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

onsemi 1N5927BRL

Name: 1N5927BRL
Brand: onsemi
SKU: 1N5927BRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5927BRL

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: 1N5927BRL.pdf

Description:: DIODE ZENER 12V 3W AXIAL

Quantity:: RFQ Add To RFQ list

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Inventory:3,200

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Product details

Overview

1N5927BRL from onsemi is a 3 W, 12 V ±5% Zener diode in DO-41 axial package, designed for precision voltage regulation and overvoltage protection in DC power supplies, reference circuits, and surge-clamping applications. It delivers stable reverse breakdown at 12 V (min 11.4 V, max 12.6 V) with 31.2 Ω dynamic impedance at 6.5 mA test current and supports 9.1 A maximum DC zener current.

For engineers reviewing the 1N5927BRL datasheet, pinout, applications, or equivalent options, key selection criteria include its 3 W steady-state power rating at 75°C lead temperature, 98 W non-repetitive surge capability at 1 ms, ESD robustness (>16 kV HBM), and Pb-free tape-and-reel packaging (6000 units/reel) for automated assembly.

Technical Context

This device operates as a silicon-oxide passivated junction Zener regulator, optimized for stable voltage reference under varying load and temperature conditions. Its thermal design relies on lead-to-ambient conduction, with derating starting at 75°C (24 mW/°C) and a maximum junction temperature of +200°C.

The 1N5927BRL exhibits low leakage (≤0.25 μA at 9.1 V), tight 5% tolerance (B-suffix), and defined impedance characteristics-31.2 Ω at IZT = 6.5 mA and 550 Ω at IZK = 0.25 mA-enabling predictable regulation performance in feedback and clamping topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	12 V nominal (11.4–12.6 V range); defines precise clamping/reference level in linear regulators and protection circuits
Power Dissipation (P_D)	3 W at T_L = 75°C; enables compact thermal design with 3/8″ lead length and standard PCB mounting
Zener Impedance (Z_ZT)	31.2 Ω @ I_ZT = 6.5 mA; ensures minimal output voltage variation under small-signal load changes
Surge Rating	98 W @ 1 ms; provides transient overvoltage immunity without failure in power supply input stages
ESD Rating	Class 3 (>16 kV HBM); eliminates need for external ESD protection in board-level handling and assembly
Leakage Current (I_R)	≤0.25 μA @ V_R = 9.1 V; guarantees negligible standby current in high-impedance reference nodes
Package	DO-41 (Case 59), axial-lead plastic; compatible with legacy through-hole assembly and automated tape-and-reel pick-and-place

Pinout & Package

DO-41 package with axial leads: cathode identified by polarity band; anode is unmarked lead. Mounting position is unrestricted; maximum soldering temperature is 260°C at 1/16″ from case for 10 seconds.

Pin/Terminal	Circuit Role	Design Meaning
Cathode (banded end)	Zener breakdown terminal	Connected to regulated node or voltage reference point; reverse-biased operation requires this terminal at higher potential than anode
Anode	Reference ground return	Typically tied to system ground or low-side bias; completes current path during regulation or clamping events

Key Features

Feature	Design Value
3 W power rating in DO-41 footprint	Delivers 3× the power of conventional 1 W Zeners without requiring larger board space or heatsinking
±5% Zener voltage tolerance (B-suffix)	Reduces binning requirements and simplifies BOM management for mid-precision reference designs
98 W surge capability (1 ms)	Withstands common-line transients (e.g., IEC 61000-4-5) without degradation or parameter shift
Pb-free tape-and-reel packaging (6000/reel)	Enables direct integration into SMT production lines using standard 8 mm carrier tape and EIA-481 compliance
−65°C to +200°C operating range	Supports deployment in automotive engine compartments, industrial motor drives, and outdoor power electronics

Applications

DC Power Supply Regulation	Overvoltage Protection Clamp
Use Scenario: Stabilizing +12 V rail in offline AC/DC adapters and DC-DC converter feedback loops. IC Role / Device Role / Timing Role: Voltage reference element providing stable setpoint for error amplifier comparison. Use Value: Maintains ±1% output regulation across line/load variations due to low 31.2 Ω Z_ZT and tight 12 V tolerance.	Use Scenario: Protecting microcontroller I/O pins from ESD and inductive switching spikes in industrial PLC modules. IC Role / Device Role / Timing Role: Bidirectional transient suppressor clamping voltage to safe levels during fast-rising surges. Use Value: Limits peak voltage to ≤12.6 V with <0.25 μA leakage, preserving signal integrity without loading the protected node.
Temperature-Stable Reference	Current-Limited Bias Source
Use Scenario: Generating precision bias for op-amp comparators in battery-powered sensor interfaces. IC Role / Device Role / Timing Role: Low-drift voltage source referenced to system ground with minimal self-heating. Use Value: Achieves <±0.02%/°C drift near 12 V (per Figure 5), enabling accurate threshold detection over −40°C to +85°C.	Use Scenario: Providing fixed bias current to LED drivers or transistor bases in lighting control circuits. IC Role / Device Role / Timing Role: Constant-current sink via series resistor + Zener voltage drop. Use Value: Delivers repeatable 6.5 mA test current with <5% variation, ensuring consistent LED brightness or transistor gain.

DC Power Supply Regulation

Overvoltage Protection Clamp

Use Scenario: Stabilizing +12 V rail in offline AC/DC adapters and DC-DC converter feedback loops.

IC Role / Device Role / Timing Role: Voltage reference element providing stable setpoint for error amplifier comparison.

Use Value: Maintains ±1% output regulation across line/load variations due to low 31.2 Ω Z_ZT and tight 12 V tolerance.

Use Scenario: Protecting microcontroller I/O pins from ESD and inductive switching spikes in industrial PLC modules.

IC Role / Device Role / Timing Role: Bidirectional transient suppressor clamping voltage to safe levels during fast-rising surges.

Use Value: Limits peak voltage to ≤12.6 V with <0.25 μA leakage, preserving signal integrity without loading the protected node.

Temperature-Stable Reference

Current-Limited Bias Source

Use Scenario: Generating precision bias for op-amp comparators in battery-powered sensor interfaces.

IC Role / Device Role / Timing Role: Low-drift voltage source referenced to system ground with minimal self-heating.

Use Value: Achieves <±0.02%/°C drift near 12 V (per Figure 5), enabling accurate threshold detection over −40°C to +85°C.

Use Scenario: Providing fixed bias current to LED drivers or transistor bases in lighting control circuits.

IC Role / Device Role / Timing Role: Constant-current sink via series resistor + Zener voltage drop.

Use Value: Delivers repeatable 6.5 mA test current with <5% variation, ensuring consistent LED brightness or transistor gain.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5927B	Same electrical specs and DO-41 package; differs only in packaging format (bulk vs. tape-and-reel)	No functional difference; suitable where manual or tray-based assembly replaces automated pick-and-place	Select 1N5927B for prototyping or low-volume hand-soldered builds; 1N5927BRL preferred for volume SMT production.
MMBZ5242B	SOT-23 surface-mount package; 12 V ±5%, 0.35 W rating; 30 Ω Z_ZT @ 20 mA	Lower power handling and different thermal path; requires PCB layout revision for footprint and thermal relief	Choose MMBZ5242B only when board space constraints prohibit axial components and power dissipation remains ≤350 mW.

Compared with 1N5927B (bulk DO-41) and MMBZ5242B (SOT-23), the 1N5927BRL offers identical regulation performance with factory-optimized tape-and-reel logistics-making it the optimal choice for high-yield, automated manufacturing of 12 V reference and clamp circuits without redesign.

Availability

1N5927BRL is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection clamping, and temperature-stable reference applications requiring stable component supply, RoHS-compliant sourcing, and long-term lifecycle support.

Supply support for 1N5927BRL 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, cloud, and consumer markets.

The 1N5927BRL belongs to the 1N5913B Series of 3 W Zener regulators, engineered for high-reliability voltage reference and transient suppression in cost-sensitive, high-volume power systems where robustness and manufacturability are critical.

FAQ

What is the Zener voltage tolerance of the 1N5927BRL?

The 1N5927BRL has a ±5% Zener voltage tolerance, indicated by the "B" suffix in its part number. Its specified breakdown voltage is 12 V nominal, with a guaranteed range of 11.4 V to 12.6 V at I_ZT = 6.5 mA and T_L = 30°C. This tolerance is fully tested and guaranteed per onsemi's production screening, making the 1N5927BRL suitable for mid-precision regulation where tighter tolerances are not required.

Can the 1N5927BRL be used in surface-mount assemblies?

No-the 1N5927BRL uses a DO-41 axial-leaded package and is not a surface-mount device. It is supplied in tape-and-reel format for automated through-hole insertion equipment, not SMT pick-and-place machines. For SMT-compatible alternatives, consider the MMBZ5242B (SOT-23, 12 V), but note its lower 0.35 W power rating and different thermal behavior compared to the 3 W 1N5927BRL.

What is the maximum surge power the 1N5927BRL can withstand?

The 1N5927BRL is rated for 98 W non-repetitive surge power at a pulse width of 1 ms, as specified in the Absolute Maximum Ratings table. This capability is validated under single-pulse conditions with T_J = 25°C prior to the pulse and is independent of steady-state thermal limits. Exceeding this value-even briefly-may cause irreversible junction damage, so proper transient limiting (e.g., series resistance) must be applied in real-world surge scenarios.

How does the 1N5927BRL's Zener impedance affect regulation accuracy?

The 1N5927BRL has a maximum Zener impedance (Z_ZT) of 31.2 Ω at I_ZT = 6.5 mA. This value directly determines how much the output voltage varies with changes in load current: ΔV_Z ≈ Z_ZT × ΔI_Z. For example, a 10 mA load step causes ~312 mV deviation-so the 1N5927BRL is best suited for applications where moderate regulation stability suffices, such as clamping or coarse reference generation, not ultra-precise instrumentation.

Is the 1N5927BRL RoHS-compliant and lead-free?

Yes-the "G" suffix in the full ordering code (1N5927BRL, G) confirms that the 1N5927BRL is manufactured in a Pb-free package per JEDEC standards. The device meets RoHS Directive 2011/65/EU and is compatible with lead-free reflow and wave soldering processes, including peak temperatures up to 260°C for 10 seconds at 1/16″ from the case body.

1N5927BRL Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 12 V

Tolerance:: ±5%

Power - Max:: 3 W

Impedance (Max) (Zzt):: 6.5 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 9.1 V

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 200 mA

Operating Temperature:: -65°C ~ 200°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: Axial

1N5927BRL FAQ

1.How can I place an order for 1N5927BRL through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5927BRL 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 1N5927BRL reliable?

The price and inventory of 1N5927BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5927BRL is usually 5 days.

3.What payment methods are accepted for 1N5927BRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5927BRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5927BRL?

1N5927BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5927BRL 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 1N5927BRL?

For technical support, including 1N5927BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5927BRL requirements.

6.How does Aetrix verify that 1N5927BRL is sourced from the original manufacturer or authorized distributors?

All 1N5927BRL 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 1N5927BRL meets industry standards.

7.What is the process for return or replacement of 1N5927BRL?

All 1N5927BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5927BRL, 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 1N5927BRL part is unused and in its original packaging.

Return procedure for 1N5927BRL:

1.Submit a request within 90 days.

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

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