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onsemi 1N6276A
- Part No.:
- 1N6276A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6276A.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,834
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Product details
Overview
1N6276A 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 13.6 V, clamping voltage of 22.5 V at 67 A peak pulse current, and response time < 1 ns. It is used in power supply input stages, industrial I/O protection, and telecom line interfaces.
For engineers reviewing the 1N6276A datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system DC bus voltage, VC margin relative to IC absolute maximum ratings, surge current capability per IEC 61000-4-5 Level 4, and UL 497B recognition for isolated loop circuits.
Technical Context
The 1N6276A operates as a silicon avalanche diode with precise Zener-like breakdown behavior under transient overvoltage. Its low dynamic impedance (< 0.3 Ω typical) ensures stable clamping across 1 ms pulses, and its thermal resistance (RJL = 20 °C/W) supports reliable power dissipation when mounted with 3/8″ lead length.
It is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), exhibits < 5 µA leakage above 10 V, and maintains ±5% VBR tolerance (15.2–16.8 V) at 1 mA test current - enabling predictable turn-on in overvoltage protection circuits without false triggering during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage (VRWM) | 13.6 V - Maximum continuous DC or peak AC voltage the device blocks without clamping; selected to exceed nominal 12 V rail while allowing margin before breakdown. |
| Breakdown Voltage (VBR) | 15.2–16.8 V @ 1 mA - Tight tolerance ensures consistent turn-on threshold across production lots; critical for repeatable protection timing. |
| Clamping Voltage (VC) | 22.5 V @ 67 A - Maximum voltage seen by protected circuit during 1 ms surge; must stay below downstream IC absolute max rating (e.g., < 24 V logic). |
| Peak Pulse Power (PPK) | 1500 W @ 1 ms - Sustains high-energy transients per IEC 61000-4-5; derates linearly above 25°C ambient per Figure 1. |
| Leakage Current (IR) | < 5 µA @ 13.6 V - Negligible standby power loss and no measurable loading on 12 V bias networks. |
| Response Time | < 1 ns - Fast enough to clamp ESD events (IEC 61000-4-2) before damage occurs to CMOS inputs. |
| ESD Rating | Class 3 (>16 kV HBM) - Meets stringent electrostatic discharge immunity requirements for end-equipment certification. |
| UL Recognition | UL 497B (QVGV2) - Certified for use in isolated loop circuit protection, including telecom and process control safety systems. |
Pinout & Package
1N6276A is housed in an axial-leaded Surmetic plastic package (Case 41A), with cathode indicated by a polarity band. Leads are Pb-free, solderable at 230°C for 10 seconds at 1/16″ from case. Mounting position is unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path / low-side reference | Connected to ground or low-impedance return plane; carries full surge current during clamping event. |
| Cathode | Protected line connection | Connected to the signal or power line being safeguarded (e.g., +12 V rail); voltage at this node is clamped to ≤22.5 V during surge. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports Level 4 IEC 61000-4-5 (4 kV/2 Ω) surge testing without degradation when properly heatsinked. |
| UL 497B recognition | Validated for use in certified isolated loop protectors - eliminates need for additional safety agency retesting in industrial control designs. |
| Low zener impedance | Ensures minimal voltage overshoot during fast-rising transients; dynamic impedance < 0.3 Ω reduces clamping uncertainty. |
| ESD Class 3 compliance | Withstands >16 kV human-body-model discharges - suitable for front-panel connectors and unshielded I/O in medical and office equipment. |
| Axial lead, void-free molding | Enables automated through-hole assembly and provides mechanical robustness for vibration-prone environments (e.g., transportation, factory floor). |
Applications
| Industrial Power Supply Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 12 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +12 V rail and chassis ground to clamp transients before they reach DC/DC converter ICs. Use Value: Clamps 100 A surge to ≤22.5 V within 1 ns, preventing latch-up or gate oxide rupture in synchronous buck controllers rated for 24 V absolute max. |
Use Scenario: RS-485 data line termination in outdoor base station equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: Paired with current-limiting resistor and common-mode choke; clamps differential-mode surges on A/B lines to ground. Use Value: Maintains signal integrity by limiting transient overvoltage to <22.5 V while adding <0.5 pF capacitance - negligible impact on 10 Mbps data rate. |
| Medical Equipment I/O Protection | Automotive Body Control Module (BCM) Inputs |
Use Scenario: Front-panel USB and button inputs on diagnostic imaging console requiring IEC 60601-1-2 ESD immunity. IC Role / Device Role / Timing Role: Discrete TVS on each low-speed signal line, referenced to system ground, providing primary ESD shunt path. Use Value: Achieves >16 kV HBM rating and passes IEC 61000-4-2 contact discharge at ±8 kV - meets Class B immunity requirements without added filtering. |
Use Scenario: Wake-up input (e.g., door handle sensor) connected to 12 V battery rail in BCM, exposed to jump-start and alternator load dump. IC Role / Device Role / Timing Role: First-line protection element on wake line, placed directly at connector to minimize PCB trace inductance. Use Value: Withstands 12 V system load dump (ISO 7637-2 Pulse 5a) by clamping to 22.5 V for 400 ms, protecting 5 V microcontroller GPIO pins via series resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A | Surface-mount (DO-214AA), 600 W PPK, VRWM = 13 V, VC = 21.5 V @ 27.5 A | Limited to lower-energy transients; not rated for IEC 61000-4-5 Level 4 | Choose SMBJ13A only for space-constrained PCBs where surge threat is limited to ESD and local switching noise. |
| 1.5KE13A | Same axial package, identical electrical specs (VRWM = 13.6 V, VC = 22.5 V @ 67 A), but ON Semiconductor's proprietary part number variant | No functional difference; same UL 497B recognition and manufacturing lot traceability | 1.5KE13A is a direct form-fit-function alternative with identical performance and qualification - suitable for dual-sourcing. |
Compared with SMBJ13A, the 1N6276A delivers 2.5× higher surge energy handling and certified isolation-loop protection; compared with 1.5KE13A, it shares identical specifications but differs only in JEDEC marking convention - both are fully interchangeable in design and procurement.
Availability
1N6276A is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure equipment, medical diagnostic devices, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for 1N6276A 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 1N6276A belongs to the Mosorb™ 1500 W TVS family, engineered specifically for high-reliability overvoltage protection in harsh electromagnetic environments - emphasizing robust surge handling, safety certification, and long-term parametric stability.
FAQ
What is the maximum clamping voltage of the 1N6276A under surge conditions?
The 1N6276A has a maximum clamping voltage (VC) of 22.5 V when subjected to its rated peak pulse current of 67 A (1 ms exponential decay waveform per Figure 5). This value is guaranteed across temperature and production lots, and represents the highest voltage that will appear across the protected circuit during a worst-case transient event.
Is the 1N6276A suitable for bidirectional signal line protection?
No, the 1N6276A is a unidirectional TVS diode and conducts only in reverse breakdown - it must be oriented with cathode toward the protected line and anode to ground. For bidirectional protection (e.g., RS-485, USB D+/D−), a separate device such as 1N6276CA or SMBJ13CA is required; the 1N6276A offers no forward conduction capability beyond its specified 3.5 V forward voltage at 100 A.
Does the 1N6276A meet UL 497B requirements for isolated loop protection?
Yes, the 1N6276A is explicitly listed under UL 497B (File #116110, QVGV2 category) for isolated loop circuit protection. This certification covers dielectric withstand, endurance conditioning, strike voltage breakdown, and discharge testing - confirming suitability for safety-critical telecom and process control applications where galvanic isolation integrity is mandated.
What is the thermal resistance and steady-state power rating of the 1N6276A?
The 1N6276A has a junction-to-lead thermal resistance (RJL) of 20 °C/W and a steady-state power dissipation (PD) of 5.0 W at lead temperature (TL) ≤ 75°C with 3/8″ lead length. Power derates linearly above 75°C at 20 mW/°C, meaning it sustains only ~1.0 W at TL = 125°C - confirming its role as a transient-only protector, not a continuous-power device.
How does the 1N6276A compare to the 1.5KE13A in terms of electrical performance?
The 1N6276A and 1.5KE13A are electrically identical: both specify VRWM = 13.6 V, VBR = 15.2–16.8 V @ 1 mA, VC = 22.5 V @ 67 A, and 1500 W peak power. They share the same Case 41A package, UL 497B recognition, and manufacturing process - differing only in JEDEC (1N6276A) vs. ON Semiconductor proprietary (1.5KE13A) part numbering. The 1N6276A is the JEDEC-standardized version.
1N6276A 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- 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
1N6276A FAQ
1.How can I place an order for 1N6276A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6276A 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 1N6276A reliable?
The price and inventory of 1N6276A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6276A is usually 5 days.
3.What payment methods are accepted for 1N6276A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6276A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6276A?
1N6276A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6276A 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 1N6276A?
For technical support, including 1N6276A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6276A requirements.
6.How does Aetrix verify that 1N6276A is sourced from the original manufacturer or authorized distributors?
All 1N6276A 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 1N6276A meets industry standards.
7.What is the process for return or replacement of 1N6276A?
All 1N6276A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6276A, 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 1N6276A part is unused and in its original packaging.
Return procedure for 1N6276A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6276A Tags
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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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