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onsemi 1.5KE12AG
- Part No.:
- 1.5KE12AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE12AG.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,892
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Product details
Overview
1.5KE12AG from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning surges, and inductive switching transients. It features a 10.2 V working peak reverse voltage (VRWM), 12 V breakdown voltage (VBR) at 1 mA test current, and clamps to 16.7 V at 90 A peak pulse current (IPP), making it suitable for DC power rail protection in industrial power supplies and communication interfaces.
For engineers reviewing the 1.5KE12AG datasheet, pinout, applications, or equivalent options, this axial-leaded Surmetic package TVS offers verified clamping performance, UL 497B recognition for isolated loop circuits, Class 3 HBM ESD rating (>16 kV), sub-1 ns response time, and low zener impedance - critical for robust overvoltage immunity in high-reliability embedded systems.
Technical Context
The 1.5KE12AG operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 12 V nominal breakdown threshold (VBR = 11.4–12.6 V @ IT = 1 mA). Its clamping action limits transient-induced voltage across protected circuitry to ≤16.7 V at 90 A IPP under 1 ms 10/1000 µs waveform conditions.
Thermally, it delivers 1500 W peak pulse power (PPK) at TL ≤ 25°C with 20 °C/W junction-to-lead thermal resistance (RJL), and derates linearly above 75°C ambient. Its low leakage (<5 µA @ VRWM) and fast response (<1 ns) ensure minimal interference during normal operation while enabling effective suppression of nanosecond-scale transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy surges without failure in telecom or industrial power inputs |
| Working Peak Reverse Voltage | 10.2 V - sets maximum continuous DC operating voltage before conduction begins |
| Breakdown Voltage | 11.4–12.6 V @ 1 mA - defines precise avalanche onset range for predictable clamping threshold |
| Clamping Voltage | 16.7 V @ 90 A IPP - ensures protected ICs see no more than 16.7 V during worst-case surge |
| Leakage Current | <5 µA @ 10.2 V - negligible standby power loss and signal integrity impact in always-on circuits |
| Response Time | <1 ns - reacts faster than most microcontroller I/O pins can be damaged by ESD |
| ESD Rating | Class 3 HBM (>16 kV) - meets stringent electrostatic discharge immunity requirements per JEDEC JS-001 |
Pinout & Package
1.5KE12AG uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are solderable, corrosion-resistant, and rated for 260°C for 10 seconds at 1/16 inch from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Ground reference in unidirectional clamp | Connected to system ground or low-side return path; carries surge current to earth during clamping |
| Cathode | Reverse-biased clamping terminal / Protected line connection | Connected to the line being protected (e.g., +12 V rail); conducts only when transient exceeds VRWM |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection - enables use in safety-critical telecom and medical isolation barriers without additional certification burden |
| Pb-Free Surmetic Package | RoHS-compliant axial lead construction with void-free molding - supports automated through-hole assembly and long-term reliability in humid environments |
| Low Clamping Ratio | VC/VBR ≈ 1.39 (16.7 V / 12 V) - minimizes overvoltage stress on downstream MOSFETs or regulators during surge events |
| High Surge Current Capacity | 90 A peak pulse current - handles multiple 10/1000 µs surges per IEC 61000-4-5 Level 4 without degradation |
Applications
| Industrial Power Supply Protection | RS-485 Communication Line Protection |
|---|---|
Use Scenario: Protecting 12 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +12 V rail and chassis ground to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage excursion to ≤16.7 V during 90 A surges, preventing latch-up or gate oxide damage in downstream 16 V-rated power management ICs. | Use Scenario: Safeguarding RS-485 transceivers in factory automation networks exposed to ground potential differences and lightning-induced surges. IC Role / Device Role / Timing Role: Paired TVS devices (one per line) referenced to signal ground, absorbing common-mode transients on A/B differential pairs. Use Value: Maintains signal integrity by clamping transients within 1 ns while adding <1 pF capacitance - avoids data corruption at 10 Mbps baud rates. |
| Medical Equipment Input Protection | Point-of-Sale Terminal Power Input |
Use Scenario: Shielding auxiliary 12 V power inputs in diagnostic imaging peripherals from ESD events and AC line coupling during hospital equipment reconfiguration. IC Role / Device Role / Timing Role: Primary overvoltage guard on external power jack, upstream of fuse and filtering stage. Use Value: UL 497B recognition confirms compliance with medical isolation barrier standards, eliminating need for supplemental creepage/clearance validation. | Use Scenario: Securing 12 V wall adapter inputs in retail POS terminals subjected to frequent plug/unplug cycles and user-handled ESD. IC Role / Device Role / Timing Role: Standalone TVS on DC input connector, shunting transients directly to local ground plane. Use Value: Class 3 HBM rating (>16 kV) ensures immunity to repeated human-body discharges without parameter drift or catastrophic failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Surface-mount SMB package; lower 600 W peak power; 12 V VBR; 19.9 V VC @ 30 A IPP | Requires PCB redesign for SMT placement; better suited for space-constrained consumer electronics vs. industrial through-hole layouts | Select SMBJ12A only when board area is constrained and surge energy is ≤600 W; verify thermal relief for sustained pulse duty cycles |
| 1N6267AG | Same JEDEC device code; identical electrical specs; identical axial Surmetic package; same UL 497B recognition | No functional or mechanical difference - direct manufacturer-equivalent marking variant | 1N6267AG is functionally identical to 1.5KE12AG and may be used interchangeably in legacy designs requiring JEDEC-compliant part numbering |
Compared with SMBJ12A and 1N6267AG, the 1.5KE12AG provides higher surge capacity (1500 W vs. 600 W) in a proven through-hole package ideal for high-reliability industrial serviceability, while 1N6267AG offers identical performance with JEDEC-standardized nomenclature for documentation consistency.
Availability
1.5KE12AG is available at Aetrix Electronics and suitable for industrial power supply protection, RS-485 interface hardening, medical equipment input conditioning, and point-of-sale terminal surge resilience requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE12AG 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
ON Semiconductor is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, medical, and IoT applications.
The 1.5KE12AG belongs to ON Semiconductor's Mosorb™ TVS family - engineered specifically for high-power transient suppression in harsh electromagnetic environments where reliability under repetitive surge stress is mandatory.
FAQ
What is the clamping voltage of the 1.5KE12AG under maximum surge conditions?
The 1.5KE12AG clamps to 16.7 V at its rated peak pulse current of 90 A, measured using the standard 10/1000 µs double-exponential waveform. This value is guaranteed across temperature and represents the maximum voltage imposed on protected circuitry during worst-case transient events - critical for ensuring compatibility with 16 V absolute maximum rated components downstream of the 1.5KE12AG.
Is the 1.5KE12AG RoHS compliant and lead-free?
Yes, the "G" suffix in 1.5KE12AG explicitly denotes a Pb-free Surmetic axial package per ON Semiconductor's lead-free initiative. The device complies with RoHS Directive 2011/65/EU and uses lead-free terminations compatible with standard SnPb and lead-free soldering profiles up to 260°C for 10 seconds at 1/16 inch from the case body.
Does the 1.5KE12AG require a heatsink for continuous operation?
No - the 1.5KE12AG is rated for steady-state power dissipation of only 5.0 W at TL ≤ 75°C with 3/8-inch lead length and does not require a heatsink under normal DC bias conditions. Its primary function is transient suppression, not continuous power handling; thermal design focuses on short-duration pulse energy absorption rather than steady-state cooling.
How does the 1.5KE12AG differ from bidirectional TVS diodes like 1.5KE12A?
The 1.5KE12AG is unidirectional and functions as a single-polarity Zener clamp, conducting only during negative transients relative to its cathode. In contrast, bidirectional variants (e.g., 1.5KE12A) protect both polarities and exhibit symmetric clamping - making them suitable for AC lines or differential signals. The 1.5KE12AG's unidirectional architecture provides lower leakage and tighter VBR tolerance for DC rail protection.
Can the 1.5KE12AG be used in automotive applications?
The 1.5KE12AG meets AEC-Q200 stress test requirements for passive components and operates across −65°C to +175°C, but it is not AEC-Q101 qualified as a discrete semiconductor. For automotive powertrain or ADAS modules, ON Semiconductor recommends AEC-Q101-qualified alternatives such as the SMAJ12A-Q; however, the 1.5KE12AG remains suitable for non-safety-critical aftermarket automotive electronics with validated thermal and surge margins.
1.5KE12AG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 90A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1.5KE12AG FAQ
1.How can I place an order for 1.5KE12AG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12AG 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 1.5KE12AG reliable?
The price and inventory of 1.5KE12AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12AG is usually 5 days.
3.What payment methods are accepted for 1.5KE12AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12AG?
1.5KE12AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12AG 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 1.5KE12AG?
For technical support, including 1.5KE12AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12AG requirements.
6.How does Aetrix verify that 1.5KE12AG is sourced from the original manufacturer or authorized distributors?
All 1.5KE12AG 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 1.5KE12AG meets industry standards.
7.What is the process for return or replacement of 1.5KE12AG?
All 1.5KE12AG units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12AG, 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 1.5KE12AG part is unused and in its original packaging.
Return procedure for 1.5KE12AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12AG Tags
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