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Microchip Technology 1N5542DUR-1/TR
- Part No.:
- 1N5542DUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5542DUR-1/TR.pdf
- Description:
- DIODE ZENER 24V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:183
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Product details
Overview
1N5542DUR-1/TR from Microsemi is a 24.0 V ±1% low-voltage avalanche Zener diode in DO-213AA (MELF) glass package, rated for 500 mW steady-state power dissipation, with 100 Ω dynamic impedance at 1 mA test current and 0.01 µA reverse leakage at 19.2 V. It delivers precision voltage regulation in space-constrained analog reference and power-supply feedback circuits.
For engineers reviewing the 1N5542DUR-1/TR datasheet, 1N5542DUR-1/TR pinout, 1N5542DUR-1/TR application, or 1N5542DUR-1/TR equivalent, key selection criteria include its ±1% Zener tolerance (D suffix), hermetically sealed MELF construction, MIL-PRF-19500/437 JANTXV qualification readiness, low noise density (16 µV/√Hz), and thermal stability across –65 °C to +175 °C junction temperature range.
Technical Context
This device operates as a two-terminal shunt voltage regulator, conducting in reverse breakdown when cathode voltage exceeds anode by ≥24.0 V. Its metallurgically bonded junction ensures stable Zener voltage under thermal cycling and radiation exposure per MicroNote 050.
The DO-213AA MELF package provides minimal parasitic capacitance (typ. 2.5 pF at 0 V), low thermal resistance (100 °C/W junction-to-end-cap), and compatibility with reflow soldering up to 260 °C for 10 s - enabling use in high-reliability military and aerospace power conditioning stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 24.0 V ±1% at IZT = 1 mA - enables precise 24 V rail sensing with <±0.24 V variation over production lot. |
| Power Dissipation PD | 0.5 W at TEC < 125 °C - supports continuous regulation in compact PCB layouts without forced cooling. |
| Dynamic Impedance ZZT | 100 Ω at IZT = 1 mA - limits output voltage shift to ≤100 mV per 1 mA load transient, critical for stable feedback loops. |
| Reverse Leakage IR | 0.01 µA at VR = 19.2 V - ensures negligible error current in high-impedance reference dividers. |
| Noise Density ND | 16 µV/√Hz (1–3 kHz band) - maintains signal integrity in low-noise instrumentation amplifier references. |
| Junction Temp Range | –65 °C to +175 °C - qualified for engine control units, downhole tools, and satellite power subsystems. |
Pinout & Package
DO-213AA (MELF) glass package: hermetically sealed cylindrical body with tin-lead or RoHS-compliant matte-tin plated end caps; cathode indicated by single black band; polarity: banded end positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference Ground Node | Connected to system ground or lower-potential node; carries full Zener current during regulation. |
| Cathode (banded end) | Regulated Output Node | Provides stable 24.0 V reference relative to anode; must be biased >24.0 V to initiate conduction. |
Key Features
| Feature | Design Value |
|---|---|
| ±1% Zener tolerance (D suffix) | Guarantees VZ between 23.76 V and 24.24 V at 25 °C, eliminating post-production trimming in precision voltage monitors. |
| MIL-PRF-19500/437 qualification path | Supports JAN/JANTX/JANTXV screening - required for defense avionics and launch vehicle power systems. |
| Metallurgical bond construction | Prevents delamination under thermal shock and neutron irradiation, ensuring long-term parametric stability in harsh environments. |
| Low 2.5 pF capacitance at 0 V | Minimizes phase shift in high-frequency feedback networks, preserving loop stability in switching regulator error amplifiers. |
Applications
| Industrial Power Supply Feedback | Aerospace Voltage Reference |
|---|---|
Use Scenario: Regulating output of isolated DC-DC converters in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Shunt reference in TL431-based optocoupler feedback loop. Use Value: ±1% tolerance ensures ±0.5% output voltage accuracy across line/load/temperature, meeting IEC 61000-6-4 immunity requirements. | Use Scenario: Providing stable 24 V bias for radiation-hardened op-amps in satellite telemetry conditioning circuits. IC Role / Device Role / Timing Role: Primary voltage reference for ADC front-end gain calibration. Use Value: Hermetic MELF package and inherent radiation hardness enable >100 krad(Si) TID tolerance without derating. |
| Downhole Sensor Excitation | Military Radio Bias Network |
Use Scenario: Supplying excitation voltage to piezoresistive pressure transducers in oil/gas well logging tools. IC Role / Device Role / Timing Role: Temperature-stable Zener source for Wheatstone bridge bias. Use Value: 175 °C max junction temperature and low ∆VZ/°C drift allow operation at 150 °C ambient without external heatsinking. | Use Scenario: Generating clean 24 V local supply for RF power amplifier bias sequencing in tactical HF radios. IC Role / Device Role / Timing Role: Low-noise shunt regulator in LDO pre-regulator stage. Use Value: 16 µV/√Hz noise density prevents AM sideband degradation in 3–30 MHz transmit paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5542BUR-1/TR | ±5% tolerance (B suffix), same VZ, IZT, package, and qualification base. | Acceptable where ±1.2 V regulation window suffices; lower cost for non-critical rails. | Select when budget constraints outweigh need for tight tolerance in non-safety-critical subsystems. |
| SMF24A | Surface-mount SOD-123 package, 24 V ±5%, 1 W rating, AEC-Q200 qualified. | Higher power handling but larger footprint and no MIL-spec path; automotive-grade only. | Choose for automotive ECUs requiring higher surge immunity but not military environmental compliance. |
Compared with 1N5542BUR-1/TR and SMF24A, the 1N5542DUR-1/TR uniquely combines ±1% tolerance, hermetic MELF packaging, and MIL-PRF-19500 qualification - making it irreplaceable in spaceflight power sequencers and nuclear instrumentation where parametric drift and radiation-induced failure are unacceptable.
Availability
1N5542DUR-1/TR is available at Aetrix Electronics and suitable for industrial power supplies, aerospace telemetry systems, downhole sensor modules, and military radio bias networks requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for 1N5542DUR-1/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 Corporation (now part of Microchip Technology) designs high-reliability semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened and high-temperature devices.
The 1N55xxBUR-1 series was developed to meet MIL-PRF-19500/437 requirements for low-power, precision Zener regulation in mission-critical analog subsystems where hermeticity and parametric stability are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5542DUR-1/TR?
The 1N5542DUR-1/TR has a nominal Zener voltage of 24.0 V with a guaranteed tolerance of ±1%, denoted by the "D" suffix in the part number. This tolerance is validated per MIL-PRF-19500/437 test methods and applies at 25 °C with IZT = 1 mA. The 1N5542DUR-1/TR's tight tolerance eliminates need for external trimming in precision voltage monitor circuits.
Is the 1N5542DUR-1/TR qualified to military specifications?
Yes, the 1N5542DUR-1/TR is manufactured to the base specification MIL-PRF-19500/437 and supports JAN, JANTX, and JANTXV qualification levels upon order. Its internal metallurgical bond, hermetic DO-213AA package, and full parameter testing make the 1N5542DUR-1/TR suitable for defense avionics and spaceflight hardware requiring certified reliability.
What is the maximum operating temperature for the 1N5542DUR-1/TR?
The 1N5542DUR-1/TR has a junction and storage temperature range of –65 °C to +175 °C. Its thermal resistance junction-to-end-cap is 100 °C/W, allowing full 0.5 W power dissipation at end-cap temperatures below 125 °C. This makes the 1N5542DUR-1/TR viable in downhole tools and engine bay electronics where ambient temperatures exceed 150 °C.
Does the 1N5542DUR-1/TR have RoHS compliance options?
The 1N5542DUR-1/TR is available in RoHS-compliant versions (e3 marking) for commercial-grade applications only. Military-grade variants retain tin-lead plating per MIL-STD-750. The RoHS-compliant 1N5542DUR-1/TR uses matte-tin end-cap plating and meets JEDEC J-STD-020 moisture sensitivity level 1, supporting standard reflow profiles.
What is the noise performance of the 1N5542DUR-1/TR?
The 1N5542DUR-1/TR exhibits a typical noise density of 16 µV/√Hz measured in a 1–3 kHz band at IZ = 250 µA. This low broadband noise is critical for high-resolution data acquisition systems. The 1N5542DUR-1/TR's glass MELF construction and metallurgical bond contribute to this performance by minimizing microphonic and thermal noise sources.
1N5542DUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 21.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N5542DUR-1/TR FAQ
1.How can I place an order for 1N5542DUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5542DUR-1/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 1N5542DUR-1/TR reliable?
The price and inventory of 1N5542DUR-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5542DUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5542DUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5542DUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5542DUR-1/TR?
1N5542DUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5542DUR-1/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 1N5542DUR-1/TR?
For technical support, including 1N5542DUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5542DUR-1/TR requirements.
6.How does Aetrix verify that 1N5542DUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5542DUR-1/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 1N5542DUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5542DUR-1/TR?
All 1N5542DUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5542DUR-1/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 1N5542DUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5542DUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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