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Microchip Technology 1N5252A/TR
- Part No.:
- 1N5252A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5252A/TR.pdf
- Description:
- DIODE ZENER 24V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,394
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Product details
Overview
1N5252A/TR from Microsemi is a 24 V, ±10% tolerance, 500 mW glass axial-lead Zener diode in DO-35 (DO-204AH) package, rated for 5.2 mA test current, 600 Ω dynamic impedance at 0.25 mA, and operating across –65 °C to +175 °C - used for precision voltage reference and low-power regulation in analog sensor signal conditioning circuits.
For engineers reviewing the 1N5252A/TR datasheet, 1N5252A/TR pinout, 1N5252A/TR application, or 1N5252A/TR equivalent, key selection criteria include Zener voltage stability over temperature, low leakage (<0.1 µA @ 19.2 V), minimal capacitance (~3 pF), and compatibility with manual or wave-soldered axial-lead PCB layouts.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable DC voltage under varying load and temperature conditions. Its 24 V nominal Zener voltage is specified at 5.2 mA test current (IZT), with dynamic impedance of 600 Ω measured at 0.25 mA (IZK) and thermal resistance of 250 °C/W junction-to-lead.
The device exhibits a positive temperature coefficient of +0.088 %/°C (αVZ), indicating voltage increases linearly with temperature - critical for biasing circuits requiring predictable drift compensation. It is RoHS-compliant when ordered with "e3" suffix and supports MIL-PRF-19500 screening with prefix options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 24 V ±10% at 5.2 mA - defines regulated output level for reference and clamp applications. |
| Power Dissipation | 500 mW at 25 °C, derated linearly above 50 °C - sets maximum continuous power handling on standard leaded PCBs. |
| Zener Impedance (ZZT) | 600 Ω at IZK = 0.25 mA - determines regulation stiffness under light-load or transient conditions. |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 19.2 V - ensures minimal error current in high-impedance reference nodes. |
| Temperature Coefficient (αVZ) | +0.088 %/°C - quantifies voltage drift per degree Celsius, enabling thermal error budgeting. |
| Operating Temperature | –65 °C to +175 °C - supports deployment in automotive under-hood, industrial control, and aerospace environments. |
| Package | DO-35 (DO-204AH) glass axial-leaded - enables through-hole mounting with 0.2 g mass and 3/8″ lead length thermal path. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by color band; designed for through-hole insertion and wave soldering at ≤260 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation. |
| Cathode | Banded end | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener series | Guarantees compliance with industry-standard electrical limits and mechanical dimensions for 1N52xx family interchangeability. |
| Low capacitance (~3 pF) | Minimizes high-frequency loading in RF detector or timing reference circuits without filtering degradation. |
| Radiation-hardened construction | Inherently radiation-tolerant per MicroNote 050 - suitable for space-qualified or high-reliability systems without additional shielding. |
| ESD-insensitive design | Passes MIL-STD-750 Method 1020 - eliminates need for ESD protection circuitry in handling and assembly. |
| Tape-and-reel packaging (TR) | Enables automated pick-and-place for production assembly while maintaining axial-lead orientation integrity. |
Applications
| Industrial Sensor Signal Conditioning | Automotive Cabin Control Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode provides fixed 24 V reference for Wheatstone bridge biasing and ADC reference scaling. Use Value: Maintains <±0.5% output variation across –40 °C to +85 °C ambient due to tight αVZ and low IR drift. |
Use Scenario: Generating stable 24 V rail for HVAC actuator microcontroller reset supervision in passenger compartment ECUs. IC Role / Device Role / Timing Role: Functions as overvoltage clamp and brown-out detection threshold element in power monitor circuit. Use Value: Survives 175 °C under-hood transients and delivers repeatable trip point with <0.1 µA leakage at 19.2 V. |
| Aerospace Power Sequencing | Medical Diagnostic Equipment Biasing |
Use Scenario: Providing isolated 24 V reference for FPGA configuration voltage monitors in satellite payload power management units. IC Role / Device Role / Timing Role: Serves as radiation-hardened voltage reference in non-redundant sequencing logic. Use Value: Delivers guaranteed performance after 100 krad(Si) total ionizing dose exposure per MicroNote 050. |
Use Scenario: Setting precise bias points for photodiode amplifier stages in portable ultrasound front-end ASICs. IC Role / Device Role / Timing Role: Acts as low-noise, low-capacitance voltage clamp to prevent amplifier saturation during pulse echo recovery. Use Value: Limits transient overshoot to <50 mV with 3 pF junction capacitance and 600 Ω dynamic impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5252B/TR | ±5% tolerance (vs. ±10% for 1N5252A/TR); identical VZ, IZT, ZZT, and package. | Higher precision required in metrology-grade references where 1.2 V absolute tolerance is unacceptable. | Select 1N5252B/TR when tighter initial calibration is needed without changing layout or thermal design. |
| MMBZ5252BS-7-F | Surface-mount SOD-123 package; same 24 V ±10%, but lower 250 mW rating and 1000 Ω ZZT at 0.25 mA. | Used in space-constrained consumer electronics where board area is prioritized over power margin. | Choose MMBZ5252BS-7-F only if PCB real estate is critical and 250 mW dissipation suffices for the target load. |
Compared with 1N5252B/TR and MMBZ5252BS-7-F, the 1N5252A/TR offers optimal balance of cost, ruggedness, and thermal performance in through-hole designs - especially where high-temperature reliability, radiation tolerance, or legacy footprint compatibility is required.
Availability
1N5252A/TR is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive cabin control reference, aerospace power sequencing, and medical diagnostic equipment biasing requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for 1N5252A/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 1N52xx series was developed for military, aerospace, and industrial applications demanding proven JEDEC-registered Zener performance, wide temperature operation, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance for 1N5252A/TR?
The 1N5252A/TR has a nominal Zener voltage of 24 V with a guaranteed tolerance of ±10%, meaning the actual breakdown voltage falls between 21.6 V and 26.4 V at 5.2 mA test current and 25 °C. This tolerance is defined by the "A" suffix per Microsemi's documentation and applies across the full operating temperature range.
Does 1N5252A/TR require heatsinking in standard PCB layouts?
No, the 1N5252A/TR does not require external heatsinking when operated within its 500 mW power limit and with ≥3/8″ (10 mm) lead length from the glass body. Its thermal resistance is 250 °C/W junction-to-lead, allowing safe operation up to 50 °C ambient before derating begins - typical for most through-hole analog reference designs.
Can 1N5252A/TR be used in surface-mount assemblies?
The 1N5252A/TR is a DO-35 axial-leaded through-hole device and is not designed for direct surface-mount assembly. For SMT equivalents, Microsemi offers the MLL5252B in DO-213AA (MELF) package; however, 1N5252A/TR requires manual or wave soldering into plated-through holes with appropriate pad and trace geometry.
What is the maximum reverse leakage current for 1N5252A/TR?
The maximum reverse leakage current (IR) for 1N5252A/TR is 0.1 µA when tested at VR = 19.2 V (80% of nominal VZ), per the Electrical Characteristics table on page 1 of the Microsemi datasheet. This low leakage ensures minimal error current in high-impedance reference divider networks.
Is 1N5252A/TR compliant with RoHS directives?
Yes, the 1N5252A/TR is RoHS compliant when ordered with the "e3" suffix (e.g., 1N5252Ae3/TR). The base part number without "e3" uses traditional tin-lead plating; RoHS compliance requires explicit ordering of the e3 variant, which features annealed matte-tin plating per MIL-STD-750 Method 2026.
1N5252A/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):
- 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/TR FAQ
1.How can I place an order for 1N5252A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5252A/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 1N5252A/TR reliable?
The price and inventory of 1N5252A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5252A/TR is usually 5 days.
3.What payment methods are accepted for 1N5252A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5252A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5252A/TR?
1N5252A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5252A/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 1N5252A/TR?
For technical support, including 1N5252A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5252A/TR requirements.
6.How does Aetrix verify that 1N5252A/TR is sourced from the original manufacturer or authorized distributors?
All 1N5252A/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 1N5252A/TR meets industry standards.
7.What is the process for return or replacement of 1N5252A/TR?
All 1N5252A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5252A/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 1N5252A/TR part is unused and in its original packaging.
Return procedure for 1N5252A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5252A/TR Tags
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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