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onsemi 1N5375B
- Part No.:
- 1N5375B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5375B.pdf
- Description:
- DIODE ZENER 82V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,184
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Product details
Overview
1N5375B from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 82 V, ±5% tolerance, 15 Ω maximum zener impedance at 1 mA test current, and 1.8 V reverse leakage current at 62.2 V. It delivers precise voltage regulation in high-voltage power supply feedback loops, overvoltage protection circuits, and reference voltage generation for industrial instrumentation.
For engineers reviewing the 1N5375B datasheet, pinout, applications, or equivalent options, key selection criteria include its 82 V nominal zener voltage, 720 mA maximum DC zener current, 15 Ω dynamic impedance at IZT = 1 mA, surge capability of 58 A at 8.3 ms, and thermal resistance of 25 °C/W junction-to-lead.
Technical Context
The 1N5375B operates as a silicon-oxide passivated junction Zener regulator, optimized for stable DC voltage reference under steady-state and transient conditions. Its design supports tight voltage regulation (±5%) across temperature and load variations, with ESD robustness exceeding 16 kV per Human Body Model.
It features a low-impedance zener knee at 1 mA test current and exhibits a positive temperature coefficient typical of 82–200 V devices-approximately +0.08 %/°C-enabling predictable drift behavior in high-temperature environments up to +150 °C continuous operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 77.9 V (min) to 86.1 V (max) at IZT = 1 mA - defines regulation window for precision reference use |
| Power Dissipation (PD) | 5 W @ TL = 25°C - sets maximum continuous power handling with 3/8″ lead length |
| Zener Impedance (ZZT) | 15 Ω max @ IZT = 1 mA - ensures minimal output voltage variation under load transients |
| Max DC Zener Current (IZM) | 720 mA - derived from PD/VZ(min); limits safe operating current in shunt regulator designs |
| Surge Current (IR) | 58 A peak @ 8.3 ms - enables transient overvoltage clamping without failure |
| Reverse Leakage (IR) | 1.8 μA @ VR = 62.2 V - confirms low standby power loss in high-impedance bias networks |
| Junction-to-Lead RθJL | 25 °C/W - determines thermal rise above lead temperature during sustained conduction |
Pinout & Package
Package: Axial-lead, transfer-molded plastic (Case 017AA), cathode indicated by band. Dimensions: 8.38–8.89 mm length × 3.30–3.68 mm diameter; leads 25.4–31.75 mm long.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground node | Connected to system ground or lower-potential rail in shunt regulator configuration |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input voltage source via series resistor; provides stable 82 V reference point |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables stable long-term voltage regulation and improved reliability vs. non-passivated Zeners |
| ESD rating >16 kV (HBM) | Supports handling and assembly in standard electronics manufacturing without special ESD controls |
| Surge rating up to 180 W @ 8.3 ms | Provides robust transient immunity in line-powered systems exposed to lightning or switching surges |
| Pb-free package (RoHS compliant) | Meets global environmental compliance requirements for industrial and automotive applications |
| Tight ±5% zener voltage tolerance | Reduces need for external trimming in precision reference and feedback circuits |
Applications
| Industrial Power Supply Feedback | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or forward converter secondary-side feedback loop. IC Role / Device Role / Timing Role: Zener reference element providing stable 82 V threshold to optocoupler input circuit. Use Value: Maintains ±1% output regulation accuracy despite input line and load variations due to low 15 Ω dynamic impedance. |
Use Scenario: Clamping transient spikes on 72 V DC bus in telecom or railway traction control systems. IC Role / Device Role / Timing Role: Shunt protection device that conducts only above 77.9 V to divert surge energy. Use Value: Absorbs 58 A surge at 8.3 ms without degradation, preventing downstream MOSFET or controller damage. |
| High-Voltage Reference Generator | Programmable Threshold Detector |
Use Scenario: Generating precise 82 V reference for analog-to-digital conversion in battery management systems monitoring 96 V Li-ion stacks. IC Role / Device Role / Timing Role: Stable voltage reference for comparator input or ADC reference divider network. Use Value: Delivers <1.8 μA leakage at 62.2 V, minimizing error in high-impedance sensing paths. |
Use Scenario: Setting trip point for undervoltage/overvoltage lockout in 48–110 V DC industrial controllers. IC Role / Device Role / Timing Role: Zener-based threshold element triggering shutdown when input exceeds 82 V nominal. Use Value: ±5% tolerance ensures deterministic activation margin without requiring calibration or trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5374B | Nominal VZ = 75 V (vs. 82 V); 63 Ω ZZT @ 1 mA (vs. 15 Ω) | Suitable for 72 V bus protection where tighter impedance is less critical | Select when lower voltage threshold and relaxed dynamic regulation are acceptable |
| 1N5376B | Nominal VZ = 87 V; 12 Ω ZZT @ 1 mA; 750 mA IZM | Better suited for higher-voltage reference with slightly improved impedance | Choose for 87 V systems needing marginally lower impedance and same power class |
Compared with 1N5375B, the 1N5374B offers lower regulation voltage but higher impedance, reducing precision in feedback loops; the 1N5376B provides higher voltage and marginally better impedance, making it preferable for 87 V references where tighter regulation is required.
Availability
1N5375B is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and high-voltage reference generators requiring stable component supply and RoHS-compliant packaging.
Supply support for 1N5375B 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The 1N53 Series is part of onsemi's legacy Zener portfolio designed specifically for high-reliability, 5 W axial-lead voltage regulation in harsh-environment power systems.
FAQ
What is the nominal zener voltage of the 1N5375B and how tightly is it specified?
The 1N5375B has a nominal zener voltage of 82 V, with a guaranteed range of 77.9 V (minimum) to 86.1 V (maximum) at 1 mA test current. This ±5% tolerance is JEDEC-standard for B-suffix devices and ensures predictable regulation performance without post-manufacturing sorting or trimming.
Can the 1N5375B be used in surface-mount designs?
No-the 1N5375B is exclusively an axial-lead through-hole device in Case 017AA plastic package. It is not available in SMD variants. For surface-mount equivalents, engineers should consider onsemi's NSZ series or other manufacturer's SOD-123/SMA packages with comparable 82 V ratings.
What is the maximum allowable surge current for the 1N5375B and under what conditions?
The 1N5375B supports a peak non-repetitive surge current of 58 A at 8.3 ms pulse width, as specified in the onsemi datasheet. This rating assumes single-event, square-wave conditions at TA = 25°C and validates its use in transient overvoltage suppression applications such as DC bus clamping.
How does thermal derating affect the 1N5375B's power dissipation capability?
The 1N5375B is rated for 5 W at TL = 25°C with 3/8″ lead length, derating linearly at 40 mW/°C above that temperature. At 75°C lead temperature, its usable power drops to 3 W. Effective heat sinking via lead termination is essential to maintain regulation stability in continuous operation.
Is the 1N5375B RoHS compliant and what does the 'G' suffix indicate?
Yes-the 1N5375B is Pb-free and RoHS compliant. The 'G' suffix in ordering codes (e.g., 1N5375BG) explicitly denotes the Pb-free version. All standard 1N5375B units supplied by onsemi since Rev. 19 (July 2024) meet RoHS Directive 2011/65/EU requirements.
1N5375B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 82 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 65 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 62.2 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
1N5375B FAQ
1.How can I place an order for 1N5375B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5375B 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 1N5375B reliable?
The price and inventory of 1N5375B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5375B is usually 5 days.
3.What payment methods are accepted for 1N5375B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5375B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5375B?
1N5375B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5375B 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 1N5375B?
For technical support, including 1N5375B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5375B requirements.
6.How does Aetrix verify that 1N5375B is sourced from the original manufacturer or authorized distributors?
All 1N5375B 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 1N5375B meets industry standards.
7.What is the process for return or replacement of 1N5375B?
All 1N5375B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5375B, 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 1N5375B part is unused and in its original packaging.
Return procedure for 1N5375B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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