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Microchip Technology 1N4575A/TR
- Part No.:
- 1N4575A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4575A/TR.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,328
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Product details
Overview
1N4575A/TR from Microsemi is a temperature-compensated 6.4 V Zener reference diode in DO-7 (DO-204AA) glass axial-leaded package, rated for 2.0 mA test current, 0.01 %/°C temperature coefficient, and 50 Ω dynamic impedance at 25 °C, used in precision voltage references for instrumentation and aerospace power supplies.
For engineers reviewing the 1N4575A/TR datasheet, 1N4575A/TR pinout, 1N4575A/TR application, or 1N4575A/TR equivalent, key selection criteria include its ±5% nominal voltage tolerance, hermetic glass packaging, -65 °C to +175 °C operating range, and MIL-PRF-19500/452 qualification readiness via prefix/suffix options.
Technical Context
The 1N4575A/TR implements a dual-junction temperature-compensated Zener structure optimized for minimal drift over -55 °C to +100 °C, with voltage regulation stabilized by internal metallurgical bonding and low thermal hysteresis. Its 6.4 V nominal output is maintained under 2.0 mA Zener test current with ≤2 µA reverse leakage at 3 V.
This device operates in reverse-biased mode with cathode band positive relative to anode, requiring no external biasing circuitry. It delivers stable reference performance without trimming, supporting applications where long-term drift <100 ppm/1000 h and low noise are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.4 V ±5% - defines primary reference level for analog signal conditioning and ADC/DAC biasing circuits |
| Zener Test Current (IZT) | 2.0 mA - operating point where voltage and temperature coefficient are specified and optimized |
| Temperature Coefficient (αVZ) | 0.01 %/°C - ensures <0.64 mV/°C drift across 0 to +75 °C ambient range |
| Dynamic Impedance (ZZT) | 50 Ω @ IZT - limits AC ripple coupling into reference node, critical for low-noise LDO feedback paths |
| Max Reverse Current (IR) | 2.0 µA @ 3 V - confirms low leakage below breakdown, enabling high-impedance sensing interfaces |
| Operating Temperature Range | -65 °C to +175 °C - supports deployment in downhole, avionics, and military-grade power systems |
| Package | DO-7 (DO-204AA) - hermetically sealed glass axial-leaded case with tin-lead plated leads per MIL-STD-750 |
Pinout & Package
DO-7 (DO-204AA) glass axial-leaded package with cathode band marking; leads are tin-lead plated and solderable per MIL-STD-750 Method 2026. Polarity requires cathode (banded end) to be biased positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference diode cathode-connected terminal | Connected to system ground or lowest potential node in shunt reference configuration |
| Cathode (banded end) | Reference diode anode-connected terminal | Bias-positive terminal delivering regulated 6.4 V output; connects to load and feedback networks |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation architecture | Dual-junction design achieving 0.01 %/°C TC over -55 °C to +100 °C, eliminating need for external compensation networks |
| Hermetic glass encapsulation | DO-7 package provides moisture resistance and long-term parameter stability in harsh environments |
| MIL-PRF-19500/452 qualification path | Supports JAN/JANTX/JANTXV versions with "-1" suffix (e.g., JANTX1N4575A-1), meeting screening and reliability requirements for defense programs |
| ESD robustness | Nonsensitive to ESD per MIL-STD-750 Method 1020 - enables handling without special static control in production lines |
Applications
| High-Accuracy Data Acquisition Systems | Aerospace Power Supply References |
|---|---|
Use Scenario: Precision 16-bit+ ADC front-end calibration and offset correction in ground station telemetry receivers. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 6.4 V bias for op-amp input stages and DAC reference inputs. Use Value: 0.01 %/°C TC and 50 Ω dynamic impedance minimize gain/offset drift across -40 °C to +85 °C operational envelope. |
Use Scenario: Voltage reference in radiation-tolerant DC-DC converter feedback loops aboard satellite power management units. IC Role / Device Role / Timing Role: Primary shunt reference for error amplifiers regulating 5 V and 3.3 V bus voltages in MIL-STD-704 compliant converters. Use Value: Hermetic DO-7 package and -65 °C to +175 °C rating ensure reliability during thermal cycling and vacuum exposure. |
| Industrial Process Control Transmitters | Military Fire-Control System Sensors |
Use Scenario: 4–20 mA loop-powered transmitter supplying excitation to RTD and strain gauge bridges. IC Role / Device Role / Timing Role: Stable reference for bridge excitation and analog signal conditioning circuitry in hazardous-area certified field devices. Use Value: Low 2.0 µA reverse leakage at 3 V prevents loading errors in high-impedance sensor interfaces. |
Use Scenario: On-board inertial measurement unit (IMU) reference for gyroscope and accelerometer bias calibration. IC Role / Device Role / Timing Role: Precision voltage source for analog front-end gain-setting resistors and ADC reference buffers. Use Value: MIL-PRF-19500 qualification pathway enables direct integration into JANTXV-requiring subsystems without redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4574A/TR | Same DO-7 package and 6.4 V nominal voltage, but 1.0 mA IZT and 0.0005 %/°C TC (vs. 2.0 mA / 0.01 %/°C for 1N4575A/TR) | Better TC suits ultra-stable lab equipment; lower IZT reduces power dissipation in battery-powered sensors | Select when TC <0.001 %/°C is mandatory and 1.0 mA bias is acceptable |
| 1N4576A/TR | Same 2.0 mA IZT and DO-7 package, but 0.005 %/°C TC and 50 Ω ZZT (vs. 0.01 %/°C for 1N4575A/TR) | Improved TC supports tighter reference stability in extended temperature industrial controllers | Select when enhanced TC is needed without changing layout or bias network |
Compared with 1N4575A/TR, 1N4574A/TR offers superior temperature stability at lower test current, while 1N4576A/TR provides intermediate TC improvement with identical bias requirements-both retain DO-7 footprint and hermetic construction for drop-in evaluation.
Availability
1N4575A/TR is available at Aetrix Electronics and suitable for high-reliability instrumentation, aerospace power supplies, and military sensor systems requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N4575A/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 analog and RF components for aerospace, defense, and industrial markets.
The 1N4575A/TR belongs to Microsemi's legacy 1N4565–1N4584A series of temperature-compensated Zener reference diodes, engineered specifically for precision voltage referencing in mission-critical systems where parameter stability over extreme temperature and time is non-negotiable.
FAQ
What is the Zener test current for 1N4575A/TR?
The 1N4575A/TR is specified at a Zener test current (IZT) of 2.0 mA. This current establishes the operating point for measuring its 6.4 V nominal voltage, 0.01 %/°C temperature coefficient, and 50 Ω dynamic impedance. Operating significantly above or below this value increases voltage drift and impedance variation, so bias networks should target 2.0 mA ±10% for optimal 1N4575A/TR performance.
Does 1N4575A/TR have military qualification?
The base 1N4575A/TR is not pre-qualified, but it is designed to meet MIL-PRF-19500/452 requirements when ordered with appropriate prefixes and suffixes-for example, JANTX1N4575A-1. That version undergoes screening including temperature cycling, burn-in, and parametric testing per military standards. The "TR" suffix denotes tape-and-reel packaging per EIA-296, independent of qualification level.
What is the maximum operating temperature for 1N4575A/TR?
The 1N4575A/TR has a maximum operating temperature of +175 °C and a minimum of -65 °C. This full -65 °C to +175 °C range is enabled by its hermetically sealed DO-7 glass package and internal metallurgical bonding. Derating applies above 70 °C ambient per Microsemi's thermal resistance data, but the 1N4575A/TR remains functional and within specification across the entire range when properly heatsinked or mounted on thermally stable substrates.
How does the temperature coefficient of 1N4575A/TR compare to other parts in the 1N45xx series?
The 1N4575A/TR has a temperature coefficient of 0.01 %/°C, which is higher than variants like 1N4574A/TR (0.0005 %/°C) but lower than 1N4565A/TR (0.01 %/°C at 0.5 mA). Within the 2.0 mA IZT group (1N4575–1N4579A), 1N4575A/TR represents the baseline TC option-others offer progressively lower coefficients (0.005, 0.002, 0.001, 0.0005 %/°C) at identical test current and package. All share the same 6.4 V nominal voltage and DO-7 form factor.
Is 1N4575A/TR compatible with lead-free soldering processes?
The 1N4575A/TR features tin-lead plated leads per MIL-STD-750 Method 2026 and is rated for soldering at 260 °C for 10 seconds maximum. While it is not RoHS-compliant due to lead content, it is compatible with standard SnPb reflow profiles. For lead-free assembly, Microsemi recommends verifying compatibility with specific Pb-free pastes and profiles; however, the DO-7 glass body may be susceptible to thermal shock beyond 235 °C peak, so process validation is required before deploying 1N4575A/TR in Pb-free lines.
1N4575A/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):
- 6.4 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 50 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4575A/TR FAQ
1.How can I place an order for 1N4575A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4575A/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 1N4575A/TR reliable?
The price and inventory of 1N4575A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4575A/TR is usually 5 days.
3.What payment methods are accepted for 1N4575A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4575A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4575A/TR?
1N4575A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4575A/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 1N4575A/TR?
For technical support, including 1N4575A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4575A/TR requirements.
6.How does Aetrix verify that 1N4575A/TR is sourced from the original manufacturer or authorized distributors?
All 1N4575A/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 1N4575A/TR meets industry standards.
7.What is the process for return or replacement of 1N4575A/TR?
All 1N4575A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4575A/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 1N4575A/TR part is unused and in its original packaging.
Return procedure for 1N4575A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4575A/TR Tags
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