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onsemi 1.5KE82A
- Part No.:
- 1.5KE82A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE82A.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE,
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
1.5KE82A 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 working peak reverse voltage of 70.1 V, breakdown voltage of 77.9–86.1 V at 1 mA test current, clamping voltage of 113 V at 13.3 A peak pulse current, and sub-1 ns response time. It is used in industrial power supplies, medical equipment, and communication interfaces requiring robust overvoltage immunity.
For engineers reviewing the 1.5KE82A datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ 70.1 V, VC ≤ 113 V at IPP = 13.3 A, low zener impedance, UL 497B recognition for isolated loop circuits, and axial leaded Surmetic package compatibility with through-hole PCB assembly.
Technical Context
The 1.5KE82A operates as a silicon avalanche diode with precise Zener-like breakdown behavior under transient overvoltage conditions. Its unidirectional polarity enables DC-biased line protection where reverse conduction must be blocked until clamping threshold is exceeded.
It delivers 1500 W nonrepetitive peak pulse power per 1 ms waveform (Figure 5), with thermal resistance of 20 °C/W junction-to-lead and steady-state power dissipation derated above 50 °C ambient. Clamping performance is validated per IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) stress profiles when properly mounted with minimal lead inductance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 70.1 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/typ/max) | 77.9 / 82 / 86.1 V @ 1 mA - precise breakdown threshold ensures predictable turn-on |
| VC @ IPP | 113 V @ 13.3 A - clamping voltage limits protected circuit stress during surge events |
| PPK | 1500 W @ 1 ms - high-energy surge handling capability for lightning and inductive load transients |
| Response Time | < 1 ns - fast avalanche initiation minimizes voltage overshoot before clamping engages |
| IR @ VRWM | 5 µA max - low leakage preserves signal integrity and system efficiency in standby |
| UL Recognition | UL 497B (QVGQ2) - certified for isolated loop circuit protection in safety-critical systems |
Pinout & Package
1.5KE82A uses an axial-leaded Surmetic plastic package (Case 41A), with cathode indicated by a polarity band. Leads are tin-plated copper, solderable at 260 °C for 10 seconds at 1/16 inch from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line; conducts only when reverse voltage exceeds VBR, shunting surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without cascading devices |
| Clamping ratio VC/VBR ≈ 1.38 | Low ratio ensures tight voltage control-critical for safeguarding 75 V-rated ICs and MOSFETs |
| ESD rating >16 kV HBM | Meets or exceeds Class 3 ESD immunity requirements for end-equipment compliance |
| Pb-free axial package (G suffix) | Complies with RoHS Directive 2011/65/EU and supports lead-free reflow and hand-soldering processes |
| Thermal resistance RJL = 20 °C/W | Supports reliable heat transfer to PCB copper pour or chassis mount for repeated surge duty cycles |
Applications
| Industrial Power Supply Input Protection | Medical Equipment ESD Shielding |
|---|---|
Use Scenario: AC/DC front-end rectifier output or DC bus lines exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed across +VOUT and GND to limit transient excursions below 113 V. Use Value: Prevents damage to downstream DC-DC controllers and optocouplers rated for ≤100 V absolute maximum ratings. | Use Scenario: Patient-connected sensor interface lines (e.g., ECG leads, SpO₂ cables) subject to human-body ESD discharge. IC Role / Device Role / Timing Role: Primary overvoltage clamp on analog front-end inputs, referenced to isolated patient-ground plane. Use Value: UL 497B certification validates safe operation in isolated loop circuits, meeting IEC 60601-1 creepage/clearance and fault-current limits. |
| Telecom Line Interface Protection | PLC Analog I/O Module Protection |
Use Scenario: RS-485 or Ethernet PHY data lines connected to outdoor cabling susceptible to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; 1.5KE82A used on DC bias rails (e.g., VCC isolation supply) feeding transceivers. Use Value: Sub-1 ns response prevents latch-up in RS-485 drivers during fast-rising common-mode transients. | Use Scenario: 4–20 mA current loop transmitter outputs exposed to field wiring faults and motor drive coupling noise. IC Role / Device Role / Timing Role: Clamp placed across loop supply terminals (e.g., +24 V and return) to protect DAC output stages and current sense amplifiers. Use Value: 13.3 A IPP rating handles repetitive 10/1000 µs surges up to 1500 W without degradation, ensuring long-term reliability in factory automation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ80A | Surface-mount SMB package; lower PPK = 600 W; VRWM = 80 V; VC = 125 V @ 4.8 A | Designed for space-constrained PCBs; unsuitable for 1500 W surge events without parallel staging | Select when board area is limited and surge energy is ≤600 W; verify layout thermal relief for SMB footprint |
| 1N6293A | Same axial package and 1500 W rating; VRWM = 77.8 V; VBR = 86.5–95.5 V; VC = 125 V @ 12 A | Higher clamping voltage reduces margin for 82 V-rated components; identical mounting and thermal behavior | Use when higher VRWM is acceptable and tighter VBR tolerance is not required; same lead-forming and soldering process |
Compared with SMBJ80A and 1N6293A, the 1.5KE82A offers optimal balance of 70.1 V VRWM, 113 V clamping, and 1500 W surge capacity in a proven axial through-hole package-making it preferred for high-reliability industrial and medical power rail protection where layout inductance and thermal mass are design priorities.
Availability
1.5KE82A is available at Aetrix Electronics and suitable for industrial power supplies, medical diagnostic equipment, telecom infrastructure, and programmable logic controller (PLC) modules requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE82A 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, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1.5KE82A belongs to the 1N6267A Series Mosorb TVS family, engineered specifically for high-power, axial-leaded transient suppression in harsh electromagnetic environments where reliability and UL-certified safety are mandatory.
FAQ
What is the clamping voltage of the 1.5KE82A and how is it measured?
The 1.5KE82A has a maximum clamping voltage (VC) of 113 V, measured at a peak pulse current (IPP) of 13.3 A using a 1 ms exponential waveform per Figure 5 in the datasheet. This value represents the upper voltage limit imposed on protected circuitry during a transient event and is critical for ensuring downstream components remain within their absolute maximum ratings. The 1.5KE82A achieves this clamping performance while maintaining low dynamic impedance and sub-1 ns response.
Is the 1.5KE82A RoHS-compliant and what does the "G" suffix indicate?
Yes, the 1.5KE82A is RoHS-compliant. The "G" suffix explicitly denotes a Pb-free (lead-free) axial package conforming to Directive 2011/65/EU. This includes lead-free plating on copper leads and halogen-free molding compound. The 1.5KE82A supports standard lead-free soldering profiles with peak temperature up to 260 °C for 10 seconds at 1/16 inch from the case body, as specified in the mechanical characteristics section.
How does the 1.5KE82A differ from bidirectional TVS diodes like 1.5KE82CA?
The 1.5KE82A is unidirectional and functions only in reverse breakdown, blocking forward current beyond ~3.5 V VF. In contrast, 1.5KE82CA provides symmetrical clamping for AC lines or floating signals. The 1.5KE82A is selected when protecting DC-biased lines (e.g., +24 V rails) where forward conduction must be avoided-its polarity band clearly identifies the cathode for correct orientation. Using 1.5KE82A in AC applications risks forward conduction and failure.
Can the 1.5KE82A be used in parallel to increase surge current handling?
No-parallel connection of 1.5KE82A devices is not recommended due to mismatched VBR tolerances (±5% typical), which causes uneven current sharing and potential thermal runaway. For higher IPP requirements, select a single higher-rated device (e.g., 3KP82A) or implement external current-sharing resistors with careful thermal derating. The 1.5KE82A's 13.3 A IPP is validated per JEDEC test conditions and must not be extrapolated beyond its specified 1 ms pulse rating.
Does the 1.5KE82A require heatsinking in continuous operation?
No-the 1.5KE82A is rated for 5.0 W steady-state power dissipation at TL ≤ 25°C with 3/8″ lead length, and its primary function is transient suppression, not continuous conduction. Under normal operation, it draws only microamps of leakage current (<5 µA at 70.1 V). Heatsinking is unnecessary unless subjected to frequent repetitive surges exceeding derating curves in Figure 2; in such cases, PCB copper area and lead length become the dominant thermal paths-not discrete heatsinks.
1.5KE82A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 70.1V
- Voltage - Breakdown (Min):
- 77.9V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 13.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -50°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE82A FAQ
1.How can I place an order for 1.5KE82A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE82A 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 1.5KE82A reliable?
The price and inventory of 1.5KE82A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE82A is usually 5 days.
3.What payment methods are accepted for 1.5KE82A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE82A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE82A?
1.5KE82A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE82A 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 1.5KE82A?
For technical support, including 1.5KE82A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE82A requirements.
6.How does Aetrix verify that 1.5KE82A is sourced from the original manufacturer or authorized distributors?
All 1.5KE82A 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 1.5KE82A meets industry standards.
7.What is the process for return or replacement of 1.5KE82A?
All 1.5KE82A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE82A, 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 1.5KE82A part is unused and in its original packaging.
Return procedure for 1.5KE82A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE82A 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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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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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
Toshiba Semiconductor and Storage
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Diodes Incorporated
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