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onsemi 1N6288AG
- Part No.:
- 1N6288AG
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6288AG.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,644
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Product details
Overview
1N6288AG from ON Semiconductor is a unidirectional 1500 W Mosorb transient voltage suppressor (TVS) diode in axial lead Surmetic package, designed for parallel clamping protection of sensitive electronics. It features a 43.6 V working peak reverse voltage (VRWM), 51 V breakdown voltage (VBR) at 1 mA, 70.1 V maximum clamping voltage (VC) at 21.4 A peak pulse current (IPP), and sub-1 ns response time - deployed in power supplies, industrial controls, and communication interfaces.
For engineers reviewing the 1N6288AG datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 1 ms transients, UL 497B certification for isolated loop protection, ESD robustness (>16 kV HBM), low zener impedance, and compatibility with Pb-free reflow soldering at 260°C.
Technical Context
The 1N6288AG operates as a unidirectional avalanche diode, entering conduction when reverse voltage exceeds its 51 V nominal breakdown threshold (VBR), clamping transient energy to ≤70.1 V at 21.4 A. Its thermal resistance (RJL) is 20 °C/W, enabling 5.0 W steady-state dissipation at 75 °C lead temperature with 3/8″ lead length.
It complies with UL 497B for isolated loop circuit protection and delivers Class 3 ESD immunity (>16 kV per Human Body Model). The device exhibits <5 µA leakage above 10 V and a temperature coefficient of 0.102 %/°C for VBR - critical for stable clamping across industrial temperature ranges (−65 °C to +175 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 43.6 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1 mA | 51 V (min 48.5 V, max 53.6 V) - precise avalanche onset point for predictable turn-on |
| VC @ IPP=21.4 A | 70.1 V - peak clamped voltage during 1 ms transient, limiting stress on downstream ICs |
| PPK | 1500 W @ 1 ms - high-energy surge handling capability for lightning or inductive switch-off events |
| Response Time | <1 ns - enables suppression before sensitive logic or analog circuits experience overvoltage damage |
| Leakage Current | <5 µA @ VRWM - negligible standby power loss and minimal signal path interference |
| ESD Rating | Class 3 (>16 kV HBM) - meets stringent electrostatic discharge immunity requirements |
Pinout & Package
1N6288AG uses an axial-leaded CASE 41A plastic package (Surmetic), with cathode identified by a polarity band. Leads are corrosion-resistant and readily solderable, rated for 260°C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side reference | Connected to ground or low-voltage rail in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal / high-side input | Connected to protected line (e.g., DC input, data line); polarity band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| UL 497B Recognition | Validated for isolated loop circuit protection - supports safety-compliant telecom and industrial interface designs |
| Low Zener Impedance | Enables tight clamping (70.1 V at 21.4 A) without significant voltage overshoot during fast transients |
| Pb-Free Construction | RoHS-compliant Surmetic axial package compatible with lead-free reflow and wave soldering processes |
| High Surge Reliability | Rated for non-repetitive 1500 W pulses - withstands repeated lightning-induced surges in outdoor power systems |
Applications
| Industrial Power Supply Protection | RS-485 Communication Line Clamp |
|---|---|
Use Scenario: Protecting 48 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed in parallel with input filter capacitor, clamping surges before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤70.1 V, preventing latch-up or gate oxide damage in 5 V/3.3 V logic powered from the same rail. | Use Scenario: Safeguarding RS-485 transceivers in factory automation networks exposed to ground potential differences and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional protection not required; 1N6288AG protects only the positive line (A or B) referenced to local ground, leveraging its 43.6 V VRWM to avoid false triggering during common-mode swings. Use Value: Clamps fast ESD events (<1 ns) while maintaining <5 µA leakage - no impact on bus biasing or signal integrity at 10 Mbps. |
| Medical Equipment Input Stage | AC-DC Adapter Secondary-Side Clamp |
Use Scenario: Shielding patient-connected monitoring devices (e.g., ECG front-ends) from mains-coupled transients entering via auxiliary power inputs. IC Role / Device Role / Timing Role: Primary overvoltage protector on low-voltage DC input (e.g., 12 V), placed upstream of LDO regulators and analog signal chains. Use Value: UL 497B recognition ensures compliance with medical isolation barrier standards; 16 kV HBM rating guards against operator-handling ESD. | Use Scenario: Suppressing flyback spikes on the secondary side of isolated AC-DC adapters used in consumer electronics. IC Role / Device Role / Timing Role: Unidirectional clamp between secondary output and ground, triggered only during positive overvoltage events caused by transformer leakage inductance. Use Value: 1500 W peak power rating absorbs repetitive 1 ms surges without degradation; 20 °C/W RJL supports reliable thermal management with standard PCB trace heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | Surface-mount SMB package; 51 V VBR; 64.5 V VC @ 23.3 A; lower PPK (600 W) | Requires PCB redesign for SMT placement; suited for space-constrained, high-density boards | Select when board real estate is limited and surge energy rarely exceeds 600 W |
| 1.5KE51A | Same axial CASE 41A package; identical electrical specs (VBR, VC, VRWM); legacy part number without Pb-free suffix | No functional or layout change needed; differs only in RoHS compliance documentation and marking | Select when Pb-free certification is not required and legacy inventory utilization is prioritized |
Compared with SMBJ51A and 1.5KE51A, the 1N6288AG provides identical clamping performance in a certified Pb-free axial package with UL 497B recognition - making it optimal for through-hole industrial designs requiring regulatory compliance and long-term supply stability.
Availability
1N6288AG is available at Aetrix Electronics and suitable for industrial power supplies, RS-485 network nodes, and medical auxiliary power inputs requiring stable component supply, long-lifecycle support, and UL-recognized surge protection.
Supply support for 1N6288AG 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 supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and IoT applications.
The 1N6288AG belongs to the 1N6267A Series of Mosorb TVS diodes - engineered specifically for high-reliability, high-energy transient suppression in harsh industrial and communications environments.
FAQ
What is the clamping voltage of the 1N6288AG at its rated peak pulse current?
The 1N6288AG has a maximum clamping voltage (VC) of 70.1 V at its specified peak pulse current (IPP) of 21.4 A, measured under the standard 1 ms exponential waveform per Figure 5 in the datasheet. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream components remain within their absolute maximum ratings. The 1N6288AG maintains this clamping performance across its full operating temperature range.
Is the 1N6288AG suitable for bidirectional transient protection?
No, the 1N6288AG is a unidirectional TVS diode, designed exclusively for clamping positive-going transients on a line referenced to ground. It does not protect against negative excursions. For bidirectional protection, two 1N6288AG devices would need to be configured in series opposition - but that is not recommended due to mismatched parameters and increased capacitance. Use a dedicated bidirectional part like SMAJ51CA instead. The 1N6288AG's datasheet explicitly specifies "Unidirectional" operation.
Does the 1N6288AG meet UL 497B certification, and what does that cover?
Yes, the 1N6288AG is UL 497B recognized (File #E210057, QVGQ2 category) for isolated loop circuit protection. This certification validates performance in strike voltage breakdown, endurance conditioning, dielectric withstand, and discharge testing - confirming suitability for protecting telecom lines, sensor interfaces, and other isolated data paths. UL 497B applies to the entire 1N6267A Series, including the 1N6288AG, and is documented in the official ON Semiconductor application notes and packaging brochures.
What is the maximum allowable soldering temperature and duration for the 1N6288AG?
The 1N6288AG is rated for a maximum lead temperature of 260°C for 10 seconds at a distance of 1/16 inch from the case body. This specification supports both Pb-free reflow and wave soldering processes. Exceeding this limit risks internal bond wire damage or delamination of the Surmetic plastic package. The device's axial leads are corrosion-resistant and readily solderable, and the datasheet confirms compatibility with standard industry soldering profiles when adhering to these thermal constraints.
How does the temperature coefficient affect the 1N6288AG's breakdown voltage in operation?
The 1N6288AG has a VBR temperature coefficient of +0.102 %/°C, meaning its breakdown voltage increases by approximately 52 mV per °C rise above 25°C. At +125°C junction temperature, VBR rises to ~56.5 V - still well below its 70.1 V clamping voltage, preserving margin. This positive drift improves system robustness in high-temperature environments, as higher VBR reduces leakage and false triggering, while VC remains stable enough to maintain protection integrity across the full −65 °C to +175 °C operating range.
1N6288AG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-201AD, Axial
- Series:
- Mosorb™
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- 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
1N6288AG FAQ
1.How can I place an order for 1N6288AG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6288AG 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 1N6288AG reliable?
The price and inventory of 1N6288AG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6288AG is usually 5 days.
3.What payment methods are accepted for 1N6288AG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6288AG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6288AG?
1N6288AG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6288AG 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 1N6288AG?
For technical support, including 1N6288AG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6288AG requirements.
6.How does Aetrix verify that 1N6288AG is sourced from the original manufacturer or authorized distributors?
All 1N6288AG 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 1N6288AG meets industry standards.
7.What is the process for return or replacement of 1N6288AG?
All 1N6288AG units undergo pre-shipment inspection (PSI). If there is an issue with 1N6288AG, 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 1N6288AG part is unused and in its original packaging.
Return procedure for 1N6288AG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6288AG Tags
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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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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