising clamping voltage | Choose SMAJ22A only for cost-sensitive, low-surge-risk consumer applications where 35V clamping is acceptable. |
| TPD2E007DRYR | Low-capacitance (3.5pF) dual-channel TVS; 24V working voltage, 12A peak pulse rating, no FET-based clamping stability | Designed for high-speed data lines (e.g., USB 2.0 D+/D−), not power rail protection | Use TPD2E007DRYR for signal-line ESD only; 1N5802US remains required for 22V power rail surge hardening. |
Compared with SMAJ22A and TPD2E007DRYR, the 1N5802US uniquely combines 22V working voltage, 40A surge rating, and thermally stable 28V clamping-making it the only option among the three qualified for industrial USB PD bus and load switch input protection without design compromises.
Availability
1N5802US is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, and IoT edge node power inputs requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/WEEE compliance.
Supply support for 1N5802US 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 1N5802US 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 stable clamping across temperature and current is non-negotiable.
FAQ
What is the maximum continuous operating voltage for the 1N5802US?
The 1N5802US has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously block up to 22V DC or RMS without entering conduction. This makes it suitable for protecting 20V USB PD buses and other 22V-rated power rails where sustained overvoltage must be avoided.
How does the 1N5802US differ from a standard TVS diode in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the 1N5802US uses a surge-rated FET to maintain near-constant clamping-27.5–28V across 24–40A and –40°C to +125°C-due to decreasing RDS(on) under surge conditions.
Can the 1N5802US be used on high-speed data lines like USB 3.2 or PCIe?
No-the 1N5802US has 175pF junction capacitance at 22V, which is too high for high-speed differential signaling. It is intended exclusively for power rail or low-frequency I/O protection. For USB 3.x or PCIe lanes, low-capacitance TVS devices such as RClamp3371ZC (<0.25pF) should be used instead of the 1N5802US.
What is the recommended PCB layout for optimal surge performance of the 1N5802US?
Place the 1N5802US as close as possible to the protected connector. Connect all three IN pins (4–6) via a single short, wide trace to the protected line, and tie all three GND pins (1–3) directly to a solid ground plane using multiple vias. Avoid thermal pads-no heatsinking is needed as energy dissipates internally.
Is the 1N5802US compliant with RoHS and halogen-free standards?
Yes-the 1N5802US is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and lead finish is lead-free, supporting environmentally regulated industrial and consumer deployments.
1N5802US Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- SQ-MELF
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1.1A
- Voltage - Forward (Vf) (Max) @ If:
- 875 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 50 V
- Capacitance @ Vr, F:
- 25pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
1N5802US FAQ
1.How can I place an order for 1N5802US through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5802US 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 1N5802US reliable?
The price and inventory of 1N5802US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5802US is usually 5 days.
3.What payment methods are accepted for 1N5802US?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5802US transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5802US?
1N5802US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5802US 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 1N5802US?
For technical support, including 1N5802US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5802US requirements.
6.How does Aetrix verify that 1N5802US is sourced from the original manufacturer or authorized distributors?
All 1N5802US 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 1N5802US meets industry standards.
7.What is the process for return or replacement of 1N5802US?
All 1N5802US units undergo pre-shipment inspection (PSI). If there is an issue with 1N5802US, 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 1N5802US part is unused and in its original packaging.
Return procedure for 1N5802US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5802US Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
