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Microchip Technology 1N5264A
- Part No.:
- 1N5264A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5264A.pdf
- Description:
- DIODE ZENER 60V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,504
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Product details
Overview
1N5264A from Microsemi is a 60 V, ±10% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 2.1 mA test current and 1400 Ω dynamic impedance at 0.25 mA, operating from −65 °C to +175 °C. It serves as a precision voltage reference or shunt regulator in low-power analog circuits, power supply feedback loops, and overvoltage protection.
For engineers reviewing the 1N5264A datasheet, 1N5264A pinout, 1N5264A application, or 1N5264A equivalent, key selection criteria include its 60 V nominal Zener voltage, 10% tolerance (A suffix), 1400 Ω Zener impedance at IZK = 0.25 mA, temperature coefficient of +0.097 %/°C, and DO-35 mechanical compatibility with axial-lead PCB mounting.
Technical Context
This device operates in reverse breakdown mode with cathode band indicating polarity; regulation requires the banded end to be held positive relative to the anode. Its Zener knee is verified via dual-point impedance measurement per MicroNote 202 to ensure stable breakdown characteristics.
The 1N5264A exhibits minimal capacitance across its operating voltage range and is nonsensitive to ESD per MIL-STD-750 Method 1020. Thermal resistance is 250 °C/W junction-to-lead at 3/8″ lead length, enabling reliable operation under transient thermal loads in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 60 V @ 2.1 mA test current - defines regulated output voltage under standard bias conditions |
| Zener Tolerance | ±10% (A suffix) - sets absolute voltage accuracy window for design margining |
| Power Dissipation | 500 mW at 25 °C - maximum steady-state power before thermal derating applies |
| Zener Impedance | 1400 Ω @ IZK = 0.25 mA - indicates regulation stiffness at low-current operation |
| Temperature Coefficient | +0.097 %/°C - quantifies voltage drift with ambient temperature change |
| Operating Temperature | −65 °C to +175 °C - supports extended-range industrial and aerospace environments |
| Forward Voltage | ≤1.5 V @ 200 mA - ensures predictable conduction in forward-biased fault conditions |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with tin-lead or RoHS-compliant matte-tin plating; cathode identified by single black band on glass body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference node | Connected to system ground or lower-potential rail during Zener operation |
| Cathode | Zener regulation terminal | Banded end; must be held at higher potential than anode to enable breakdown regulation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered DO-35 construction | Ensures mechanical and solderability compatibility with legacy axial-lead assembly processes |
| Stable Zener knee verified at two current points | Guarantees monotonic breakdown behavior and eliminates marginal units in production |
| Radiation-hardened per MicroNote 050 | Validated for use in high-reliability systems exposed to ionizing radiation environments |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection during handling and board assembly |
| Minimal capacitance profile | Maintains high-frequency signal integrity in timing and RF-coupled reference applications |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Regulating output voltage in discrete linear regulators or TL431-based feedback networks. IC Role / Device Role / Timing Role: Shunt reference element providing stable 60 V reference point for error amplifier comparison. Use Value: Enables accurate output setpoint control within ±10% tolerance without active compensation circuitry. |
Use Scenario: Protecting downstream circuitry from transient overvoltage events exceeding 60 V. IC Role / Device Role / Timing Role: Passive clamping device diverting excess current when input exceeds Zener breakdown threshold. Use Value: Limits peak voltage to 60 V ±10%, preventing damage to sensitive analog front-ends or microcontroller inputs. |
| Voltage Reference Source | Current Source Biasing |
Use Scenario: Generating stable bias voltages for op-amp input stages or sensor excitation circuits. IC Role / Device Role / Timing Role: Precision DC reference node establishing fixed potential for analog signal conditioning. Use Value: Delivers 60 V reference with <0.1 μA leakage at VR = 48 V, supporting low-drift instrumentation designs. |
Use Scenario: Setting constant current in LED driver or transistor bias networks using series resistor + Zener configuration. IC Role / Device Role / Timing Role: Voltage-controlled current limiter defining emitter/base bias point stability. Use Value: Maintains current regulation accuracy despite supply variations due to tight thermal coefficient (+0.097 %/°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5264B | ±5% tolerance (vs. ±10% for 1N5264A); otherwise identical electrical and mechanical specs | Higher voltage accuracy required in precision feedback or calibration circuits | Select 1N5264B when tighter regulation tolerance justifies cost premium |
| MMBZ5264B (SOT-23) | Surface-mount MELF-equivalent; same 60 V, ±5% rating but different package and thermal resistance | Used where board space constraints prohibit axial-leaded components | Choose MMBZ5264B only if reflow-compatible layout and reduced thermal mass are design priorities |
Compared with 1N5264B and MMBZ5264B, the 1N5264A offers the lowest-cost solution for non-critical 60 V regulation where ±10% tolerance is acceptable and through-hole assembly is preferred; it provides superior high-temperature reliability (up to +175 °C) versus SOT-23 alternatives.
Availability
1N5264A is available at Aetrix Electronics and suitable for power supply feedback, overvoltage clamp, and voltage reference source applications requiring stable component supply across industrial, aerospace, and test equipment programs.
Supply support for 1N5264A 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.
The 1N52xxA/B series was designed for ruggedized voltage regulation in military, aerospace, and industrial systems where wide temperature operation and JEDEC-standard axial packaging are essential.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5264A?
The 1N5264A has a nominal Zener voltage of 60 V with a tolerance of ±10%, as indicated by the "A" suffix per Microsemi's documentation. This tolerance applies under standard test conditions at 25 °C with 2.1 mA test current, and is guaranteed across the full operating temperature range of −65 °C to +175 °C.
What package type does the 1N5264A use, and how is polarity marked?
The 1N5264A uses the DO-35 (DO-204AH) hermetically sealed glass axial-leaded package. Polarity is marked by a single black cathode band on the glass body; the banded end is the cathode and must be held at a higher potential than the anode to achieve Zener regulation.
What is the Zener impedance of the 1N5264A, and at what condition is it specified?
The 1N5264A has a maximum Zener impedance of 1400 Ω, measured at IZK = 0.25 mA. This value reflects dynamic impedance near the knee of the breakdown curve and is verified at two current points to ensure stable regulation behavior per MicroNote 202.
Does the 1N5264A require external ESD protection during handling or assembly?
No - the 1N5264A is nonsensitive to ESD per MIL-STD-750 Method 1020, meaning it does not require additional ESD protection during standard handling, soldering, or board assembly. Its glass DO-35 construction inherently withstands typical electrostatic discharge events.
How does the temperature coefficient of the 1N5264A affect its performance in varying ambient conditions?
The 1N5264A has a temperature coefficient of +0.097 %/°C, meaning its Zener voltage increases by approximately 0.058 V per 10 °C rise above 25 °C. This predictable drift enables accurate compensation in temperature-stable reference designs, especially when paired with complementary components.
1N5264A 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):
- 60 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 46 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)
1N5264A FAQ
1.How can I place an order for 1N5264A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5264A 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 1N5264A reliable?
The price and inventory of 1N5264A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5264A is usually 5 days.
3.What payment methods are accepted for 1N5264A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5264A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5264A?
1N5264A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5264A 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 1N5264A?
For technical support, including 1N5264A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5264A requirements.
6.How does Aetrix verify that 1N5264A is sourced from the original manufacturer or authorized distributors?
All 1N5264A 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 1N5264A meets industry standards.
7.What is the process for return or replacement of 1N5264A?
All 1N5264A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5264A, 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 1N5264A part is unused and in its original packaging.
Return procedure for 1N5264A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5264A Tags
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