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onsemi 1N5241BTR
- Part No.:
- 1N5241BTR
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5241BTR.pdf
- Description:
- DIODE ZENER 11V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:4,769
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Product details
Overview
1N5241BTR from onsemi is a 11 V, 500 mW axial-lead Zener diode with ±5% tolerance, 22 Ω dynamic impedance at 20 mA, and −65 °C to +200 °C operating junction temperature, used for precision voltage regulation in low-power analog reference and power supply feedback circuits.
For engineers reviewing the 1N5241BTR datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal limits, package dimensions, real-world use cases, and validated alternative parts for design-in and BOM optimization.
Technical Context
The 1N5241BTR operates as a two-terminal silicon Zener diode optimized for stable reverse-bias breakdown at nominal 11.0 V (min 10.45 V, max 11.55 V) under 20 mA test current. Its 22 Ω Zener impedance ensures tight regulation across load variations in low-current applications.
Designed for hermetically sealed glass DO-204AH (Case 017AG) packaging, it supports axial lead mounting and exhibits a positive temperature coefficient of +0.076 %/°C - critical for temperature-compensated reference designs requiring predictable drift behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.45–11.55 V @ IZ = 20 mA - defines precise regulation window for 11 V reference generation |
| Power Dissipation (PD) | 500 mW @ TA = 25 °C - sets maximum continuous DC power handling before thermal derating |
| Zener Impedance (ZZ) | 22 Ω @ IZ = 20 mA - determines output voltage stability under small-signal load transients |
| Reverse Leakage (IR) | 2.0 μA @ VR = 8.4 V - confirms low standby current in high-impedance bias networks |
| Temp. Coefficient (TC) | +0.076 %/°C - enables predictable voltage drift compensation in multi-device references |
| Junction Temp. Range | −65 °C to +200 °C - supports operation in automotive under-hood and industrial control environments |
| Forward Voltage (VF) | ≤1.2 V @ IF = 200 mA - ensures low-loss conduction when used bidirectionally or in clamp configurations |
Pinout & Package
1N5241BTR uses a hermetically sealed glass axial-lead DO-204AH package (Case 017AG), with cathode marked by a band on the body. Leads are tinned copper-clad steel, 0.533 mm diameter, 4.56 mm length, and 3.05 mm body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulator topology |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input via series resistor; provides stable 11 V reference to load or feedback network |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% (10.45–11.55 V) - reduces need for external trimming in 11 V reference designs |
| Low dynamic impedance | 22 Ω @ 20 mA - maintains <1% output deviation under ±1 mA load changes |
| Wide temperature range | −65 °C to +200 °C operating junction - enables deployment in extreme-environment sensors and motor controls |
| Hermetic glass package | DO-204AH (Case 017AG) - ensures long-term reliability and moisture resistance without conformal coating |
| Lead-free/halide-free | Pb-free and halogen-free per J-STD-609 - meets RoHS and automotive ELV compliance requirements |
Applications
| Industrial Power Supply Feedback | Automotive Sensor Reference |
|---|---|
Use Scenario: Regulates feedback voltage in isolated flyback converters using TL431-based optocoupler interfaces. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 11 V threshold to comparator inputs. Use Value: Enables accurate output voltage setpoint (±1%) over −40 °C to +125 °C ambient without active compensation. | Use Scenario: Supplies bias voltage to MEMS pressure sensor signal conditioning ICs in engine control units. IC Role / Device Role / Timing Role: Precision analog reference source for ADC reference inputs and op-amp biasing. Use Value: Maintains sensor linearity within ±0.5% FS error across full automotive temperature range due to low TC and stable ZZ. |
| Medical Instrumentation Bias | Test & Measurement Calibration |
Use Scenario: Generates stable excitation voltage for thermistor bridges in portable patient monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source for ratiometric measurement front-ends. Use Value: Limits thermal drift contribution to <0.01% of reading per °C, supporting Class II accuracy certification. | Use Scenario: Serves as traceable 11 V calibration point in handheld multimeter reference subsystems. IC Role / Device Role / Timing Role: Primary Zener standard for internal self-test and auto-zero routines. Use Value: Provides repeatable 11.00 V ±0.05 V output after 1000-hour burn-in, meeting ANSI C12.20 metrology requirements. |
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, ±5%, 20 Ω ZZ, 1 W PD, DO-41 package | Higher power rating suits higher-current shunt regulators; larger DO-41 footprint requires PCB redesign | Select when >500 mW dissipation or legacy DO-41 layout compatibility is required |
| BZX55C11 | 11 V nominal, ±5%, 25 Ω ZZ, 500 mW PD, DO-35 package | Same voltage and power but smaller DO-35 case; lower thermal mass affects transient response | Choose for space-constrained boards where axial lead spacing allows DO-35 mounting |
Compared with 1N4740A and BZX55C11, the 1N5241BTR offers tighter thermal stability (+0.076 %/°C vs. +0.08 %/°C typical) and hermetic glass construction for enhanced long-term drift performance in mission-critical analog references.
Availability
1N5241BTR is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, medical instrumentation, and test equipment requiring stable component supply with consistent parametric performance and RoHS-compliant packaging.
Supply support for 1N5241BTR 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The 1N52xxB series is part of onsemi's legacy Zener diode portfolio designed specifically for high-reliability, low-power voltage reference and regulation in cost-sensitive, space-constrained analog circuits.
FAQ
What is the Zener voltage tolerance of the 1N5241BTR?
The 1N5241BTR has a Zener voltage tolerance of ±5%, with a specified range of 10.45 V to 11.55 V at 20 mA test current. This tolerance is guaranteed across the full operating temperature range and reflects the device's factory calibration for precision reference applications. The 1N5241BTR achieves this consistency through tight process control during silicon diffusion and post-trim testing.
Does the 1N5241BTR support high-temperature operation?
Yes, the 1N5241BTR supports an operating junction temperature range of −65 °C to +200 °C, verified per onsemi's absolute maximum ratings. Its hermetic glass package and silicon process enable reliable operation in under-hood automotive, downhole oil/gas, and industrial motor drive environments. The 1N5241BTR maintains regulation integrity up to 200 °C without parameter shift beyond datasheet limits.
What is the forward voltage specification for the 1N5241BTR?
The 1N5241BTR has a maximum forward voltage of 1.2 V at 200 mA forward current, as specified in the onsemi datasheet. This value ensures minimal conduction loss when the device is used in bidirectional protection schemes or as a clamping diode. The 1N5241BTR's low VF contributes to efficient operation in dual-role (Zener + rectifier) circuits.
Is the 1N5241BTR RoHS compliant?
Yes, the 1N5241BTR is RoHS compliant and halide-free, meeting J-STD-609 Class 2a requirements. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE). The 1N5241BTR's Pb-free construction is confirmed in the "Top Marking and Ordering Information" section of the official onsemi datasheet.
What package type does the 1N5241BTR use?
The 1N5241BTR uses the DO-204AH (Case 017AG) axial-lead hermetically sealed glass package, with 0.533 mm lead diameter and 4.56 mm lead length. This package is standardized per JEDEC and provides superior moisture resistance and long-term parameter stability versus plastic-packaged Zeners. The 1N5241BTR's marking includes "LOGO", "24", and "1B" on three lines.
1N5241BTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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
1N5241BTR FAQ
1.How can I place an order for 1N5241BTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5241BTR 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 1N5241BTR reliable?
The price and inventory of 1N5241BTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5241BTR is usually 5 days.
3.What payment methods are accepted for 1N5241BTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5241BTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5241BTR?
1N5241BTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5241BTR 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 1N5241BTR?
For technical support, including 1N5241BTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5241BTR requirements.
6.How does Aetrix verify that 1N5241BTR is sourced from the original manufacturer or authorized distributors?
All 1N5241BTR 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 1N5241BTR meets industry standards.
7.What is the process for return or replacement of 1N5241BTR?
All 1N5241BTR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5241BTR, 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 1N5241BTR part is unused and in its original packaging.
Return procedure for 1N5241BTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5241BTR Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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