My Inquiry
My Account
onsemi 1PMT12AT3G
- Part No.:
- 1PMT12AT3G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-216AA
- Datasheet:
-
1PMT12AT3G.pdf
- Description:
- TVS DIODE 12VWM 19.9VC POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:2,218
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1PMT12AT3G from onsemi is a unidirectional Zener transient voltage suppressor (TVS) in POWERMITE® (DO-216AA) package, designed for clamping ESD and surge transients in low-voltage DC lines. It features 12 V working peak reverse voltage (VRWM), 19.9 V maximum clamping voltage at 10.1 A peak pulse current, 200 W peak power rating (10/1000 µs), <1 ns response time, and 1.1 mm max height for space-constrained portable electronics.
For engineers reviewing the 1PMT12AT3G datasheet, pinout, applications, or equivalent options, key selection criteria include its 12 V standoff voltage compatibility with 3.3 V–5 V logic rails, low-profile surface-mount footprint (8.45 mm²), integral heatsink tabs for thermal reliability, and Class 3 HBM ESD rating (>16 kV).
Technical Context
The 1PMT12AT3G operates as a unidirectional Zener-based TVS diode, conducting only in reverse breakdown to clamp overvoltage events while remaining high-impedance under normal bias. Its clamping action begins at 13.3 V (min VBR @ 1 mA) and limits transient energy within 19.9 V at 10.1 A IPP, enabling robust protection of downstream ICs without forward conduction interference.
Thermally, it leverages a full metallic cathode tab (RJcathode = 3.2 °C/W) and anode lead (RJanode = 35 °C/W) to sustain 200 W single-pulse surges at TA = 25°C, with derating to zero power above 150°C ambient. The POWERMITE package delivers SMA-equivalent thermal performance in 50% less footprint area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 12 V - Matches nominal 12 V supply rails; ensures no leakage conduction during normal operation. |
| Breakdown Voltage (VBR) @ IT = 1 mA | 13.3–14.7 V - Defines precise turn-on threshold for transient clamping initiation. |
| Clamping Voltage (VC) @ IPP = 10.1 A | 19.9 V - Maximum voltage seen by protected circuit during worst-case 10/1000 µs surge. |
| Peak Pulse Power (Ppk) | 200 W @ 10/1000 µs - Sustains industrial-grade surge immunity per IEC 61000-4-5 Level 3. |
| Response Time | <1 ns - Fast enough to protect CMOS inputs before damage occurs during ESD events. |
| ESD Rating (HBM) | >16 kV - Meets Class 3 human-body model requirements for handheld device interfaces. |
| Package | POWERMITE® (DO-216AA) - 1.1 mm height, 8.45 mm² footprint, JEDEC-registered surface-mount package. |
Pinout & Package
1PMT12AT3G uses a 2-terminal POWERMITE® (DO-216AA) package with cathode and anode terminals. The package features integral heatsink/locking tabs, full metallic bottom for solder thermal transfer, and polarity band indicating cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient clamp output / heat sink node | Connected to protected line; carries full surge current and serves as primary thermal path to PCB copper. |
| 2 (Anode) | Reference / ground return | Connected to system ground; completes clamping loop and provides secondary thermal path via lead. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile POWERMITE® package | 1.1 mm max height enables use in ultra-thin smartphones and wearables where SMA is too tall. |
| Integral heatsink/locking tabs | Enhances mechanical retention and thermal dissipation without requiring external heatsinks or large copper pours. |
| Full metallic cathode bottom | Eliminates flux entrapment during reflow and improves thermal coupling to PCB ground plane. |
| Pb-free and RoHS-compliant | Meets global environmental regulations and supports lead-free manufacturing processes (reflow profile up to 260°C/10 s). |
Applications
| USB 2.0 Data Lines | Smartphone Battery Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines from ESD discharge during cable insertion and hot-plug events. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between connector and USB transceiver IC. Use Value: Limits voltage to ≤19.9 V during 10.1 A surge, preventing latch-up or gate oxide damage in 3.3 V PHY circuits. |
Use Scenario: Safeguarding battery management IC inputs against voltage spikes induced by load switching or charger faults. IC Role / Device Role / Timing Role: Standoff-rated (12 V) clamp on battery sense or enable lines interfacing with 12 V nominal packs. Use Value: Clamps transients before they propagate to precision analog front-ends, preserving ADC accuracy and fault detection integrity. |
| Industrial Sensor Interface | Point-of-Sale Terminal Power Rails |
Use Scenario: Shielding 4–20 mA loop-powered sensor outputs from induced lightning surges on long cables. IC Role / Device Role / Timing Role: Primary surge suppression element on sensor output line before signal conditioning amplifier. Use Value: Withstands 200 W pulses without degradation, maintaining signal integrity across temperature range (−55°C to +150°C). |
Use Scenario: Protecting 12 V DC input rails in compact POS terminals exposed to AC line transients and EFT bursts. IC Role / Device Role / Timing Role: Front-end TVS on main power entry before DC-DC converter input stage. Use Value: Small 8.45 mm² footprint allows placement near connector without sacrificing board real estate in dense layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Same VRWM (12 V), higher VC (20.9 V @ 10.3 A), SMA package (2.7 mm height, 2× larger footprint) | Less suitable for ultra-low-profile designs; better for high-volume automated assembly with standard pick-and-place feeders | Select SMAJ12A if board height budget permits and legacy SMA tooling is in place. |
| 1.5SMC12A | Higher Ppk (1500 W), DO-214AB package (3.5 mm height, 12.5 mm² footprint), slower response (~1.2 ns) | Targeted at higher-energy surges (e.g., AC mains); over-specified for portable DC rail protection | Choose 1.5SMC12A only when protecting against 8/20 µs surges exceeding 1000 W peak power. |
Compared with SMAJ12A and 1.5SMC12A, the 1PMT12AT3G delivers identical 12 V standoff and superior space efficiency-critical for modern portable devices-while maintaining sufficient 200 W surge capability for I/O-level protection without over-engineering.
Availability
1PMT12AT3G is available at Aetrix Electronics and suitable for smartphone interface protection, battery management systems, industrial sensor modules, and point-of-sale terminal power rails requiring stable component supply and consistent Pb-free compliance.
Supply support for 1PMT12AT3G 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 management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1PMT12AT3G belongs to the 1PMT5.0AT1G/T3G Series of Zener transient voltage suppressors, engineered specifically for compact, high-reliability DC line protection in portable and space-constrained electronics.
FAQ
What is the clamping voltage of the 1PMT12AT3G at its rated peak pulse current?
The 1PMT12AT3G has a maximum clamping voltage (VC) of 19.9 V when subjected to its rated peak pulse current of 10.1 A under the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on the protected circuit during a surge event. The 1PMT12AT3G maintains this clamping performance across its specified operating temperature range.
Is the 1PMT12AT3G suitable for protecting 5 V logic interfaces?
No-the 1PMT12AT3G is not recommended for 5 V logic interfaces because its 12 V working peak reverse voltage (VRWM) exceeds typical 5 V rail tolerances and may allow damaging overvoltage to reach downstream components before clamping activates. For 5 V lines, a lower VRWM device such as the 1PMT5.0AT3G (5.0 V VRWM) is appropriate. The 1PMT12AT3G is intended for 12 V nominal systems.
Does the 1PMT12AT3G have bidirectional or unidirectional polarity?
The 1PMT12AT3G is a unidirectional transient voltage suppressor, meaning it conducts only in reverse bias to clamp positive transients on the cathode side. It behaves as an open circuit under forward bias and does not suppress negative-going transients on the anode. Polarity is marked by a band on the cathode end, and correct orientation is essential for proper protection function.
What is the thermal resistance from junction to cathode tab for the 1PMT12AT3G?
The thermal resistance from junction to cathode (RJcathode) for the 1PMT12AT3G is 3.2 °C/W, measured at a cathode tab temperature (Ttab) of 75°C. This low value reflects the full metallic bottom construction and integral heatsink tabs, enabling efficient heat transfer from the silicon die to the PCB ground plane. This parameter is critical for calculating steady-state power dissipation limits in continuous operation.
Can the 1PMT12AT3G be used in automotive applications?
The 1PMT12AT3G operates across −55°C to +150°C and meets AEC-Q200 stress test recommendations for passive components, but it is not officially AEC-Q101 qualified as a discrete TVS diode. For production automotive applications requiring qualification, designers should verify compliance with specific vehicle manufacturer requirements and consider AEC-Q101-certified alternatives. The 1PMT12AT3G is widely used in industrial and consumer automotive-adjacent systems (e.g., infotainment accessories).
1PMT12AT3G 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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- 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
1PMT12AT3G FAQ
1.How can I place an order for 1PMT12AT3G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PMT12AT3G 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 1PMT12AT3G reliable?
The price and inventory of 1PMT12AT3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PMT12AT3G is usually 5 days.
3.What payment methods are accepted for 1PMT12AT3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PMT12AT3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PMT12AT3G?
1PMT12AT3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PMT12AT3G 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 1PMT12AT3G?
For technical support, including 1PMT12AT3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PMT12AT3G requirements.
6.How does Aetrix verify that 1PMT12AT3G is sourced from the original manufacturer or authorized distributors?
All 1PMT12AT3G 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 1PMT12AT3G meets industry standards.
7.What is the process for return or replacement of 1PMT12AT3G?
All 1PMT12AT3G units undergo pre-shipment inspection (PSI). If there is an issue with 1PMT12AT3G, 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 1PMT12AT3G part is unused and in its original packaging.
Return procedure for 1PMT12AT3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PMT12AT3G 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
Tech Hub
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
