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Microchip Technology 1N5241B/TR
- Part No.:
- 1N5241B/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5241B/TR.pdf
- Description:
- DIODE ZENER 11V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,155
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Product details
Overview
1N5241B/TR from Microsemi is a 500 mW, 11 V ±5% glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 20 mA test current, 600 Ω maximum zener impedance at knee current, and operating across –65°C to +175°C. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, power supply feedback paths, and overvoltage protection.
For engineers reviewing the 1N5241B/TR datasheet, 1N5241B/TR pinout, 1N5241B/TR application, or 1N5241B/TR equivalent, key selection factors include its 11 V nominal zener voltage with ±5% tolerance (B suffix), 500 mW power rating at 25°C, DO-35 mechanical form factor, and guaranteed zener impedance and temperature coefficient per JEDEC 1N52xxB specification.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable 11 V regulation across a wide current range (0.25 mA to 20 mA), with a typical temperature coefficient of +0.076 %/°C. Its DO-35 glass package provides hermetic sealing and inherent radiation hardness per MicroNote 050.
Electrical behavior is defined by two critical impedance points: ZZT = 600 Ω at IZK = 0.25 mA (knee impedance), and ZZT = 22 Ω at IZT = 20 mA (test current impedance). Reverse leakage is limited to ≤0.1 μA at VR = 8.0 V, and forward voltage is ≤1.5 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 11 V ±5% - defines regulated output voltage under 20 mA test current; B suffix confirms 5% tolerance. |
| Power Dissipation | 500 mW at 25°C - sets maximum continuous DC power handling before thermal derating applies. |
| Zener Impedance | 600 Ω max at IZK = 0.25 mA - ensures stable regulation near knee voltage; critical for low-current reference use. |
| Test Current | 20 mA - current at which VZ is specified; design must deliver ≥20 mA for full accuracy. |
| Operating Temperature | –65°C to +175°C - supports aerospace, downhole, and high-reliability industrial environments. |
| Thermal Resistance | 250 °C/W junction-to-lead - determines temperature rise per watt; requires ≥10 mm lead length for rated power. |
| Reverse Leakage | ≤0.1 μA at VR = 8.0 V - ensures minimal quiescent current in standby regulation or sensing circuits. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by a single black band. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026. Weight: 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential; reverse-biased operation requires anode at lower voltage than cathode. |
| Cathode | Banded end | Connected to regulated voltage node; polarity marking is mandatory for correct orientation in shunt regulation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xxB series | Guarantees full six-parameter electrical limits (VZ, IR, VF, ZZT, ZZK, αVZ), unlike generic ±20% JEDEC types. |
| Hermetic glass DO-35 package | Enables operation up to +175°C and intrinsic radiation hardness-no conformal coating or shielding required in harsh environments. |
| ±5% voltage tolerance (B suffix) | Reduces calibration overhead in voltage reference designs versus ±10% (A) or ±20% (no suffix) variants. |
| Low knee impedance (600 Ω) | Ensures usable regulation down to 0.25 mA, supporting ultra-low-power biasing and sensing applications. |
| Nonsensitive to ESD | Withstands MIL-STD-750 Method 1020 testing-no external ESD protection needed in assembly or field operation. |
Applications
| Voltage Reference for Op-Amp Circuits | Overvoltage Clamp in Sensor Interfaces |
|---|---|
Use Scenario: Provides stable 11 V reference for rail-to-rail op-amp biasing in precision analog front-ends. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed common-mode level for differential amplifiers. Use Value: Delivers ±5% accuracy and <600 Ω dynamic impedance at microamp-level currents, minimizing drift-induced offset errors. | Use Scenario: Protects 12 V-rated ADC inputs from transient surges exceeding 13 V in automotive sensor modules. IC Role / Device Role / Timing Role: Passive clamping element diverting excess energy to ground when input exceeds 11 V + diode drop. Use Value: Activates at predictable 11 V threshold with ≤0.1 μA leakage below clamp voltage, preserving signal integrity during normal operation. |
| Feedback Element in Linear Regulators | Temperature-Stable Bias Generator |
Use Scenario: Sets output voltage in discrete 78Lxx-style linear regulators using external pass transistor and resistor divider. IC Role / Device Role / Timing Role: Precision shunt element in feedback loop determining regulation setpoint. Use Value: +0.076 %/°C tempco enables predictable, linear drift-allowing simple software compensation in embedded systems. | Use Scenario: Generates stable bias current for RF amplifier stages operating across –40°C to +85°C ambient. IC Role / Device Role / Timing Role: Zener-based current source where VZ stability directly controls bias point accuracy. Use Value: Maintains regulation over full –65°C to +175°C range with minimal capacitance (<2 pF), avoiding RF detuning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | 10 V ±5%, 1 W power rating, DO-41 package, higher thermal resistance (400 °C/W). | Higher power dissipation capability but larger footprint; less suitable for space-constrained or high-temp PCB layouts. | Select 1N4740A only if >500 mW headroom or DO-41 mounting is required; otherwise 1N5241B/TR offers superior thermal performance in compact designs. |
| BZX55C11 | 11 V ±5%, 500 mW, DO-35 package, but tighter 2% tolerance option (BZX55C11 = ±2%), higher ZZK (100 Ω vs 600 Ω). | Lower knee impedance improves low-current regulation but lacks radiation hardness and military screening options. | Choose BZX55C11 for cost-sensitive commercial applications needing tighter initial tolerance; retain 1N5241B/TR for aerospace, defense, or extended temperature reliability. |
Compared with 1N4740A and BZX55C11, the 1N5241B/TR uniquely combines JEDEC-registered six-parameter guarantees, DO-35 hermetic packaging, –65°C to +175°C operation, and radiation hardness-making it the preferred choice for high-reliability analog regulation where environmental robustness is non-negotiable.
Availability
1N5241B/TR is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and linear regulator feedback applications requiring stable component supply across aerospace, industrial control, and medical instrumentation programs.
Supply support for 1N5241B/TR 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, radiation-hardened, and high-temperature analog and mixed-signal components.
The 1N52xxB series was engineered for mission-critical voltage regulation in aerospace, defense, and oilfield electronics-prioritizing long-term stability, hermetic packaging, and guaranteed parametric limits over cost-optimized commercial alternatives.
FAQ
What is the nominal zener voltage and tolerance of the 1N5241B/TR?
The 1N5241B/TR has a nominal zener voltage of 11 V with a guaranteed ±5% tolerance, confirmed by the "B" suffix per JEDEC 1N52xxB specification. This tolerance applies across the full operating temperature range of –65°C to +175°C and is verified at 20 mA test current with full six-parameter characterization-not just VZ and IR.
Does the 1N5241B/TR require external ESD protection?
No, the 1N5241B/TR is nonsensitive to ESD per MIL-STD-750 Method 1020 and does not require external ESD protection. Its glass DO-35 construction and internal structure inherently withstand electrostatic discharge events encountered during handling and board assembly without degradation.
What is the maximum power dissipation of the 1N5241B/TR at 70°C ambient?
At 70°C ambient temperature, the 1N5241B/TR's maximum power dissipation is approximately 375 mW. This is derived from its 250 °C/W junction-to-lead thermal resistance and the linear derating curve: 500 mW × (1 − (70 − 25)/200) = 375 mW, assuming 10 mm lead length from the body per datasheet conditions.
Can the 1N5241B/TR be used in surface-mount designs?
No, the 1N5241B/TR is axial-leaded DO-35 and not a surface-mount device. However, Microsemi offers direct surface-mount equivalents: MLL5241B in DO-213AA (MELF) package, which shares identical electrical specs and "B" tolerance-but requires requalification for thermal and mechanical layout.
What does the "TR" suffix indicate in 1N5241B/TR?
The "TR" suffix in 1N5241B/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. It does not affect electrical or thermal specifications-the device remains identical to bulk 1N5241B in all performance parameters and DO-35 mechanical dimensions.
1N5241B/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- 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:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N5241B/TR FAQ
1.How can I place an order for 1N5241B/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5241B/TR 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/TR reliable?
The price and inventory of 1N5241B/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5241B/TR is usually 5 days.
3.What payment methods are accepted for 1N5241B/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5241B/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5241B/TR?
1N5241B/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5241B/TR 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/TR?
For technical support, including 1N5241B/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5241B/TR requirements.
6.How does Aetrix verify that 1N5241B/TR is sourced from the original manufacturer or authorized distributors?
All 1N5241B/TR 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/TR meets industry standards.
7.What is the process for return or replacement of 1N5241B/TR?
All 1N5241B/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5241B/TR, 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/TR part is unused and in its original packaging.
Return procedure for 1N5241B/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5241B/TR 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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