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onsemi 1.5KE36ARL4
- Part No.:
- 1.5KE36ARL4
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE36ARL4.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,535
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Product details
Overview
1.5KE36ARL4 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 30.8 V working peak reverse voltage (VRWM), 36 V nominal breakdown voltage (VBR), 49.9 V maximum clamping voltage (VC) at 30 A peak pulse current (IPP), and sub-1 ns response time - deployed in power supply input stages, industrial I/O interfaces, and telecom line cards.
For engineers reviewing the 1.5KE36ARL4 datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM margin over operating DC bus, clamping voltage headroom relative to protected IC's absolute maximum rating, surge current capability per IEC 61000-4-5 Level 4, and UL 497B recognition for isolated loop circuit protection.
Technical Context
This TVS operates as a voltage-clamped shunt device: under normal bias (≤ VRWM = 30.8 V), it exhibits <5 µA leakage; when transient voltage exceeds VBR (34.2–37.8 V @ IT = 1 mA), it avalanches into low-impedance conduction, limiting voltage across the load to ≤49.9 V at IPP = 30 A. Its Surmetic axial-leaded plastic package (Case 41A) ensures mechanical robustness and solderability at 260°C for 10 s.
The device complies with UL 497B for isolated loop circuit protection and meets Class 3 HBM ESD immunity (>16 kV). Its thermal resistance (RJL = 20 °C/W) and steady-state power derating (5.0 W @ TL ≤ 75°C) support reliable operation in ambient temperatures from −65 °C to +175 °C without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 30.8 V - Maximum continuous reverse operating voltage before significant leakage; sets minimum system DC bus margin. |
| VBR (min/typ/max) | 34.2 / 36 / 37.8 V @ 1 mA - Breakdown threshold defining turn-on onset; used to verify clamping headroom vs. IC abs max. |
| VC @ IPP | 49.9 V @ 30 A - Clamped voltage during 1 ms 8.3 ms half-sine surge; determines worst-case stress on downstream components. |
| PPK | 1500 W @ TL ≤ 25°C - Peak single-pulse power handling; defines survivability against IEC 61000-4-5 combination wave surges. |
| Response Time | <1 ns - Avalanche initiation delay; enables protection of high-speed logic and analog front-ends before damage occurs. |
| Leakage Current | <5 µA @ VRWM - Minimal standby power loss and signal integrity impact in always-on circuits. |
| UL Recognition | UL 497B QVGQ2 File #E210057 - Certified for use in isolated communication loops, including RS-485 and PoE interfaces. |
Pinout & Package
1.5KE36ARL4 uses an axial-leaded Surmetic plastic package (Case 41A), with cathode identified by a polarity band. Leads are tin-plated copper, rated for 260°C soldering at 1/16″ from case for 10 seconds. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink node | Connected to ground or low-impedance return path; carries full surge current during clamping. |
| Cathode | Protected line connection | Connected to the line being protected (e.g., +12 V rail); voltage referenced to anode during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV/2 kA) surge immunity without derating in standard PCB layouts. |
| Clamping ratio VC/VBR ≈ 1.39 | Provides tight voltage control - critical for protecting 3.3 V or 5 V logic rails with limited overvoltage tolerance. |
| ESD rating >16 kV HBM | Eliminates need for additional ESD diodes in handheld or field-serviceable equipment interfaces. |
| Pb-free axial lead (RL4 suffix) | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profiles without lead-free solder compatibility concerns. |
| UL 497B certified | Validates suitability for safety-critical isolated data lines (e.g., medical sensor interfaces, industrial Ethernet) without additional certification effort. |
Applications
| Industrial Power Supply Input | RS-485 Communication Line |
|---|---|
Use Scenario: AC/DC or DC/DC converter input stage exposed to 4 kV lightning-induced surges per IEC 61000-4-5. IC Role / Device Role: Shunt clamping element placed between DC bus (+Vin) and chassis ground. Use Value: Limits transient voltage to ≤49.9 V, preventing damage to upstream rectifiers, bulk capacitors, and primary-side controllers. | Use Scenario: Two-wire differential bus in factory automation PLCs subject to cable discharge events and ground potential differences. IC Role / Device Role: Unidirectional TVS connected from A/B lines to local signal ground, referenced to isolated power domain. Use Value: UL 497B certification ensures compliance for isolated loop protection, while 30.8 V VRWM avoids false triggering during common-mode noise. |
| Medical Equipment Sensor Interface | Automotive Body Control Module (BCM) Inputs |
Use Scenario: Analog front-end of patient monitoring device connected to external transducers via long cables susceptible to ESD. IC Role / Device Role: Low-leakage (≤5 µA) clamping diode on each signal line (e.g., ECG lead inputs) referenced to isolated analog ground. Use Value: >16 kV HBM ESD rating protects precision amplifiers and ADCs without degrading baseline offset or CMRR. | Use Scenario: 12 V switch sense inputs in BCM exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role: Primary overvoltage clamp on switched 12 V inputs, placed before protection FETs or level translators. Use Value: 1500 W PPK withstands 120 V/100 ms load dump pulses without degradation, preserving long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Surface-mount SMB package; lower PPK (600 W); same VRWM (30.8 V) and VC (58.1 V @ 10.3 A). | Used where board space is constrained and surge levels are ≤IEC 61000-4-5 Level 2. | Select 1.5KE36ARL4 for higher-energy surges requiring axial-leaded robustness and UL 497B certification. |
| 1N6284AG | Same die, identical electrical specs, but in Pb-free axial lead (AG) packaging with box shipping (500 units), not tape & reel. | No functional difference; differs only in packaging format and reel orientation. | Choose 1.5KE36ARL4 for automated SMT placement compatibility and volume tape-and-reel delivery. |
Compared with SMBJ36A, 1.5KE36ARL4 delivers 2.5× higher surge energy handling and UL 497B qualification for isolated systems; compared with 1N6284AG, it offers identical protection performance with optimized logistics for high-volume production lines using pick-and-place feeders.
Availability
1.5KE36ARL4 is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 networks, medical sensor interfaces, and automotive body control modules requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE36ARL4 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, sensor, and discrete devices for automotive, industrial, and cloud power applications.
The 1.5KE Series was engineered for high-reliability transient suppression in harsh environments - targeting applications demanding UL recognition, high surge robustness, and long-term stability in axial-leaded form factors.
FAQ
What is the clamping voltage of the 1.5KE36ARL4 under a 30 A transient pulse?
The 1.5KE36ARL4 has a maximum clamping voltage (VC) of 49.9 V when subjected to a 30 A peak pulse current (IPP), measured per the 1 ms exponential waveform defined in Figure 5 of the ON Semiconductor datasheet. This value ensures predictable overvoltage limiting for downstream components such as DC/DC controllers or interface transceivers, and is confirmed across production lots with no derating required at TL ≤ 25°C. The 1.5KE36ARL4 maintains this clamping performance within its specified temperature range of −65 °C to +175 °C.
Does the 1.5KE36ARL4 meet UL 497B requirements for isolated loop protection?
Yes, the 1.5KE36ARL4 is UL recognized under standard UL 497B (File #E210057, category QVGQ2) for isolated loop circuit protection - covering test requirements including strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge performance. This certification applies specifically to the 1.5KE6.8A through 1.5KE250A family, and the 1.5KE36ARL4 is explicitly included. The 1.5KE36ARL4's validation supports its use in medical sensor interfaces and industrial RS-485 networks without additional third-party testing.
What is the working peak reverse voltage (VRWM) specification for the 1.5KE36ARL4?
The 1.5KE36ARL4 has a working peak reverse voltage (VRWM) of 30.8 V, meaning it remains in high-impedance blocking mode with <5 µA leakage current up to this DC or continuous peak voltage. This parameter is critical for selecting appropriate margin above system operating voltage - for example, it supports direct use on nominal 24 V DC buses where peak transients remain below 30.8 V during normal operation. The 1.5KE36ARL4's VRWM is verified per JEDEC test conditions and appears in Table 3 of the official ON Semiconductor datasheet.
How does the 1.5KE36ARL4 differ from the 1N6284AG variant?
The 1.5KE36ARL4 and 1N6284AG share identical electrical specifications, silicon die, and thermal characteristics - both are rated for VRWM = 30.8 V, VBR = 36 V, and VC = 49.9 V @ 30 A. Their sole difference lies in packaging and logistics: the 1.5KE36ARL4 is supplied in 1500-unit tape-and-reel format optimized for automated assembly, while the 1N6284AG ships in 500-unit boxes. The "RL4" suffix denotes Pb-free axial leads compatible with RoHS-compliant reflow profiles, matching the "G" suffix of 1N6284AG. Therefore, the 1.5KE36ARL4 is functionally interchangeable with 1N6284AG in all circuit designs.
Is the 1.5KE36ARL4 suitable for protecting 3.3 V logic interfaces?
No - the 1.5KE36ARL4 is not suitable for protecting 3.3 V logic interfaces due to its 30.8 V VRWM and 49.9 V clamping voltage, which far exceed the absolute maximum ratings of 3.3 V ICs. It is intended for higher-voltage domains such as 12 V, 24 V, or 48 V power rails and communication lines. For 3.3 V logic, lower-voltage TVS devices like SMAJ3.3A (VRWM = 2.8 V, VC = 7.5 V @ 5.5 A) should be selected instead. The 1.5KE36ARL4's design parameters make it appropriate for industrial power inputs and RS-485 bus protection, not low-voltage digital signaling.
1.5KE36ARL4 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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
1.5KE36ARL4 FAQ
1.How can I place an order for 1.5KE36ARL4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36ARL4 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 1.5KE36ARL4 reliable?
The price and inventory of 1.5KE36ARL4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36ARL4 is usually 5 days.
3.What payment methods are accepted for 1.5KE36ARL4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36ARL4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36ARL4?
1.5KE36ARL4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36ARL4 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 1.5KE36ARL4?
For technical support, including 1.5KE36ARL4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36ARL4 requirements.
6.How does Aetrix verify that 1.5KE36ARL4 is sourced from the original manufacturer or authorized distributors?
All 1.5KE36ARL4 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 1.5KE36ARL4 meets industry standards.
7.What is the process for return or replacement of 1.5KE36ARL4?
All 1.5KE36ARL4 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36ARL4, 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 1.5KE36ARL4 part is unused and in its original packaging.
Return procedure for 1.5KE36ARL4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36ARL4 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
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D5V0L1B2WS-7
Diodes Incorporated
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