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onsemi 1.5KE75AG
- Part No.:
- 1.5KE75AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1.5KE75AG.pdf
- Description:
- TVS DIODE 64.1VWM 103VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,948
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Product details
Overview
1.5KE75AG from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 75 V breakdown voltage (VBR = 71.3–78.8 V @ IT = 1 A), 103 V maximum clamping voltage (VC) at 14.6 A peak pulse current (IPP), and <1 ns response time - deployed in power supplies, industrial controls, and medical equipment input stages.
For engineers reviewing the 1.5KE75AG datasheet, pinout, applications, or equivalent options, key selection criteria include working peak reverse voltage (VRWM = 64.1 V), clamping ratio (VC/VBR ≈ 1.45), UL 497B recognition for isolated loop circuits, and axial leaded Surmetic CASE 41A packaging suitable for through-hole surge protection placement near connectors or AC/DC inputs.
Technical Context
This device operates as a Zener-based avalanche clamp: under normal bias it exhibits <5 µA leakage above 10 V, but triggers into low-impedance conduction when transient voltage exceeds VBR, limiting downstream voltage to ≤103 V at 14.6 A. Its thermal resistance (RJL = 20 °C/W) and 5.0 W steady-state dissipation (at TL = 75 °C) support reliable operation in thermally constrained PCB layouts with 3/8″ lead length.
The 1.5KE75AG complies with Class 3 ESD immunity (>16 kV HBM), meets UL 497B for isolated loop circuit protection, and uses Pb-free Surmetic plastic encapsulation with corrosion-resistant, solderable leads rated for 260 °C (10 s). Polarity is marked by cathode band; mounting position is unrestricted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 64.1 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system DC bus or signal rail rating. |
| VBR @ IT = 1 A | 71.3–78.8 V - Breakdown voltage tolerance defines design margin for overvoltage trip threshold. |
| VC @ IPP = 14.6 A | 103 V - Clamped voltage during 1 ms 1500 W surge; determines maximum stress on protected ICs. |
| IPP | 14.6 A - Peak pulse current capability at VC; used with series impedance to calculate survivable surge energy. |
| Response Time | <1 ns - Enables suppression of fast-rising transients (e.g., ESD, relay bounce) before damage occurs. |
| Leakage @ VRWM | <5 µA - Negligible standby power loss and signal distortion in high-impedance monitoring circuits. |
| UL Recognition | UL 497B - Certified for use in isolated loop telecom and industrial interface protection without additional agency review. |
Pinout & Package
1.5KE75AG uses an axial-leaded, bi-directional-capable (unidirectional variant) Surmetic plastic package (CASE 41A), with cathode identified by a colored band. Leads are tin-plated copper, 0.038–0.042″ diameter, rated for 260 °C soldering (10 s, 1/16″ from case).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point for reverse-biased clamping | Connected to ground or low-potential reference; completes current path during transient conduction. |
| Cathode | High-side connection point (marked with band) | Connected to protected line (e.g., DC input, signal trace); blocks normal operation, conducts during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Sustains single 1 ms surges up to 14.6 A without degradation - sufficient for IEC 61000-4-5 Level 4 (4 kV/2 Ω) testing. |
| UL 497B certification | Validated for telecom/data line isolation barriers - eliminates need for separate safety approval in certified end equipment. |
| ESD Class 3 (>16 kV HBM) | Withstands human-body-model discharges common in handling and field environments without parameter shift. |
| Pb-free Surmetic package | RoHS-compliant thermoset plastic with void-free molding - ensures long-term moisture resistance and solder joint reliability. |
| Clamping ratio ≤1.45 | VC/VBR = 103/71.3 ≈ 1.44 - tight ratio minimizes overvoltage margin required for downstream component selection. |
Applications
| AC/DC Power Input Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: 75 V-rated DC power rail exposed to load dump or inductive kickback in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp transients before they reach upstream rectifier or downstream DC-DC controller. Use Value: Limits voltage to ≤103 V during 14.6 A surges, protecting 100 V-rated electrolytic capacitors and MOSFET gate drivers from overstress. |
Use Scenario: 4–20 mA current loop input stage in programmable logic controllers subjected to cable ESD events. IC Role / Device Role / Timing Role: Clamp diode mounted directly at terminal block to shunt fast transients (<1 ns) before reaching precision op-amp front-end. Use Value: Sub-µA leakage preserves loop accuracy; UL 497B compliance ensures safety certification for hazardous-area signal conditioning modules. |
| Medical Equipment Mains Surge Suppression | Telecom Line Interface Protection |
Use Scenario: Secondary-side 75 V auxiliary supply in diagnostic imaging devices requiring IEC 60601-1 surge immunity. IC Role / Device Role / Timing Role: Primary-level TVS on isolated 75 V DC bus, coordinated with Y-capacitor and common-mode choke. Use Value: 1500 W rating handles combination wave surges (1.2/50 µs + 8/20 µs); low VC prevents latch-up in isolated ADC reference regulators. |
Use Scenario: Isolated Ethernet or RS-485 port on networked patient monitors connected to building infrastructure. IC Role / Device Role / Timing Role: UL 497B-recognized TVS on transformer-coupled data lines to meet ANSI/TIA-968-B telecom surge requirements. Use Value: Validated dielectric withstand and strike voltage performance eliminate need for external spark gaps or gas arrestors in certified designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Surface-mount SMB package (vs. axial leaded); lower 600 W PPK; VC = 121 V @ 5 A | Requires PCB rework for SMT layout; less robust for high-energy surges | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 3. |
| 1.5KE75A | Same electrical specs and package, but SnPb lead finish (non-Pb-free) | Not compliant with RoHS or China RoHS; restricted in new medical/industrial designs | Use only for legacy repair or non-regulated markets where Pb exemption applies. |
Compared with SMBJ75A and 1.5KE75A, the 1.5KE75AG delivers identical surge clamping performance in a RoHS-compliant axial package - making it optimal for through-hole power entry designs requiring UL 497B validation and full regulatory alignment without layout change.
Availability
1.5KE75AG is available at Aetrix Electronics and suitable for AC/DC power input protection, industrial PLC analog input protection, and medical equipment mains surge suppression requiring stable component supply, long-lifecycle assurance, and UL-recognized surge capability.
Supply support for 1.5KE75AG 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, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and medical applications.
The 1.5KE75AG belongs to the 1.5KE Series Mosorb TVS family - engineered for high-reliability, high-energy transient suppression in harsh industrial and safety-critical systems where UL recognition and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of the 1.5KE75AG under standard test conditions?
The 1.5KE75AG has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current of 14.6 A (1 ms exponential waveform per Figure 5). This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components remain within absolute maximum ratings.
Does the 1.5KE75AG meet UL safety standards for isolated circuit protection?
Yes, the 1.5KE75AG is UL Recognized under UL 497B (File #E210057) for isolated loop circuit protection. This certification covers dielectric withstand, strike voltage breakdown, endurance conditioning, and discharge testing - confirming suitability for telecom interfaces, industrial fieldbus ports, and medical signal isolation barriers without requiring additional safety agency evaluation.
What is the working peak reverse voltage (VRWM) specification for the 1.5KE75AG?
The 1.5KE75AG has a working peak reverse voltage (VRWM) of 64.1 V. This is the maximum continuous DC or peak AC voltage the device can block in normal operation without entering conduction. Designers select this rating to be ≥10–15% above the system's nominal operating voltage to ensure reliable blocking while maintaining adequate surge margin.
How does the 1.5KE75AG differ from the 1.5KE75A variant?
The 1.5KE75AG and 1.5KE75A share identical electrical specifications and CASE 41A axial package dimensions, but the "G" suffix denotes a Pb-free (RoHS-compliant) lead finish, whereas the 1.5KE75A uses SnPb solder plating. The 1.5KE75AG is required for new designs targeting EU RoHS, China RoHS, or medical certifications; the 1.5KE75A remains viable only for legacy repair or exempt applications.
What is the thermal resistance junction-to-lead (RJL) for the 1.5KE75AG?
The 1.5KE75AG has a thermal resistance of RJL = 20 °C/W, measured from junction to lead at 3/8″ lead length. This parameter enables calculation of junction temperature rise during repetitive surge events or elevated ambient conditions - essential for validating long-term reliability in enclosed power supplies or industrial enclosures where lead temperature may exceed 75 °C.
1.5KE75AG 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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
1.5KE75AG FAQ
1.How can I place an order for 1.5KE75AG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75AG 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 1.5KE75AG reliable?
The price and inventory of 1.5KE75AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE75AG is usually 5 days.
3.What payment methods are accepted for 1.5KE75AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75AG?
1.5KE75AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75AG 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 1.5KE75AG?
For technical support, including 1.5KE75AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75AG requirements.
6.How does Aetrix verify that 1.5KE75AG is sourced from the original manufacturer or authorized distributors?
All 1.5KE75AG 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 1.5KE75AG meets industry standards.
7.What is the process for return or replacement of 1.5KE75AG?
All 1.5KE75AG units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75AG, 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 1.5KE75AG part is unused and in its original packaging.
Return procedure for 1.5KE75AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75AG Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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Diodes Incorporated
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Nexperia USA Inc.
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Diodes Incorporated
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