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onsemi 1N5241B_T50R
- Part No.:
- 1N5241B_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5241B_T50R.pdf
- Description:
- DIODE ZENER 11V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:4,250
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Product details
Overview
1N5241B_T50R from ON Semiconductor is a 11 V ±5% Zener diode in DO-35 glass package, rated for 500 mW power dissipation, 22 Ω dynamic impedance at 20 mA test current, and -65 °C to +200 °C operating junction temperature. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the 1N5241B_T50R datasheet, pinout, applications, or equivalent options, this page delivers verified Zener voltage (11.0 V), tolerance (±5%), impedance (22 Ω), power rating (500 mW), and thermal limits critical for stable biasing and clamp design in industrial sensor interfaces and power supply feedback paths.
Technical Context
This device operates as a two-terminal silicon Zener diode with sharp reverse breakdown at nominal 11.0 V, specified under thermal equilibrium conditions at 30 °C lead temperature. Its 22 Ω dynamic impedance (ZZ) at 20 mA ensures stable regulation across moderate load variations.
The DO-35 hermetically sealed glass package supports reliable operation up to +200 °C junction temperature and features a cathode band marking per JEDEC DO-204AH. Thermal derating begins above 50 °C at 4.0 mW/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.0 V nominal, ±5% tolerance - defines precise clamping/reference level in regulator or protection circuits |
| Power Dissipation (PD) | 500 mW at TA = 25 °C - sets maximum continuous DC or pulse power handling capability |
| Dynamic Impedance (ZZ) | 22 Ω at IZ = 20 mA - determines output voltage variation under changing load current |
| Reverse Leakage (IR) | 2.0 μA max at VR = 8.4 V - ensures minimal quiescent current in high-impedance bias networks |
| Temperature Coefficient | +0.076 %/°C - quantifies VZ drift with ambient temperature changes |
| Package | DO-35 glass case with cathode band - enables manual soldering, visual polarity identification, and hermetic reliability |
Pinout & Package
DO-35 glass axial package: hermetically sealed, 0.533 mm diameter body, 4.56 mm length, cathode indicated by color band. Weight: 0.137 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of circuit; used for forward-bias testing (VF ≤ 1.2 V @ 200 mA) |
| Cathode | Zener breakdown terminal / regulation reference node | Connected to higher-potential side; reverse-biased to achieve 11.0 V clamping; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage reference | 11.0 V ±5% tolerance enables accurate analog signal conditioning and ADC reference scaling |
| Low dynamic impedance | 22 Ω at 20 mA minimizes output voltage deviation under varying load currents |
| Wide temperature range | -65 °C to +200 °C junction operation supports deployment in automotive under-hood and industrial control environments |
| Hermetic glass packaging | DO-35 construction ensures long-term stability and moisture resistance without conformal coating |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Voltage Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode providing fixed 11.0 V reference to op-amp bias network. Use Value: ±5% tolerance and +0.076 %/°C TC ensure <0.5% total error across -40 °C to +85 °C ambient. | Use Scenario: Generating stable reference for 12-bit SAR ADC in battery-powered data loggers. IC Role / Device Role / Timing Role: Two-terminal shunt regulator establishing clean 11.0 V reference rail. Use Value: 2.0 μA leakage at 8.4 V preserves battery life while maintaining regulation accuracy. |
| Overvoltage Clamp Protection | Power Supply Feedback Divider |
Use Scenario: Protecting microcontroller GPIO pins from transient surges on 12 V supply rails. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage to 11.0 V during ESD or load-dump events. Use Value: 500 mW rating absorbs short-duration transients without thermal runaway. | Use Scenario: Setting output voltage in adjustable linear regulator feedback loop. IC Role / Device Role / Timing Role: Precision Zener replacing resistor divider to improve load/line regulation. Use Value: 22 Ω impedance reduces sensitivity to current variations in feedback path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | 10 V nominal, 500 mW, DO-41 package, 22 Ω ZZ, ±5% tolerance | Slightly lower regulation voltage; larger DO-41 footprint requires PCB layout change | Select when 10 V reference suffices and board space allows larger package |
| BZX55C11 | 11 V nominal, 500 mW, DO-35 package, 20 Ω ZZ, ±5% tolerance, tighter TC (+0.07 %/°C) | Near-identical electrical specs and DO-35 form factor; minor TC improvement | Preferred for new designs requiring marginally better temperature stability |
Compared with 1N4740A and BZX55C11, the 1N5241B_T50R offers identical DO-35 mechanical compatibility with BZX55C11 but uses ON Semiconductor's legacy marking and thermal derating profile, while differing from 1N4740A in both voltage and package size-making it optimal for legacy 11 V reference upgrades in space-constrained industrial PCBs.
Availability
1N5241B_T50R is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power voltage references, and overvoltage clamp protection requiring stable component supply and long-lifecycle support.
Supply support for 1N5241B_T50R 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 connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N52xxB series was designed for general-purpose precision voltage regulation in cost-sensitive, high-reliability applications where DO-35 packaging and tight Zener tolerance are essential.
FAQ
What is the nominal Zener voltage of the 1N5241B_T50R?
The 1N5241B_T50R has a nominal Zener voltage of 11.0 V, with a guaranteed tolerance of ±5% (10.45 V to 11.55 V) at 20 mA test current and thermal equilibrium conditions. This value is measured at 30 °C lead temperature per ON Semiconductor specification, and the 1N5241B_T50R maintains this regulation performance across its full -65 °C to +200 °C junction temperature range.
What package type does the 1N5241B_T50R use?
The 1N5241B_T50R uses the DO-35 glass axial package, compliant with JEDEC DO-204AH. It features a hermetically sealed glass body, 0.533 mm diameter, 4.56 mm length, and cathode identification via a color band. The "T50R" suffix denotes tape-and-reel packaging per ON Semiconductor's ordering nomenclature.
What is the maximum power dissipation for the 1N5241B_T50R?
The 1N5241B_T50R has a maximum power dissipation of 500 mW at ambient temperature 25 °C. Above 50 °C, it must be derated linearly at 4.0 mW/°C. This limit applies to continuous DC operation and non-recurrent pulses (8.3 ms width, 50 °C ambient), and the 1N5241B_T50R must remain within its -65 °C to +200 °C junction temperature range under all operating conditions.
How does the temperature coefficient affect the 1N5241B_T50R's regulation voltage?
The 1N5241B_T50R has a positive temperature coefficient of +0.076 %/°C, meaning its Zener voltage increases by approximately 8.36 mV per °C rise in junction temperature. This behavior is typical for Zeners above 5 V and must be accounted for in precision reference designs; the 1N5241B_T50R's coefficient is confirmed in the ON Semiconductor datasheet Rev. 3, December 2018.
Can the 1N5241B_T50R be used in forward-bias applications?
Yes, the 1N5241B_T50R can conduct in forward bias with a maximum forward voltage of 1.2 V at 200 mA, as specified in the ON Semiconductor datasheet. While primarily intended for reverse-bias Zener regulation, this forward characteristic allows the 1N5241B_T50R to serve dual roles-for example, as a polarity-protection diode in low-current auxiliary paths alongside its main regulation function.
1N5241B_T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N5241B_T50R FAQ
1.How can I place an order for 1N5241B_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5241B_T50R 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 1N5241B_T50R reliable?
The price and inventory of 1N5241B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5241B_T50R is usually 5 days.
3.What payment methods are accepted for 1N5241B_T50R?
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1N5241B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5241B_T50R 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 1N5241B_T50R?
For technical support, including 1N5241B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5241B_T50R requirements.
6.How does Aetrix verify that 1N5241B_T50R is sourced from the original manufacturer or authorized distributors?
All 1N5241B_T50R 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 1N5241B_T50R meets industry standards.
7.What is the process for return or replacement of 1N5241B_T50R?
All 1N5241B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N5241B_T50R, 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 1N5241B_T50R part is unused and in its original packaging.
Return procedure for 1N5241B_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5241B_T50R Tags
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