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onsemi 1N5241BRL
- Part No.:
- 1N5241BRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N5241BRL.pdf
- Description:
- DIODE ZENER 11V 0.5W 5% UNID
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
1N5241BRL from ON Semiconductor is a 500 mW, 11 V ±5% axial-lead Zener diode in DO-35 (CASE 299) hermetically sealed glass package, rated for –65°C to +200°C operation, with 22 Ω maximum zener impedance at 20 mA test current and 2 µA reverse leakage at 8.4 V, used for precision voltage reference and low-power regulation in power supply feedback paths.
For engineers reviewing the 1N5241BRL datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, JEDEC-compliant packaging details, and real-world substitution guidance - all grounded in ON Semiconductor's official 2001 Rev. 2 datasheet.
Technical Context
This device operates as a silicon-oxide passivated junction Zener regulator, optimized for stable DC voltage reference under steady-state conditions with thermal equilibrium maintained at lead temperature ≤75°C. Its double-slug metallurgical construction ensures mechanical robustness and consistent thermal resistance (θJL ≈ 100°C/W typical).
It exhibits a positive temperature coefficient of +0.076%/°C over 25–125°C, measured at IZT = 20 mA, and maintains <2 µA leakage at VR = 8.4 V - enabling reliable performance in low-current bias networks and analog sensing circuits where drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.45–11.55 V @ IZT = 20 mA - defines nominal regulation point with ±5% tolerance per JEDEC standard. |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous DC power before thermal derating begins. |
| Zener Impedance (ZZT) | 22 Ω max @ IZT = 20 mA - determines output voltage variation under load changes; critical for ripple rejection. |
| Reverse Leakage (IR) | 2 µA max @ VR = 8.4 V - ensures minimal current draw in standby mode, preserving battery life in low-power systems. |
| Temperature Coefficient | +0.076%/°C - quantifies VZ drift across operating range; enables accurate compensation in precision references. |
| ESD Rating | Class 3 (>16 kV HBM) - provides inherent protection against handling-induced electrostatic discharge during assembly. |
| Package | DO-35 (CASE 299), axial-lead, hermetically sealed glass - offers environmental sealing and compatibility with wave/flow soldering at 230°C for 10 s. |
Pinout & Package
DO-35 (CASE 299) axial-lead glass package: hermetically sealed, double-slug construction with corrosion-resistant leads; cathode indicated by painted band; mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; establishes reference polarity for reverse-biased operation. |
| Cathode | Zener breakdown terminal / regulated output node | Connected to unregulated input; delivers stable 11 V output when reverse-biased above VZ. |
Key Features
| Feature | Design Value |
|---|---|
| Silicon-oxide passivated junction | Enables stable long-term VZ stability and low noise in voltage reference applications. |
| Hermetically sealed glass case | Provides IP67-equivalent environmental protection without conformal coating in industrial control modules. |
| Double-slug metallurgical bond | Reduces thermal resistance between junction and leads, supporting higher pulse power capability (see Fig. 7a). |
| JEDEC-standard ±5% tolerance | Allows direct drop-in replacement across 1N52xxB series without recalibration in cost-sensitive consumer designs. |
| Low leakage at 80% VZ | Supports high-impedance bias networks in op-amp reference stages without loading error. |
Applications
| Power Supply Feedback Reference | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Used in TL431-based adjustable SMPS feedback loops to set precise output voltage thresholds. IC Role / Device Role / Timing Role: Provides stable 11 V reference to comparator input, defining regulation setpoint independent of input line variation. Use Value: Enables ±1% output accuracy over temperature due to matched TC and low ZZT, reducing need for trimming resistors. |
Use Scenario: Supplies clean reset threshold to microcontroller POR (power-on reset) circuitry during brown-out events. IC Role / Device Role / Timing Role: Acts as voltage monitor that triggers reset when VCC drops below 11 V × 0.9 = 9.9 V. Use Value: Delivers deterministic reset timing with <2 µA leakage, preventing false resets in battery-backed systems. |
| Industrial Sensor Signal Conditioning | LED Current Bias Network |
Use Scenario: Stabilizes excitation voltage for RTD or strain gauge bridges in 4–20 mA transmitter front-ends. IC Role / Device Role / Timing Role: Serves as low-drift reference source for instrumentation amplifier gain-setting resistors. Use Value: Maintains <0.1% full-scale error over –40°C to +85°C ambient via +0.076%/°C TC and tight initial tolerance. |
Use Scenario: Sets constant current for indicator LEDs in panel-mounted HMI devices using simple resistor-Zener bias. IC Role / Device Role / Timing Role: Regulates voltage across current-limiting resistor to fix LED forward current at ~10 mA. Use Value: Ensures consistent LED brightness across 12 V rail variations (±10%) with no active components required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5241BTA | Same electrical specs; DO-35 package in 5000-unit ammo pack instead of tape-and-reel. | No functional difference; preferred for manual prototyping or low-volume hand-soldered assemblies. | Select 1N5241BTA if reel feeding is unavailable or small-batch builds require easy component access. |
| BZX55C11 | 11 V ±5%, 500 mW, DO-35, but higher ZZT (30 Ω max) and wider temp coefficient (±0.08%/°C). | Acceptable for non-critical references but not suitable for precision analog signal chains requiring low drift. | Choose BZX55C11 only when cost is primary constraint and VZ stability >±0.5% is acceptable. |
Compared with 1N5241BRL, 1N5241BTA offers identical performance in a different shipping format, while BZX55C11 trades tighter regulation and lower drift for broader vendor availability - making 1N5241BRL optimal for production-grade analog references demanding repeatability and thermal predictability.
Availability
1N5241BRL is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset circuits, and power supply feedback networks requiring stable component supply with full traceability and lifecycle continuity.
Supply support for 1N5241BRL 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, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The 1N52xxB series was designed as a JEDEC-standardized family of general-purpose Zener regulators targeting cost-sensitive, high-reliability applications where hermetic sealing and wide temperature operation are essential.
FAQ
What is the exact Zener voltage tolerance for 1N5241BRL?
The 1N5241BRL has a nominal Zener voltage of 11 V with a guaranteed tolerance of ±5% - meaning its actual VZ falls between 10.45 V and 11.55 V when tested at IZT = 20 mA and TL = 30°C ±1°C. This tolerance is defined per JEDEC standard and confirmed in ON Semiconductor's 1N5221B Series datasheet Rev. 2.
Can 1N5241BRL be used in surface-mount designs?
No - the 1N5241BRL is exclusively offered in the axial-lead DO-35 (CASE 299) glass package and is not compatible with SMT reflow processes. It requires through-hole mounting and wave or selective soldering. For SMT equivalents, consider ON Semiconductor's NSZ5V1AXV6T1G or similar SOD-123 Zeners - but these differ electrically and mechanically from the 1N5241BRL.
What is the maximum allowable lead temperature during soldering for 1N5241BRL?
The maximum lead temperature for soldering the 1N5241BRL is 230°C, applied at a distance of 1/16″ from the glass case for no longer than 10 seconds. Exceeding this limit risks cracking the hermetic seal or degrading the silicon junction, as specified in the "Mechanical Characteristics" section of the official datasheet.
How does temperature affect the Zener voltage of 1N5241BRL?
The 1N5241BRL exhibits a positive temperature coefficient of +0.076%/°C over 25–125°C, meaning its Zener voltage increases by approximately 8.36 mV per °C rise in junction temperature. This value is measured at IZT = 20 mA and is critical for predicting regulation shift in thermally varying environments like motor drive PCBs.
Is 1N5241BRL suitable for surge protection applications?
No - the 1N5241BRL is not designed for transient voltage suppression. Its 500 mW steady-state rating and non-avalanche structure make it unsuitable for ESD or lightning surge clamping. For such use cases, TVS diodes like SMAJ11A or P6KE11CA are appropriate alternatives; the 1N5241BRL serves only as a precision DC voltage reference or regulator.
1N5241BRL 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:
- -
1N5241BRL FAQ
1.How can I place an order for 1N5241BRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5241BRL 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 1N5241BRL reliable?
The price and inventory of 1N5241BRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5241BRL is usually 5 days.
3.What payment methods are accepted for 1N5241BRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5241BRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5241BRL?
1N5241BRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5241BRL 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 1N5241BRL?
For technical support, including 1N5241BRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5241BRL requirements.
6.How does Aetrix verify that 1N5241BRL is sourced from the original manufacturer or authorized distributors?
All 1N5241BRL 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 1N5241BRL meets industry standards.
7.What is the process for return or replacement of 1N5241BRL?
All 1N5241BRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5241BRL, 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 1N5241BRL part is unused and in its original packaging.
Return procedure for 1N5241BRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5241BRL Tags
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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