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Microchip Technology 1N5533CUR-1/TR
- Part No.:
- 1N5533CUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5533CUR-1/TR.pdf
- Description:
- DIODE ZENER 13V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
1N5533CUR-1/TR from Microsemi is a 13.0 V, ±5% tolerance, 500 mW glass MELF (DO-213AA) Zener diode optimized for precision voltage regulation in low-power analog circuits, power supply feedback loops, and reference voltage generation across industrial temperature ranges. It delivers 90 Ω dynamic impedance at 1 mA test current, 0.01 µA max reverse leakage at 10.5 V, and operates from –65 °C to +175 °C.
For engineers reviewing the 1N5533CUR-1/TR datasheet, 1N5533CUR-1/TR pinout, 1N5533CUR-1/TR application, or 1N5533CUR-1/TR equivalent, this page provides verified electrical parameters, military-grade qualification status (JANTXV), thermal derating behavior, and RoHS-compliant packaging details critical for high-reliability design-in and long-lifecycle sourcing.
Technical Context
This device belongs to Microsemi's MIL-PRF-19500/437-qualified 1N55xxBUR-1 family of hermetically sealed, metallurgically bonded Zener diodes. Its DO-213AA (SOD80/MLL34) MELF package enables stable thermal performance with RθJA = 300 °C/W on FR4 and RθJEC = 100 °C/W to end cap.
It operates with cathode band polarity, requires no external biasing circuitry, and exhibits minimal capacitance (<1.5 pF typical at 0 V) and low noise density (≤0.20 µV/√Hz at IZ = 250 µA), making it suitable for low-noise voltage references and signal conditioning stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 13.0 V at 1 mA test current - defines stable regulation point for feedback networks and reference rails. |
| Zener Tolerance | ±5% (B suffix) - ensures predictable voltage accuracy without post-selection in production. |
| Power Rating | 0.5 W steady-state - supports continuous operation up to 38.5 mA at 13 V with proper PCB thermal management. |
| Dynamic Impedance | 90 Ω at IZT = 1 mA - determines load regulation error under varying current conditions. |
| Reverse Leakage | 0.01 µA max at VR = 10.5 V - guarantees negligible current draw in standby or high-impedance sensing nodes. |
| Junction Temp Range | –65 °C to +175 °C - enables deployment in aerospace, downhole, and engine-control environments. |
| Noise Density | 0.20 µV/√Hz at IZ = 250 µA - critical for precision analog front-ends requiring low-voltage noise floors. |
Pinout & Package
Package: DO-213AA (MELF/SOD80/MLL34) glass surface-mount hermetic package with tin-lead or RoHS-compliant matte-tin end-cap plating; cathode identified by single black band; weight 0.04 g; tape-and-reel packaged (12 mm tape, "TR" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse-biased during regulation; must be held ≤10.5 V to avoid leakage. |
| Cathode (banded end) | Zener breakdown terminal / regulation output | Connected to regulated voltage rail; supplies stable 13.0 V when reverse current ≥ IZL = 15 mA. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability in harsh environments. |
| JANTXV qualification per MIL-PRF-19500/437 | Validated reliability for defense/aerospace applications including radiation hardness per MicroNote 050. |
| Hermetic glass MELF package | Provides moisture immunity and zero outgassing-critical for vacuum and sealed-system deployments. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Enables handling and assembly without special ESD controls, reducing manufacturing overhead. |
| Low capacitance (≤1.5 pF at 0 V) | Minimizes high-frequency loading in RF bias networks and fast-switching feedback paths. |
Applications
| Industrial Power Supply Feedback | Avionics Reference Voltage |
|---|---|
Use Scenario: Regulating output voltage in isolated DC-DC converters using optocoupler-coupled feedback loops. IC Role / Device Role / Timing Role: Zener diode providing precise 13.0 V reference to TL431 or optocoupler LED anode. Use Value: ±5% tolerance and 90 Ω dynamic impedance ensure <±1.5% output regulation over line/load/temperature. | Use Scenario: Generating stable bias voltage for analog sensor signal conditioning in flight control units. IC Role / Device Role / Timing Role: Low-noise 13.0 V reference source for op-amp rails and ADC reference buffers. Use Value: 0.20 µV/√Hz noise density and –65 °C to +175 °C operation support MIL-STD-810G environmental compliance. |
| Downhole Instrumentation Bias | Medical Imaging Detector Bias |
Use Scenario: Providing bias voltage to piezoelectric transducers in oil/gas well logging tools exposed to >150 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable Zener regulating voltage for amplifier gain-setting networks. Use Value: Hermetic DO-213AA package and JANTXV qualification guarantee parametric stability after 1000+ thermal cycles. | Use Scenario: Supplying calibrated bias to photodiode arrays in portable X-ray detectors requiring low-leakage references. IC Role / Device Role / Timing Role: Ultra-low-leakage (0.01 µA) Zener establishing dark-current compensation voltage. Use Value: Sub-nanoampere reverse current prevents signal corruption in high-impedance detector interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5533B-1 | Axial DO-35 package; same electrical specs but higher RθJA (350 °C/W); no tape-and-reel option. | Suitable for prototyping or through-hole boards; not for automated SMT assembly. | Select 1N5533B-1 only when manual assembly or legacy board compatibility is required. |
| SMF13A | Surface-mount SOD-123 package; 13 V ±5%; 1 W rating; higher IZM (77 mA); non-military qualified. | Better power handling but lacks MIL-PRF-19500/437 qualification and radiation hardness. | Choose SMF13A for commercial cost-sensitive designs where extended temperature range and radiation tolerance are not required. |
Compared with 1N5533CUR-1/TR, 1N5533B-1 offers identical regulation performance in axial form but limits SMT scalability, while SMF13A trades military reliability for higher power and lower cost-making 1N5533CUR-1/TR the sole choice for JANTXV-certified, hermetic, low-noise MELF applications.
Availability
1N5533CUR-1/TR is available at Aetrix Electronics and suitable for industrial power supply feedback, avionics reference voltage, and downhole instrumentation bias requiring stable component supply across extended temperature and long product lifecycles.
Supply support for 1N5533CUR-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 designed specifically for precision voltage regulation in mission-critical systems where hermetic sealing, thermal robustness, and MIL-PRF-19500/437 compliance are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N5533CUR-1/TR?
The 1N5533CUR-1/TR has a nominal Zener voltage of 13.0 V with a guaranteed ±5% tolerance, indicated by the "B" suffix in its nomenclature. This tolerance applies across the full operating temperature range of –65 °C to +175 °C and is validated per MIL-PRF-19500/437 test requirements for JANTXV-grade devices.
Is the 1N5533CUR-1/TR RoHS compliant?
Yes, the 1N5533CUR-1/TR is RoHS compliant (e3 marking), with matte-tin end-cap plating. RoHS compliance is available only on commercial-grade versions; JANTXV-qualified units retain tin-lead plating per MIL-STD-750, method 2026 solderability requirements.
What does the "TR" suffix signify in 1N5533CUR-1/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-481-1-A standard using 12 mm carrier tape. This format enables automated pick-and-place assembly and is specified for volume production use; the base part number 1N5533CUR-1 refers to the same die and package without packaging designation.
How is the cathode identified on the 1N5533CUR-1/TR?
The cathode of the 1N5533CUR-1/TR is marked by a single black band on the glass MELF body. During Zener operation, the banded (cathode) end must be held at a more positive potential than the unbanded (anode) end to achieve reverse-bias breakdown and voltage regulation.
What is the maximum reverse current specification for the 1N5533CUR-1/TR?
The 1N5533CUR-1/TR has a maximum reverse leakage current (IR) of 0.01 µA at VR = 10.5 V (80% of VZ). This ultra-low leakage is guaranteed for all units and supports high-impedance biasing and precision reference applications where parasitic current paths must be minimized.
1N5533CUR-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):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 11.7 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
1N5533CUR-1/TR FAQ
1.How can I place an order for 1N5533CUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5533CUR-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 1N5533CUR-1/TR reliable?
The price and inventory of 1N5533CUR-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 1N5533CUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5533CUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5533CUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5533CUR-1/TR?
1N5533CUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5533CUR-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 1N5533CUR-1/TR?
For technical support, including 1N5533CUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5533CUR-1/TR requirements.
6.How does Aetrix verify that 1N5533CUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5533CUR-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 1N5533CUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5533CUR-1/TR?
All 1N5533CUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5533CUR-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 1N5533CUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5533CUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5533CUR-1/TR Tags
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