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onsemi 1N6374
- Part No.:
- 1N6374
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1N6374.pdf
- Description:
- TVS DIODE 8VWM 15VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,929
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Product details
Overview
1N6374 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 8.0 V working peak reverse voltage (VRWM), 15 A peak pulse current (IPP), 11.3 V clamping voltage (VC) at IPP, <25 µA reverse 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 1N6374 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse power handling (1500 W @ 1 ms), thermal resistance (20 °C/W), and Pb-free axial lead compatibility with wave soldering at 260 °C.
Technical Context
The 1N6374 operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<25 µA leakage at 8.0 V), then avalanches sharply at breakdown (VBR = 9.4–11.5 V @ 1 A) to limit transient overvoltage. Its low dynamic impedance ensures stable clamping during 15 A pulses.
It uses a Zener-based avalanche structure optimized for fast turn-on (<1 ns), low clamping overshoot, and robust surge endurance (1500 W non-repetitive, 1 ms). Thermal design relies on junction-to-lead resistance (20 °C/W) and 3/8″ lead length for steady-state dissipation (5.0 W @ TL ≤ 75 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| IPP | 15 A - Peak surge current the device safely clamps without failure (per Figure 5 waveform) |
| VC @ IPP | 11.3 V - Clamped voltage seen by protected circuit during 15 A transient |
| VBR @ IT=1 A | 9.4–11.5 V - Breakdown onset range; defines minimum clamping threshold |
| RJL | 20 °C/W - Junction-to-lead thermal resistance; determines temperature rise under 5.0 W steady-state load |
| Response Time | <1 ns - Enables suppression of fast-rising ESD and switching transients before downstream damage |
| ESD Rating | Class 3 (>16 kV HBM) - Validated immunity to human-body model electrostatic discharge events |
Pinout & Package
Package: Axial-leaded Surmetic plastic case (ON Semiconductor Case 41A-04), Pb-free, cathode indicated by band. Dimensions: A = 8.5–9.5 mm (length), B = 4.8–5.3 mm (diameter), D = 0.96–1.06 mm (lead diameter), K = 25.4 mm (lead length).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-potential rail in unidirectional clamp configuration |
| Cathode | High-side transient input terminal | Connected to signal/power line being protected; polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation when properly mounted |
| Clamping ratio VC/VBR ≈ 1.2 | Ensures tight voltage margin between operating rail (e.g., 5 V or 12 V systems) and safe clamping level |
| Low zener impedance | Maintains stable VC across varying IPP (1–15 A), critical for consistent protection in noisy environments |
| Pb-free axial package | Complies with RoHS; supports automated wave soldering at 260 °C for 10 s at 1/16″ from case |
| −65 °C to +175 °C operating range | Enables use in under-hood automotive modules and industrial motor drives with wide ambient swings |
Applications
| Industrial Power Supply Protection | Medical Equipment Surge Suppression |
|---|---|
Use Scenario: Protects 12 V DC input rails in programmable logic controllers (PLCs) against induced lightning surges on long field wiring. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode placed directly across input terminals to clamp transients before they reach upstream regulators and microcontrollers. Use Value: Limits voltage to 11.3 V during 15 A surges, preventing latch-up or gate oxide rupture in 12 V-rated power management ICs. | Use Scenario: Shields patient-connected analog front-end inputs in diagnostic ultrasound systems from ESD events during probe handling. IC Role / Device Role / Timing Role: Fast-response (<1 ns) transient suppressor installed at board edge connector to divert HBM-class ESD before reaching precision ADCs and op-amps. Use Value: Delivers >16 kV HBM ESD immunity while adding only ~10 pF capacitance, preserving signal integrity in 10 MHz bandwidth paths. |
| Telecom Line Interface Protection | Automotive Body Control Module Inputs |
Use Scenario: Safeguards RS-485 transceiver lines in building automation gateways exposed to induced surges from nearby AC mains or relay switching. IC Role / Device Role / Timing Role: Bidirectionally unused unidirectional TVS configured with series impedance to protect differential bus lines against common-mode transients. Use Value: Clamps 1 kV/500 Ω surges to ≤11.5 V within nanoseconds, maintaining data integrity and avoiding transceiver reset or damage. | Use Scenario: Guards wake-up inputs (e.g., door handle sensors) in automotive BCMs against battery dump and load-switch transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: High-energy (1500 W) transient suppressor mounted at connector interface to absorb 100–200 A surge currents. Use Value: Withstands −65 °C to +175 °C operation and maintains 11.3 V clamping under 15 A pulses, ensuring reliability in under-dash environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Surface-mount SMB package; 8.0 V VRWM; 12.5 V VC @ 13.7 A; 600 W peak power | Lower peak power rating and SMT footprint require PCB redesign; better for space-constrained designs | Select when board area is limited and surge energy is ≤600 W; verify thermal pad layout for 5.0 W steady-state dissipation |
| 1N6375, G | Same package and construction; higher VRWM (10 V); 13.7 V VC @ 16.7 A; identical 1500 W rating | Used where protected circuit operates at 12–15 V rails and requires wider clamping margin | Choose for 12 V systems needing ≥2 V headroom above nominal rail; same mounting and soldering process as 1N6374 |
Compared with SMBJ8.0A, the 1N6374 offers 2.5× higher surge power and axial-leaded through-hole mounting for high-reliability industrial connections; compared with 1N6375, G, it provides tighter clamping for 8–10 V systems but lower VRWM headroom.
Availability
1N6374 is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment interfaces, and telecom line protection requiring stable component supply and long-term obsolescence management.
Supply support for 1N6374 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, sensor, and connectivity solutions for automotive, industrial, cloud, and medical markets.
The 1N6374 belongs to the Mosorb 1N6373–1N6381 series - a family of high-power unidirectional TVS diodes engineered for robust transient suppression in harsh industrial and communications environments.
FAQ
What is the maximum clamping voltage of the 1N6374 during a 15 A transient event?
The 1N6374 exhibits a maximum clamping voltage (VC) of 11.3 V when subjected to its rated 15 A peak pulse current (IPP), as specified in the Electrical Characteristics table at TA = 25°C. This value is measured using the standardized 1 ms exponential pulse waveform defined in Figure 5 of the datasheet and represents the upper bound of voltage seen by the protected circuit during worst-case surge conditions.
Can the 1N6374 be used in bidirectional protection configurations?
No, the 1N6374 is a unidirectional TVS diode and must be used with correct polarity - cathode toward the protected line, anode to ground. For bidirectional protection, two 1N6374 devices would need back-to-back connection, but this is not recommended due to mismatched VBR and increased leakage; instead, use a purpose-built bidirectional part like SMAJ8.0CA.
What is the thermal resistance and steady-state power rating of the 1N6374?
The 1N6374 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 ≤75°C with 3/8″ lead length. Derating is required above 75°C at 20 mW/°C, and the device is not intended for continuous power dissipation - it is optimized for transient suppression only.
Is the 1N6374 RoHS-compliant and compatible with lead-free soldering processes?
Yes, the "G" suffix in 1N6374, G indicates a Pb-free package. The device is RoHS-compliant and qualified for lead-free wave soldering at 260°C for 10 seconds measured 1/16″ from the case body, per ON Semiconductor's Soldering and Mounting Techniques Reference Manual.
How does the 1N6374 compare to the 1N6373 in terms of voltage ratings and clamping performance?
The 1N6374 has a higher working peak reverse voltage (VRWM = 8.0 V vs. 5.0 V for 1N6373) and correspondingly higher clamping voltage (VC = 11.3 V @ 15 A vs. 9.4 V @ 160 A). Its breakdown voltage range (9.4–11.5 V) is also elevated versus 1N6373 (6.0–7.5 V), making the 1N6374 suitable for 8–10 V system rails where the 1N6373 is intended for 5 V logic-level protection.
1N6374 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):
- 8V
- Voltage - Breakdown (Min):
- 9.4V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- 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
1N6374 FAQ
1.How can I place an order for 1N6374 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6374 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 1N6374 reliable?
The price and inventory of 1N6374 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6374 is usually 5 days.
3.What payment methods are accepted for 1N6374?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6374 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6374?
1N6374 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6374 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 1N6374?
For technical support, including 1N6374 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6374 requirements.
6.How does Aetrix verify that 1N6374 is sourced from the original manufacturer or authorized distributors?
All 1N6374 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 1N6374 meets industry standards.
7.What is the process for return or replacement of 1N6374?
All 1N6374 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6374, 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 1N6374 part is unused and in its original packaging.
Return procedure for 1N6374:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6374 Tags
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Nexperia USA Inc.
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