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onsemi 1N6290A
- Part No.:
- 1N6290A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6290A.pdf
- Description:
- TVS DIODE 53VWM 85VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,139
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Product details
Overview
1N6290A from ON Semiconductor is a unidirectional 1500 W transient voltage suppressor (TVS) diode designed for parallel clamping protection of sensitive electronics against high-energy surges. It features a 53 V working peak reverse voltage (VRWM), 62 V breakdown voltage (VBR) at 1 mA test current, and clamps to 85 V at 17.7 A peak pulse current - used in power supply input stages, industrial control I/O lines, and telecom interface protection.
For engineers reviewing the 1N6290A datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to system operating voltage, surge current handling under 1 ms pulses, UL 497B recognition for isolated loop circuits, and axial leaded Surmetic package compatibility with through-hole PCB assembly.
Technical Context
The 1N6290A operates as a silicon avalanche diode with fast <1 ns response time and low dynamic impedance, enabling effective suppression of ESD and lightning-induced transients. Its unidirectional configuration provides reverse-biased clamping only, requiring correct polarity placement across protected DC rails.
Thermal design relies on junction-to-lead resistance of 20 °C/W and derating above 75 °C ambient; steady-state power dissipation is limited to 5.0 W at TL ≤ 75 °C with 3/8″ lead length. It meets Class 3 ESD rating (>16 kV HBM) and UL 497B certification for isolated loop circuit protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W @ 1 ms - sustains single high-energy surges without failure |
| Working Peak Reverse Voltage (VRWM) | 53 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Breakdown Voltage (VBR) | 62 V @ 1 mA - precise avalanche onset threshold for predictable clamping behavior |
| Clamping Voltage (VC) | 85 V @ 17.7 A IPP - maximum voltage seen by protected circuit during rated surge |
| Leakage Current | <5 µA @ VRWM - negligible standby power loss and signal integrity impact |
| Response Time | <1 ns - limits voltage overshoot during fast-rising transients (e.g., ESD) |
| ESD Rating | Class 3 (>16 kV HBM) - exceeds IEC 61000-4-2 Level 4 immunity requirements |
Pinout & Package
1N6290A uses an axial-leaded Surmetic plastic package (Case 41A), with cathode indicated by a polarity band. Leads are tin-plated, solderable at 230 °C for 10 seconds at 1/16″ from case. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamping |
| Cathode | Avalanche clamping terminal | Connected to higher-potential line (e.g., VIN, signal rail); polarity band identifies this pin |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Qualified for isolated loop circuit protection - enables compliance in telecom and industrial safety-critical designs |
| Low Zener Impedance | Ensures stable clamping voltage under varying surge currents - critical for protecting CMOS/MOS inputs |
| Pb-Free External Lead Finish | Complies with RoHS Directive 2011/65/EU - supports environmentally compliant manufacturing |
| Void-Free Transfer-Molded Case | Enhances thermal reliability and moisture resistance - improves long-term field stability |
| 1500 W Surge Rating | Handles IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) surges without degradation |
Applications
| Industrial PLC I/O Protection | AC/DC Power Supply Input Stage |
|---|---|
Use Scenario: Protecting digital input modules from induced surges on 24 V DC field wiring in factory automation environments. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching optocoupler or MCU GPIO. Use Value: Limits voltage to 85 V during 17.7 A surges, preserving 3.3 V/5 V logic interfaces and meeting IEC 61000-4-4 immunity requirements. |
Use Scenario: Safeguarding bridge rectifier outputs and bulk capacitor charging paths against line-switching transients and lightning surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC bus to absorb energy and prevent overvoltage damage to downstream regulators and controllers. Use Value: Clamps 1500 W surges within 1 ns, reducing stress on electrolytic capacitors and MOSFETs while maintaining UL 497B compliance. |
| Medical Equipment Signal Lines | Telecom Line Interface Circuits |
Use Scenario: Shielding analog sensor inputs (e.g., temperature, pressure) in diagnostic devices from ESD events during handling or cable coupling. IC Role / Device Role / Timing Role: Low-leakage (<5 µA) TVS placed at connector entry point to shunt ESD before precision amplifier front-end. Use Value: Prevents latch-up or parametric shift in instrumentation amplifiers while adding negligible offset error due to ultra-low leakage. |
Use Scenario: Protecting RS-485 transceivers and isolation barriers in building management systems exposed to induced surges on long cable runs. IC Role / Device Role / Timing Role: UL 497B-recognized TVS integrated into isolated loop interface to meet ANSI/TIA-968-B surge immunity standards. Use Value: Enables certified surge protection up to 1 kV differential mode without compromising common-mode rejection or data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | Surface-mount SMB package; 58 V VRWM; 1000 W rating; 93.6 V VC @ 10.7 A | Requires PCB rework for SMT layout; lower surge capacity but smaller footprint | Select when board space is constrained and 1000 W surge margin suffices |
| 1.5KE62A | Same electrical specs and axial package; identical JEDEC marking; manufactured by ON Semiconductor as dual-part-number variant | No functional or mechanical difference - direct form-fit-function replacement | Preferred for new designs due to ON Semiconductor's preferred-device status and enhanced supply continuity |
Compared with SMBJ58A, the 1N6290A offers 50% higher surge power and through-hole mounting robustness; compared with 1.5KE62A, it shares identical performance but reflects legacy JEDEC nomenclature - both are electrically interchangeable in existing designs.
Availability
1N6290A is available at Aetrix Electronics and suitable for industrial PLC I/O protection, AC/DC power supply input stages, and medical equipment signal line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1N6290A 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 consumer markets.
The 1N6290A belongs to the Mosorb™ 1500 W TVS diode family, engineered specifically for high-reliability transient suppression in harsh electromagnetic environments - emphasizing clamping precision, surge endurance, and safety certification.
FAQ
What is the clamping voltage of the 1N6290A under maximum rated surge current?
The 1N6290A clamps to 85 V at its rated peak pulse current of 17.7 A, measured per the 1 ms exponential waveform defined in Figure 5 of the datasheet. This value ensures protected circuits remain below destructive voltage thresholds during standardized surge events such as IEC 61000-4-5.
Is the 1N6290A RoHS-compliant and lead-free?
Yes, the 1N6290A features a Pb-free external lead finish per ON Semiconductor's directive, complying with EU RoHS Directive 2011/65/EU. The internal die and bonding materials also meet exemption-free requirements, and the device carries no lead-free exemptions.
Can the 1N6290A be used in bidirectional protection circuits?
No - the 1N6290A is strictly unidirectional and must be installed with correct polarity (cathode to higher potential). For bidirectional protection, use the 1.5KE62CA or equivalent CA-suffix variant, which is tested and specified for symmetrical clamping in both directions.
What is the maximum steady-state power dissipation for the 1N6290A?
The 1N6290A dissipates up to 5.0 W continuously at lead temperature (TL) ≤ 75 °C with 3/8″ lead length. Power must be linearly derated by 20 mW/°C above 75 °C, reaching zero dissipation at TL = 325 °C - though practical operation stays well below this limit.
Does the 1N6290A have UL recognition for safety-critical applications?
Yes, the 1N6290A carries UL 497B recognition (File #116110, QVGV2 category) for isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown - validating its use in telecom and industrial safety-rated systems.
1N6290A 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):
- 53V
- Voltage - Breakdown (Min):
- 58.9V
- Voltage - Clamping (Max) @ Ipp:
- 85V
- Current - Peak Pulse (10/1000µs):
- -
- 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
1N6290A FAQ
1.How can I place an order for 1N6290A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6290A 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 1N6290A reliable?
The price and inventory of 1N6290A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6290A is usually 5 days.
3.What payment methods are accepted for 1N6290A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6290A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6290A?
1N6290A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6290A 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 1N6290A?
For technical support, including 1N6290A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6290A requirements.
6.How does Aetrix verify that 1N6290A is sourced from the original manufacturer or authorized distributors?
All 1N6290A 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 1N6290A meets industry standards.
7.What is the process for return or replacement of 1N6290A?
All 1N6290A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6290A, 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 1N6290A part is unused and in its original packaging.
Return procedure for 1N6290A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6290A Tags
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