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

onsemi 1N5253BRL

Name: 1N5253BRL
Brand: onsemi
SKU: 1N5253BRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5253BRL

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: -

Datasheet:: 1N5253BRL.pdf

Description:: DIODE ZENER 25V UNIDIRECTIONAL

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Inventory:35,000

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Product details

Overview

1N5253BRL from ON Semiconductor is a 500 mW, 25 V ±5% axial-lead Zener diode in a hermetically sealed DO-35 (CASE 299) glass package, rated for –65°C to +200°C operation, with 35 Ω maximum zener impedance at 5.0 mA test current and 0.1 µA leakage at 19 V reverse bias - used for precision voltage reference and low-power regulation in power supply feedback paths.

For engineers reviewing the 1N5253BRL datasheet, pinout, applications, or equivalent options, this part serves as a stable, ESD-hardened (Class 3, >16 kV HBM) voltage clamp in analog sensor interfaces, microcontroller reset circuits, and industrial signal conditioning where tight tolerance and high-temperature reliability are required.

Technical Context

The 1N5253BRL implements a silicon-oxide passivated PN junction optimized for stable reverse-bias breakdown at 25 V nominal, with temperature coefficient of +0.089 %/°C and thermal resistance (junction-to-lead) of ~30°C/W under standard 3/8″ lead mounting. Its double-slug metallurgical construction ensures mechanical robustness and hermetic sealing against moisture and contaminants.

It operates within a 500 mW steady-state power limit at lead temperature ≤75°C, derating linearly to zero at 200°C, and maintains <0.1 µA leakage at 80% of nominal V_Z (19 V) up to +125°C - enabling use in battery-powered and thermally constrained designs without active cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	23.75 V min / 25 V nominal / 26.25 V max at I_ZT = 5.0 mA - defines precise clamping threshold for voltage reference and overvoltage protection.
Power Dissipation (P_D)	500 mW at T_L ≤ 75°C - supports continuous regulation in compact PCB layouts with minimal heatsinking.
Zener Impedance (Z_ZT)	≤35 Ω at I_ZT = 5.0 mA - ensures low dynamic deviation under load transients in feedback loops.
Leakage Current (I_R)	≤0.1 µA at V_R = 19 V - minimizes standby current loss in low-power systems and battery backup circuits.
Temperature Coefficient	+0.089 %/°C - enables predictable V_Z drift compensation across –65°C to +200°C operating range.
ESD Rating	Class 3 (>16 kV HBM) - provides inherent robustness against handling and system-level electrostatic discharge events.
Package	DO-35 (CASE 299), axial-lead, hermetically sealed glass - delivers environmental immunity and long-term stability in harsh industrial settings.

Pinout & Package

DO-35 (CASE 299) axial-lead glass package: hermetically sealed, double-slug construction with corrosion-resistant leads; cathode identified by polarity band; maximum soldering temperature 230°C at 1/16″ from case for 10 seconds.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-side connection in reverse-bias regulation	Connected to ground or lower potential node when used as shunt regulator; carries forward current up to 200 mA (V_F ≤ 1.1 V).
Cathode	Zener breakdown terminal / high-side connection in reverse-bias regulation	Connected to input or regulated rail; sustains precise 25 V reverse breakdown with low dynamic impedance and minimal temperature drift.

Key Features

Feature	Design Value
Hermetic glass sealing	Prevents moisture ingress and parameter shift over time - critical for aerospace, automotive, and medical applications requiring >15-year reliability.
±5% zener voltage tolerance	Reduces need for post-assembly trimming in production; supports direct replacement in legacy 1N52xxB designs without recalibration.
Double-slug mechanical construction	Improves thermal transfer from junction to leads - enables higher sustained power dissipation than conventional DO-204AA packages.
ESD-hardened junction	Eliminates need for external TVS protection in board-level ESD testing (IEC 61000-4-2 Level 4) for front-end analog inputs and reset lines.
Wide temperature range	Operates from –65°C to +200°C - suitable for downhole oil/gas sensors, engine control modules, and military-grade power supplies.

Applications

Industrial Sensor Signal Conditioning	Microcontroller Reset Circuit
Use Scenario: Stabilizing reference voltage for 12-bit ADCs in pressure and temperature transmitters exposed to ambient temperatures from –40°C to +85°C. IC Role / Device Role / Timing Role: Shunt voltage reference providing 25 V bias to op-amp gain stages and ADC reference dividers. Use Value: Maintains <±0.5% output accuracy over full temperature range due to low TC (+0.089%/°C) and sub-0.1 µA leakage at 19 V.	Use Scenario: Generating a clean, temperature-stable reset threshold for ARM Cortex-M0+ MCUs in programmable logic controllers. IC Role / Device Role / Timing Role: Zener-clamped RC network defining precise 25 V trigger point for reset supervisor ICs. Use Value: Ensures deterministic reset assertion across –40°C to +105°C with no false triggers, leveraging ±5% V_Z tolerance and Class 3 ESD immunity.
Low-Power Battery Backup Regulator	Overvoltage Protection Clamp
Use Scenario: Regulating 25 V rail for real-time clock (RTC) and SRAM backup in smart meter designs powered by lithium-thionyl chloride cells. IC Role / Device Role / Timing Role: Passive shunt regulator maintaining stable voltage during battery discharge from 3.6 V to 2.0 V. Use Value: Draws only 0.1 µA leakage at 19 V, extending 10-year battery life while holding V_Z within ±1.25 V over full operating temperature.	Use Scenario: Clamping transient surges on 24 V DC industrial bus lines subject to inductive switching spikes up to 100 V. IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting surge energy before downstream MOSFET gate drivers are damaged. Use Value: Withstands non-repetitive 100 W surges (10 ms pulse) per Figure 7a and exhibits <35 Ω dynamic impedance to limit clamping overshoot.

Industrial Sensor Signal Conditioning

Microcontroller Reset Circuit

Use Scenario: Stabilizing reference voltage for 12-bit ADCs in pressure and temperature transmitters exposed to ambient temperatures from –40°C to +85°C.

IC Role / Device Role / Timing Role: Shunt voltage reference providing 25 V bias to op-amp gain stages and ADC reference dividers.

Use Value: Maintains <±0.5% output accuracy over full temperature range due to low TC (+0.089%/°C) and sub-0.1 µA leakage at 19 V.

Use Scenario: Generating a clean, temperature-stable reset threshold for ARM Cortex-M0+ MCUs in programmable logic controllers.

IC Role / Device Role / Timing Role: Zener-clamped RC network defining precise 25 V trigger point for reset supervisor ICs.

Use Value: Ensures deterministic reset assertion across –40°C to +105°C with no false triggers, leveraging ±5% V_Z tolerance and Class 3 ESD immunity.

Low-Power Battery Backup Regulator

Overvoltage Protection Clamp

Use Scenario: Regulating 25 V rail for real-time clock (RTC) and SRAM backup in smart meter designs powered by lithium-thionyl chloride cells.

IC Role / Device Role / Timing Role: Passive shunt regulator maintaining stable voltage during battery discharge from 3.6 V to 2.0 V.

Use Value: Draws only 0.1 µA leakage at 19 V, extending 10-year battery life while holding V_Z within ±1.25 V over full operating temperature.

Use Scenario: Clamping transient surges on 24 V DC industrial bus lines subject to inductive switching spikes up to 100 V.

IC Role / Device Role / Timing Role: Fast-acting shunt protector diverting surge energy before downstream MOSFET gate drivers are damaged.

Use Value: Withstands non-repetitive 100 W surges (10 ms pulse) per Figure 7a and exhibits <35 Ω dynamic impedance to limit clamping overshoot.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5253BTA	Same electrical specs and DO-35 package; differs only in packaging format (ammo pack vs. tape & reel)	Preferred for manual prototyping and low-volume assembly where tape-and-reel feeding is not required	Select 1N5253BTA when hand-soldering or using pick-and-place machines without tape-feed capability.
BZX55-C24	24 V nominal, ±5%, 500 mW, DO-35 - 1 V lower V_Z, 40 Ω Z_ZT, no specified ESD rating	Suitable for cost-sensitive consumer electronics but lacks Class 3 ESD hardening and high-temp rating	Choose BZX55-C24 only for non-critical commercial applications where 24 V tolerance and absence of ESD certification are acceptable.

Compared with 1N5253BRL, 1N5253BTA offers identical performance in a different logistics format, while BZX55-C24 trades 1 V lower regulation voltage and reduced ESD/temperature robustness for lower unit cost - making 1N5253BRL the optimal choice for industrial, automotive, and high-reliability designs demanding guaranteed 25 V ±5% regulation and >16 kV HBM immunity.

Availability

1N5253BRL is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset circuits, low-power battery backup regulators, and overvoltage protection clamps requiring stable component supply with traceable sourcing and long-lifecycle support.

Supply support for 1N5253BRL 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The 1N52xxB series was designed as a high-reliability, hermetically sealed Zener voltage regulator family targeting applications demanding long-term stability, wide temperature operation, and ESD resilience - especially in mission-critical industrial and transportation systems.

FAQ

What is the nominal zener voltage and tolerance of the 1N5253BRL?

The 1N5253BRL has a nominal zener voltage of 25 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 23.75 V and 26.25 V when tested at 5.0 mA (I_ZT) and 25°C. This tolerance is JEDEC-standard for the 1N52xxB series and is confirmed in the Electrical Characteristics table on page 208 of the ON Semiconductor datasheet.

What package type and marking does the 1N5253BRL use?

The 1N5253BRL uses the DO-35 (CASE 299) axial-lead hermetically sealed glass package, with cathode indicated by a polarity band. Its marking is "1N5253B", consistent across all variants in the 1N52xxB series, and it ships in 5000-unit tape-and-reel format as specified in the Ordering Information section.

How does the 1N5253BRL perform under high-temperature conditions?

The 1N5253BRL is rated for operation from –65°C to +200°C, with zener voltage drift characterized by a +0.089 %/°C temperature coefficient. At +125°C, its leakage current remains ≤0.1 µA at 19 V reverse bias, and its power dissipation derates linearly from 500 mW at 75°C to zero at 200°C - verified in Figures 1 and 3 of the official datasheet.

Is the 1N5253BRL suitable for ESD-sensitive applications?

Yes, the 1N5253BRL is rated Class 3 (>16 kV) per Human Body Model (HBM), as stated in the Specification Features section. This makes it suitable for use in ESD-prone environments such as handheld instrumentation, field-deployed sensors, and industrial control panels without requiring additional external protection components.

What is the maximum zener impedance and test condition for the 1N5253BRL?

The 1N5253BRL has a maximum zener impedance (Z_ZT) of 35 Ω, measured at the zener test current I_ZT = 5.0 mA and 25°C ambient temperature. This value reflects dynamic resistance under small-signal AC conditions (IZ(ac) = 0.1 × IZ(dc), 60 Hz), as defined in Note 4 on page 207 of the datasheet.

1N5253BRL Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Active

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

Tolerance:: -

Power - Max:: -

Impedance (Max) (Zzt):: -

Current - Reverse Leakage @ Vr:: -

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

1N5253BRL FAQ

1.How can I place an order for 1N5253BRL through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5253BRL 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 1N5253BRL reliable?

The price and inventory of 1N5253BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5253BRL is usually 5 days.

3.What payment methods are accepted for 1N5253BRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5253BRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5253BRL?

1N5253BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5253BRL 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 1N5253BRL?

For technical support, including 1N5253BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5253BRL requirements.

6.How does Aetrix verify that 1N5253BRL is sourced from the original manufacturer or authorized distributors?

All 1N5253BRL 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 1N5253BRL meets industry standards.

7.What is the process for return or replacement of 1N5253BRL?

All 1N5253BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5253BRL, 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 1N5253BRL part is unused and in its original packaging.

Return procedure for 1N5253BRL:

1.Submit a request within 90 days.

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

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