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onsemi 1N5376BRLG
- Part No.:
- 1N5376BRLG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5376BRLG.pdf
- Description:
- DIODE ZENER 87V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,125
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Product details
Overview
1N5376BRLG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 82 V, ±5% tolerance, 20 Ω maximum zener impedance at 1 mA test current, and 0.5 mA maximum leakage current at 65.6 V reverse voltage. It operates across −65 °C to +200 °C and delivers stable voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N5376BRLG datasheet, pinout, applications, or equivalent options, this device serves as a precision DC voltage reference and clamping element in industrial power converters, automotive control modules, and instrumentation front-ends where tight regulation and high surge immunity are required.
Technical Context
This Zener diode uses silicon-oxide passivated junction technology to achieve low leakage, stable temperature coefficient (≈+0.095 %/°C above 6.2 V), and robust ESD resilience (Class 3, >16 kV HBM). Its thermal design relies on lead-to-ambient conduction, with junction-to-lead resistance of 25 °C/W at 3/8″ lead length.
The device supports non-repetitive surge currents up to 430 A at 8.3 ms pulse width and maintains regulation within ±5% across its rated power envelope. Voltage regulation is verified at both 10% and 50% of IZM, ensuring consistency under varying load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 82 V nominal, min 77.9 V / max 86.1 V - defines regulated output voltage under 1 mA test current |
| Power Dissipation (PD) | 5 W at TL = 25 °C - sets maximum continuous DC power handling before thermal derating |
| Zener Impedance (ZZT) | 20 Ω max @ IZT = 1 mA - determines regulation stiffness and AC ripple rejection capability |
| Leakage Current (IR) | 0.5 mA max @ VR = 65.6 V - ensures minimal standby current in high-impedance bias networks |
| Surge Current (IRM) | 430 A peak @ 8.3 ms - enables transient overvoltage suppression without failure |
| Operating Temperature | −65 °C to +200 °C - supports deployment in under-hood automotive and industrial environments |
| ESD Rating | Class 3 (>16 kV) per HBM - provides robust handling during board assembly and field service |
Pinout & Package
Package: Axial-lead, transfer-molded plastic (Case 017AA), Pb-free, 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 | Connected to lower-potential node in reverse-biased regulation configuration |
| Cathode | Zener breakdown terminal | Marked with band; connected to higher-potential node to enable controlled avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Guarantees tight regulation window without post-manufacture trimming |
| 25 °C/W junction-to-lead thermal resistance | Enables direct heat sinking via PCB traces or chassis mounting without heatsink |
| 180 W surge rating at 8.3 ms | Supports IEC 61000-4-5 level 3 surge immunity in AC/DC front-ends |
| Silicon-oxide passivated junction | Reduces surface leakage and improves long-term parameter stability vs. metallized junctions |
| Pb-free RoHS-compliant construction | Meets global environmental compliance requirements for industrial and automotive production |
Applications
| Industrial Power Supply Feedback | Automotive Load Dump Protection |
|---|---|
Use Scenario: Regulates error amplifier reference in isolated flyback or forward converter feedback network. IC Role / Device Role / Timing Role: Zener voltage reference for TL431 or optocoupler biasing circuit. Use Value: Maintains ±1% output voltage accuracy across line/load/temperature with <20 Ω dynamic impedance. | Use Scenario: Clamps transients induced by alternator load dump events in 12 V vehicle systems. IC Role / Device Role / Timing Role: Standby overvoltage clamp protecting microcontroller I/O and sensor interfaces. Use Value: Absorbs 430 A surges at 8.3 ms without degradation, meeting ISO 7637-2 Pulse 5a requirements. |
| Test Equipment Reference Source | Industrial PLC Input Protection |
Use Scenario: Provides stable 82 V reference for calibrated voltage source calibration routines. IC Role / Device Role / Timing Role: Precision DC reference in metrology-grade bench instruments. Use Value: Delivers <0.095 %/°C tempco and <0.5 mA leakage, enabling sub-0.1% absolute accuracy. | Use Scenario: Protects digital input channels from accidental 100 V transients in factory automation controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input terminals. Use Value: Withstands repeated 100 V/100 ms transients while maintaining <5 W steady-state dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5376B | Same electrical specs but SnPb lead finish; not RoHS-compliant | Acceptable only in legacy non-RoHS production or repair contexts | Select 1N5376BRLG for new designs requiring Pb-free compliance and Class 3 ESD robustness |
| MMBZ5276B | Surface-mount SOT-23 package; 82 V, 0.5 W rating; 30 Ω ZZT | Limited to low-power signal-level clamping; unsuitable for 5 W regulation | Choose MMBZ5276B only for space-constrained PCBs where power dissipation ≤0.5 W |
Compared with 1N5376B (SnPb) and MMBZ5276B (SMT, 0.5 W), the 1N5376BRLG uniquely combines 5 W axial-leaded power handling, Pb-free compliance, and 20 Ω low-impedance regulation-making it the sole option for high-reliability, through-hole, RoHS-compliant 82 V reference designs.
Availability
1N5376BRLG is available at Aetrix Electronics and suitable for industrial power supplies, automotive control units, and test equipment requiring stable component supply with full traceability and lifecycle continuity.
Supply support for 1N5376BRLG 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 supplier of energy-efficient semiconductor solutions, specializing in power management, analog, sensors, and logic devices for automotive, industrial, and cloud infrastructure markets.
The 1N53 Series is part of onsemi's Surmetic™ 40 Zener family, engineered for high-reliability voltage regulation in harsh environments-designed to replace older 1N47xx devices with tighter tolerances, superior surge immunity, and extended temperature range.
FAQ
What is the exact zener voltage tolerance for 1N5376BRLG?
The 1N5376BRLG has a guaranteed ±5% zener voltage tolerance, meaning its nominal 82 V rating falls between 77.9 V and 86.1 V when measured at IZT = 1 mA and TA = 25 °C. This tolerance is defined per JEDEC standard and applies to all B-suffix devices in the 1N53 series.
Can 1N5376BRLG be used in surface-mount designs?
No, the 1N5376BRLG is an axial-lead through-hole device in Case 017AA plastic package and is not compatible with SMT reflow or pick-and-place processes. For surface-mount alternatives, consider the MMBZ5276B (SOT-23, 0.5 W) or SMAZ82 (DO-214AC, 1 W), though neither matches the 5 W rating or 20 Ω impedance of the 1N5376BRLG.
What is the maximum allowable surge current for 1N5376BRLG?
The 1N5376BRLG supports a maximum non-repetitive surge current of 430 A at an 8.3 ms pulse width, as specified in the onsemi datasheet. This value is derived from Figure 5 and validated under standardized test conditions with proper lead mounting per Note 4.
How does temperature affect the zener voltage of 1N5376BRLG?
The 1N5376BRLG exhibits a positive temperature coefficient of approximately +0.095 %/°C above 6.2 V, meaning its zener voltage increases linearly with junction temperature. At 82 V, this equates to ~78 mV/°C drift, which must be accounted for in precision reference designs operating beyond 25 °C ambient.
Is 1N5376BRLG suitable for automotive under-hood applications?
Yes, the 1N5376BRLG is rated for operation from −65 °C to +200 °C and meets ISO 7637-2 Pulse 5a load dump requirements when properly mounted. Its 430 A surge rating and Class 3 ESD immunity make it appropriate for engine control units, battery management systems, and other under-hood electronics where thermal and transient stress are severe.
1N5376BRLG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 87 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 75 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 66 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
1N5376BRLG FAQ
1.How can I place an order for 1N5376BRLG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5376BRLG 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 1N5376BRLG reliable?
The price and inventory of 1N5376BRLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5376BRLG is usually 5 days.
3.What payment methods are accepted for 1N5376BRLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5376BRLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5376BRLG?
1N5376BRLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5376BRLG 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 1N5376BRLG?
For technical support, including 1N5376BRLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5376BRLG requirements.
6.How does Aetrix verify that 1N5376BRLG is sourced from the original manufacturer or authorized distributors?
All 1N5376BRLG 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 1N5376BRLG meets industry standards.
7.What is the process for return or replacement of 1N5376BRLG?
All 1N5376BRLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5376BRLG, 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 1N5376BRLG part is unused and in its original packaging.
Return procedure for 1N5376BRLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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