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onsemi 1PMT16AT1
- Part No.:
- 1PMT16AT1
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT16AT1.pdf
- Description:
- TVS DIODE 16VWM 26VC POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:6,504
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Product details
Overview
1PMT16AT1 from onsemi is a unidirectional Zener transient voltage suppressor (TVS) in the POWERMITE® package, designed for clamping ESD and surge transients in low-voltage DC power rails. 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. It is used in portable electronics power input protection.
For engineers reviewing the 1PMT16AT1 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 PCB space constraints where its 8.45 mm² footprint and integral heatsink deliver high power density.
Technical Context
The 1PMT16AT1 operates as a unidirectional Zener-based TVS diode, conducting only during reverse overvoltage events above its breakdown threshold (17.8–19.7 V). Its clamping action limits transient energy delivered to downstream circuitry by diverting surge current through its low dynamic impedance path to ground.
Thermal design relies on its cathode-tab mounting: junction-to-cathode thermal resistance is 3.2 °C/W, enabling effective heat transfer to PCB copper when soldered to a thermal pad. Its 1000 W peak power rating applies to 8/20 µs waveforms, while 200 W applies to 10/1000 µs pulses - critical for IEC 61000-4-5 compliance planning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 16 V - must be ≥ nominal DC rail voltage to avoid leakage during normal operation |
| VBR (min/typ/max) | 17.8 / 18.75 / 19.7 V - defines turn-on threshold; ensures reliable conduction before downstream IC damage |
| VC @ IPP | 26 V @ 7.7 A - clamping voltage seen by protected circuit during 10/1000 µs surge |
| Peak Pulse Power | 200 W (10/1000 µs) - determines survivability of common lightning/surge test waveforms |
| Response Time | <1 ns - enables protection of fast-edge digital interfaces and high-speed power rails |
| ESD Rating | Class 3 HBM (>16 kV) - qualifies for direct user-interface port protection without external shielding |
| Package Height | Max 1.1 mm - enables use in ultra-thin mobile devices and stacked PCB assemblies |
| Footprint Area | 8.45 mm² - 50% smaller than SMA, reducing board area while maintaining thermal performance |
Pinout & Package
1PMT16AT1 is housed in the POWERMITE® (DO−216AA) surface-mount package with two terminals: Cathode (Pin 1, marked with polarity band) and Anode (Pin 2). The full metallic bottom serves as an integral heatsink and provides low-inductance grounding. Mounting requires a thermal pad connected to large copper pour for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient current sink node | Connected to system ground or low-impedance return path; tab must be soldered to thermal pad for rated power handling |
| 2 (Anode) | Protected line connection | Connected to the DC rail or signal line requiring overvoltage protection; forms series path with load |
Key Features
| Feature | Design Value |
|---|---|
| Integral heatsink tabs | Enables 200 W pulse handling in 1.1 mm height via direct thermal coupling to PCB copper |
| Full metallic bottom | Eliminates flux entrapment during reflow and reduces thermal resistance to ambient by 30% vs. standard plastic SMD |
| JEDEC DO−216AA registration | Ensures compatibility with standard automated placement equipment and IPC-7351 land patterns |
| Pb−Free & RoHS compliant | Meets global environmental regulations without derating or reliability compromise |
| Cathode band marking | Enables rapid visual polarity verification during manual inspection and rework |
Applications
| USB Power Input Protection | Smartphone Battery Charging Circuit |
|---|---|
|
Use Scenario: Protects USB Type-C PD input stage from hot-plug transients and adapter surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBUS and GND, clamping spikes before they reach buck converter input. Use Value: 26 V clamping ensures safe operation below 28 V absolute max rating of common PMICs; 1.1 mm height avoids interference with flex cable routing. |
Use Scenario: Shields battery management IC from voltage reversals and charger-induced overshoot during fast charging. IC Role / Device Role / Timing Role: Reverse-polarity and surge protector on battery terminal side of charge FET, activated only during fault conditions. Use Value: 16 V VRWM matches typical Li-ion 4S pack nominal voltage (14.8 V); low leakage (<1 µA) prevents parasitic drain during storage. |
| Industrial Sensor Node Power Rail | POS Terminal Keypad Interface |
|
Use Scenario: Secures 24 V DC input of wireless sensor nodes against induced lightning surges in factory environments. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on main power entry, upstream of DC/DC converter. Use Value: 200 W peak power withstands IEC 61000-4-5 Level 3 (1 kV/2 Ω) tests; 8.45 mm² footprint conserves space on compact sensor PCBs. |
Use Scenario: Guards membrane keypad matrix lines against ESD discharge from human touch in retail environments. IC Role / Device Role / Timing Role: Low-capacitance TVS on each row/column line, grounded to chassis to shunt HBM pulses. Use Value: Class 3 HBM rating (>16 kV) eliminates need for additional ESD arrays; small size allows placement directly at connector. |
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), but SMA package (2.5 mm height, 29.4 mm² footprint); 400 W peak power (10/1000 µs) | Higher surge rating suits industrial mains-connected equipment; larger size incompatible with ultra-thin consumer devices | Select SMAJ16A when higher single-pulse energy tolerance is required and board height >2.5 mm is acceptable |
| 1.5SMC16A | Same VRWM (16 V), SMC package (2.3 mm height, 34.5 mm² footprint); 1500 W peak power (10/1000 µs) | Designed for AC line and telecom surge standards (IEC 61000-4-5 Level 4); not optimized for space-constrained DC rails | Choose 1.5SMC16A for high-energy AC/DC front-end protection where PCB area is less constrained than height |
Compared with SMAJ16A and 1.5SMC16A, the 1PMT16AT1 delivers identical voltage protection with 50% smaller footprint and half the height-enabling integration into next-generation portable electronics where thermal performance must coexist with extreme miniaturization.
Availability
1PMT16AT1 is available at Aetrix Electronics and suitable for USB power input protection, smartphone battery charging circuits, and industrial sensor node power rails requiring stable component supply across high-mix production runs.
Supply support for 1PMT16AT1 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 supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1PMT16AT1 belongs to the 1PMT5.0AT1G/T3G Series of Zener transient voltage suppressors, engineered specifically for space-constrained, high-reliability DC power rail protection in portable and battery-powered systems.
FAQ
What is the working peak reverse voltage (VRWM) of the 1PMT16AT1?
The 1PMT16AT1 has a working peak reverse voltage (VRWM) of 16 V. This value represents the maximum continuous DC or peak reverse voltage the device can withstand without entering avalanche conduction. It is selected to match or slightly exceed the nominal operating voltage of the protected circuit - for example, 16 V VRWM aligns with 12–15 V DC rails in portable electronics. Operating above VRWM risks excessive leakage current and premature clamping.
Does the 1PMT16AT1 meet industry ESD standards?
Yes, the 1PMT16AT1 is rated for Class 3 Human Body Model (HBM) ESD protection, exceeding 16 kV per ANSI/ESDA/JEDEC JS-001. This qualification is verified per standardized testing and confirms suitability for direct interface protection in handheld devices, USB ports, and keypad lines where user contact is frequent. Its sub-1 ns response time ensures clamping occurs before ESD energy couples into sensitive silicon.
How does the POWERMITE® package of the 1PMT16AT1 improve thermal performance?
The 1PMT16AT1 uses the POWERMITE® (DO−216AA) package with a full metallic bottom that functions as an integral heatsink. Its junction-to-cathode thermal resistance is 3.2 °C/W, significantly lower than standard SOD-123 or SMA packages. When soldered to a properly sized thermal pad on the PCB, this design enables the 1PMT16AT1 to dissipate 200 W pulses without exceeding safe junction temperatures - achieving SMA-level thermal performance in 50% less board area.
Can the 1PMT16AT1 be used in bidirectional protection configurations?
No, the 1PMT16AT1 is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown voltage, clamping behavior, and leakage - are specified only for reverse-biased conditions. For AC signal lines or applications requiring symmetrical clamping (e.g., RS-485, CAN bus), a dedicated bidirectional TVS such as the SMBJ16CA must be used instead of the 1PMT16AT1.
What is the maximum clamping voltage of the 1PMT16AT1 at its rated peak pulse current?
The 1PMT16AT1 has a maximum clamping voltage (VC) of 26 V at a peak pulse current (IPP) of 7.7 A, tested with a 10/1000 µs waveform. This clamping voltage is the upper limit of voltage imposed on the protected circuit during a surge event. Designers use this value to verify margin between VC and the absolute maximum voltage rating of downstream ICs - for instance, ensuring VC remains below 28 V for a PMIC with 28 V absolute max rating.
1PMT16AT1 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
1PMT16AT1 FAQ
1.How can I place an order for 1PMT16AT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT16AT1 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 1PMT16AT1 reliable?
The price and inventory of 1PMT16AT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT16AT1 is usually 5 days.
3.What payment methods are accepted for 1PMT16AT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT16AT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT16AT1?
1PMT16AT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT16AT1 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 1PMT16AT1?
For technical support, including 1PMT16AT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT16AT1 requirements.
6.How does Aetrix verify that 1PMT16AT1 is sourced from the original manufacturer or authorized distributors?
All 1PMT16AT1 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 1PMT16AT1 meets industry standards.
7.What is the process for return or replacement of 1PMT16AT1?
All 1PMT16AT1 units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT16AT1, 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 1PMT16AT1 part is unused and in its original packaging.
Return procedure for 1PMT16AT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT16AT1 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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