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onsemi 1PMT16AT1G
- Part No.:
- 1PMT16AT1G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT16AT1G.pdf
- Description:
- TVS DIODE 16VWM 26VC POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:9,452
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Product details
Overview
1PMT16AT1G 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 circuits. 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 power rating (10/1000 µs), <1 ns response time, and 1.1 mm max height. It is used to protect USB ports, I/O lines, and power rails in portable electronics.
For engineers reviewing the 1PMT16AT1G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to system operating voltage, surge current capability under 8/20 µs vs. 10/1000 µs waveforms, thermal performance via cathode-tab mounting, JEDEC DO−216AA compliance, and Pb-free RoHS status for surface-mount assembly.
Technical Context
The 1PMT16AT1G operates as a unidirectional Zener-based TVS diode, conducting only in reverse breakdown above its VRWM of 16 V. Its clamping action limits transient overvoltage to ≤26 V at 7.7 A IPP, with low dynamic impedance enabling fast energy diversion away from protected ICs.
It uses a thermally optimized POWERMITE (DO−216AA) package with integral heatsink tabs and full metallic cathode tab (Pin 2), achieving 3.2 °C/W junction-to-cathode thermal resistance. This allows sustained power dissipation up to 23 W at Ttab = 75°C, supporting high-reliability protection in space-constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 16 V - Maximum continuous DC or peak AC voltage the device blocks without clamping; sets minimum system operating voltage compatibility. |
| Clamping Voltage (VC) @ IPP | 26 V @ 7.7 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; defines safe overvoltage margin for downstream ICs. |
| Peak Pulse Power (Ppk) | 200 W @ 10/1000 µs - Transient energy handling capacity; determines survivability against common IEC 61000-4-5 surges. |
| Response Time | <1 ns - Enables suppression before sensitive logic or analog circuitry is damaged by fast-rising ESD events. |
| ESD Rating (HBM) | >16 kV - Confirmed robustness against human-body model discharges, critical for handheld and interface port protection. |
| Package | POWERMITE® (DO−216AA), 8.45 mm² footprint, 1.1 mm max height - Enables ultra-compact placement near connectors or IC pins with minimal PCB area impact. |
| Thermal Resistance (Junction-to-Cathode Tab) | 3.2 °C/W - Allows direct thermal coupling to copper pour or heatsink via cathode tab (Pin 2), improving long-pulse and repetitive surge reliability. |
Pinout & Package
The 1PMT16AT1G is housed in the POWERMITE® (JEDEC DO−216AA) surface-mount package, featuring a full metallic cathode tab for enhanced thermal conduction and mechanical anchoring. The package measures 1.75–2.05 mm × 1.75–2.18 mm with 0.85–1.15 mm thickness and 1.1 mm maximum height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected line (e.g., USB D+, HDMI TMDS+); polarity band marks this terminal; must be routed to low-impedance ground plane or chassis via thermal pad. |
| 2 | Anode | Connected to system ground; full metallic bottom serves as primary thermal path and mechanical lock; requires solder mask defined thermal relief for manufacturability. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile POWERMITE® package | 1.1 mm max height enables use in ultra-thin consumer devices where SMA or SOD-123 packages exceed mechanical clearance limits. |
| Integral heatsink/locking tabs | Metallic cathode tab (Pin 2) provides dual function: thermal conduction path to PCB copper and mechanical retention during reflow, reducing tombstoning risk. |
| Full metallic bottom | Eliminates flux entrapment during soldering, ensuring reliable void-free joints and consistent thermal performance across production lots. |
| Pb-free and RoHS compliant | Meets global environmental regulations and supports lead-free reflow profiles (260°C/10 s), compatible with standard SMT assembly lines. |
Applications
| USB 2.0 Data Lines | Smartphone Power Rails |
|---|---|
Use Scenario: Protecting D+ and D− lines in mobile phone USB interfaces against ESD events during cable insertion/removal and user handling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at connector, clamping transients before they reach USB transceiver IC. Use Value: 26 V clamping voltage ensures safe margin above 3.3 V USB signaling, while <1 ns response prevents data corruption or PHY latch-up during ±8 kV HBM discharge. | Use Scenario: Safeguarding 3.3 V or 5 V system power rails feeding baseband processors and PMICs in battery-powered handsets. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between rail and ground, absorbing load-dump or inductive switching spikes from DC-DC converters. Use Value: 200 W peak power rating handles 10/1000 µs surges up to 7.7 A, and 3.2 °C/W RJcathode enables effective heat spreading into internal ground layers. |
| Industrial Sensor I/O | POS Terminal Keypad Interface |
Use Scenario: Shielding 0–10 V or 4–20 mA analog sensor inputs in factory automation equipment from induced lightning surges on long cables. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal line, coordinated with series current-limiting resistor and optional RC filter. Use Value: 16 V VRWM matches typical industrial sensor supply headroom, and 26 V VC ensures ADC input stays within absolute maximum ratings during 1 kV/500 A 8/20 µs transients. | Use Scenario: Guarding membrane keypad scan lines in retail point-of-sale terminals against ESD from customer finger contact. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) unidirectional TVS placed at microcontroller GPIO pins driving keypad rows/columns. Use Value: 8.45 mm² footprint fits tight routing near MCU, and >16 kV HBM rating exceeds IEC 61000-4-2 Level 4 requirements without degrading touch response speed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Same VRWM (16 V) and VC (26 V), but SMA package (3.5 mm height, 2× larger footprint); higher RJA (500 °C/W vs. 248 °C/W). | Less suitable for ultra-low-profile designs; requires more PCB area and offers inferior thermal performance under repetitive surges. | Select SMAJ16A only if legacy layout compatibility or higher single-pulse energy (400 W) is required and height is not constrained. |
| 1.5SMC16A | Higher Ppk (1500 W @ 10/1000 µs), but larger SMC package (7.1 mm × 6.2 mm); VRWM identical, VC slightly higher (27.7 V). | Targeted at high-energy industrial surge protection (IEC 61000-4-5), not portable electronics; incompatible with fine-pitch or thin-profile assemblies. | Choose 1.5SMC16A when protecting AC mains-fed equipment or where 1500 W surge immunity is mandatory and board space permits. |
Compared with SMAJ16A and 1.5SMC16A, the 1PMT16AT1G delivers identical electrical protection performance in a 50% smaller footprint and 1.1 mm profile, with superior thermal conduction via its cathode-tab design-making it optimal for modern compact, thermally demanding portable and embedded systems.
Availability
1PMT16AT1G is available at Aetrix Electronics and suitable for USB interface protection, smartphone power rail safeguarding, and industrial sensor I/O conditioning requiring stable component supply, RoHS-compliant sourcing, and consistent tape-and-reel delivery for SMT production.
Supply support for 1PMT16AT1G 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The 1PMT16AT1G belongs to onsemi's POWERMITE® TVS diode family, engineered specifically for space-constrained, high-reliability transient suppression in portable and battery-powered systems where thermal management and mechanical profile are critical.
FAQ
What is the exact working peak reverse voltage (VRWM) specification for the 1PMT16AT1G?
The 1PMT16AT1G has a specified working peak reverse voltage (VRWM) of 16 V, meaning it reliably blocks voltages up to this level in normal operation without entering breakdown. This value is confirmed in the Electrical Characteristics table on page 3 of the official datasheet (1PMT5.0AT3/D, Rev. 10), where VRWM is listed as "16" for the 1PMT16AT1G/T3G variant. It is selected to match 15 V nominal rails with adequate safety margin.
Does the 1PMT16AT1G have bidirectional or unidirectional transient suppression capability?
1PMT16AT1G is a unidirectional transient voltage suppressor, designed to clamp only reverse-biased transients. Its pinout (Pin 1 = Cathode, Pin 2 = Anode) and electrical characteristics-including forward voltage testing and absence of symmetric breakdown parameters-confirm unidirectional operation. It must be oriented with cathode toward the protected line and anode to ground, unlike bidirectional TVS devices which suppress both polarities.
What is the maximum clamping voltage (VC) of the 1PMT16AT1G under standard test conditions?
The 1PMT16AT1G exhibits a maximum clamping voltage (VC) of 26 V when subjected to its rated peak pulse current (IPP) of 7.7 A using the 10/1000 µs waveform. This value is explicitly stated in the Electrical Characteristics table (page 3) and defines the upper voltage limit imposed on the protected circuit during surge events, ensuring downstream components remain within safe operating ranges.
How does the POWERMITE® package of the 1PMT16AT1G improve thermal performance compared to standard SOD-123 or SMA packages?
The 1PMT16AT1G's POWERMITE® package achieves a junction-to-cathode thermal resistance (RJcathode) of 3.2 °C/W, significantly lower than typical SOD-123 (~100 °C/W) or SMA (~50 °C/W) packages. This is enabled by its full metallic cathode tab (Pin 2), which provides direct thermal conduction to PCB copper pours. As a result, the 1PMT16AT1G sustains higher average power and survives repetitive surges better than comparably rated discrete TVS diodes in smaller footprints.
Is the 1PMT16AT1G RoHS compliant and lead-free?
Yes, the 1PMT16AT1G is Pb-free and RoHS compliant, as confirmed in the Specification Features section ("These Devices are Pb−Free and are RoHS Compliant") and the Ordering Information table ("1PMTxxAT1G - POWERMITE (Pb−Free)"). The "G" suffix in the part number explicitly denotes the Pb-free package variant, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for standard reflow processing.
1PMT16AT1G 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
1PMT16AT1G FAQ
1.How can I place an order for 1PMT16AT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT16AT1G 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 1PMT16AT1G reliable?
The price and inventory of 1PMT16AT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT16AT1G is usually 5 days.
3.What payment methods are accepted for 1PMT16AT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT16AT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT16AT1G?
1PMT16AT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT16AT1G 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 1PMT16AT1G?
For technical support, including 1PMT16AT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT16AT1G requirements.
6.How does Aetrix verify that 1PMT16AT1G is sourced from the original manufacturer or authorized distributors?
All 1PMT16AT1G 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 1PMT16AT1G meets industry standards.
7.What is the process for return or replacement of 1PMT16AT1G?
All 1PMT16AT1G units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT16AT1G, 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 1PMT16AT1G part is unused and in its original packaging.
Return procedure for 1PMT16AT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT16AT1G 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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