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onsemi 1.5KE24AG
- Part No.:
- 1.5KE24AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE24AG.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,642
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Product details
Overview
1.5KE24AG from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics. It features a 24 V nominal breakdown voltage (VBR), 33.2 V maximum clamping voltage (VC) at 45 A peak pulse current (IPP), and <1 ns response time-ideal for safeguarding power supplies, industrial controls, and communication interfaces against ESD and lightning-induced surges.
For engineers reviewing the 1.5KE24AG datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (20.5 V), clamping performance under 1 ms transients, UL 497B certification for isolated loop protection, and axial lead (Case 41A) mechanical compatibility in high-reliability board-level surge suppression.
Technical Context
The 1.5KE24AG operates as a Zener-based avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its 22.8–25.2 V breakdown range at 1 mA test current. Its low dynamic impedance and fast turn-on enable sub-nanosecond voltage limiting during transient events such as IEC 61000-4-2 ESD or ISO 7637-2 load dump spikes.
Designed for lead temperature ≤25°C operation, it delivers 1500 W nonrepetitive peak power per 1 ms pulse (Figure 5 waveform), with thermal resistance of 20 °C/W (Junction-to-Lead) and steady-state dissipation derated to 5.0 W at 75°C ambient. The device meets Class 3 HBM ESD rating (>16 kV) and is Pb-free per RoHS.
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 rails |
| Working Peak Reverse Voltage (VRWM) | 20.5 V - sets minimum system operating voltage threshold before clamping activates |
| Breakdown Voltage (VBR) | 22.8–25.2 V @ 1 mA - defines precise avalanche onset for predictable overvoltage protection |
| Clamping Voltage (VC) | 33.2 V @ 45 A IPP - limits protected circuit voltage to safe level during worst-case transient |
| Response Time | <1 ns - ensures clamping initiates before downstream ICs experience damaging overvoltage |
| Leakage Current | <5 µA @ 20.5 V - negligible standby power loss and signal integrity impact in DC-biased lines |
| ESD Rating | Class 3 HBM (>16 kV) - qualifies for direct handling in automated assembly and end-user environments |
Pinout & Package
1.5KE24AG uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a colored band. Leads are tin-plated, solderable at 260°C for 10 seconds at 1/16 inch from case body. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during reverse transient |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., +24 V rail); carries full surge current into ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection in telecom and industrial interfaces-meets strike voltage, endurance, and dielectric withstand requirements |
| Low Clamping Ratio | VC/VBR ≈ 1.46 - tight voltage margin ensures protected ICs stay within absolute maximum ratings during surge |
| Pb-Free Construction | RoHS-compliant materials and finish - supports environmental compliance without sacrificing surge robustness |
| High Surge Current Capacity | 45 A peak pulse current - handles repetitive 1 ms transients in 24 V control systems per IEC 61000-4-4 |
Applications
| Industrial PLC I/O Protection | 24 V DC Power Supply Input |
|---|---|
Use Scenario: Protecting digital input modules in programmable logic controllers from field-wiring induced surges and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp transients before they reach optocoupler or MCU GPIO. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic interfaces while maintaining <5 µA leakage at 20.5 V operating voltage. | Use Scenario: Safeguarding the primary input stage of DIN-rail mounted 24 V switching power supplies against lightning-induced ring waves. IC Role / Device Role / Timing Role: Parallel-connected surge suppressor on AC-DC rectified bus or DC input terminals. Use Value: Limits transient voltage to 33.2 V during 1500 W pulses, preserving upstream bridge rectifier and downstream PWM controller reliability. |
| Medical Equipment Signal Lines | Automotive Body Control Module (BCM) |
Use Scenario: Shielding analog sensor inputs (e.g., temperature, pressure) in diagnostic imaging devices from ESD and EMI coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal traces between front-end amplifiers and ADC inputs. Use Value: Delivers Class 3 HBM ESD immunity (>16 kV) without distorting mV-level signals due to sub-µA leakage at rated VRWM. | Use Scenario: Protecting LIN bus or 12/24 V power domains in BCMs from load dump and jump-start transients. IC Role / Device Role / Timing Role: Clamp device on battery feed lines upstream of LDO regulators and microcontrollers. Use Value: Withstands 45 A IPP surges while maintaining 20.5 V VRWM compatibility with 24 V nominal vehicle systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Surface-mount SMB package; 24 V VRWM; 38.9 V VC @ 38.8 A; lower peak power (600 W) | Requires PCB redesign for SMT layout; better suited for space-constrained consumer electronics | Select when board area is limited and surge energy is ≤600 W |
| 1N6280AG | Same JEDEC device code; identical electrical specs and Case 41A package; legacy marking variant | No functional or mechanical difference; same UL 497B recognition and thermal profile | Direct form-fit-function replacement with identical sourcing and qualification history |
Compared with SMBJ24A and 1N6280AG, the 1.5KE24AG offers higher surge capacity (1500 W vs. 600 W) in through-hole format, enabling robust protection in industrial power entry designs where mechanical stability and thermal mass matter-while 1N6280AG provides identical performance with legacy part-number alignment.
Availability
1.5KE24AG is available at Aetrix Electronics and suitable for industrial PLC I/O protection, 24 V DC power supply input hardening, and medical equipment signal line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE24AG 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 manufacturer specializing in power management, analog, sensors, and discrete components for automotive, industrial, and cloud power applications.
The 1.5KE24AG belongs to the 1N6267A Series Mosorb TVS family-engineered specifically for high-energy transient suppression in harsh environments including factory automation, telecom infrastructure, and medical systems.
FAQ
What is the clamping voltage of the 1.5KE24AG under maximum surge conditions?
The 1.5KE24AG has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current of 45 A, measured using the standard 1 ms exponential waveform per Figure 5. This value ensures protected circuits remain below critical overvoltage thresholds during real-world transients like EFT or lightning-induced surges. The 1.5KE24AG maintains this performance across its specified operating temperature range.
Is the 1.5KE24AG RoHS compliant and halogen-free?
Yes, the 1.5KE24AG is Pb-free and RoHS compliant, as indicated by the "G" suffix in its part number and confirmed in ON Semiconductor's packaging documentation. The device uses Surmetic thermosetting plastic encapsulation and tin-plated leads, meeting J-STD-609 Category 1 for moisture sensitivity and IPC/JEDEC standards for lead-free assembly. The 1.5KE24AG contains no halogenated flame retardants per IEC 61249-2-21.
Can the 1.5KE24AG be used in bidirectional protection configurations?
No, the 1.5KE24AG is strictly unidirectional and must be installed with correct polarity-cathode toward the protected line, anode to ground. For bidirectional protection, ON Semiconductor offers the 1.5KE24A (non-G) or dedicated symmetric TVS arrays. Using the 1.5KE24AG in reverse bias beyond its 20.5 V VRWM risks premature conduction or degradation. Always verify polarity in schematic and layout for the 1.5KE24AG.
What is the thermal resistance and power derating behavior of the 1.5KE24AG?
The 1.5KE24AG has a junction-to-lead thermal resistance (RJL) of 20 °C/W. Its steady-state power dissipation is rated at 5.0 W up to 75°C lead temperature, derating linearly at 20 mW/°C above that point. For pulsed operation, peak power remains 1500 W only at TL ≤ 25°C and must be reduced per Figure 2. These thermal characteristics directly impact layout decisions-such as lead length and copper pour-for the 1.5KE24AG in high-reliability applications.
Does the 1.5KE24AG meet UL 497B certification for isolated loop protection?
Yes, the 1.5KE24AG is explicitly covered under UL 497B recognition (File #E210057, QVGQ2 category) for isolated loop circuit protection, as stated in the official ON Semiconductor datasheet. This certification validates performance in surge endurance, dielectric withstand, and strike voltage breakdown tests-making the 1.5KE24AG suitable for use in telecom line cards, industrial fieldbus interfaces, and other safety-critical isolation barriers.
1.5KE24AG 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45A
- 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
1.5KE24AG FAQ
1.How can I place an order for 1.5KE24AG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24AG 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 1.5KE24AG reliable?
The price and inventory of 1.5KE24AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24AG is usually 5 days.
3.What payment methods are accepted for 1.5KE24AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24AG?
1.5KE24AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24AG 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 1.5KE24AG?
For technical support, including 1.5KE24AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24AG requirements.
6.How does Aetrix verify that 1.5KE24AG is sourced from the original manufacturer or authorized distributors?
All 1.5KE24AG 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 1.5KE24AG meets industry standards.
7.What is the process for return or replacement of 1.5KE24AG?
All 1.5KE24AG units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24AG, 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 1.5KE24AG part is unused and in its original packaging.
Return procedure for 1.5KE24AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24AG Tags
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