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onsemi 1N5379BG
- Part No.:
- 1N5379BG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5379BG.pdf
- Description:
- DIODE ZENER 110V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,322
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Product details
Overview
1N5379BG from onsemi is a 5 W axial-lead silicon Zener diode with nominal zener voltage of 110 V, ±5% tolerance, 12 Ω maximum zener impedance at 125 mA test current, and 1.4 A maximum DC zener current. It provides precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation for industrial power converters.
For engineers reviewing the 1N5379BG datasheet, pinout, applications, or equivalent options, key selection criteria include its 110 V nominal zener voltage, 5 W steady-state power rating at 75°C lead temperature, 1000 A surge current capability at 8.3 ms, and Class 3 ESD rating (>16 kV HBM).
Technical Context
This device operates as a two-terminal voltage reference using a silicon-oxide passivated junction, delivering stable reverse breakdown behavior under regulated DC or transient surge conditions. Its thermal design relies on lead-to-ambient conduction, with junction-to-lead thermal resistance dependent on 3/8″ lead length and derating above 75°C.
The 1N5379BG exhibits a positive temperature coefficient (~0.11 mV/°C per volt, extrapolated from Figure 3 for 110 V), low leakage (<0.5 µA at 83.6 V), and tight regulation-measured at both 10% and 50% of IZM-with voltage change limited by specified zener impedance and thermal coefficients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 110 V - precise regulation point for high-voltage reference and clamp applications |
| Zener Tolerance | ±5% - ensures predictable voltage window (104.5 V to 115.5 V) across production lots |
| Max Zener Impedance | 12 Ω @ 125 mA - low dynamic resistance enables stable regulation under load variation |
| Max DC Zener Current | 1.4 A - derived from 5 W / 110 V, defining safe continuous operating limit |
| Surge Current Rating | 1000 A @ 8.3 ms - supports robust transient suppression in power-line surge protectors |
| ESD Rating | Class 3 (>16 kV HBM) - withstands handling and board-level electrostatic discharge events |
| Operating Temperature | −65 °C to +200 °C - suitable for under-hood automotive and industrial environments |
Pinout & Package
Package: Axial-lead, transfer-molded thermosetting plastic (Case 17), cathode indicated by band. Lead diameter uncontrolled; max lead temperature 230°C at 1/16″ from case for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; forms reference return path in shunt regulator topologies |
| Cathode | Zener breakdown terminal / Regulation output node | Connected to higher-potential rail; delivers stable 110 V reference when reverse-biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables tighter parameter limits and improved long-term stability vs. non-passivated Zeners |
| 5 W steady-state power dissipation | Supports high-energy clamping without external heatsinking in compact axial layouts |
| Void-free plastic encapsulation | Provides environmental protection against moisture, dust, and corrosion in harsh enclosures |
| Corrosion-resistant, solderable leads | Ensures reliable through-hole assembly and IPC-compliant solder joint integrity |
Applications
| Industrial Power Supply Feedback | DC Bus Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converter secondary-side feedback networks. IC Role / Device Role / Timing Role: Shunt voltage reference providing error signal to optocoupler input. Use Value: 110 V nominal breakdown enables direct sensing of 100–120 VDC bus rails without resistive divider scaling. |
Use Scenario: Protecting IGBT gate drivers and bus monitoring ICs during regenerative braking surges. IC Role / Device Role / Timing Role: Fast-acting crowbar element diverting excess energy to ground. Use Value: 1000 A surge rating at 8.3 ms allows absorption of motor drive transients without degradation. |
| Programmable Reference Generator | High-Voltage Test Equipment Calibration |
Use Scenario: Building adjustable precision references via series/parallel Zener combinations in lab-grade power supplies. IC Role / Device Role / Timing Role: Primary voltage-setting element in multi-Zener reference stacks. Use Value: ±5% tolerance and low 12 Ω impedance ensure minimal drift and load-induced error in stacked configurations. |
Use Scenario: Calibrating insulation resistance testers and hipot equipment requiring traceable 100+ V reference points. IC Role / Device Role / Timing Role: Stable, repeatable breakdown source for metrology-grade voltage verification. Use Value: 200 °C max storage temperature and −65 °C min operating range support calibration lab environmental cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5379B | No "G" suffix; same electrical specs but unspecified RoHS status and halogen content | Acceptable where legacy compliance suffices; lacks guaranteed green material declaration | Select 1N5379BG when RoHS-6 and halogen-free certification are required for final product compliance |
| BZX85C110 | 1.3 W rating, TO-226AA package, 20 Ω ZzT @ 25 mA - lower power, higher impedance | Limited to low-power references; unsuitable for 5 W surge or continuous regulation | Choose only for space-constrained PCBs where 110 V reference is needed at <100 mW dissipation |
Compared with 1N5379B and BZX85C110, the 1N5379BG offers full 5 W capability, industry-standard axial form factor, and documented green compliance-making it the preferred choice for high-reliability industrial power regulation where thermal margin and regulatory traceability matter.
Availability
1N5379BG is available at Aetrix Electronics and suitable for industrial power supply feedback, DC bus overvoltage clamp, and high-voltage test equipment calibration requiring stable component supply and long-lifecycle support.
Supply support for 1N5379BG 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering high-performance analog, logic, discrete, and custom devices.
The 1N5379BG belongs to the 1N5333B Series of 5 W Surmetic™ 40 Zener regulators, designed specifically for robust voltage reference and overvoltage protection in industrial, automotive, and telecom power systems.
FAQ
What is the nominal zener voltage and tolerance of the 1N5379BG?
The 1N5379BG has a nominal zener voltage of 110 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 104.5 V and 115.5 V at the specified test current of 125 mA. This tolerance is guaranteed per JEDEC standards and applies across the full operating temperature range.
How much power can the 1N5379BG dissipate continuously?
The 1N5379BG is rated for 5 W steady-state power dissipation at a lead temperature (TL) of 75°C with 3/8″ lead length. Above 75°C, it must be derated at 40 mW/°C. Its maximum DC zener current is 1.4 A, calculated as 5 W ÷ 110 V, and reflects the upper limit for continuous operation without thermal runaway.
Does the 1N5379BG have surge current capability, and what is its rating?
Yes, the 1N5379BG supports a peak non-repetitive surge current of 1000 A at a pulse width of 8.3 ms, as defined in the datasheet's Figure 5. This rating enables use in transient voltage suppression applications such as AC line surge protection and motor drive snubbing, provided pulse repetition is limited per thermal recovery guidelines.
What is the package type and marking convention for the 1N5379BG?
The 1N5379BG uses an axial-lead, transfer-molded plastic package (Case 17), with cathode identified by a colored band. The marking "1N5379B" appears on the body; the "G" suffix denotes RoHS-6 and halogen-free compliance per onsemi's green initiative. Polarity is unambiguous: banded end is cathode.
Is the 1N5379BG suitable for high-temperature environments?
Yes, the 1N5379BG is rated for operation from −65 °C to +200 °C, making it suitable for under-hood automotive, downhole oil/gas, and industrial furnace control applications. Its silicon-oxide passivated junction and void-free plastic encapsulation maintain parameter stability across this full range when mounted per recommended lead-length and thermal guidelines.
1N5379BG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 83.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5379BG FAQ
1.How can I place an order for 1N5379BG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5379BG 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 1N5379BG reliable?
The price and inventory of 1N5379BG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5379BG is usually 5 days.
3.What payment methods are accepted for 1N5379BG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5379BG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5379BG?
1N5379BG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5379BG 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 1N5379BG?
For technical support, including 1N5379BG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5379BG requirements.
6.How does Aetrix verify that 1N5379BG is sourced from the original manufacturer or authorized distributors?
All 1N5379BG 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 1N5379BG meets industry standards.
7.What is the process for return or replacement of 1N5379BG?
All 1N5379BG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5379BG, 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 1N5379BG part is unused and in its original packaging.
Return procedure for 1N5379BG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5379BG Tags
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