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onsemi 1.5KE30AG
- Part No.:
- 1.5KE30AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE30AG.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,661
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Product details
Overview
1.5KE30AG 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 30 V breakdown voltage (VBR = 28.5–31.5 V @ 1 mA), 41.4 V maximum clamping voltage (VC) at 36 A peak pulse current, and <1 ns response time - deployed in power supply input stages, industrial I/O interfaces, and telecom line cards.
For engineers reviewing the 1.5KE30AG datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (25.6 V), clamping performance under 1 ms 1500 W surge, UL 497B certification for isolated loop protection, and axial lead (Case 41A) mechanical compatibility with through-hole PCB layouts.
Technical Context
The 1.5KE30AG operates as a Zener-based avalanche diode, entering conduction when reverse voltage exceeds its specified VBR range. Its low dynamic impedance ensures stable clamping during fast transients, while thermal resistance (RJL = 20 °C/W) supports reliable power dissipation in lead-temperature-limited environments.
It complies with Class 3 ESD immunity (>16 kV HBM), meets UL 497B for isolated loop circuit protection, and is rated for non-repetitive 1500 W pulses per Figure 5 waveform (tP = 1 ms, tr ≤ 10 µs). The device is not intended for continuous forward conduction but optimized for transient energy absorption only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy surges without failure |
| Working Peak Reverse Voltage (VRWM) | 25.6 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Breakdown Voltage (VBR) | 28.5–31.5 V @ 1 mA - precise Zener threshold defining turn-on tolerance |
| Clamping Voltage (VC) | 41.4 V @ 36 A - maximum voltage seen by protected circuit during full-rated surge |
| Leakage Current (IR) | <5 µA @ 25.6 V - negligible standby power loss and signal interference |
| Response Time | <1 ns - enables protection of high-speed digital and analog circuits |
| ESD Rating | Class 3 (>16 kV HBM) - exceeds IEC 61000-4-2 Level 4 requirements |
Pinout & Package
1.5KE30AG uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are tin-plated, solderable at 260°C for 10 seconds at 1/16″ from case body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to system ground or low-impedance reference plane during clamping |
| Cathode | Protected line connection point | Connected to the line being protected (e.g., +VIN, signal line); polarity band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection - enables use in telecom and industrial safety-critical interfaces without additional certification burden |
| Low Clamping Ratio (VC/VBR) | 1.45 (41.4 V / 28.5 V) - minimizes overvoltage stress on downstream ICs during surge events |
| Pb-Free Construction | RoHS-compliant materials and finish - supports environmental compliance without derating or reliability penalty |
| High Surge Current Capacity | 36 A peak pulse current - handles repeated 1500 W transients in industrial motor drive I/O or AC line inputs |
Applications
| Industrial PLC I/O Protection | AC/DC Power Supply Input Stage |
|---|---|
Use Scenario: Protecting 24 V DC digital input modules in programmable logic controllers from field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input line and chassis ground, clamping transients before they reach optocoupler or microcontroller input pins. Use Value: Prevents latch-up or permanent damage to input conditioning circuitry during 1 kV/500 A surge tests per IEC 61000-4-5. | Use Scenario: Safeguarding bridge rectifier outputs and bulk capacitor charging paths in offline switch-mode power supplies. IC Role / Device Role / Timing Role: Parallel-connected TVS across primary-side DC bus to absorb inductive kickback from relay coils or transformer leakage energy. Use Value: Limits voltage overshoot to ≤41.4 V, ensuring MOSFETs and controller ICs remain within absolute maximum ratings during cold-start or fault conditions. |
| Telecom Line Interface | Medical Equipment Signal Lines |
Use Scenario: Shielding RS-485 transceivers and isolation barriers in building automation gateways connected to long outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; 1.5KE30AG used on positive rail only where unidirectional clamping suffices and polarity is fixed. Use Value: UL 497B recognition confirms suitability for telecom loop-powered systems requiring certified surge suppression. | Use Scenario: Guarding analog sensor inputs (e.g., temperature, pressure) in diagnostic imaging equipment from ESD events during probe handling or cable disconnects. IC Role / Device Role / Timing Role: Low-leakage (<5 µA) TVS placed directly at connector entry point to avoid signal distortion in mV-level biomedical signals. Use Value: Sub-1 ns response preserves integrity of fast-rising physiological waveforms while preventing CMOS front-end damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Surface-mount SMB package (vs. axial lead); same VRWM (25.6 V), slightly higher VC (48.4 V @ 31.8 A) | Requires PCB rework for SMT layout; better suited for space-constrained consumer electronics | Select when board real estate is limited and automated assembly is preferred |
| 1N6282AG | Same JEDEC device code, identical electrical specs and package - direct manufacturer-equivalent marking variant | No functional or mechanical difference; used interchangeably in BOMs per ON Semi documentation | Choose for legacy design continuity or distributor stock alignment |
Compared with SMBJ30A and 1N6282AG, the 1.5KE30AG offers proven axial-lead robustness for high-vibration industrial environments, lower clamping voltage than SMBJ30A, and identical performance to 1N6282AG - making it optimal for through-hole production and high-reliability power interface designs.
Availability
1.5KE30AG is available at Aetrix Electronics and suitable for industrial PLC I/O protection, AC/DC power supply input stage hardening, and medical equipment signal line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE30AG 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 (now part of onsemi) is a global semiconductor supplier specializing in power management, analog, sensors, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KE30AG belongs to the 1.5KE series of Mosorb™ transient voltage suppressors - engineered specifically for high-energy surge immunity in harsh industrial and telecom infrastructure environments.
FAQ
What is the maximum clamping voltage of the 1.5KE30AG under full-rated surge conditions?
The 1.5KE30AG exhibits a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current of 36 A, measured per the 1 ms exponential waveform defined in Figure 5 of the ON Semiconductor datasheet. This value ensures downstream components see no more than 41.4 V during worst-case transient events, critical for protecting 3.3 V or 5 V logic interfaces.
Is the 1.5KE30AG RoHS compliant and lead-free?
Yes, the 1.5KE30AG carries the "G" suffix indicating a Pb-free package per ON Semiconductor's specification. It meets RoHS Directive 2011/65/EU requirements, with lead-free terminations and halogen-free molding compound - verified in the "Mechanical Characteristics" and ordering information sections of the official datasheet.
Does the 1.5KE30AG have UL recognition, and for what standard?
Yes, the 1.5KE30AG is UL Recognized under file E210057 for standard UL 497B, specifically covering protectors in isolated loop circuits. This certification applies across the full 1.5KE6.8A–1.5KE250A series and validates performance in surge endurance, dielectric withstand, and discharge testing - essential for telecom and industrial safety approvals.
What is the working peak reverse voltage (VRWM) of the 1.5KE30AG, and why does it matter?
The 1.5KE30AG has a working peak reverse voltage (VRWM) of 25.6 V. This parameter defines the maximum continuous DC or peak AC voltage the device can block without entering breakdown - selecting a VRWM ≥ operating voltage prevents false triggering while ensuring margin for ripple and tolerance. For a nominal 24 V system, 25.6 V provides appropriate headroom.
Can the 1.5KE30AG be used in bidirectional protection configurations?
No - the 1.5KE30AG is a unidirectional TVS diode, designed only for clamping positive transients relative to ground. For bidirectional protection (e.g., AC lines or differential data buses), a dedicated bidirectional device such as 1.5KE30CA or SMAJ30A must be used. Using two 1.5KE30AG devices in series opposition is not recommended due to mismatched VBR and lack of characterization.
1.5KE30AG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36A
- 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
1.5KE30AG FAQ
1.How can I place an order for 1.5KE30AG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30AG 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 1.5KE30AG reliable?
The price and inventory of 1.5KE30AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30AG is usually 5 days.
3.What payment methods are accepted for 1.5KE30AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30AG?
1.5KE30AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30AG 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 1.5KE30AG?
For technical support, including 1.5KE30AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30AG requirements.
6.How does Aetrix verify that 1.5KE30AG is sourced from the original manufacturer or authorized distributors?
All 1.5KE30AG 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 1.5KE30AG meets industry standards.
7.What is the process for return or replacement of 1.5KE30AG?
All 1.5KE30AG units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30AG, 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 1.5KE30AG part is unused and in its original packaging.
Return procedure for 1.5KE30AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30AG Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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