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onsemi 1N6288A
- Part No.:
- 1N6288A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6288A.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,492
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Product details
Overview
1N6288A 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 43.6 V working peak reverse voltage (VRWM), 51 V breakdown voltage (VBR) at 1 mA test current, and clamps to 70.1 V at 21.4 A peak pulse current (IPP), making it suitable for industrial power supply input stage surge protection.
For engineers reviewing the 1N6288A datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC VMAX, VRWM alignment with DC bus voltage, UL 497B certification for isolated loop circuits, and axial leaded Surmetic package compatibility with through-hole PCB layouts.
Technical Context
The 1N6288A operates as a silicon avalanche diode in reverse-biased mode, triggering into low-impedance conduction when transient voltage exceeds its VBR of 48.5–53.6 V. Its sub-nanosecond response time (<1 ns) and low dynamic impedance ensure rapid clamping before downstream components experience overvoltage stress.
It is rated for 1500 W nonrepetitive peak pulse power (1 ms waveform), with thermal derating above 75°C ambient and junction-to-lead thermal resistance of 20°C/W. The device meets Class 3 ESD immunity (>16 kV HBM) and is UL 497B recognized for isolated loop circuit protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 43.6 V - Maximum continuous reverse operating voltage; must be ≥ system DC rail to avoid leakage-induced heating |
| VBR @ IT=1 mA | 48.5–53.6 V - Breakdown threshold range; defines minimum trigger point under standardized test conditions |
| VC @ IPP=21.4 A | 70.1 V - Clamped voltage during 1 ms surge; determines maximum stress on protected load |
| PPK | 1500 W - Peak surge power handling capability; validates robustness against IEC 61000-4-5 Level 4 transients |
| IR @ VRWM | 5 µA max - Reverse leakage at rated VRWM; ensures minimal standby power loss in high-impedance circuits |
| Response Time | <1 ns - Time from transient onset to clamping initiation; critical for protecting fast CMOS/MOS inputs |
| ESD Rating | Class 3 (>16 kV HBM) - Confirmed human-body-model electrostatic discharge immunity per ANSI/ESDA/JEDEC JS-001 |
| UL Recognition | UL 497B QVGV2 - Certified for use in telecom/data line protectors and isolated loop applications |
Pinout & Package
Package: Axial-leaded Surmetic plastic case (JEDEC Case 41A), void-free thermosetting epoxy, cathode indicated by band. Lead finish is Pb-free; max soldering temperature is 230°C at 1/16″ from case for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-bias operation | Connected to system ground or low-side reference; defines polarity for unidirectional clamping |
| Cathode | Transient voltage input node | Connected to protected line (e.g., +12 V rail); conducts surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against severe lightning-induced surges (IEC 61000-4-5 2 Ω/12 Ω coupling) |
| Clamp voltage ≤ 70.1 V @ 21.4 A | Provides ≥15 V margin below typical 85 V absolute maximum rating of industrial-grade DC-DC controllers |
| UL 497B recognition | Validates suitability for safety-critical telecom/data line isolation barriers without additional certification effort |
| Sub-1 ns response time | Minimizes overshoot before clamping engages-critical for safeguarding <10 ns propagation delay logic interfaces |
| Pb-free Surmetic axial package | Ensures RoHS compliance and long-term solderability with standard wave/reflow profiles |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
|
Use Scenario: 24 V DC industrial PLC power input exposed to inductive switching transients and lightning-coupled surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed across input terminals to shunt surge energy to chassis ground. Use Value: Limits transient voltage to ≤70.1 V, preventing damage to upstream rectifier bridges and downstream 24 V regulators rated for 80 V max input. |
Use Scenario: RS-485 data line interface in building automation systems connected to outdoor sensors. IC Role / Device Role / Timing Role: Primary surge suppression device on differential pair, referenced to signal ground. Use Value: UL 497B certification confirms compliance for isolated loop protection; 5 µA leakage avoids bias current errors in precision termination networks. |
| Medical Equipment AC/DC Adapter Input | Process Control Analog Signal Conditioning |
|
Use Scenario: Secondary-side DC output of medical-grade AC/DC adapter powering analog front-end circuitry. IC Role / Device Role / Timing Role: Final-stage overvoltage clamp before LDO regulator input to prevent latch-up in patient-connected subsystems. Use Value: 43.6 V VRWM aligns with nominal 48 V adapter output; 70.1 V clamping ensures LDO's 75 V abs max rating is never exceeded. |
Use Scenario: 4–20 mA current loop transmitter output stage subjected to field wiring faults and ESD events. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional 1N6288A placed between loop+ and ground to absorb positive-going transients. Use Value: Low 5 µA leakage preserves loop accuracy; 1500 W rating withstands multiple 100 A/10 µs fault currents per IEC 61000-4-4. |
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; 600 W PPK | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 without derating | Select when board space is constrained and surge threat level is ≤ Level 3 (1 kV/2 kV) |
| 1.5KE51A | Same electrical specs and case 41A package; identical marking except manufacturer prefix (1.5KE vs 1N6) | No functional difference; dual-sourced part with identical qualification and reliability data | Preferred for new designs due to ON Semiconductor's preferred-device status and extended lifecycle support |
Compared with SMBJ51A, the 1N6288A delivers 2.5× higher surge power handling and proven robustness in high-energy industrial environments; compared with 1.5KE51A, it shares identical performance but reflects legacy JEDEC registration-both remain fully interchangeable in existing designs.
Availability
1N6288A is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, medical equipment adapters, and process control signal conditioning requiring stable component supply and long-term obsolescence management.
Supply support for 1N6288A 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 consumer markets.
The 1N6288A belongs to the 1N6267A Series Mosorb TVS family, engineered specifically for cost-effective, high-reliability surge protection in harsh industrial and communications infrastructure environments.
FAQ
What is the maximum clamping voltage of the 1N6288A under surge conditions?
The 1N6288A clamps to a maximum of 70.1 V when subjected to its rated peak pulse current of 21.4 A (1 ms exponential waveform). This value is measured per Figure 5 in the official ON Semiconductor datasheet and represents the worst-case voltage seen by downstream circuitry during a full-power transient event. Designers must verify that this clamping voltage remains below the absolute maximum ratings of all protected components.
Is the 1N6288A suitable for bidirectional transient suppression?
No, the 1N6288A is a unidirectional TVS diode and only protects against positive-going transients on the cathode terminal relative to anode. For bidirectional protection, ON Semiconductor offers the 1.5KE51CA variant, which provides symmetrical clamping for both polarities. Using the 1N6288A in a bidirectional configuration risks failure during negative transients, as it lacks reverse breakdown capability.
Does the 1N6288A meet UL 497B requirements for isolated loop protection?
Yes, the 1N6288A is explicitly UL 497B recognized (File #116110, category QVGV2) for use in isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, and strike voltage breakdown testing-validating its suitability in telecom/data line isolators where galvanic separation and safety compliance are mandatory.
What is the thermal resistance and power derating behavior of the 1N6288A?
The 1N6288A has a junction-to-lead thermal resistance (RJL) of 20°C/W and a steady-state power dissipation limit of 5.0 W at TL ≤ 75°C. Above 75°C, it derates linearly at 20 mW/°C. This means at 100°C lead temperature, usable steady-state power drops to 4.5 W. Derating curves for pulsed operation are provided in Figures 1 and 2 of the datasheet.
Can the 1N6288A be used in surface-mount designs?
No-the 1N6288A is exclusively offered in an axial-leaded Surmetic plastic package (Case 41A) and is not available in SMD formats. For surface-mount alternatives with similar electrical performance, consider the SMBJ51A (600 W) or SMCJ51A (1500 W), though these require PCB layout changes and may differ in thermal performance and surge robustness.
1N6288A 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):
- 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
1N6288A FAQ
1.How can I place an order for 1N6288A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6288A 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 1N6288A reliable?
The price and inventory of 1N6288A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6288A is usually 5 days.
3.What payment methods are accepted for 1N6288A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6288A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6288A?
1N6288A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6288A 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 1N6288A?
For technical support, including 1N6288A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6288A requirements.
6.How does Aetrix verify that 1N6288A is sourced from the original manufacturer or authorized distributors?
All 1N6288A 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 1N6288A meets industry standards.
7.What is the process for return or replacement of 1N6288A?
All 1N6288A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6288A, 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 1N6288A part is unused and in its original packaging.
Return procedure for 1N6288A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6288A 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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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
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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Diodes Incorporated
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