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Microchip Technology 1N5252A
- Part No.:
- 1N5252A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5252A.pdf
- Description:
- DIODE ZENER 24V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,957
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Product details
Overview
1N5252A from Microsemi is a 500 mW glass axial-lead Zener diode with nominal Zener voltage of 24 V at 5.2 mA test current, ±10% tolerance (A suffix), 600 Ω maximum Zener impedance at IZK = 0.25 mA, and temperature coefficient of +0.088 %/°C - used for precision low-power voltage regulation in bias networks, reference supplies, and overvoltage protection circuits.
For engineers reviewing the 1N5252A datasheet, 1N5252A pinout, 1N5252A application, or 1N5252A equivalent, key selection criteria include its DO-35 package compatibility, 24 V regulation stability across -65°C to +175°C, low leakage (<0.1 μA at 19.2 V), and suitability for space-constrained through-hole designs requiring JEDEC-standard 1N52xx reliability.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable voltage under varying load and temperature conditions. Its 24 V nominal Zener voltage is specified at 5.2 mA test current (IZT), with knee current (IZK) set at 0.25 mA for low-current regulation integrity.
The device exhibits +0.088 %/°C temperature coefficient above 20 V, confirming positive drift behavior, and achieves 600 Ω dynamic impedance at IZK - critical for minimizing output variation in feedback references and analog sensor conditioning stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 24 V at IZT = 5.2 mA - defines primary regulation point for stable reference generation |
| Zener Tolerance | ±10% (A suffix) - sets absolute voltage window: 21.6 V to 26.4 V at 25°C |
| Max Zener Impedance (ZZK) | 600 Ω at IZK = 0.25 mA - limits voltage deviation under light-load transients |
| Max Reverse Current (IR) | 0.1 μA at VR = 19.2 V - ensures minimal leakage in high-impedance bias networks |
| Power Dissipation | 500 mW at TL ≤ 50°C (3/8″ lead length) - constrains thermal design in compact layouts |
| Operating Temperature | -65°C to +175°C - supports aerospace, downhole, and industrial environments |
| Temperature Coefficient (αVZ) | +0.088 %/°C - quantifies predictable upward voltage drift with rising junction temperature |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; forward voltage ≤1.5 V @ 200 mA during conduction |
| Cathode | Banded end | Connected to higher-potential node; reverse-biased for Zener regulation; polarity must be observed |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N52xx series | Guarantees standardized electrical limits and mechanical interchangeability across manufacturers |
| Radiation-hardened construction | Inherently radiation tolerant per MicroNote 050 - suitable for space-grade and nuclear instrumentation |
| ESD-insensitive design | Qualified to MIL-STD-750 Method 1020 - eliminates need for handling precautions in assembly |
| Low capacitance | Typical <2 pF (per Figure 2) - preserves high-frequency signal integrity in RF biasing and timing circuits |
| Wide operating temperature range | -65°C to +175°C - enables deployment in automotive under-hood, oil/gas, and military systems |
Applications
| Power Supply Reference | Sensor Bias Network |
|---|---|
Use Scenario: Providing stable 24 V reference for op-amp comparators and ADC voltage references in isolated DC-DC converters. IC Role / Device Role / Timing Role: Voltage reference element establishing precise threshold and scaling points. Use Value: ±10% tolerance and +0.088 %/°C TC enable predictable error budgeting across temperature in closed-loop regulation. |
Use Scenario: Biasing bridge-based pressure or temperature sensors in industrial process controllers. IC Role / Device Role / Timing Role: Stable excitation source ensuring consistent sensor output linearity and repeatability. Use Value: Low 0.1 μA leakage at 19.2 V prevents loading of high-impedance sensor bridges and maintains measurement accuracy. |
| Overvoltage Clamp | Microcontroller Reset Circuit |
Use Scenario: Clamping transient surges on 24 V industrial I/O lines to protect downstream logic interfaces. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground during voltage spikes. Use Value: 500 mW power rating and robust -65°C to +175°C operation ensure reliable clamping under repeated surge events. |
Use Scenario: Generating clean reset pulse for 3.3 V or 5 V microcontrollers using resistor-Zener divider with RC delay. IC Role / Device Role / Timing Role: Precision voltage threshold detector triggering reset assertion when supply drops below safe level. Use Value: Sharp Zener knee and 600 Ω ZZK at 0.25 mA support fast, repeatable reset release timing without hysteresis drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4748A (ON Semiconductor) | 22 V nominal, ±5% tolerance (B suffix), 500 mW, DO-41 package - larger body, higher thermal resistance | Requires PCB pad redesign due to DO-41 footprint; better suited for higher-current regulation (>10 mA) | Select when tighter 5% tolerance and higher IZT = 10 mA are required, and board layout allows larger axial package |
| BZX55-C24 (Vishay) | 24 V nominal, ±5% tolerance (C suffix), 500 mW, DO-35 package - same footprint, lower ZZK (500 Ω max) | Superior low-current regulation stability; not radiation-hardened or MIL-screening compatible | Prefer for commercial-grade cost-sensitive designs where radiation hardness and extended temperature are not required |
Compared with 1N5252A, the 1N4748A offers tighter tolerance but demands layout changes, while BZX55-C24 matches the DO-35 footprint and improves impedance but lacks radiation hardening and military screening options - making 1N5252A optimal for high-reliability, wide-temperature, or space-constrained mil-aero applications.
Availability
1N5252A is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and overvoltage protection circuits requiring stable component supply with guaranteed long-term continuity.
Supply support for 1N5252A 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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xx series was designed specifically for precision voltage regulation in mission-critical systems where wide temperature operation, ESD immunity, and inherent radiation tolerance are mandatory - not general-purpose replacement diodes.
FAQ
What is the Zener voltage tolerance for 1N5252A?
The "A" suffix in 1N5252A denotes ±10% tolerance on the nominal 24 V Zener voltage, meaning the actual measured VZ at 5.2 mA falls between 21.6 V and 26.4 V at 25°C. This tolerance is guaranteed per JEDEC specification and verified during production testing - a key parameter for 1N5252A in reference and clamp applications where absolute voltage accuracy is constrained by system error budgets.
Does 1N5252A require special handling for ESD sensitivity?
No - the 1N5252A is explicitly rated as nonsensitive to ESD per MIL-STD-750 Method 1020, eliminating the need for static-safe workstations or packaging during assembly. This intrinsic robustness is built into the DO-35 glass package and internal structure, making 1N5252A suitable for high-volume manufacturing and field-repair scenarios without added ESD controls.
Can 1N5252A be used in surface-mount designs?
No - the 1N5252A is exclusively offered in the axial-leaded DO-35 (DO-204AH) through-hole package. For surface-mount equivalents, Microsemi provides the MLL5252B in DO-213AA (MELF) package; however, that part has different thermal and mechanical characteristics and is not a drop-in replacement for 1N5252A in existing through-hole layouts.
What is the maximum reverse leakage current for 1N5252A?
The maximum reverse leakage current (IR) for 1N5252A is 0.1 μA when tested at VR = 19.2 V (80% of nominal VZ), per the Electrical Characteristics table. This ultra-low leakage ensures minimal current draw in high-impedance bias networks and preserves accuracy in precision reference circuits - a confirmed specification for 1N5252A, not extrapolated from adjacent parts.
Is 1N5252A suitable for automotive under-hood applications?
Yes - the 1N5252A is rated for operation from -65°C to +175°C and qualified for thermal cycling and solderability per MIL-STD-750, making it appropriate for under-hood engine control units, transmission modules, and battery management systems. Its radiation hardness and ESD insensitivity further support reliability in electrically noisy automotive environments - key attributes confirmed for 1N5252A in the official Microsemi datasheet.
1N5252A 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):
- 24 V
- Tolerance:
- ±10%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 33 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 17.1 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)
1N5252A FAQ
1.How can I place an order for 1N5252A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5252A 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 1N5252A reliable?
The price and inventory of 1N5252A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5252A is usually 5 days.
3.What payment methods are accepted for 1N5252A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5252A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5252A?
1N5252A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5252A 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 1N5252A?
For technical support, including 1N5252A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5252A requirements.
6.How does Aetrix verify that 1N5252A is sourced from the original manufacturer or authorized distributors?
All 1N5252A 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 1N5252A meets industry standards.
7.What is the process for return or replacement of 1N5252A?
All 1N5252A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5252A, 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 1N5252A part is unused and in its original packaging.
Return procedure for 1N5252A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5252A Tags
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MMBZ5240B-7-F
Diodes Incorporated
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