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onsemi 1PMT16AT3
- Part No.:
- 1PMT16AT3
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT16AT3.pdf
- Description:
- TVS DIODE 16VWM 26VC POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:7,834
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Product details
Overview
1PMT16AT3 from onsemi is a unidirectional Zener transient voltage suppressor (TVS) in the POWERMITE® package, designed for clamping ESD and surge transients on DC power rails and signal lines. It features a 16 V working peak reverse voltage (VRWM), 26 V maximum clamping voltage at 7.7 A peak pulse current, 200 W peak pulse power (10/1000 µs), <1 ns response time, and 1.1 mm profile height - ideal for space-constrained consumer and industrial power input protection.
For engineers reviewing the 1PMT16AT3 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM matching system operating voltage, clamping voltage margin relative to IC absolute maximum ratings, thermal performance under repeated surge duty, and footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a unidirectional Zener-based TVS diode, leveraging avalanche breakdown to clamp transient overvoltages above its VRWM of 16 V. Its low Zener impedance ensures stable clamping at 26 V up to 7.7 A (10/1000 µs waveform), while its integral heatsink tabs and full metallic cathode tab enable efficient heat dissipation (RJcathode = 3.2 °C/W).
The POWERMITE package (JEDEC DO-216AA) delivers thermal performance comparable to SMA but with 50% smaller footprint (8.45 mm²) and 1.1 mm max height. It supports automated SMT assembly, Pb-free reflow (260°C/10 s), and meets Class 3 HBM ESD rating (>16 kV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 16 V - sets minimum operating voltage threshold before clamping begins; must exceed circuit's normal DC rail voltage. |
| Clamping Voltage (VC) @ IPP | 26 V @ 7.7 A - maximum voltage seen by protected load during 10/1000 µs surge; defines safe margin below downstream IC absolute max ratings. |
| Peak Pulse Power (Ppk) | 200 W @ 10/1000 µs - sustains single high-energy transients without failure; derates linearly above 25°C ambient. |
| Response Time | <1 ns - enables effective suppression of fast ESD events before sensitive circuitry is damaged. |
| Leakage Current (IR) | 1.0 µA @ 16 V - negligible standby power loss and minimal impact on high-impedance bias networks. |
| Package | POWERMITE® (DO-216AA) - surface-mount, 2-pin, 1.1 mm height, 8.45 mm² footprint, full metallic cathode tab for thermal conduction. |
| ESD Rating | Class 3 HBM (>16 kV) - qualifies for direct I/O and power port protection in handheld and portable electronics. |
Pinout & Package
POWERMITE® package (JEDEC DO-216AA) is a 2-terminal surface-mount device with integral heatsink tabs and full metallic cathode bottom. Cathode is marked by a polarity band; lead orientation in tape places cathode (short lead) toward sprocket holes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink / clamping node | Connected to protected line (e.g., VIN); full metallic bottom provides low-thermal-resistance path to PCB copper pour. |
| 2 (Anode) | Reference / ground return | Typically tied to system ground or low-impedance return plane; thermal resistance to anode (RJanode) is 35 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile POWERMITE® package | 1.1 mm max height and 8.45 mm² footprint - enables placement near connectors and IC power pins without height clearance issues. |
| Integral heatsink/locking tabs | Mechanical anchoring and enhanced thermal transfer to PCB - improves reliability under repeated surge stress vs. standard SOD packages. |
| Full metallic cathode bottom | Eliminates flux entrapment and enables direct thermal coupling to internal ground planes - critical for sustained power dissipation. |
| Fast response <1 ns | Clamps sub-nanosecond ESD events before propagation into ICs - essential for USB, HDMI, and other high-speed interface protection. |
| Pb-free and RoHS compliant | Meets global environmental regulations and supports lead-free reflow profiles (260°C/10 s) without solder joint degradation. |
Applications
| USB Power Input Protection | DC-DC Converter Input Rail |
|---|---|
|
Use Scenario: Protecting 5 V USB power inputs against hot-plug surges, ESD, and load-dump transients in portable accessories. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between VBUS and GND, upstream of USB controller and LDO. Use Value: Clamps transients to ≤26 V while maintaining <1 µA leakage - prevents latch-up and damage to USB PHY and power management ICs. |
Use Scenario: Safeguarding the input stage of buck converters in industrial sensors and IoT nodes exposed to 24 V supply line transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on converter VIN pin, coordinated with bulk capacitance and upstream fuse. Use Value: Absorbs 200 W surges without degradation, enabling robust operation in noisy factory environments with minimal board area. |
| Smartphone Charging Port | POS Terminal Power Interface |
|
Use Scenario: Securing micro-USB or USB-C charging ports against contact ESD and cable-induced surges in handheld devices. IC Role / Device Role / Timing Role: First-line transient suppressor on VBUS line, positioned adjacent to connector to minimize inductance. Use Value: 1.1 mm height allows co-location with ultra-thin connectors; >16 kV HBM rating meets IEC 61000-4-2 Level 4 compliance. |
Use Scenario: Protecting 12–24 V auxiliary power inputs in point-of-sale terminals subject to accidental AC mains coupling and lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on main power entry, sized to handle repetitive 10/1000 µs pulses per IEC 61000-4-5. Use Value: 200 W peak power and 50% smaller footprint than SMA allow dense multi-rail protection without sacrificing thermal margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Same VRWM (16 V) and VC (26 V), but SMA package (2.5 mm height, 2× larger footprint) | Higher thermal mass suits higher average power; less suitable for ultra-thin or high-density designs | Choose SMAJ16A only if board height >2.5 mm is acceptable and thermal cycling dominates over space constraints. |
| 1.5SMC16A | Higher Ppk (1500 W @ 10/1000 µs), but larger SMC package (7.1 mm × 6.2 mm, 2.6 mm height) | Targeted at heavy-duty industrial surge protection; incompatible with compact consumer layouts | Select 1.5SMC16A when system-level surge testing requires >1000 W capability and board space permits larger footprint. |
Compared with SMAJ16A and 1.5SMC16A, the 1PMT16AT3 delivers identical electrical clamping performance in a 50% smaller footprint and half the height - making it optimal for modern miniaturized power interfaces where thermal design is managed via PCB copper and not package mass.
Availability
1PMT16AT3 is available at Aetrix Electronics and suitable for USB power input protection, DC-DC converter input rails, smartphone charging ports, and POS terminal power interfaces requiring stable component supply, consistent Pb-free compliance, and long-term lifecycle support.
Supply support for 1PMT16AT3 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
onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1PMT16AT3 belongs to the 1PMT5.0AT1G/T3G Series of Zener transient voltage suppressors, engineered specifically for compact, high-reliability overvoltage protection in space-constrained portable and industrial electronics.
FAQ
What is the working peak reverse voltage (VRWM) of the 1PMT16AT3?
The 1PMT16AT3 has a working peak reverse voltage (VRWM) of 16 V, meaning it remains non-conductive below this voltage and begins clamping transients above it. This value is confirmed in the Electrical Characteristics table on page 3 of the official datasheet, where VRWM is specified as 16 V for the 1PMT16AT1G/T3G variant. The 1PMT16AT3 shares identical electrical specs with the 1PMT16AT1G, differing only in packaging configuration (tape-and-reel quantity).
Does the 1PMT16AT3 meet RoHS and Pb-free requirements?
Yes, the 1PMT16AT3 is Pb-free and RoHS compliant, as explicitly stated in the "Specification Features" section and confirmed in the "Ordering Information" table. The "G" suffix in the part family (1PMT16AT1G/T3G) denotes the Pb-free package, and the device is qualified for lead-free reflow soldering at 260°C for 10 seconds - fully aligned with JEDEC J-STD-020 standards.
What is the maximum clamping voltage of the 1PMT16AT3 at its rated peak pulse current?
The 1PMT16AT3 has a maximum clamping voltage (VC) of 26 V at a peak pulse current (IPP) of 7.7 A under the standard 10/1000 µs waveform. This value is directly specified in the Electrical Characteristics table (page 3) and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with downstream ICs rated for ≤30 V absolute maximum.
Can the 1PMT16AT3 be used in bidirectional protection circuits?
No, the 1PMT16AT3 is a unidirectional TVS diode and is not suitable for bidirectional signal line protection. Its electrical characteristics - including polarity marking, cathode/anode pinout, and asymmetric IV curve - are defined only for reverse-biased operation. For bidirectional applications such as RS-485 or CAN bus, a dedicated bidirectional TVS like the SMBJ16CA must be selected instead.
What is the thermal resistance from junction to cathode tab (RJcathode) for the 1PMT16AT3?
The thermal resistance from junction to cathode tab (RJcathode) for the 1PMT16AT3 is 3.2 °C/W, as listed in the "Maximum Ratings" table on page 2 of the datasheet. This low value reflects the full metallic bottom construction of the POWERMITE® package, enabling efficient heat transfer to the PCB copper pour - a key advantage over plastic-bodied SOD or SMA packages with higher thermal resistance.
1PMT16AT3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-216AA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Powermite
1PMT16AT3 FAQ
1.How can I place an order for 1PMT16AT3 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT16AT3 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 1PMT16AT3 reliable?
The price and inventory of 1PMT16AT3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT16AT3 is usually 5 days.
3.What payment methods are accepted for 1PMT16AT3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT16AT3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT16AT3?
1PMT16AT3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT16AT3 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 1PMT16AT3?
For technical support, including 1PMT16AT3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT16AT3 requirements.
6.How does Aetrix verify that 1PMT16AT3 is sourced from the original manufacturer or authorized distributors?
All 1PMT16AT3 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 1PMT16AT3 meets industry standards.
7.What is the process for return or replacement of 1PMT16AT3?
All 1PMT16AT3 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT16AT3, 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 1PMT16AT3 part is unused and in its original packaging.
Return procedure for 1PMT16AT3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT16AT3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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