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

onsemi 1N5336BRL

Name: 1N5336BRL
Brand: onsemi
SKU: 1N5336BRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5336BRL

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: T-18, Axial

Datasheet:: 1N5336BRL.pdf

Description:: DIODE ZENER 4.3V 5W AXIAL

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Product details

Overview

1N5336BRL from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 4.3 V, ±5% tolerance, 290 Ω maximum zener impedance at 2 mA test current, and 0.49 µA maximum leakage current at 3.47 V. It operates across −65°C to +200°C and delivers stable voltage regulation in low-power DC supply rails, reference circuits, and overvoltage protection stages.

For engineers reviewing the 1N5336BRL datasheet, pinout, applications, or equivalent options, this device serves as a precision 4.3 V shunt regulator in space-constrained industrial power supplies, analog sensor biasing networks, and microcontroller reset circuitry where thermal stability and surge resilience are critical.

Technical Context

This Zener diode uses silicon-oxide passivated junction technology to achieve tight voltage tolerance (±5%), low dynamic impedance, and high ESD robustness (Class 3, >16 kV HBM). Its axial lead, transfer-molded plastic package (Case 017AA) ensures corrosion resistance and solderability at 260°C for 10 seconds.

The device supports steady-state dissipation of 5 W at 25°C with 40 mW/°C derating above ambient, and withstands non-repetitive 8.3 ms surges up to 1100 A - validated at its nominal 4.3 V zener point and defined by I_ZM = 1100 mA maximum DC zener current.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	4.3 V nominal, 4.09–4.52 V range; enables precise 4.3 V shunt regulation under 2 mA test current
Power Rating	5 W at T_L = 25°C; supports continuous regulation in compact linear supplies without forced cooling
Zener Impedance (Z_ZT)	290 Ω max @ I_ZT = 2 mA; ensures minimal output voltage variation under load transients
Leakage Current (I_R)	0.49 µA max @ V_R = 3.47 V; maintains low quiescent current in battery-backed or ultra-low-power systems
Surge Current (I_R)	1100 A peak @ 8.3 ms; provides robust transient suppression against EFT and lightning-induced spikes
Thermal Resistance (θ_JL)	25 °C/W junction-to-lead; allows direct thermal path to PCB copper or heatsink via 3/8″ lead length
Operating Temperature	−65°C to +200°C; rated for under-hood automotive, industrial motor controls, and downhole electronics

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 node	Connected to lower-potential side of regulated rail; forms reference ground return path in shunt configuration
Cathode	Zener breakdown terminal / voltage regulation node	Connected to higher-potential input rail; clamps voltage to 4.3 V when reverse-biased beyond breakdown threshold

Key Features

Feature	Design Value
±5% Zener voltage tolerance	Guarantees 4.09–4.52 V regulation window without post-manufacturing trimming
ESD rating >16 kV (HBM)	Survives handling and board assembly without external protection components
Surge rating 1100 A @ 8.3 ms	Replaces discrete TVS in cost-sensitive 4.3 V rail protection without derating penalties
Silicon-oxide passivated junction	Delivers stable long-term V_Z drift and low noise in analog reference applications
Pb-free compliant (G suffix)	Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow requirements

Applications

Industrial Power Monitoring	Microcontroller Reset Circuit
Use Scenario: Monitoring 5 V DC bus in PLC I/O modules using resistive divider into ADC input. IC Role / Device Role / Timing Role: Zener reference diode providing stable 4.3 V clamp to protect ADC input from overvoltage during bus transients. Use Value: Prevents ADC saturation and latch-up while maintaining <0.5 µA loading on the sensing network.	Use Scenario: Generating clean reset signal for ARM Cortex-M0+ MCU during cold start and brownout conditions. IC Role / Device Role / Timing Role: Shunt regulator establishing 4.3 V threshold for external reset supervisor IC. Use Value: Ensures deterministic reset assertion at precisely 4.3 V with <290 Ω dynamic impedance minimizing threshold hysteresis.
Automotive Sensor Biasing	Low-Power Analog Front-End
Use Scenario: Supplying regulated 4.3 V bias to Hall-effect position sensor in engine control unit. IC Role / Device Role / Timing Role: Precision voltage reference stabilizing sensor excitation current under wide temperature swings. Use Value: Maintains sensor accuracy across −40°C to +150°C operating range with <0.1%/°C tempco below 6 V.	Use Scenario: Providing reference voltage for 12-bit SAR ADC in portable medical pulse oximeter. IC Role / Device Role / Timing Role: Low-noise, low-leakage shunt regulator feeding ADC reference input. Use Value: Enables <1 LSB INL error by limiting reference drift to <0.49 µA leakage and <290 Ω impedance at 2 mA.

Industrial Power Monitoring

Microcontroller Reset Circuit

Use Scenario: Monitoring 5 V DC bus in PLC I/O modules using resistive divider into ADC input.

IC Role / Device Role / Timing Role: Zener reference diode providing stable 4.3 V clamp to protect ADC input from overvoltage during bus transients.

Use Value: Prevents ADC saturation and latch-up while maintaining <0.5 µA loading on the sensing network.

Use Scenario: Generating clean reset signal for ARM Cortex-M0+ MCU during cold start and brownout conditions.

IC Role / Device Role / Timing Role: Shunt regulator establishing 4.3 V threshold for external reset supervisor IC.

Use Value: Ensures deterministic reset assertion at precisely 4.3 V with <290 Ω dynamic impedance minimizing threshold hysteresis.

Automotive Sensor Biasing

Low-Power Analog Front-End

Use Scenario: Supplying regulated 4.3 V bias to Hall-effect position sensor in engine control unit.

IC Role / Device Role / Timing Role: Precision voltage reference stabilizing sensor excitation current under wide temperature swings.

Use Value: Maintains sensor accuracy across −40°C to +150°C operating range with <0.1%/°C tempco below 6 V.

Use Scenario: Providing reference voltage for 12-bit SAR ADC in portable medical pulse oximeter.

IC Role / Device Role / Timing Role: Low-noise, low-leakage shunt regulator feeding ADC reference input.

Use Value: Enables <1 LSB INL error by limiting reference drift to <0.49 µA leakage and <290 Ω impedance at 2 mA.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5336B	Same electrical specs, but supplied in 1000-unit box instead of tape-and-reel; identical Case 017AA package	No difference in circuit function or layout; only packaging and logistics distinction	Select 1N5336B for manual prototyping or low-volume hand-soldered builds
BZX84-C4V3	SOT-23 surface-mount package; 4.3 V ±5%, 300 mW rating, 90 Ω Z_ZT; not rated for 5 W or 1100 A surge	Only suitable for low-power signal-level regulation; cannot replace 1N5336BRL in power rail clamping	Choose BZX84-C4V3 only for space-constrained PCBs where 5 W dissipation and surge immunity are unnecessary

Compared with 1N5336BRL, 1N5336B offers identical performance in a different packaging format ideal for bench testing, while BZX84-C4V3 trades power capability and surge resilience for miniaturization - making it unsuitable as a drop-in replacement in high-energy regulation roles.

Availability

1N5336BRL is available at Aetrix Electronics and suitable for industrial power monitoring, microcontroller reset circuits, automotive sensor biasing, and low-power analog front-end designs requiring stable component supply and full traceability.

Supply support for 1N5336BRL 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 automotive, industrial, cloud, and IoT applications.

The 1N53 Series belongs to onsemi's Surmetic™ 40 Zener regulator family, engineered for high-reliability shunt regulation in harsh environments where thermal stability, surge immunity, and long-term parametric consistency are mandatory.

FAQ

What is the nominal zener voltage and tolerance of the 1N5336BRL?

The 1N5336BRL has a nominal zener voltage of 4.3 V with a guaranteed tolerance of ±5%, corresponding to a minimum of 4.09 V and maximum of 4.52 V at I_ZT = 2 mA. This tight tolerance eliminates need for external trimming in precision reference designs and is validated per JEDEC standards for B-suffix devices.

How much power can the 1N5336BRL dissipate continuously, and how does temperature affect it?

The 1N5336BRL is rated for 5 W steady-state power dissipation at lead temperature (T_L) = 25°C, with linear derating of 40 mW/°C above that temperature. At T_L = 100°C, its usable power drops to 2 W. Derating must be calculated using actual lead temperature, not ambient, due to its junction-to-lead thermal resistance of 25 °C/W.

What is the maximum surge current rating for the 1N5336BRL, and under what conditions is it specified?

The 1N5336BRL is rated for a peak non-repetitive surge current of 1100 A at an 8.3 ms pulse width, per Figure 5 in the onsemi datasheet. This rating applies specifically to its nominal 4.3 V zener voltage and assumes proper lead mounting (3/8″ to 1/2″ from body) and single-pulse conditions - not repetitive operation.

Does the 1N5336BRL have Pb-free construction, and is it RoHS compliant?

Yes, the "G" suffix in 1N5336BRL indicates Pb-free packaging per onsemi's compliance documentation. It meets RoHS Directive 2011/65/EU requirements and is qualified for standard reflow profiles including JEDEC J-STD-020. The device uses lead-free terminations and halogen-free molding compound.

What is the zener impedance of the 1N5336BRL, and why does it matter in circuit design?

The 1N5336BRL has a maximum zener impedance (Z_ZT) of 290 Ω at I_ZT = 2 mA. This value directly determines output voltage variation under changing load current - lower Z_ZT yields tighter regulation. In practice, it limits ripple rejection and improves line/load regulation in shunt-based references and protection circuits.

1N5336BRL Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: T-18, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 4.3 V

Tolerance:: ±5%

Power - Max:: 5 W

Impedance (Max) (Zzt):: 2 Ohms

Current - Reverse Leakage @ Vr:: 10 µA @ 1 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

1N5336BRL FAQ

1.How can I place an order for 1N5336BRL through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5336BRL 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 1N5336BRL reliable?

The price and inventory of 1N5336BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5336BRL is usually 5 days.

3.What payment methods are accepted for 1N5336BRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5336BRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5336BRL?

1N5336BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5336BRL 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 1N5336BRL?

For technical support, including 1N5336BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5336BRL requirements.

6.How does Aetrix verify that 1N5336BRL is sourced from the original manufacturer or authorized distributors?

All 1N5336BRL 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 1N5336BRL meets industry standards.

7.What is the process for return or replacement of 1N5336BRL?

All 1N5336BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5336BRL, 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 1N5336BRL part is unused and in its original packaging.

Return procedure for 1N5336BRL:

1.Submit a request within 90 days.

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

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