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onsemi 1.5KE30A
- Part No.:
- 1.5KE30A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE30A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,498
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Product details
Overview
1.5KE30A 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 1.5KE30A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, axial lead package details, UL 497B certification status, real-world clamping performance data, and validated alternative parts for surge protection design-in.
Technical Context
The 1.5KE30A operates as a Zener-based avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its 25.6 V working peak reverse voltage (VRWM). Its low dynamic impedance ensures stable clamping under 1 ms 1500 W pulses, while thermal resistance (RJL = 20 °C/W) supports reliable power dissipation at lead temperatures ≤75 °C.
It complies with Class 3 ESD immunity (>16 kV HBM), meets UL 497B for isolated loop circuit protection, and exhibits <5 µA leakage above 10 V - enabling robust front-end protection without signal path loading in DC-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 25.6 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 mA | 28.5–31.5 V - Breakdown threshold range defining turn-on precision |
| VC @ IPP=36 A | 41.4 V - Maximum clamped voltage during 1 ms surge, limiting downstream stress |
| PPK | 1500 W - Peak pulse power handling per non-repetitive 1 ms waveform (Figure 5) |
| IR @ VRWM | <5 µA - Negligible leakage current preserving system efficiency in standby |
| Response Time | <1 ns - Enables suppression before transient energy couples into protected ICs |
| ESD Rating | Class 3 (>16 kV HBM) - Validated electrostatic discharge immunity per JEDEC JS-001 |
Pinout & Package
1.5KE30A 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″ from case body. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Surge return path | Connected to ground or low-impedance return plane during clamping event |
| Cathode | Reverse-biased clamping node / High-side protection point | Placed directly across protected line (e.g., +12 V rail to GND) to shunt overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse rating | Handles high-energy lightning-induced surges (IEC 61000-4-5 Level 4) without failure |
| UL 497B recognition | Validated for isolated loop telecom and industrial control protection per safety standard |
| Low zener impedance | Ensures consistent clamping voltage across production lots and temperature range |
| Pb-free axial package | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profiles |
| −65 °C to +175 °C operation | Supports deployment in under-hood automotive modules and industrial motor drives |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: AC/DC adapter input stage exposed to utility surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between L/N and earth ground to clamp common-mode spikes. Use Value: Limits input rail overshoot to ≤41.4 V, preventing damage to bridge rectifier and primary-side controller ICs. | Use Scenario: RS-485 transceiver bus lines connected to outdoor equipment or long cable runs. IC Role / Device Role / Timing Role: Parallel-connected clamping device on differential pair (A/B) referenced to local ground. Use Value: Absorbs induced lightning energy while maintaining signal integrity below 10 pF capacitance at VRWM. |
| Medical Equipment ESD Shielding | PLC Digital I/O Protection |
Use Scenario: Front-panel USB or serial ports on diagnostic imaging devices requiring >15 kV HBM immunity. IC Role / Device Role / Timing Role: Localized TVS on connector pins to divert ESD current before reaching USB PHY or UART controller. Use Value: Achieves Class 3 ESD rating without adding series impedance that degrades signal rise time. | Use Scenario: 24 V DC digital input module subjected to relay coil flyback and field wiring faults. IC Role / Device Role / Timing Role: Clamp diode across optocoupler input terminals to limit reverse voltage during inductive kick. Use Value: Prevents optocoupler LED breakdown by holding reverse voltage below 41.4 V during 36 A transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Lower peak power (600 W), SMC package (surface-mount), 43.5 V clamping at 13.7 A | Better suited for PCB space-constrained designs; not rated for 1500 W surges | Select SMBJ30A only if surge threat level is ≤Level 3 (IEC 61000-4-5) and layout allows SMT placement. |
| 1N6282AG | Same die, identical electrical specs, Pb-free axial package - JEDEC registered part number for 1.5KE30A | No functional difference; used interchangeably in BOMs per ON Semi documentation | 1N6282AG is a direct JEDEC-compliant marking variant; no redesign required. |
Compared with SMBJ30A, the 1.5KE30A delivers 2.5× higher surge energy handling in through-hole format; versus 1N6282AG, it is functionally identical but uses ON Semiconductor's proprietary part numbering - both share same UL 497B listing and thermal derating profile.
Availability
1.5KE30A is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure, medical diagnostics, and PLC I/O modules requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE30A 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 onsemi) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1.5KE30A belongs to the 1.5KE Series Mosorb TVS family - engineered specifically for high-reliability, high-power transient suppression in harsh environments where axial-leaded mechanical robustness and UL-certified safety are mandatory.
FAQ
What is the clamping voltage of the 1.5KE30A under maximum surge conditions?
The 1.5KE30A has a maximum clamping voltage (VC) of 41.4 V when subjected to its rated peak pulse current of 36 A (1 ms exponential waveform per Figure 5). This value is guaranteed across temperature and production lot, ensuring predictable overvoltage limiting for downstream components like regulators and microcontrollers in the 1.5KE30A-protected circuit.
Is the 1.5KE30A RoHS compliant and lead-free?
Yes, the 1.5KE30A is offered in a Pb-free axial package (marked with "G" suffix, e.g., 1.5KE30AG), fully compliant with RoHS Directive 2011/65/EU. The leads are tin-plated and qualified for standard soldering processes, including wave and hand-soldering at 260 °C for 10 seconds at 1/16″ from the case body - as specified in the official ON Semiconductor datasheet for the 1.5KE30A.
Does the 1.5KE30A meet UL safety standards?
Yes, the 1.5KE30A carries UL 497B recognition (File #E210057, QVGQ2 category) for isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown testing - confirming suitability for safety-critical telecom and industrial applications where regulatory compliance is mandatory for the 1.5KE30A.
How does the 1.5KE30A differ from bidirectional TVS diodes?
The 1.5KE30A is unidirectional and functions only during reverse voltage transients - it behaves as a low-leakage diode under normal forward bias and clamps only when reverse voltage exceeds VRWM. Unlike bidirectional types, it does not protect against positive-going transients on grounded lines, making it ideal for DC rail-to-ground protection where polarity is fixed - a key distinction in 1.5KE30A system integration.
What is the maximum operating temperature range for the 1.5KE30A?
The 1.5KE30A is rated for junction and storage temperatures from −65 °C to +175 °C. Its thermal resistance (RJL = 20 °C/W) and steady-state power derating curve (Figure 4) allow safe operation up to 75 °C ambient when mounted with 3/8″ lead length - enabling use in engine control units, industrial drives, and outdoor power electronics where the 1.5KE30A must sustain extreme thermal cycling.
1.5KE30A 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):
- 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
1.5KE30A FAQ
1.How can I place an order for 1.5KE30A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30A 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 1.5KE30A reliable?
The price and inventory of 1.5KE30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30A is usually 5 days.
3.What payment methods are accepted for 1.5KE30A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30A?
1.5KE30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30A 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 1.5KE30A?
For technical support, including 1.5KE30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30A requirements.
6.How does Aetrix verify that 1.5KE30A is sourced from the original manufacturer or authorized distributors?
All 1.5KE30A 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 1.5KE30A meets industry standards.
7.What is the process for return or replacement of 1.5KE30A?
All 1.5KE30A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30A, 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 1.5KE30A part is unused and in its original packaging.
Return procedure for 1.5KE30A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30A Tags
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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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DESD5V0U1BB-7
Diodes Incorporated
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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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