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

onsemi 1N5350BG

Name: 1N5350BG
Brand: onsemi
SKU: 1N5350BG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5350BG

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: T-18, Axial

Datasheet:: 1N5350BG.pdf

Description:: DIODE ZENER 13V 5W AXIAL

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Product details

Overview

1N5350BG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 13.0 V (±5%), maximum zener impedance of 100 Ω at 2.5 mA test current, and surge rating of 180 W for 8.3 ms. It operates across −65 °C to +200 °C and delivers stable voltage regulation in DC power supply feedback paths, overvoltage protection circuits, and reference voltage generation.

For engineers reviewing the 1N5350BG datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, thermal behavior, polarity marking, Pb-free package compliance, and direct alternative options for 13 V Zener regulation in industrial and automotive power systems.

Technical Context

The 1N5350BG uses a silicon-oxide passivated junction for improved stability and low leakage. Its zener voltage is specified at IZT = 2.5 mA with ±5% tolerance, and it maintains regulation down to IZK = 1 mA where dynamic impedance rises to 100 Ω.

Thermal resistance from junction-to-lead is 25 °C/W at TL = 25 °C with 3/8″ lead length; temperature coefficient is +4.5 mV/°C (typical) for 13 V units, enabling predictable drift compensation in precision references.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	12.35 V min / 13.0 V nom / 13.65 V max @ I_ZT = 2.5 mA - defines regulated output range under standard test conditions
Max Power Dissipation	5 W @ T_L = 25 °C - sets absolute steady-state power limit before thermal derating begins
Zener Impedance	100 Ω max @ I_ZT = 2.5 mA - determines regulation stiffness and output voltage ripple sensitivity
Leakage Current	0.25 mA max @ V_R = 7.0 V - ensures minimal standby current in high-impedance bias networks
Surge Current	180 W peak @ 8.3 ms pulse - supports transient overvoltage clamping without failure
Junction Temp Range	−65 °C to +200 °C - enables operation in under-hood automotive and industrial environments
ESD Rating	Class 3 (>16 kV HBM) - protects against handling-induced electrostatic discharge during assembly

Pinout & Package

Package: Axial-lead, transfer-molded plastic (Case 017AA), cathode indicated by band. Dimensions: A = 8.38–8.89 mm body length, B = 3.30–3.68 mm body diameter, D = 0.94–1.09 mm lead diameter, K = 25.4–31.75 mm overall length.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connects to lower-potential node in reverse-biased Zener configuration; carries full regulator current during clamping
Cathode	Zener breakdown terminal	Marked with band; connects to higher-potential node; defines regulated voltage referenced to anode

Key Features

Feature	Design Value
Pb-Free construction	RoHS-compliant packaging with no lead content - meets global environmental compliance requirements
Tight voltage tolerance	±5% zener voltage spread - reduces need for post-production binning in volume power supplies
High surge robustness	180 W non-repetitive surge rating - sustains short-duration transients without parametric shift or failure
Low leakage at low VR	≤0.25 mA @ 7.0 V - minimizes error in high-resistance voltage divider biasing of op-amp references
Stable temperature coefficient	+4.5 mV/°C typical - enables predictable drift modeling for compensated reference designs

Applications

DC Power Supply Regulation	Overvoltage Protection Circuit
Use Scenario: Stabilizing 13 V rail in linear regulator feedback loop or shunt regulator stage. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp output voltage at precise 13 V level. Use Value: Delivers ±5% regulation accuracy with 100 Ω dynamic impedance, minimizing load-induced voltage droop.	Use Scenario: Clamping input voltage to protect downstream ICs from 15–20 V surges in automotive accessory circuits. IC Role / Device Role / Timing Role: Shunt element that conducts excess current when input exceeds 13.65 V threshold. Use Value: Withstands 180 W transient surges for 8.3 ms without degradation, preserving system reliability.
Reference Voltage Source	Industrial Sensor Excitation
Use Scenario: Providing stable 13 V excitation for bridge-based pressure sensors in factory automation modules. IC Role / Device Role / Timing Role: Precision voltage reference with low temperature coefficient (+4.5 mV/°C) and low leakage. Use Value: Enables <1% total error over −40 °C to +125 °C ambient when combined with simple compensation.	Use Scenario: Biasing analog front-end circuitry in programmable logic controller (PLC) analog input cards. IC Role / Device Role / Timing Role: Low-noise, thermally stable shunt regulator supplying clean 13 V to op-amp rails. Use Value: Maintains regulation across −65 °C to +200 °C junction range, supporting extended industrial temperature operation.

DC Power Supply Regulation

Overvoltage Protection Circuit

Use Scenario: Stabilizing 13 V rail in linear regulator feedback loop or shunt regulator stage.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp output voltage at precise 13 V level.

Use Value: Delivers ±5% regulation accuracy with 100 Ω dynamic impedance, minimizing load-induced voltage droop.

Use Scenario: Clamping input voltage to protect downstream ICs from 15–20 V surges in automotive accessory circuits.

IC Role / Device Role / Timing Role: Shunt element that conducts excess current when input exceeds 13.65 V threshold.

Use Value: Withstands 180 W transient surges for 8.3 ms without degradation, preserving system reliability.

Reference Voltage Source

Industrial Sensor Excitation

Use Scenario: Providing stable 13 V excitation for bridge-based pressure sensors in factory automation modules.

IC Role / Device Role / Timing Role: Precision voltage reference with low temperature coefficient (+4.5 mV/°C) and low leakage.

Use Value: Enables <1% total error over −40 °C to +125 °C ambient when combined with simple compensation.

Use Scenario: Biasing analog front-end circuitry in programmable logic controller (PLC) analog input cards.

IC Role / Device Role / Timing Role: Low-noise, thermally stable shunt regulator supplying clean 13 V to op-amp rails.

Use Value: Maintains regulation across −65 °C to +200 °C junction range, supporting extended industrial temperature operation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5350B	Same electrical specs but SnPb lead finish; not RoHS-compliant	Restricted to legacy industrial assemblies where Pb exemption applies	Select only if Pb-free compliance is not required and existing solder process uses SnPb alloy
BZX85C13	1.3 W rating, 10% tolerance, 100 Ω Z_ZT, TO-204AA package	Limited to low-power applications; unsuitable for 5 W continuous dissipation	Use only in space-constrained PCBs where thermal mass is sufficient to dissipate ≤1.3 W

Compared with 1N5350BG, the 1N5350B offers identical regulation performance but lacks Pb-free compliance, while BZX85C13 trades power handling and tolerance for smaller footprint-making 1N5350BG optimal for robust, compliant 5 W Zener regulation.

Availability

1N5350BG is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection circuits, and industrial sensor excitation requiring stable component supply and long-term lifecycle support.

Supply support for 1N5350BG 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, serving automotive, industrial, cloud, medical, and IoT markets with differentiated silicon and packaging technologies.

The 1N53 Series belongs to onsemi's Surmetic 40 Zener regulator family, engineered for high-reliability voltage reference and clamping in harsh-environment power systems where thermal stability and surge resilience are critical.

FAQ

What is the nominal zener voltage and tolerance of the 1N5350BG?

The 1N5350BG has a nominal zener voltage of 13.0 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 12.35 V and 13.65 V when tested at I_ZT = 2.5 mA. This tight tolerance is guaranteed per JEDEC standards and reflects the device's use of oxide-passivated silicon junction technology for consistent regulation performance across production lots.

How much power can the 1N5350BG safely dissipate continuously?

The 1N5350BG is rated for 5 W steady-state power dissipation at a lead temperature (T_L) of 25 °C with 3/8″ lead length. Above 25 °C, it must be derated at 40 mW/°C - for example, at T_L = 75 °C, maximum allowable power drops to 3 W. This derating ensures junction temperature remains within the −65 °C to +200 °C operational limit.

Does the 1N5350BG have Pb-free packaging?

Yes, the "G" suffix in 1N5350BG explicitly denotes a Pb-free, RoHS-compliant package per onsemi's manufacturing specification. The device uses lead-free solderable terminations and void-free transfer-molded plastic encapsulation (Case 017AA), meeting global environmental directives without compromising thermal or electrical performance.

What is the maximum surge current capability of the 1N5350BG?

The 1N5350BG supports a maximum non-repetitive surge current of 180 W for an 8.3 ms square-wave pulse, corresponding to approximately 13.8 A at 13 V. This rating is validated per Figure 5 in the official onsemi datasheet and enables reliable transient suppression in automotive load-dump and inductive switching scenarios without permanent parameter shift.

How is polarity identified on the 1N5350BG package?

Polarity on the 1N5350BG is marked by a single cathode band located near one end of the axial plastic body. The banded end is the cathode; the opposite lead is the anode. This marking aligns with JEDEC standard Case 017AA mechanical drawings and must be observed during PCB layout to ensure correct reverse-bias connection for Zener operation.

1N5350BG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: T-18, Axial

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 13 V

Tolerance:: ±5%

Power - Max:: 5 W

Impedance (Max) (Zzt):: 2.5 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 9.9 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

1N5350BG FAQ

1.How can I place an order for 1N5350BG through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5350BG 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 1N5350BG reliable?

The price and inventory of 1N5350BG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5350BG is usually 5 days.

3.What payment methods are accepted for 1N5350BG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5350BG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5350BG?

1N5350BG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5350BG 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 1N5350BG?

For technical support, including 1N5350BG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5350BG requirements.

6.How does Aetrix verify that 1N5350BG is sourced from the original manufacturer or authorized distributors?

All 1N5350BG 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 1N5350BG meets industry standards.

7.What is the process for return or replacement of 1N5350BG?

All 1N5350BG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5350BG, 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 1N5350BG part is unused and in its original packaging.

Return procedure for 1N5350BG:

1.Submit a request within 90 days.

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

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