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onsemi ICTE-15RL4
- Part No.:
- ICTE-15RL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
ICTE-15RL4.pdf
- Description:
- TVS DIODE 15VWM 25VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,360
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Product details
Overview
ICTE-15RL4 from ON Semiconductor is a unidirectional 1500 W peak power transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning surges, and inductive switching transients. It features a 15 V working peak reverse voltage (VRWM), 25 A peak pulse current (IPP), 20.1 V clamping voltage at 1 A, and sub-nanosecond response time - deployed in industrial power supplies and communication interface circuits.
For engineers reviewing the ICTE-15RL4 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, surge current capability under 1 ms pulse conditions, thermal derating above 75°C lead temperature, and axial-leaded Surmetic™ package compatibility with through-hole PCB layouts.
Technical Context
This device operates as a Zener-based avalanche clamp, triggered when reverse voltage exceeds its 17.6 V minimum breakdown voltage (VBR @ IT = 1 mA). Its low dynamic impedance ensures stable clamping across 1–10 A pulse currents, with thermal resistance of 20 °C/W enabling reliable power dissipation up to 5.0 W at 75°C lead temperature.
Designed for unidirectional protection only, ICTE-15RL4 exhibits <5 µA leakage above 10 V and an ESD rating >16 kV per Human Body Model. It is not rated for bidirectional operation - that function requires the ICTE-xxC series variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; must exceed circuit's DC/peak operating voltage. |
| VBR (min) | 17.6 V @ 1 mA - Minimum breakdown threshold; defines lower bound of clamping onset under standardized test conditions. |
| VC @ IPP=1 A | 20.1 V - Clamped voltage seen by protected circuit during 1 A transient; determines voltage stress on downstream components. |
| PPK | 1500 W @ 1 ms - Peak surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 4 (4 kV/2 Ω) testing. |
| Response Time | <1 ns - Enables suppression before fast-rising transients (e.g., ESD) damage CMOS/MOS inputs. |
| Leakage Current | <2.0 µA @ VRWM - Negligible standby power loss and signal integrity impact in high-impedance bias networks. |
| ESD Rating | >16 kV HBM - Meets IEC 61000-4-2 Level 4 immunity requirements without external pre-filtering. |
Pinout & Package
ICTE-15RL4 uses the axial-leaded Surmetic™ plastic case 41A package (JEDEC TO-204-AA equivalent), with cathode identified by a polarity band. Leads are tin-plated copper, solderable at 230°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or low-impedance return path; forms clamping loop with cathode. |
| Cathode | Protected-line terminal | Connected to line being protected (e.g., RS-485 bus, DC input rail); conducts surge current to ground when VRWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports robust protection against 10/1000 µs lightning surges per IEC 61000-4-5 up to 4 kV open-circuit voltage. |
| Clamping ratio VC/VBR = 1.14 | Indicates tight voltage control - only 14% overvoltage above breakdown, minimizing stress on protected ICs. |
| Surmetic™ void-free molded package | Ensures mechanical reliability and moisture resistance in industrial environments (IPC/JEDEC J-STD-020 compliant). |
| Low zener impedance | Maintains consistent clamping performance across varying surge amplitudes and temperatures without thermal runaway. |
| Tape-and-reel packaging (RL4) | Enables automated SMT-compatible placement despite axial form factor - optimized for high-volume production lines. |
Applications
| Industrial Power Supply Input Protection | RS-485/RS-422 Data Line Clamp |
|---|---|
Use Scenario: 24 V DC input stage of PLC power module exposed to load dump and field wiring surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between +24 V rail and chassis ground to clamp transients before they reach upstream DC-DC controller. Use Value: Limits voltage excursion to ≤20.6 V at 10 A surge, preventing latch-up or gate oxide rupture in synchronous buck controllers. | Use Scenario: Differential data lines in factory-floor automation network subject to ground potential differences and ESD events. IC Role / Device Role / Timing Role: Cathode tied to A/B bus lines, anode to local ground - clamps common-mode surges while preserving differential signaling integrity. Use Value: Sub-ns response prevents data corruption during 8 kV contact discharge; low capacitance (<100 pF) avoids signal edge degradation at 10 Mbps. |
| Medical Equipment AC/DC Adapter Interface | Programmable Logic Controller (PLC) Digital I/O Protection |
Use Scenario: Secondary-side DC output of medical-grade AC/DC adapter connected to patient-monitoring analog front-end. IC Role / Device Role / Timing Role: Standoff protection device installed at adapter output connector to absorb coupling transients from nearby MRI or RF equipment. Use Value: 16 kV HBM rating meets IEC 60601-1-2 ESD immunity; low leakage preserves microamp-level sensor bias accuracy. | Use Scenario: 24 V digital input channel of modular PLC receiving signals from limit switches and proximity sensors in harsh manufacturing environments. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input line to shunt induced surges from relay coil back-EMF or motor drive noise. Use Value: 1500 W rating sustains repeated 1 ms transients without degradation; axial package allows manual replacement in field-serviceable modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Surface-mount SMB package; 600 W PPK; same VRWM and VC @ 1 A (21.2 V) | Requires PCB redesign for SMT layout; lower surge rating limits use in high-energy industrial environments | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 Level 3. |
| P6KE15A | Axial DO-15 package; 600 W PPK; higher VC @ 1 A (23.5 V); same VRWM | Same mounting method but reduced clamping performance and surge margin; legacy design support only | Select only for cost-sensitive replacements where 1500 W headroom is not required and existing DO-15 footprint must be retained. |
Compared with SMBJ15A and P6KE15A, ICTE-15RL4 delivers 2.5× higher peak power handling and tighter clamping (20.1 V vs. ≥21.2 V), making it preferred for mission-critical industrial interfaces where transient energy exceeds 100 mJ and PCB layout permits axial leaded components.
Availability
ICTE-15RL4 is available at Aetrix Electronics and suitable for industrial power supply input protection, RS-485/RS-422 data line clamping, and programmable logic controller (PLC) digital I/O protection requiring stable component supply and long-term obsolescence management.
Supply support for ICTE-15RL4 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 energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The ICTE series belongs to ON Semiconductor's Mosorb™ transient voltage suppressor product line, engineered specifically for high-reliability unidirectional surge protection in industrial control, medical, and communications infrastructure where axial-leaded robustness and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of ICTE-15RL4 at 10 A surge current?
The clamping voltage of ICTE-15RL4 at 10 A peak pulse current (IPP) is 20.6 V, measured under standard 1 ms pulse conditions. This value ensures protected circuits remain below critical voltage thresholds during high-energy transients. ICTE-15RL4 maintains this performance due to its low dynamic impedance and thermally stable Zener structure - essential for safeguarding 3.3 V or 5 V logic interfaces coupled to 24 V industrial buses.
Is ICTE-15RL4 suitable for bidirectional signal line protection?
No, ICTE-15RL4 is strictly unidirectional and must not be used on bidirectional lines such as USB or CAN without additional circuitry. Its design clamps only reverse-voltage transients from cathode to anode. For bidirectional protection, ON Semiconductor specifies the ICTE-15C variant - which uses a symmetrical dual-Zener configuration. Using ICTE-15RL4 in place of ICTE-15C risks forward conduction damage during positive-going transients on AC-coupled lines.
What is the maximum steady-state power dissipation for ICTE-15RL4 at 75°C lead temperature?
ICTE-15RL4 has a steady-state power dissipation (PD) rating of 5.0 W at a lead temperature (TL) of 75°C, with linear derating of 20 mW/°C above that point. This thermal specification assumes 3/8″ lead length and defines safe continuous power handling in ambient-constrained enclosures. Engineers must verify actual lead temperature via thermal modeling or measurement, as exceeding 175°C junction temperature will cause permanent degradation of ICTE-15RL4's clamping characteristics.
Does ICTE-15RL4 meet IEC 61000-4-2 and IEC 61000-4-5 compliance requirements?
Yes, ICTE-15RL4 meets IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) due to its >16 kV HBM ESD rating, and supports IEC 61000-4-5 Level 4 (4 kV line-to-ground, 2 Ω source impedance) through its 1500 W peak pulse rating at 1 ms. However, full system-level compliance requires proper PCB layout - including short traces, ground plane coupling, and series impedance - as ICTE-15RL4 alone cannot guarantee pass/fail without correct implementation per IEC 61000-4-5 Annex D.
What does the 'RL4' suffix indicate in ICTE-15RL4?
The 'RL4' suffix in ICTE-15RL4 denotes tape-and-reel packaging containing 1500 units per reel, optimized for automated pick-and-place assembly. Unlike the base ICTE-15 variant (500 units/box), ICTE-15RL4 enables high-throughput manufacturing while maintaining identical electrical and thermal specifications. The RL4 format uses industry-standard 24 mm carrier tape with embossed pockets and cover tape, compatible with most SMT feeders despite the axial leaded form factor.
ICTE-15RL4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 17.6V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 60A (8/20µs)
- 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
ICTE-15RL4 FAQ
1.How can I place an order for ICTE-15RL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for ICTE-15RL4 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 ICTE-15RL4 reliable?
The price and inventory of ICTE-15RL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICTE-15RL4 is usually 5 days.
3.What payment methods are accepted for ICTE-15RL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICTE-15RL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICTE-15RL4?
ICTE-15RL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICTE-15RL4 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 ICTE-15RL4?
For technical support, including ICTE-15RL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICTE-15RL4 requirements.
6.How does Aetrix verify that ICTE-15RL4 is sourced from the original manufacturer or authorized distributors?
All ICTE-15RL4 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 ICTE-15RL4 meets industry standards.
7.What is the process for return or replacement of ICTE-15RL4?
All ICTE-15RL4 units undergo pre-shipment inspection (PSI). If there is an issue with ICTE-15RL4, 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 ICTE-15RL4 part is unused and in its original packaging.
Return procedure for ICTE-15RL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICTE-15RL4 Tags
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onsemi
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DESD3V3E1BL-7B
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Diodes Incorporated
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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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