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Microchip Technology JANS1N4617-1/TR
- Part No.:
- JANS1N4617-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4617-1/TR.pdf
- Description:
- DIODE ZENER 2.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,913
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Product details
Overview
JANS1N4617-1/TR from Microsemi is a 2.4 V, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers 250 mA Zener test current, 1400 Ω dynamic impedance at IZT, 1.0 µA reverse leakage at 1.0 V, and -0.075 %/°C temperature coefficient.
For engineers reviewing the JANS1N4617-1/TR datasheet, JANS1N4617-1/TR pinout, JANS1N4617-1/TR application, or JANS1N4617-1/TR equivalent, key selection criteria include Zener voltage tolerance (±5%), noise density (1 µV/√Hz), radiation hardness, hermetic glass packaging, and MIL-qualified thermal derating behavior up to +175 °C junction temperature.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, with regulation stable across wide current (250 mA IZT) and temperature (-65 to +175 °C) ranges. Its metallurgical bond construction ensures low noise (1 µV/√Hz at 2.4 V) and inherent radiation hardness per Microsemi MicroNote 050.
The JANS1N4617-1/TR exhibits a negative temperature coefficient of -0.075 %/°C and is rated for 500 mW average power dissipation, linearly derated to zero at +175 °C ambient when mounted on FR4 with specified copper pad geometry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.4 V at 250 mA test current - defines precise regulation point for low-voltage reference circuits |
| Power Dissipation | 500 mW at +25 °C, derated linearly to zero at +175 °C - sets maximum thermal load under standard PCB layout |
| Dynamic Impedance ZZT | 1400 Ω at 250 mA - determines output voltage stability under varying load current |
| Reverse Leakage IR | 1.0 µA at 1.0 V - ensures minimal parasitic current in standby or low-power bias networks |
| Noise Density ND | 1 µV/√Hz - enables use in ultra-low-noise analog references and precision instrumentation |
| Temp Coefficient αVZ | -0.075 %/°C - quantifies voltage drift over temperature, critical for stable calibration |
| Junction Temp Range | -65 to +175 °C - supports operation in extreme environmental conditions typical of space and military platforms |
Pinout & Package
Package: DO-35 (DO-204AH), axial-leaded, hermetically sealed glass case. Cathode indicated by band; banded end is positive during Zener regulation. Weight ≈ 0.2 g. Dimensions per MIL-STD-709: body diameter 1.42–2.29 mm, body length 3.56–5.08 mm, lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in bias network |
| Cathode | Zener regulation output | Banded terminal; supplies regulated 2.4 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Guarantees performance and reliability for spaceflight, avionics, and nuclear-hardened systems |
| Metallurgical bond construction | Eliminates interfacial voids, enabling low-noise operation and enhanced long-term stability |
| Hermetic glass DO-35 package | Prevents moisture ingress and corrosion, supporting >20-year shelf life in controlled storage |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - no additional shielding required |
| ESD immunity | Non-sensitive per MIL-STD-750 Method 1020 - withstands handling without special precautions |
Applications
| Avionics Power Monitoring | Satellite Onboard Computer Reference |
|---|---|
Use Scenario: Real-time monitoring of 28 V DC bus voltage in flight control electronics using resistive divider and ADC. IC Role / Device Role / Timing Role: Precision 2.4 V reference for ADC voltage scaling and fault detection thresholds. Use Value: Stable regulation over -55 to +125 °C ensures consistent measurement accuracy without recalibration. | Use Scenario: Providing stable bias for radiation-tolerant op-amps and comparators in satellite telemetry subsystems. IC Role / Device Role / Timing Role: Low-noise Zener reference source for analog signal conditioning front-ends. Use Value: 1 µV/√Hz noise density minimizes signal-to-noise degradation in low-level sensor interfaces. |
| Nuclear Instrumentation Calibration | Tactical Radio RF Stage Biasing |
Use Scenario: Calibrating gamma spectrometer pulse-height analyzers requiring traceable low-voltage standards. IC Role / Device Role / Timing Role: Primary voltage reference in portable field calibration equipment operating across wide temperature excursions. Use Value: JANS qualification and -0.075 %/°C tempco enable NIST-traceable accuracy without active compensation. | Use Scenario: Setting gate bias points for GaAs FETs in high-frequency RF power amplifiers deployed in mobile radios. IC Role / Device Role / Timing Role: Stable DC reference for bias network trimming and temperature drift compensation. Use Value: Hermetic DO-35 package ensures reliability under mechanical shock and humidity cycling in battlefield environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4617-1 | Same electrical specs; qualified to JANTXV level (lower screening rigor than JANS) | Approved for high-reliability ground-based systems but not spaceflight or nuclear environments | Select when full JANS screening is unnecessary and cost sensitivity is higher |
| 1N4617US-1 | Same Zener voltage and DO-35 package; commercial-grade, RoHS-compliant, non-mil-qualified | Limited to industrial or commercial designs without radiation or extended temperature requirements | Select only for non-critical applications where MIL-PRF-19500 compliance is not mandated |
Compared with JANTXV1N4617-1 and 1N4617US-1, the JANS1N4617-1/TR provides the highest assurance of parametric stability under radiation exposure and extreme thermal cycling, making it the sole choice for mission-critical spaceborne and strategic defense electronics.
Availability
JANS1N4617-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite onboard computer reference, and nuclear instrumentation calibration requiring stable component supply across extended product lifecycles.
Supply support for JANS1N4617-1/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 aerospace-grade components.
The JANS1N4617-1/TR belongs to Microsemi's legacy 1N46xx-1 Zener diode family, designed specifically for precision voltage regulation in mission-critical defense, space, and nuclear instrumentation systems where long-term parametric stability and environmental survivability are mandatory.
FAQ
What is the Zener voltage and test current for JANS1N4617-1/TR?
The JANS1N4617-1/TR has a nominal Zener voltage of 2.4 V measured at a Zener test current (IZT) of 250 mA. This value is guaranteed under thermal equilibrium at +25 °C ambient and forms the basis for its regulation accuracy in precision reference applications.
Is JANS1N4617-1/TR radiation hardened?
Yes, the JANS1N4617-1/TR is inherently radiation hard per Microsemi MicroNote 050 due to its metallurgically bonded structure and hermetic DO-35 glass package. It is qualified to JANS level per MIL-PRF-19500/435, making it suitable for space and nuclear environments without supplemental shielding.
What does the "TR" suffix mean in JANS1N4617-1/TR?
The "TR" suffix in JANS1N4617-1/TR indicates tape-and-reel packaging per EIA-296 standard. This format supports automated SMT placement and is standard for volume orders; consult factory for minimum order quantities and reel specifications.
What is the maximum junction temperature rating for JANS1N4617-1/TR?
The JANS1N4617-1/TR has a maximum junction and storage temperature range of -65 to +175 °C. Its 500 mW power rating is linearly derated to zero at +175 °C, ensuring safe operation in high-temperature avionics and downhole instrumentation.
How does the temperature coefficient affect JANS1N4617-1/TR performance?
The JANS1N4617-1/TR has a temperature coefficient of -0.075 %/°C, meaning its Zener voltage decreases by approximately 1.8 mV per °C rise in junction temperature. This predictable drift allows for accurate compensation in calibrated systems where thermal gradients are known.
JANS1N4617-1/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):
- 2.4 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.4 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4617-1/TR FAQ
1.How can I place an order for JANS1N4617-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4617-1/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 JANS1N4617-1/TR reliable?
The price and inventory of JANS1N4617-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4617-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4617-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4617-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4617-1/TR?
JANS1N4617-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4617-1/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 JANS1N4617-1/TR?
For technical support, including JANS1N4617-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4617-1/TR requirements.
6.How does Aetrix verify that JANS1N4617-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4617-1/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 JANS1N4617-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4617-1/TR?
All JANS1N4617-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4617-1/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 JANS1N4617-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4617-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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