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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

onsemi 1N5375BRLG

Name: 1N5375BRLG
Brand: onsemi
SKU: 1N5375BRLG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5375BRLG

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: Axial

Datasheet:: 1N5375BRLG.pdf

Description:: DIODE ZENER 82V 5W AXIAL

Quantity:: RFQ Add To RFQ list

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Inventory:35,920

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Product details

Overview

1N5375BRLG 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 65 mA test current, and 1.8 mA maximum leakage current at 62.2 V. It operates across −65 °C to +200 °C and delivers stable voltage regulation in power supply reference and overvoltage protection circuits.

For engineers reviewing the 1N5375BRLG datasheet, pinout, applications, or equivalent options, this device serves as a high-voltage, low-impedance, Pb-free Zener regulator suitable for precision DC reference, transient suppression, and feedback loop stabilization in industrial power converters and automotive control modules.

Technical Context

This Zener diode uses silicon-oxide passivated junction technology to achieve tight voltage tolerance (±5%), low dynamic impedance, and robust surge capability (up to 720 A peak surge current at 8.3 ms). Its thermal design supports junction-to-lead resistance of 25 °C/W at 3/8″ lead length, enabling reliable operation under sustained 5 W dissipation at TL = 25 °C.

The 1N5375BRLG exhibits a positive temperature coefficient above 6 V, with typical TC ≈ +0.085 %/°C near 82 V - critical for temperature-compensated reference designs. It is rated for non-repetitive surge currents up to 720 A and maintains ≤1.8 mA leakage at VR = 62.2 V, ensuring low standby loss in high-impedance bias networks.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	77.9 V (min) / 82 V (nom) / 86.1 V (max) - defines regulated output range under I_ZT = 65 mA
Power Dissipation (P_D)	5 W at T_L = 25 °C - sets maximum continuous DC power handling before derating
Zener Impedance (Z_ZT)	15 Ω max @ I_ZT = 65 mA - ensures minimal output voltage variation under load transients
Leakage Current (I_R)	1.8 mA max @ V_R = 62.2 V - guarantees low quiescent current in high-impedance reference paths
Surge Current (I_RM)	720 A peak @ 8.3 ms - enables robust clamping of short-duration line surges without failure
Operating Temperature	−65 °C to +200 °C - supports deployment in under-hood automotive, industrial motor drives, and aerospace power systems
ESD Rating	Class 3 (>16 kV HBM) - provides built-in ESD immunity during board handling and system integration

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, solderable up to 260 °C for 10 s at 1/16″ from case.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Zener cathode reference ground	Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator topology
Cathode	Zener breakdown terminal / regulated output node	Connected to unregulated input; sinks current to maintain fixed voltage drop across load when reverse-biased

Key Features

Feature	Design Value
Pb-Free construction	RoHS-compliant package (G suffix) with corrosion-resistant, readily solderable leads per J-STD-020
Tight voltage tolerance	±5% zener voltage spread ensures predictable regulation without post-manufacture trimming
Low dynamic impedance	15 Ω max at 65 mA enables <100 mV output shift under 100 mA load step - critical for analog feedback stability
High surge rating	720 A peak @ 8.3 ms allows use as primary overvoltage clamp in 48 V telecom and EV auxiliary supplies
Wide temperature range	−65 °C to +200 °C operation supports engine-control units and downhole instrumentation without derating

Applications

Industrial Power Supply Reference	Automotive Overvoltage Protection
Use Scenario: Precision voltage reference in isolated flyback converter feedback network. IC Role / Device Role / Timing Role: Shunt regulator providing stable 82 V reference to optocoupler input, enabling accurate secondary-side regulation. Use Value: Low 15 Ω Z_ZT minimizes error from optocoupler LED current variation, improving cross-regulation across multiple outputs.	Use Scenario: Clamp circuit protecting 12 V/24 V control electronics from load-dump transients. IC Role / Device Role / Timing Role: High-energy Zener shunt absorbing >100 J surges during alternator disconnection events. Use Value: 720 A surge rating and 5 W steady-state dissipation enable single-device protection without external TVS stacking.
Test Equipment Voltage Standard	LED Driver Open-Circuit Protection
Use Scenario: Calibration reference in portable multimeters and benchtop power supplies. IC Role / Device Role / Timing Role: Stable 82 V reference source for DAC output scaling and ADC full-scale adjustment. Use Value: ±5% tolerance and <0.085 %/°C TC ensure <0.5% total error over 0–50 °C ambient - meeting Class II meter specs.	Use Scenario: Fail-safe open-circuit protection in constant-current LED drivers for street lighting. IC Role / Device Role / Timing Role: Zener placed across LED string to conduct excess current if string opens, preventing driver IC damage. Use Value: 1.8 mA leakage at 62.2 V ensures negligible standby loss while 82 V nominal clamping matches 70–90 V LED string V_f ranges.

Industrial Power Supply Reference

Automotive Overvoltage Protection

Use Scenario: Precision voltage reference in isolated flyback converter feedback network.

IC Role / Device Role / Timing Role: Shunt regulator providing stable 82 V reference to optocoupler input, enabling accurate secondary-side regulation.

Use Value: Low 15 Ω Z_ZT minimizes error from optocoupler LED current variation, improving cross-regulation across multiple outputs.

Use Scenario: Clamp circuit protecting 12 V/24 V control electronics from load-dump transients.

IC Role / Device Role / Timing Role: High-energy Zener shunt absorbing >100 J surges during alternator disconnection events.

Use Value: 720 A surge rating and 5 W steady-state dissipation enable single-device protection without external TVS stacking.

Test Equipment Voltage Standard

LED Driver Open-Circuit Protection

Use Scenario: Calibration reference in portable multimeters and benchtop power supplies.

IC Role / Device Role / Timing Role: Stable 82 V reference source for DAC output scaling and ADC full-scale adjustment.

Use Value: ±5% tolerance and <0.085 %/°C TC ensure <0.5% total error over 0–50 °C ambient - meeting Class II meter specs.

Use Scenario: Fail-safe open-circuit protection in constant-current LED drivers for street lighting.

IC Role / Device Role / Timing Role: Zener placed across LED string to conduct excess current if string opens, preventing driver IC damage.

Use Value: 1.8 mA leakage at 62.2 V ensures negligible standby loss while 82 V nominal clamping matches 70–90 V LED string V_f ranges.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5375BRL	Same electrical specs but SnPb lead finish (non-Pb-free)	Not compliant with RoHS or China RoHS; unsuitable for export to EU/China markets	Select only for legacy repair or non-regulated internal assemblies where Pb exemption applies
BZX85C82	1.3 W rating, 30 Ω Z_ZT, 500 mA I_ZM; TO-204AA metal case	Limited to low-power references; lacks 720 A surge capability and wide temp range	Use only in cost-sensitive, low-stress consumer applications where 5 W headroom is unnecessary

Compared with 1N5375BRLG, the 1N5375BRL requires Pb-containing solder processes and fails modern environmental compliance, while BZX85C82 sacrifices surge robustness, thermal margin, and leakage performance - making 1N5375BRLG the sole choice for high-reliability 82 V regulation in harsh environments.

Availability

1N5375BRLG is available at Aetrix Electronics and suitable for industrial power supplies, automotive control modules, and test equipment requiring stable component supply with full RoHS compliance and traceable sourcing.

Supply support for 1N5375BRLG 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 specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The 1N53 Series is part of onsemi's Surmetic™ 40 Zener family, engineered for high-power, high-reliability voltage regulation in demanding environments where thermal stability, surge resilience, and long-term parametric consistency are essential.

FAQ

What is the zener voltage tolerance of the 1N5375BRLG?

The 1N5375BRLG has a ±5% zener voltage tolerance, meaning its nominal 82 V rating spans 77.9 V (minimum) to 86.1 V (maximum) at I_ZT = 65 mA and T_A = 25 °C. This tight tolerance eliminates need for external trimming in most reference applications and is guaranteed per JEDEC standard for B-suffix devices.

Can the 1N5375BRLG be used in surface-mount designs?

No - the 1N5375BRLG is an axial-lead device in Case 017AA plastic package and is not compatible with SMT reflow or pick-and-place processes. It requires through-hole mounting with 3/8″ lead length for thermal management. For SMT alternatives, consider onsemi's NSZ82-2 or similar SOD-123 Zeners - but note their lower power rating (1 W) and different impedance profile.

What is the maximum allowable surge current for the 1N5375BRLG?

The 1N5375BRLG supports a peak non-repetitive surge current of 720 A at 8.3 ms pulse width, as specified in the datasheet. This value is derived from its 5 W power rating and thermal mass, and must not be exceeded even once without verifying junction temperature rise using Figure 4's transient thermal resistance curves.

How does temperature affect the zener voltage of the 1N5375BRLG?

The 1N5375BRLG exhibits a positive temperature coefficient of approximately +0.085 %/°C near 82 V, meaning its zener voltage increases by ~70 mV per °C rise in junction temperature. This behavior is confirmed in Figure 3 of the datasheet and must be factored into precision reference designs operating beyond 25 °C ambient.

Is the 1N5375BRLG RoHS-compliant?

Yes - the "G" suffix in 1N5375BRLG explicitly denotes a Pb-free, RoHS-compliant package per onsemi's documentation. The device meets EU RoHS Directive 2011/65/EU and China RoHS GB/T 26572-2011, with lead content below 1000 ppm and all other restricted substances within limits.

1N5375BRLG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

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

1N5375BRLG FAQ

1.How can I place an order for 1N5375BRLG through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5375BRLG 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 1N5375BRLG reliable?

The price and inventory of 1N5375BRLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5375BRLG is usually 5 days.

3.What payment methods are accepted for 1N5375BRLG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5375BRLG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5375BRLG?

1N5375BRLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5375BRLG 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 1N5375BRLG?

For technical support, including 1N5375BRLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5375BRLG requirements.

6.How does Aetrix verify that 1N5375BRLG is sourced from the original manufacturer or authorized distributors?

All 1N5375BRLG 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 1N5375BRLG meets industry standards.

7.What is the process for return or replacement of 1N5375BRLG?

All 1N5375BRLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5375BRLG, 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 1N5375BRLG part is unused and in its original packaging.

Return procedure for 1N5375BRLG:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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