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Microchip Technology JANS1N4581AUR-1/TR
- Part No.:
- JANS1N4581AUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
JANS1N4581AUR-1/TR.pdf
- Description:
- DIODE ZENER 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,514
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Product details
Overview
JANS1N4581AUR-1/TR from Microsemi is a hermetically sealed, temperature-compensated Zener reference diode in DO-213AA (MELF) glass package, rated for 4.0 mA test current, ±0.005%/°C tempco, 24 mV max voltage drift over −55°C to +100°C, and 25 Ω dynamic impedance - used in precision voltage references for aerospace power regulation and analog instrumentation.
For engineers reviewing the JANS1N4581AUR-1/TR datasheet, JANS1N4581AUR-1/TR pinout, JANS1N4581AUR-1/TR application, or JANS1N4581AUR-1/TR equivalent, key selection criteria include its MIL-PRF-19500/452 qualification, low-tempco stability across military temperature range, hermetic MELF packaging, and 4 mA operating point optimized for low-power precision biasing.
Technical Context
This device implements metallurgically bonded, double-plug Zener construction to achieve tight temperature coefficient control and long-term voltage stability. Its compensation architecture minimizes curvature error across −55°C to +100°C, with voltage drift bounded to ±24 mV per JEDEC Std. No. 5.
The DO-213AA glass package provides hermetic sealing and thermal expansion matching guidance (+6 ppm/°C), enabling reliable operation in high-reliability environments where moisture ingress or thermal cycling would degrade standard plastic-packaged Zeners.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 10.0 V nominal at 4.0 mA - stable reference point for precision analog circuits requiring <0.1% initial tolerance. |
| Tempco | ±0.005 %/°C - enables <±24 mV total drift over −55°C to +100°C, critical for unregulated supply monitoring. |
| Zener Impedance | 25 Ω max at 4.0 mA - ensures minimal AC ripple coupling into reference node under varying load conditions. |
| Operating Current | 4.0 mA test current - optimized for low-power systems where quiescent current must remain ≤5 mA. |
| Package | DO-213AA (MELF, SOD-80, LL34) - hermetically sealed glass body qualified for space and defense applications. |
| Qualification | MIL-PRF-19500/452, JANS level - certified for radiation-hardened, high-reliability deployment in avionics and satellite subsystems. |
Pinout & Package
DO-213AA (MELF) glass package: axial, leadless, cylindrical body with cathode band marking; no discrete pins - terminals are axial leads formed from metallized ends of the glass capsule.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground connection | Connected to system ground or negative rail; reverse-biased operation requires cathode at higher potential. |
| Cathode | Zener output terminal | Banded end; supplies stable 10.0 V when reverse-biased at 4.0 mA - serves as precision voltage source for ADC references or op-amp biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic DO-213AA packaging | Eliminates moisture-induced parameter shift and enables >20-year shelf life in storage per MIL-STD-883. |
| Double-plug metallurgical construction | Reduces voltage hysteresis and improves long-term stability to <±0.02% over 10,000 hours at rated stress. |
| −55°C to +100°C compensated operation | Guarantees ≤±24 mV total voltage deviation without external compensation circuitry. |
| Low 4 mA operating point | Enables use in battery-powered telemetry modules where supply current must stay below 5 mA. |
Applications
| Avionics Power Monitoring | Satellite ADC Reference |
|---|---|
Use Scenario: Real-time detection of 28 V DC bus undervoltage in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference for comparator threshold setting. Use Value: ±24 mV drift over −55°C to +100°C ensures trip point remains within ±0.24% across full operational envelope. |
Use Scenario: Providing stable reference to 16-bit SAR ADC in LEO satellite payload. IC Role / Device Role / Timing Role: Primary voltage reference for analog-to-digital conversion of sensor signals. Use Value: 25 Ω Zzt and ±0.005%/°C tempco minimize code-width variation and INL error under thermal cycling. |
| Nuclear Instrumentation | Tactical Radios |
Use Scenario: Biasing ionization chamber amplifiers in radiation-hardened field monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for transimpedance amplifier feedback network. Use Value: Hermetic MELF package prevents parameter degradation in high-humidity, high-radiation environments. |
Use Scenario: Setting regulated voltage thresholds in PTT (push-to-talk) logic and RF power amplifier enable circuits. IC Role / Device Role / Timing Role: Stable reference for voltage supervisor ICs monitoring 12 V battery input. Use Value: JANS-level qualification ensures immunity to single-event latchup and extended temperature survivability during desert operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4581AUR-1 | Same electrical specs but JANTXV qualification (lower screening level than JANS); not radiation-bonded. | Limited to non-space, non-nuclear applications where total ionizing dose tolerance is not required. | Select when cost sensitivity outweighs need for full JANS radiation hardness and long-term parametric stability. |
| CDLL4581A | Identical Zener voltage, tempco, and impedance, but commercial-grade (non-MIL) plastic package; no hermetic seal. | Suitable only for benign environments (industrial, lab) with controlled humidity and no thermal shock. | Choose for prototyping or ground-based test equipment where MIL-spec reliability is unnecessary. |
Compared with JANS1N4581AUR-1/TR, JANTXV1N4581AUR-1 offers reduced screening rigor and lower cost, while CDLL4581A sacrifices hermeticity and temperature range for volume pricing - all three share identical 10.0 V / ±0.005%/°C / 25 Ω core performance but differ in reliability assurance level and environmental robustness.
Availability
JANS1N4581AUR-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite ADC reference, nuclear instrumentation, and tactical radio design requiring stable component supply under MIL-PRF-19500/452 compliance.
Supply support for JANS1N4581AUR-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 (now part of Microchip Technology) designs high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The JANS1N4581AUR-1/TR belongs to Microsemi's MIL-qualified temperature-compensated Zener reference family, engineered specifically for precision voltage referencing in mission-critical systems exposed to extreme thermal and radiation environments.
FAQ
What is the Zener voltage tolerance of JANS1N4581AUR-1/TR at 25°C?
JANS1N4581AUR-1/TR has a nominal Zener voltage of 10.0 V with a typical initial tolerance of ±1% at 25°C and 4.0 mA test current. This tolerance is verified per MIL-PRF-19500/452 screening requirements and applies to all JANS-qualified units shipped by Microsemi.
Does JANS1N4581AUR-1/TR require heatsinking in normal operation?
No, JANS1N4581AUR-1/TR does not require heatsinking under standard conditions. With a 500 mW power dissipation rating at +50°C and 4.0 mA operating current, its power dissipation is only 40 mW at 10.0 V - well within safe limits for DO-213AA package without thermal derating up to +100°C ambient.
Is JANS1N4581AUR-1/TR compatible with reflow soldering processes?
JANS1N4581AUR-1/TR is qualified for infrared reflow per MIL-STD-202, Method 210, with peak temperature ≤235°C for ≤60 seconds. The DO-213AA glass body withstands thermal shock better than plastic packages, but ramp rates must stay within ±3°C/s to avoid microfractures.
How does the temperature coefficient of JANS1N4581AUR-1/TR compare to CDLL4581A?
JANS1N4581AUR-1/TR and CDLL4581A both specify ±0.005%/°C tempco over −55°C to +100°C. However, JANS1N4581AUR-1/TR achieves this with hermetic construction and MIL screening, ensuring the spec holds across lifetime and radiation exposure - whereas CDLL4581A's tempco is valid only for short-term lab conditions.
Can JANS1N4581AUR-1/TR be used in forward-bias applications?
No, JANS1N4581AUR-1/TR is designed exclusively for reverse-bias Zener operation. Its metallurgical structure and qualification testing assume cathode-positive biasing. Forward conduction is not characterized, and using it in forward mode voids MIL-PRF-19500/452 compliance and may cause irreversible parameter shift.
JANS1N4581AUR-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):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/452
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
JANS1N4581AUR-1/TR FAQ
1.How can I place an order for JANS1N4581AUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4581AUR-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 JANS1N4581AUR-1/TR reliable?
The price and inventory of JANS1N4581AUR-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 JANS1N4581AUR-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4581AUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4581AUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4581AUR-1/TR?
JANS1N4581AUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4581AUR-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 JANS1N4581AUR-1/TR?
For technical support, including JANS1N4581AUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4581AUR-1/TR requirements.
6.How does Aetrix verify that JANS1N4581AUR-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4581AUR-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 JANS1N4581AUR-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4581AUR-1/TR?
All JANS1N4581AUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4581AUR-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 JANS1N4581AUR-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4581AUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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