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Microchip Technology 1N5527DUR-1/TR
- Part No.:
- 1N5527DUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5527DUR-1/TR.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
1N5527DUR-1/TR from Microsemi is a 7.5 V ±1% tolerance, 500 mW glass MELF (DO-213AA) Zener diode optimized for precision voltage regulation in low-power analog and reference circuits. It delivers 35 Ω dynamic impedance at 1 mA test current, 0.05 µA reverse leakage at 6.0 V, and operates across –65 °C to +175 °C junction temperature. Used in voltage reference supplies for instrumentation and aerospace power conditioning.
For engineers reviewing the 1N5527DUR-1/TR datasheet, 1N5527DUR-1/TR pinout, 1N5527DUR-1/TR application, or 1N5527DUR-1/TR equivalent, key selection criteria include tight 1% Zener tolerance, hermetically sealed DO-213AA package, MIL-PRF-19500/437 JANTXV qualification, low noise density (0.05 µV/√Hz), and metallurgical bond construction for thermal stability.
Technical Context
This device is a low-voltage, low-noise Zener diode with a nominal breakdown voltage of 7.5 V at 1 mA (IZT), exhibiting 35 Ω dynamic impedance (ZZT) and 0.65 V regulation factor (∆VZ) between IZT and IZL. Its metallurgically bonded construction ensures stable operation under thermal cycling and radiation exposure.
Designed for surface-mount use in DO-213AA (SOD80/MLL34) MELF package, it features cathode band polarity marking, tin-lead or RoHS-compliant matte-tin end-cap plating, and is qualified to JAN/JANTX/JANTXV levels per MIL-PRF-19500/437. Reverse leakage is guaranteed ≤0.05 µA at VR = 6.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V ±1% at IZT = 1 mA - enables precise voltage reference generation with minimal calibration drift |
| Power Dissipation (PD) | 0.5 W - supports stable regulation in compact PCB layouts without forced cooling |
| Dynamic Impedance (ZZT) | 35 Ω at IZT = 1 mA - ensures low output impedance for high-PSRR analog references |
| Reverse Leakage (IR) | ≤0.05 µA at VR = 6.0 V - minimizes error current in high-impedance bias networks |
| Junction Temperature Range | –65 °C to +175 °C - suitable for extended-temperature avionics and downhole electronics |
| Noise Density (ND) | 0.05 µV/√Hz - critical for low-noise instrumentation amplifier references |
| Regulation Factor (∆VZ) | 0.65 V - quantifies voltage shift between 1 mA and 0.25 mA operating points |
Pinout & Package
Hermetically sealed glass DO-213AA (MELF/SOD80/MLL34) surface-mount package with axial symmetry and cathode band marking. End caps are solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection during forward bias; regulated output node during reverse breakdown | Must be held positive relative to anode to achieve 7.5 V regulation; polarity reversal causes forward conduction at ~1.1 V |
| Anode (unbanded end) | Reference ground node in Zener configuration; forward cathode in diode mode | Serves as circuit common point; thermal expansion mismatch with PCB must be managed due to +6 PPM/°C COE |
Key Features
| Feature | Design Value |
|---|---|
| 1% Zener voltage tolerance (D suffix) | Guarantees VZ within 7.425–7.575 V at 25 °C, reducing need for post-assembly trimming in precision references |
| Metallurgical bond construction | Eliminates die attach voids and interfacial delamination, improving long-term stability under thermal shock and vibration |
| JANTXV qualification per MIL-PRF-19500/437 | Validated for high-reliability aerospace and defense applications with full lot traceability and screening |
| Low noise density (0.05 µV/√Hz) | Enables use in ultra-low-noise voltage references for 24-bit ADCs and precision DAC buffers |
| Hermetic glass MELF package | Provides moisture immunity and zero outgassing-critical for vacuum and space-grade assemblies |
Applications
| Instrumentation Reference Supply | Aerospace Power Monitor |
|---|---|
Use Scenario: Provides stable 7.5 V reference for 24-bit sigma-delta ADC front-end biasing in portable multimeters and calibration standards. IC Role / Device Role / Timing Role: Precision shunt voltage reference establishing absolute measurement scale. Use Value: 1% tolerance and 0.05 µV/√Hz noise ensure <±0.005% measurement accuracy over –40 °C to +85 °C. |
Use Scenario: Monitors 28 V aircraft bus voltage via resistive divider, feeding regulated 7.5 V to comparator input in fault-detection circuitry. IC Role / Device Role / Timing Role: High-stability Zener clamp protecting downstream logic from supply transients. Use Value: JANTXV qualification and –65 °C to +175 °C operation ensure reliability across flight envelope extremes. |
| Downhole Sensor Biasing | Radiation-Hardened Telemetry |
Use Scenario: Supplies bias current to piezoresistive pressure transducers in oil/gas well logging tools exposed to >150 °C ambient. IC Role / Device Role / Timing Role: Temperature-stable voltage reference enabling ratiometric sensor excitation. Use Value: Metallurgical bond and DO-213AA hermeticity prevent parameter shift under thermal cycling and H2S exposure. |
Use Scenario: Generates reference voltage for telemetry modulator ICs in satellite attitude control systems subject to total ionizing dose >100 krad(Si). IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining reference integrity in space radiation environment. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in LEO missions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5527BUR-1/TR | ±5% tolerance (B suffix), same 7.5 V nominal, identical DO-213AA package and metallurgical bond | Higher initial calibration uncertainty; requires tighter resistor matching in reference dividers | Select when cost sensitivity outweighs need for 1% tolerance and system-level trimming is acceptable |
| 1N5527CUR-1/TR | ±2% tolerance (C suffix), same 7.5 V nominal, identical package and qualification level | Intermediate tolerance offering better stability than B-suffix but lower cost than D-suffix | Choose for industrial-grade instrumentation where 0.15 V VZ window balances performance and procurement flexibility |
Compared with 1N5527BUR-1/TR and 1N5527CUR-1/TR, the 1N5527DUR-1/TR provides the tightest voltage tolerance (±1%), enabling higher absolute accuracy in uncalibrated systems and reducing post-manufacture test time-critical for high-volume aerospace production.
Availability
1N5527DUR-1/TR is available at Aetrix Electronics and suitable for aerospace power monitoring, downhole sensor biasing, and radiation-hardened telemetry requiring stable component supply with full MIL-spec traceability and extended-temperature performance.
Supply support for 1N5527DUR-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) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and military-qualified analog and mixed-signal components.
The 1N55xxBUR-1 series was developed to meet stringent MIL-PRF-19500/437 requirements for low-voltage Zener regulation in aerospace, defense, and energy exploration systems demanding hermeticity, thermal robustness, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance of the 1N5527DUR-1/TR?
The 1N5527DUR-1/TR has a Zener voltage tolerance of ±1%, indicated by the "D" suffix in its part number. This guarantees a nominal 7.5 V breakdown voltage within the range of 7.425 V to 7.575 V when measured at IZT = 1 mA and TA = 25 °C. The tolerance is fully specified and tested per MIL-PRF-19500/437 for JANTXV-grade units.
Is the 1N5527DUR-1/TR qualified to military specifications?
Yes, the 1N5527DUR-1/TR is qualified to MIL-PRF-19500/437 at the JANTXV reliability level. This includes full screening for temperature cycling, mechanical shock, vibration, and burn-in, with lot traceability and certified test reports. The "DUR-1" nomenclature confirms surface-mount packaging with metallurgical bond and JANTXV qualification.
What package type does the 1N5527DUR-1/TR use?
The 1N5527DUR-1/TR uses the DO-213AA (also known as SOD80 or MLL34) glass MELF package. It is a hermetically sealed, cylindrical surface-mount device with tin-lead or RoHS-compliant matte-tin end-cap plating, measuring 3.30–3.71 mm in length and 1.60–1.70 mm in diameter.
What is the maximum reverse leakage current for the 1N5527DUR-1/TR?
The maximum reverse leakage current (IR) for the 1N5527DUR-1/TR is 0.05 µA at VR = 6.0 V and TA = 25 °C. This value is guaranteed per the electrical characteristics table in Microsemi's T4-LDS-0037 Rev 2 datasheet and applies specifically to the D-suffix variant with 1% tolerance.
Does the 1N5527DUR-1/TR have radiation-hardened properties?
Yes, the 1N5527DUR-1/TR exhibits inherent radiation hardness as documented in Microsemi's MicroNote 050. Its glass-encapsulated, metallurgically bonded structure provides tolerance to total ionizing dose (TID) exceeding 100 krad(Si), making it suitable for space and nuclear applications without additional shielding or derating.
1N5527DUR-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):
- 7.5 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6.8 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
1N5527DUR-1/TR FAQ
1.How can I place an order for 1N5527DUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5527DUR-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 1N5527DUR-1/TR reliable?
The price and inventory of 1N5527DUR-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 1N5527DUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5527DUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5527DUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5527DUR-1/TR?
1N5527DUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5527DUR-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 1N5527DUR-1/TR?
For technical support, including 1N5527DUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5527DUR-1/TR requirements.
6.How does Aetrix verify that 1N5527DUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5527DUR-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 1N5527DUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5527DUR-1/TR?
All 1N5527DUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5527DUR-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 1N5527DUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5527DUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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