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onsemi 1N6376
- Part No.:
- 1N6376
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6376.pdf
- Description:
- TVS DIODE 12VWM 21.2VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:8,049
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Product details
Overview
1N6376 from ON Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in axial-leaded Surmetic plastic package, designed for parallel clamping of high-energy transients. It features 12 V working peak reverse voltage (VRWM), 21.2 A peak pulse current (IPP), 16.1 V clamping voltage (VC) at IPP, <2 µA leakage at VRWM, and sub-1 ns response time. It protects power supplies and industrial control circuits against ESD and lightning-induced surges.
For engineers reviewing the 1N6376 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, package dimensions, clamping behavior under 1 ms pulses, thermal derating curves, and real-world layout guidance for surge protection design.
Technical Context
The 1N6376 operates as a silicon avalanche diode with precise Zener-based breakdown triggering at 14.1 V (VBR min) and tight tolerance (±5% typical). Its low dynamic impedance (<1 Ω at IPP) ensures stable clamping during 1500 W, 1 ms non-repetitive surges per JEDEC standard.
Designed for unidirectional operation, it conducts only in reverse bias above VRWM and blocks forward current up to 100 A surge (IFSM). Thermal resistance is 20 °C/W junction-to-lead, enabling 5.0 W steady-state dissipation at TL ≤ 75°C with 3/8″ lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 12 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system DC bus rating. |
| VBR (min) | 14.1 V @ IT = 1.0 A - Guaranteed avalanche onset voltage; defines lower bound of clamping threshold. |
| VC @ IPP | 16.1 V @ 21.2 A - Peak clamped voltage during 1500 W transient; determines maximum stress on protected ICs. |
| IPP | 21.2 A - Peak pulse current capability at 1 ms; defines surge energy handling (E ≈ 15 J). |
| IR @ VRWM | <2 µA - Reverse leakage at rated working voltage; ensures negligible standby power loss. |
| Response Time | <1 ns - Time from transient onset to conduction; critical for protecting fast CMOS/MOS inputs. |
| ESD Rating | Class 3 (>16 kV HBM) - Validated human-body-model robustness for board-level ESD immunity. |
Pinout & Package
Package: Axial-leaded Surmetic plastic case (ON Semiconductor Case 41A-04), Pb-free, void-free transfer-molded thermoset. Cathode indicated by polarity band. Leads solderable at 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., +12 V supply); conducts when transient exceeds VRWM. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without failure in properly designed layouts. |
| Low clamping ratio (VC/VBR ≈ 1.14) | Minimizes overvoltage margin between breakdown and clamp, improving protection headroom for 12 V systems. |
| Sub-1 ns response time | Enables protection of high-speed interfaces (e.g., RS-485, CAN FD PHYs) where nanosecond-scale transients dominate. |
| Pb-free Surmetic axial package | Meets RoHS compliance while retaining mechanical robustness and thermal performance of legacy 1N6xxx series. |
| ESD Class 3 rating | Validated for direct handling in manufacturing environments without additional board-level ESD safeguards. |
Applications
| Industrial Power Supply Protection | Medical Equipment Input Stage |
|---|---|
Use Scenario: Clamping 12 V DC input rails against load-dump and inductive switching transients in PLC power modules. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input capacitor, conducting only during reverse-polarity surges. Use Value: Limits voltage excursion to ≤16.1 V, preventing damage to downstream 12 V-rated DC-DC controllers and microcontrollers. | Use Scenario: Protecting isolated 12 V auxiliary supplies in diagnostic imaging equipment from ESD events during cable connection. IC Role / Device Role / Timing Role: Standby clamping device with <2 µA leakage, ensuring no interference with low-noise analog sensor biasing. Use Value: Delivers >16 kV HBM ESD immunity without degrading signal integrity or introducing offset in precision front-end circuits. |
| Automotive Body Control Module | Telecom Line Interface Card |
Use Scenario: Safeguarding 12 V battery-fed microcontroller I/O lines against jump-start induced transients. IC Role / Device Role / Timing Role: Fast-response shunt protector mounted directly at connector entry point to minimize trace inductance. Use Value: Sub-1 ns turn-on prevents overshoot beyond 16.1 V, preserving GPIO latch-up immunity of automotive-grade MCUs. | Use Scenario: Transient suppression on 12 V bias lines feeding RS-485 transceivers in base station remote units. IC Role / Device Role / Timing Role: Unidirectional clamp with low dynamic impedance, maintaining signal edge fidelity during surge events. Use Value: 20 °C/W junction-to-lead thermal resistance supports reliable operation under repeated 100-pulse-per-hour surge conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Surface-mount SMC package (vs. axial); 12 V VRWM, 19.9 V VC @ 21.1 A; 600 W peak power (vs. 1500 W) | Requires PCB rework for SMT placement; lower surge rating limits use in high-energy industrial environments | Select when board space is constrained and surge threat level is ≤IEC 61000-4-5 Level 3. |
| 1N6375 | 10 V VRWM, 13.7 V VC @ 16.7 A; identical package, thermal, and construction; 1500 W rating retained | Lower clamping voltage suits 10 V logic rails but risks false triggering on 12 V nominal systems with ripple | Select when protecting 10 V subsystems where tighter clamping margin is required over 12 V operation. |
Compared with SMBJ12A and 1N6375, the 1N6376 provides higher surge energy handling in an axial through-hole format ideal for prototyping and high-reliability industrial power entry points, while maintaining compatibility with legacy 1N6xxx footprint and mounting practices.
Availability
1N6376 is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment input stages, automotive body control modules, and telecom line interface cards requiring stable component supply and long-term obsolescence management.
Supply support for 1N6376 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 power management, analog, sensors, and discrete devices for automotive, industrial, cloud, and medical markets.
The 1N6376 belongs to the Mosorb 1N6373–1N6381 series-ON Semiconductor's high-reliability, axial-leaded TVS family engineered for cost-effective, high-energy transient suppression in harsh industrial and transportation environments.
FAQ
What is the maximum clamping voltage of the 1N6376 under a 1500 W transient?
The 1N6376 clamps to a maximum of 16.5 V at its rated peak pulse current of 21.2 A (per datasheet Figure 5 waveform). This value is measured under standardized 1 ms unidirectional surge conditions and represents the worst-case voltage seen by protected circuitry during full-rated transient events. The 1N6376 maintains this clamping performance across its specified operating temperature range of −65°C to +175°C.
Is the 1N6376 compatible with lead-free soldering processes?
Yes, the 1N6376 is supplied in a Pb-free Surmetic axial package compliant with RoHS Directive 2011/65/EU. Its leads are rated for soldering at 260°C for 10 seconds at 1/16″ from the case, matching standard lead-free reflow and hand-soldering profiles. The "G" suffix in the ordering code (1N6376, G) explicitly denotes this Pb-free construction.
How does the 1N6376 differ from the 1N6377 in terms of voltage ratings?
The 1N6376 has a 12 V working peak reverse voltage (VRWM) and 14.1 V minimum breakdown voltage (VBR), while the 1N6377 is rated for 15 V VRWM and 17.6 V VBR min. Both share identical package, surge rating (1500 W), and thermal characteristics, but the 1N6377 targets 15 V nominal systems where higher clamping headroom is needed. Using 1N6376 on a 15 V rail risks premature conduction due to ripple or tolerance stack-up.
Can the 1N6376 be used in bidirectional configurations?
No, the 1N6376 is strictly unidirectional and must be oriented with cathode toward the protected line. Bidirectional protection requires either two 1N6376 diodes in series opposition or a dedicated bidirectional TVS such as SMAJ12CA. Attempting bidirectional use of a single 1N6376 will result in forward conduction and potential failure during positive transients.
What is the thermal resistance specification for the 1N6376, and how does it affect layout?
The 1N6376 has a junction-to-lead thermal resistance (RJL) of 20 °C/W, measured with 3/8″ lead length. This means each watt dissipated raises the junction temperature 20°C above lead temperature. For reliable 5.0 W steady-state operation, leads must be kept ≤75°C-requiring adequate copper pour, short traces, and avoidance of thermal bottlenecks near the device body in PCB layout.
1N6376 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):
- 12V
- Voltage - Breakdown (Min):
- 14.1V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- 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
1N6376 FAQ
1.How can I place an order for 1N6376 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6376 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 1N6376 reliable?
The price and inventory of 1N6376 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6376 is usually 5 days.
3.What payment methods are accepted for 1N6376?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6376 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6376?
1N6376 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6376 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 1N6376?
For technical support, including 1N6376 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6376 requirements.
6.How does Aetrix verify that 1N6376 is sourced from the original manufacturer or authorized distributors?
All 1N6376 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 1N6376 meets industry standards.
7.What is the process for return or replacement of 1N6376?
All 1N6376 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6376, 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 1N6376 part is unused and in its original packaging.
Return procedure for 1N6376:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6376 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
-
D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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