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Microchip Technology 1N4570AUR-1/TR
- Part No.:
- 1N4570AUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4570AUR-1/TR.pdf
- Description:
- DIODE ZENER 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:160
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Product details
Overview
1N4570AUR-1/TR from Microsemi is a hermetically sealed, temperature-compensated Zener reference diode in DO-213AA (MELF) glass package, rated for 1.0 mA test current, ±100 mV voltage stability over −55°C to +100°C, and 100 Ω dynamic impedance; used in precision voltage references for aerospace-grade power supply monitoring and calibration circuits.
For engineers reviewing the 1N4570AUR-1/TR datasheet, 1N4570AUR-1/TR pinout, 1N4570AUR-1/TR application, or 1N4570AUR-1/TR equivalent, this part delivers low-drift, high-stability Zener regulation in surface-mount MELF format with verified MIL-PRF-19500/452 compliance for extended-temperature military and space applications.
Technical Context
This device belongs to the CDLL4565–CDLL4584A family of metallurgically bonded, double-plug Zener diodes optimized for low-current operation (0.5–4.0 mA). Its temperature compensation is achieved via internal series-connected junctions that counteract intrinsic Zener and avalanche drift.
The 1N4570AUR-1/TR is specified at 1.0 mA test current, exhibits ±100 mV max voltage deviation across −55°C to +100°C (per Note 1), and maintains 100 Ω max dynamic impedance (ZZT) - enabling stable reference performance in low-power, high-reliability analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | Not explicitly listed for 1N4570AUR-1/TR in provided data; inferred as matching CDLL4570A (1.0 mA test, ±100 mV stability band). |
| Test Current (IZT) | 1.0 mA - defines operating point for voltage specification and impedance measurement; enables low-power reference design. |
| Dynamic Impedance (ZZT) | 100 Ω max - limits AC error contribution under varying load or ripple, critical for high-PSRR analog references. |
| Voltage Stability (ΔVZ) | ±100 mV over −55°C to +100°C - ensures predictable reference accuracy without external trimming in wide-temperature deployments. |
| Tempco (TC) | ±0.01 %/°C - quantifies relative drift per degree; supports <0.1% total error budget in precision instrumentation. |
| Power Dissipation | 500 mW @ +50°C, derated 4 mW/°C above - sets thermal boundary for PCB layout and ambient derating in sealed enclosures. |
Pinout & Package
Package: DO-213AA (MELF, SOD-80, LL34), hermetically sealed glass case; axial leadless construction; cathode identified by band; lead finish: Tin/Lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias; connected to circuit ground or lower potential node in Zener mode. | Must be held at lower potential than cathode to maintain reverse-bias Zener operation; polarity reversal causes forward conduction. |
| Cathode | Current exit terminal during reverse breakdown; marked with band; connected to regulated output or reference node. | Defines regulated voltage node; requires stable current source/sink; sensitive to stray capacitance due to glass package geometry. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF package | DO-213AA construction ensures zero moisture ingress and long-term parameter stability in vacuum or high-humidity environments. |
| Temperature-compensated Zener | Double-plug metallurgical bonding achieves ±0.01 %/°C tempco - eliminates need for external compensation networks. |
| MIL-PRF-19500/452 qualified | Qualified to JAN, JANTX, JANTXV, JANS levels - validated for radiation-hardened, high-reliability defense and space programs. |
| Low-current operation | Specified at 1.0 mA IZT - enables use with high-value bias resistors, reducing quiescent power in battery-backed systems. |
Applications
| Aerospace Power Monitoring | Calibration Reference Source |
|---|---|
Use Scenario: Real-time voltage supervision in satellite power distribution units where ambient temperature swings exceed 150°C. IC Role / Device Role / Timing Role: Precision Zener reference providing stable feedback node for DC-DC converter error amplifiers. Use Value: ±100 mV stability over −55°C to +100°C ensures <0.5% output regulation error without recalibration across orbital thermal cycles. |
Use Scenario: On-board self-calibration of 16-bit ADCs in flight data recorders requiring traceable voltage standards. IC Role / Device Role / Timing Role: Primary voltage reference for DAC-based calibration signal generation. Use Value: 100 Ω ZZT minimizes noise coupling into reference path, preserving ENOB in metrology-grade acquisition. |
| High-Reliability Industrial PLCs | Radiation-Tolerant Sensor Interfaces |
Use Scenario: Analog input module reference in nuclear plant control systems operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Stable bias reference for isolated current-sense amplifier front-ends. Use Value: Hermetic DO-213AA package prevents parameter shift from long-term humidity exposure in sealed cabinets. |
Use Scenario: Front-end reference for gamma-ray spectrometer preamplifiers exposed to total ionizing dose >100 krad(Si). IC Role / Device Role / Timing Role: Low-drift voltage reference for charge-sensitive amplifier reset circuits. Use Value: MIL-qualified construction ensures no parametric degradation after radiation exposure, maintaining energy resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4570A | Identical electrical specs and package; same MIL-PRF-19500/452 qualification level; differs only in part numbering convention (CDLL vs. 1N prefix). | No functional difference; CDLL4570A is the manufacturer's preferred commercial/MIL dual-designation variant. | Select CDLL4570A when sourcing directly from Microsemi or authorized distributors with full MIL documentation traceability. |
| 1N4570AUR-1 | Omits "/TR" suffix - indicates tape-and-reel packaging absent; otherwise identical die, package, and spec compliance. | Suitable for manual prototyping or low-volume assembly where reel feed is unnecessary. | Choose 1N4570AUR-1/TR for automated SMT placement; choose 1N4570AUR-1 for bench evaluation or small-batch hand soldering. |
Compared with CDLL4570A and 1N4570AUR-1, the 1N4570AUR-1/TR offers identical Zener performance and MIL qualification but adds tape-and-reel packaging optimized for high-throughput SMT lines - making it the preferred choice for production-scale deployment in defense electronics.
Availability
1N4570AUR-1/TR is available at Aetrix Electronics and suitable for aerospace power monitoring, calibration reference sources, high-reliability industrial PLCs, and radiation-tolerant sensor interfaces requiring stable component supply under extended temperature and radiation stress conditions.
Supply support for 1N4570AUR-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 analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N4570AUR-1/TR belongs to Microsemi's temperature-compensated Zener reference diode product line, engineered specifically for precision voltage regulation in mission-critical systems operating across extreme temperature and radiation environments.
FAQ
What is the Zener voltage tolerance of the 1N4570AUR-1/TR?
The exact nominal Zener voltage is not specified in the provided data for 1N4570AUR-1/TR. However, per the CDLL4570A row in the table, it shares the same 1.0 mA test current, ±100 mV stability band over −55°C to +100°C, and ±0.01 %/°C temperature coefficient - indicating tight regulation within its designated family voltage grade. Full voltage binning data requires consulting the official Microsemi CDLL4570A datasheet.
Is the 1N4570AUR-1/TR RoHS compliant?
No - the 1N4570AUR-1/TR uses tin/lead lead finish and is manufactured to MIL-PRF-19500/452 specifications, which permit Pb-containing finishes for high-reliability applications. It is not RoHS-compliant; for Pb-free alternatives, consult Microchip's current-generation surface-mount Zener offerings with J-STD-020 reflow profiles.
What does the "/TR" suffix mean in 1N4570AUR-1/TR?
The "/TR" suffix denotes tape-and-reel packaging - confirming the 1N4570AUR-1/TR is supplied in EIA-481-compliant carrier tape optimized for automated SMT placement equipment. This distinguishes it from the same die in bulk or ammo-pack formats, ensuring consistent feeding and reduced handling damage in high-volume production.
Can the 1N4570AUR-1/TR replace standard Zener diodes like 1N4733A?
No - the 1N4570AUR-1/TR is a temperature-compensated, MIL-qualified reference diode with 1.0 mA test current and 100 Ω impedance, whereas 1N4733A is a general-purpose 5.1 V Zener rated at 49 mA with no tempco control. Substitution would cause significant voltage drift and instability; use only in designs explicitly requiring compensated, high-reliability reference performance.
What is the maximum power dissipation for the 1N4570AUR-1/TR at 100°C ambient?
At 100°C ambient, the 1N4570AUR-1/TR must be derated from its 500 mW rating at +50°C. With 4 mW/°C derating, the allowable dissipation is 500 mW − (50°C × 4 mW/°C) = 300 mW. Exceeding this risks thermal runaway or accelerated parameter shift, especially given its hermetic glass package's limited heat-spreading capability.
1N4570AUR-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):
- -
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4570AUR-1/TR FAQ
1.How can I place an order for 1N4570AUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4570AUR-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 1N4570AUR-1/TR reliable?
The price and inventory of 1N4570AUR-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 1N4570AUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4570AUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4570AUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4570AUR-1/TR?
1N4570AUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4570AUR-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 1N4570AUR-1/TR?
For technical support, including 1N4570AUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4570AUR-1/TR requirements.
6.How does Aetrix verify that 1N4570AUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4570AUR-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 1N4570AUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4570AUR-1/TR?
All 1N4570AUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4570AUR-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 1N4570AUR-1/TR part is unused and in its original packaging.
Return procedure for 1N4570AUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4570AUR-1/TR Tags
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