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Microchip Technology 1N5241A
- Part No.:
- 1N5241A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5241A.pdf
- Description:
- DIODE ZENER 11V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,004
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Product details
Overview
1N5241A from Microsemi is a 500 mW glass axial-lead Zener diode with nominal Zener voltage 11 V, ±10% tolerance (A suffix), 20 mA test current, and 600 Ω maximum Zener impedance at IZK = 0.25 mA. It operates from −65 °C to +175 °C and regulates voltage in low-power reference and protection circuits.
For engineers reviewing the 1N5241A datasheet, 1N5241A pinout, 1N5241A application, or 1N5241A equivalent, this part serves as a stable, temperature-compensated voltage reference in analog power supplies, overvoltage clamping networks, and precision biasing where DO-35 axial-leaded packaging and JEDEC-standard 1N52xx compatibility are required.
Technical Context
The 1N5241A functions as a reverse-biased voltage reference diode with sharp Zener breakdown at 11 V under 20 mA DC test current. Its 600 Ω dynamic impedance at 0.25 mA ensures predictable regulation across low-current operating points, and its +0.076 %/°C temperature coefficient enables stable performance up to +125 °C.
Designed for axial-lead through-hole mounting in DO-35 (DO-204AH) glass package, it features hermetic sealing, tin-lead or RoHS-compliant matte-tin plating, cathode band polarity marking, and ESD insensitivity per MIL-STD-750 Method 1020 - supporting reliability in industrial and aerospace environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 11 V ±10% - defines regulated output level for reference and clamp circuits |
| Power Dissipation | 500 mW at 25 °C - sets maximum continuous thermal load on PCB traces and pads |
| Zener Impedance | 600 Ω max @ IZK = 0.25 mA - determines voltage deviation under small-signal load changes |
| Test Current | 20 mA - specifies DC bias point where VZ is guaranteed and thermal stability is optimized |
| Temp. Coefficient | +0.076 %/°C - quantifies drift rate of VZ over temperature for system-level accuracy budgeting |
| Operating Temp. | −65 °C to +175 °C - supports deployment in extended-temperature industrial, automotive, and military systems |
| Reverse Leakage | 30 μA max @ VR = 8.0 V - limits standby current in high-impedance bias networks |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package: hermetically sealed cylindrical body, 0.2 g weight, tin-lead or RoHS-compliant matte-tin plating, cathode indicated by single black band. Mounting requires 3/8″ (10 mm) lead length from body for rated thermal resistance (250 °C/W junction-to-lead).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node when used in reverse-bias regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Banded end; connected to regulated voltage node - must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xx series compliance | Ensures interchangeability and standardized test conditions across legacy and new designs |
| ±10% voltage tolerance (A suffix) | Provides cost-optimized regulation accuracy suitable for non-critical bias and clamp applications |
| Low capacitance (typ. <4 pF) | Minimizes signal coupling and high-frequency noise injection in RF-adjacent or fast-switching circuits |
| Radiation-hardened construction | Inherently meets radiation hardness requirements per MicroNote 050 for space and nuclear environments |
| ESD-insensitive design | Eliminates need for external ESD protection during handling and assembly per MIL-STD-750 Method 1020 |
Applications
| Voltage Reference for Analog Sensors | Overvoltage Clamp in Power Supply Rails |
|---|---|
Use Scenario: Providing stable excitation voltage to bridge-based pressure or temperature sensors in industrial transmitters. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to deliver fixed 11 V reference independent of supply variation. Use Value: Enables <1% full-scale error in sensor output over −40 °C to +85 °C ambient using only passive components. | Use Scenario: Protecting 12 V logic inputs from transient surges exceeding 15 V in automotive control modules. IC Role / Device Role / Timing Role: Shunt clamping device that conducts above 11 V to limit downstream voltage excursion. Use Value: Limits peak rail voltage to ≤11.8 V at 100 mA surge, preventing latch-up in CMOS interface ICs. |
| DC Bias Generator for Op-Amp Circuits | Current-Limited LED Driver Reference |
Use Scenario: Setting mid-rail virtual ground in single-supply op-amp signal conditioning stages. IC Role / Device Role / Timing Role: Zener-regulated node establishing precise 11 V bias point for rail-splitting networks. Use Value: Maintains <±0.5% offset stability over 10–100 kΩ load range, reducing op-amp input error. | Use Scenario: Establishing reference voltage for constant-current LED driver feedback in signage lighting. IC Role / Device Role / Timing Role: Voltage reference element in TL431-based shunt regulator loop controlling LED current. Use Value: Improves current regulation accuracy to ±2% across 5–40 V input variations due to tight VZ stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A (ON Semiconductor) | 10 V nominal, ±5% tolerance, 1 W power rating, DO-41 package | Higher power and tighter tolerance but larger footprint and different thermal profile | Select when 1 W dissipation or ±5% accuracy is required; verify PCB pad layout and derating curve |
| BZX55C11 (Vishay) | 11 V nominal, ±5% tolerance, 500 mW, DO-35 package, RoHS-compliant standard | Same voltage and package but tighter tolerance and no military screening options | Choose for commercial-grade cost-sensitive designs requiring RoHS compliance without JAN/JANTX variants |
Compared with 1N5241A, 1N4740A offers higher power and tighter tolerance in a larger DO-41 case, while BZX55C11 matches the DO-35 form factor and 11 V rating but lacks military screening and uses ±5% instead of ±10% tolerance - making it suitable for commercial applications where tighter regulation is preferred and screening is unnecessary.
Availability
1N5241A is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive overvoltage protection, and analog biasing circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N5241A 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xx series was designed specifically for general-purpose Zener regulation in harsh-environment applications, emphasizing JEDEC standardization, wide temperature operation, and compatibility with military screening levels (JAN/JANTX/JANTXV/JANS).
FAQ
What is the nominal Zener voltage and tolerance of the 1N5241A?
The 1N5241A has a nominal Zener voltage of 11 V with a ±10% tolerance, as indicated by the "A" suffix per Microsemi's documentation. This means the actual measured VZ at 20 mA test current falls between 9.9 V and 12.1 V across production lots, supporting cost-sensitive regulation where tight accuracy is not critical.
What package type does the 1N5241A use and what are its key mechanical features?
The 1N5241A uses the DO-35 (DO-204AH) glass axial-leaded package: hermetically sealed, 0.2 g weight, cathode identified by a single black band, and tin-lead or RoHS-compliant matte-tin plating. Its 3/8″ (10 mm) minimum lead length from body is required to achieve the rated 250 °C/W junction-to-lead thermal resistance.
How does the temperature coefficient of the 1N5241A affect its regulation stability?
The 1N5241A has a temperature coefficient of +0.076 %/°C, meaning its Zener voltage increases by approximately 8.4 mV per °C rise above 25 °C. This positive drift is typical for 11 V Zeners and must be accounted for in high-precision references - for example, a 50 °C ambient rise adds ~0.42 V to VZ, limiting accuracy in uncalibrated systems.
Can the 1N5241A be used in surface-mount designs?
No, the 1N5241A is exclusively a through-hole axial-leaded device in DO-35 package. For surface-mount equivalents, Microsemi offers the MLL5241A in DO-213AA (MELF) package - same electrical specs and "A" tolerance, but requiring reflow-compatible layout and soldering profiles instead of wave or hand-soldering.
What is the maximum reverse leakage current for the 1N5241A and at what voltage is it specified?
The 1N5241A has a maximum reverse leakage current (IR) of 30 μA at VR = 8.0 V, as specified in Microsemi's electrical characteristics table. This low leakage supports use in high-impedance bias networks where standby current must remain below 100 μA, such as in battery-powered sensor nodes or low-power comparators.
1N5241A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5241A FAQ
1.How can I place an order for 1N5241A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5241A 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 1N5241A reliable?
The price and inventory of 1N5241A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5241A is usually 5 days.
3.What payment methods are accepted for 1N5241A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5241A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5241A?
1N5241A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5241A 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 1N5241A?
For technical support, including 1N5241A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5241A requirements.
6.How does Aetrix verify that 1N5241A is sourced from the original manufacturer or authorized distributors?
All 1N5241A 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 1N5241A meets industry standards.
7.What is the process for return or replacement of 1N5241A?
All 1N5241A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5241A, 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 1N5241A part is unused and in its original packaging.
Return procedure for 1N5241A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5241A Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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