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

onsemi 1N5362B

Name: 1N5362B
Brand: onsemi
SKU: 1N5362B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5362B

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: T-18, Axial

Datasheet:: 1N5362B.pdf

Description:: DIODE ZENER 28V 5W AXIAL

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Product details

Overview

1N5362B from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 28 V, ±5% tolerance, maximum zener impedance of 50 Ω at 6 mA test current, and surge rating of 170 A at 8.3 ms. It operates across −65 °C to +200 °C and is used for precision voltage regulation in DC power supply feedback loops, overvoltage protection circuits, and reference voltage generation.

For engineers reviewing the 1N5362B datasheet, pinout, applications, or equivalent options, key selection criteria include its 28 V nominal zener voltage, 50 Ω dynamic impedance at IZT = 6 mA, 0.6 mA leakage current at VR = 21.2 V, thermal resistance of 25 °C/W (junction-to-lead), and Pb-free Surmetic 40 plastic package compatibility with wave and reflow soldering.

Technical Context

The 1N5362B employs a silicon-oxide passivated junction for stable zener breakdown and low leakage. Its 28 V nominal voltage falls within the 11–75 V temperature coefficient range (positive TC), exhibiting +0.085 %/°C typical drift above 25 °C.

Designed for steady-state dissipation up to 5 W at TL = 25 °C with 3/8″ lead length, it derates linearly at 40 mW/°C above ambient and supports non-repetitive surge currents up to 170 A for 8.3 ms pulses - validated per Figure 5 of the onsemi datasheet.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	26.6 V min / 28 V nom / 29.4 V max @ I_ZT = 6 mA - defines regulated output voltage window under standard test conditions
Zener Impedance (Z_ZT)	50 Ω max @ I_ZT = 6 mA - determines regulation stiffness and output voltage variation under load changes
Max DC Zener Current (I_ZM)	130 mA - derived from P_D/V_Z(min) = 5 W / 26.6 V, limiting continuous operating current
Leakage Current (I_R)	0.6 mA max @ V_R = 21.2 V - ensures minimal shunt loss in standby or high-impedance bias networks
Surge Current (I_RM)	170 A peak @ 8.3 ms - enables transient overvoltage clamping without failure in power rail protection
Junction-to-Lead Thermal Resistance (θ_JL)	25 °C/W - governs temperature rise from junction to lead under 5 W dissipation with 3/8″ lead length
Operating Temperature Range	−65 °C to +200 °C - supports deployment in automotive engine compartments and industrial control enclosures

Pinout & Package

Package: Axial-lead Surmetic 40 plastic case (JEDEC Case 017AA), void-free transfer-molded thermosetting material, cathode indicated by color band. Dimensions: body length 8.38–8.89 mm, body diameter 3.30–3.68 mm, lead diameter ≤1.27 mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Zener cathode reference node	Connected to lower-potential side of regulated circuit; reverse-biased during regulation
Cathode	Zener breakdown terminal / voltage reference output	Connected to higher-potential side; delivers stable 28 V reference when reverse-biased above V_Z

Key Features

Feature	Design Value
ESD robustness	Class 3 (>16 kV HBM) - eliminates need for external ESD protection in board-level handling and assembly
Surge withstand capability	180 W peak @ 8.3 ms - sustains lightning-induced transients and inductive switch-off spikes without degradation
Tight parameter guarantees	Six electrical parameters fully tested and binned - ensures predictable performance without incoming inspection screening
Pb-free compliance	RoHS-compliant Surmetic 40 package - meets global environmental regulations without compromising thermal or mechanical reliability
Stable temperature coefficient	+0.085 %/°C typical (11–75 V range) - enables accurate voltage references across wide ambient ranges

Applications

DC Power Supply Feedback Regulation	Overvoltage Protection Clamp
Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback paths using optocoupler-coupled error amplifiers. IC Role / Device Role / Timing Role: Zener reference element providing precise 28 V threshold for TL431-type shunt regulator bias or direct optocoupler LED drive. Use Value: 50 Ω Z_ZT minimizes output voltage deviation under line/load transients; ±5% V_Z tolerance aligns with industry-standard feedback accuracy requirements.	Use Scenario: Protecting 24 V industrial PLC I/O modules against 48 V bus faults or inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts only when input exceeds 29.4 V, diverting surge energy to ground before downstream ICs are damaged. Use Value: 170 A 8.3 ms surge rating absorbs IEC 61000-4-5 Level 4 surges; 25 °C/W θ_JL enables rapid heat dissipation into PCB copper pour or chassis mount.
Programmable Reference Voltage Generator	Temperature-Stable Bias Network
Use Scenario: Building adjustable 28 V reference for analog sensor signal conditioning or ADC reference scaling in test equipment. IC Role / Device Role / Timing Role: Primary voltage reference source in series with precision resistors to set gain or offset in op-amp-based instrumentation circuits. Use Value: Low 0.6 mA leakage at 21.2 V ensures minimal current draw from high-impedance divider networks; oxide-passivated junction ensures long-term V_Z stability.	Use Scenario: Providing bias current to bipolar transistor amplifiers in automotive engine control units where ambient temperature swings exceed 150 °C. IC Role / Device Role / Timing Role: Zener-biased current source establishing stable quiescent point despite extreme thermal cycling. Use Value: +0.085 %/°C TC and −65 °C to +200 °C operating range maintain <±3% bias drift over full automotive temperature profile; 200 °C pulsed rating accommodates short-duration hot spots.

DC Power Supply Feedback Regulation

Overvoltage Protection Clamp

Use Scenario: Stabilizing output voltage in isolated flyback or forward converter feedback paths using optocoupler-coupled error amplifiers.

IC Role / Device Role / Timing Role: Zener reference element providing precise 28 V threshold for TL431-type shunt regulator bias or direct optocoupler LED drive.

Use Value: 50 Ω Z_ZT minimizes output voltage deviation under line/load transients; ±5% V_Z tolerance aligns with industry-standard feedback accuracy requirements.

Use Scenario: Protecting 24 V industrial PLC I/O modules against 48 V bus faults or inductive kickback from solenoid drivers.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts only when input exceeds 29.4 V, diverting surge energy to ground before downstream ICs are damaged.

Use Value: 170 A 8.3 ms surge rating absorbs IEC 61000-4-5 Level 4 surges; 25 °C/W θ_JL enables rapid heat dissipation into PCB copper pour or chassis mount.

Programmable Reference Voltage Generator

Temperature-Stable Bias Network

Use Scenario: Building adjustable 28 V reference for analog sensor signal conditioning or ADC reference scaling in test equipment.

IC Role / Device Role / Timing Role: Primary voltage reference source in series with precision resistors to set gain or offset in op-amp-based instrumentation circuits.

Use Value: Low 0.6 mA leakage at 21.2 V ensures minimal current draw from high-impedance divider networks; oxide-passivated junction ensures long-term V_Z stability.

Use Scenario: Providing bias current to bipolar transistor amplifiers in automotive engine control units where ambient temperature swings exceed 150 °C.

IC Role / Device Role / Timing Role: Zener-biased current source establishing stable quiescent point despite extreme thermal cycling.

Use Value: +0.085 %/°C TC and −65 °C to +200 °C operating range maintain <±3% bias drift over full automotive temperature profile; 200 °C pulsed rating accommodates short-duration hot spots.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5362	Same electrical specs but ±10% V_Z tolerance (vs. ±5% for 1N5362B); no "B" suffix denotes wider tolerance grade	Acceptable where cost sensitivity outweighs precision; unsuitable for closed-loop feedback requiring tight regulation	Select 1N5362B when V_Z stability and low Z_ZT are critical; choose 1N5362 only for non-critical biasing
BZX85C27	27 V nominal, ±5%, 1.3 W rating (vs. 5 W), DO-41 package - lower power, smaller footprint, higher Z_ZT (~70 Ω)	Limited to low-power applications; cannot replace 1N5362B in 5 W dissipation scenarios without thermal derating or parallel devices	Use BZX85C27 only in space-constrained, <1 W designs; retain 1N5362B for industrial-grade power regulation

Compared with 1N5362 and BZX85C27, the 1N5362B delivers tighter voltage tolerance, higher surge immunity, and superior thermal management - making it the preferred choice for mission-critical 28 V regulation where reliability and long-term stability are mandatory.

Availability

1N5362B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with guaranteed long-term continuity and RoHS-compliant sourcing.

Supply support for 1N5362B 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 management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The 1N53 Series belongs to onsemi's legacy Zener diode product line, engineered for high-reliability voltage regulation in harsh environments - emphasizing robust surge handling, wide temperature operation, and process-controlled parametric consistency.

FAQ

What is the nominal zener voltage and tolerance of the 1N5362B?

The 1N5362B has a nominal zener voltage of 28 V with a tolerance of ±5%, meaning its actual zener voltage falls between 26.6 V and 29.4 V when measured at I_ZT = 6 mA and T_A = 25 °C. This tight tolerance is specified per JEDEC standards and confirmed in the onsemi datasheet revision 19, page 3.

What is the maximum power dissipation and thermal derating behavior of the 1N5362B?

The 1N5362B is rated for 5 W steady-state power dissipation at T_L = 25 °C with 3/8″ lead length. Above 25 °C, it derates linearly at 40 mW/°C - reducing to 4.0 W at 50 °C and 3.0 W at 75 °C. This derating curve is defined in the Maximum Ratings table on page 1 of the onsemi datasheet.

How does the 1N5362B perform under surge conditions?

The 1N5362B supports a peak non-repetitive surge current of 170 A for an 8.3 ms square-wave pulse, corresponding to 180 W peak power. This capability is validated per Figure 5 in the onsemi datasheet and enables reliable clamping of IEC 61000-4-5-compliant transients without device failure.

What is the zener impedance of the 1N5362B and why does it matter?

The 1N5362B has a maximum zener impedance (Z_ZT) of 50 Ω at I_ZT = 6 mA. This low dynamic impedance ensures minimal output voltage variation under changing load currents - critical for maintaining regulation accuracy in feedback circuits and reference generators where stability is essential.

Is the 1N5362B RoHS-compliant and what package type does it use?

Yes, the 1N5362B is RoHS-compliant and supplied in a Pb-free Surmetic 40 axial-lead plastic package (JEDEC Case 017AA). The "G" suffix in ordering codes (e.g., 1N5362BG) explicitly denotes Pb-free construction, and the package meets soldering requirements up to 260 °C for 10 seconds at 1/16″ from the case.

1N5362B Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: T-18, Axial

Packaging:: Bulk

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 28 V

Tolerance:: ±5%

Power - Max:: 5 W

Impedance (Max) (Zzt):: 6 Ohms

Current - Reverse Leakage @ Vr:: 500 nA @ 21.2 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

1N5362B FAQ

1.How can I place an order for 1N5362B through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5362B 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 1N5362B reliable?

The price and inventory of 1N5362B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5362B is usually 5 days.

3.What payment methods are accepted for 1N5362B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5362B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5362B?

1N5362B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5362B 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 1N5362B?

For technical support, including 1N5362B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5362B requirements.

6.How does Aetrix verify that 1N5362B is sourced from the original manufacturer or authorized distributors?

All 1N5362B 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 1N5362B meets industry standards.

7.What is the process for return or replacement of 1N5362B?

All 1N5362B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5362B, 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 1N5362B part is unused and in its original packaging.

Return procedure for 1N5362B:

1.Submit a request within 90 days.

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

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