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Microchip Technology JANS1N4618C-1/TR
- Part No.:
- JANS1N4618C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4618C-1/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,750
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Product details
Overview
JANS1N4618C-1/TR from Microsemi is a 2.7 V, 500 mW, 2% tolerance metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense voltage regulation. It delivers stable reference voltage under varying load and temperature in precision analog power supplies and radiation-hardened systems.
For engineers reviewing the JANS1N4618C-1/TR datasheet, JANS1N4618C-1/TR pinout, JANS1N4618C-1/TR application, or JANS1N4618C-1/TR equivalent, key selection criteria include Zener voltage (2.7 V), tolerance (±2%), noise density (1 µV/√Hz), max reverse current (0.5 µA @ VR), and JANS-level qualification for extended temperature (-65°C to +175°C) and radiation hardness.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures low thermal resistance (RθJL = 250°C/W) and minimal capacitance (<1 pF typical at 2.7 V), enabling stable regulation across wide current ranges (IZT = 250 mA) and temperatures.
It exhibits a negative temperature coefficient of -0.075%/°C and dynamic impedance ZZT = 1500 Ω at IZT, supporting low-noise performance critical in precision instrumentation and space-grade analog circuits where long-term stability and ESD immunity (MIL-STD-750 Method 1020) are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V at 250 mA test current - defines precise regulation point for low-voltage reference design |
| Tolerance | ±2% - tighter than standard ±5%, enabling higher accuracy in calibration-critical systems |
| Power Rating | 500 mW - supports robust operation up to 175°C junction temperature with linear derating |
| Noise Density | 1 µV/√Hz - ultra-low noise ideal for sensitive analog front-ends and metrology applications |
| Reverse Leakage | 0.5 µA max @ VR - ensures minimal quiescent current in battery-powered or low-power hold-up circuits |
| Temp Coefficient αVZ | -0.075%/°C - predictable drift behavior for compensated reference designs |
| Dynamic Impedance | 1500 Ω at IZT - determines regulation stiffness and AC ripple rejection capability |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by color band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; must be held at lower potential than cathode during regulation |
| Cathode | Regulated output node | Banded end; supplies stable 2.7 V when reverse-biased; requires current-limiting resistor in series |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Guarantees screening, testing, and traceability for spaceflight and nuclear-hardened systems |
| Metallurgical bond construction | Enables low RθJL (250°C/W) and high reliability under thermal cycling and mechanical stress |
| Ultra-low noise density | 1 µV/√Hz at 2.7 V enables use in high-resolution ADC references and sensor signal conditioning |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over decades in harsh environments |
| ESD immunity | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for external protection in handling and assembly |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Real-time monitoring of 28 V DC bus voltage in flight control computers using resistive divider + comparator. IC Role / Device Role / Timing Role: Precision 2.7 V reference for comparator threshold setting and ADC calibration. Use Value: ±2% tolerance and -65°C to +175°C operation ensure consistent trip points across extreme thermal profiles. | Use Scenario: Providing stable bias voltage to radiation-tolerant photodiode amplifiers in Earth observation payloads. IC Role / Device Role / Timing Role: Low-noise Zener reference replacing IC-based references where total ionizing dose (TID) > 100 krad required. Use Value: Inherent radiation hardness per MicroNote 050 eliminates derating or shielding overhead in LEO missions. |
| Nuclear Instrumentation | Missile Guidance Reference |
Use Scenario: Calibration reference in portable gamma spectrometers used in field radiological surveys. IC Role / Device Role / Timing Role: Primary voltage standard for multi-decade logarithmic amplifier scaling. Use Value: 1 µV/√Hz noise density preserves energy resolution in pulse-height analysis below 10 keV. | Use Scenario: Regulating reference voltage for inertial measurement unit (IMU) analog signal chains in tactical missiles. IC Role / Device Role / Timing Role: JANS-qualified Zener providing stable bias under high-G shock and vibration. Use Value: Metallurgical bond and DO-35 mechanical robustness prevent parametric shift during launch acceleration profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4618C-1 | Same electrical specs but qualified only to JANTXV level; lacks full JANS screening (e.g., burn-in, lot acceptance tests) | Suitable for high-reliability ground systems but not certified for spaceflight or nuclear environments | Select JANS1N4618C-1/TR when mission-critical radiation hardness and full MIL-PRF-19500/435 compliance are mandatory |
| 1N4618C-1/TR (commercial) | Identical Zener parameters and DO-35 package, but unqualified; RoHS-compliant (e3 suffix) available | Applicable only in non-military commercial designs with no environmental or reliability requirements | Choose JANS1N4618C-1/TR when extended temperature range, hermeticity, and traceable lot history are required |
Compared with JANTXV1N4618C-1 and commercial 1N4618C-1/TR, the JANS1N4618C-1/TR provides verified radiation hardness, full JANS screening including lot-by-lot testing, and guaranteed operation from -65°C to +175°C - making it the sole option for flight-certified avionics and safety-critical nuclear instrumentation.
Availability
JANS1N4618C-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, nuclear instrumentation requiring stable component supply, long-lifecycle support, and full traceability.
Supply support for JANS1N4618C-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 1N4614–1N4627 family was designed specifically for military and space applications requiring hermetic sealing, extended temperature operation, and intrinsic radiation tolerance without external hardening.
FAQ
What is the Zener voltage and tolerance of JANS1N4618C-1/TR?
JANS1N4618C-1/TR has a nominal Zener voltage of 2.7 V at 250 mA test current with a tight ±2% tolerance (denoted by 'C' in the part number). This specification is guaranteed across the full -65°C to +175°C operating temperature range and is validated per MIL-PRF-19500/435 screening requirements for JANS devices.
Is JANS1N4618C-1/TR radiation-hardened?
Yes, JANS1N4618C-1/TR is inherently radiation-hardened as described in Microsemi MicroNote 050. Its metallurgically bonded glass construction provides immunity to total ionizing dose (TID) effects without requiring additional shielding or derating - a key qualification for satellite and nuclear instrumentation use of JANS1N4618C-1/TR.
What does the 'TR' suffix mean in JANS1N4618C-1/TR?
'TR' indicates tape-and-reel packaging per EIA-296 standard, enabling automated placement in high-volume manufacturing. JANS1N4618C-1/TR is supplied in reels with standard orientation (cathode band facing consistent direction), and the tape meets MIL-STD-750 solderability requirements per method 2026.
Can JANS1N4618C-1/TR replace commercial 1N4618C-1/TR in existing designs?
JANS1N4618C-1/TR shares identical electrical parameters and DO-35 mechanical form factor with commercial 1N4618C-1/TR, but adds JANS-level screening, extended temperature rating, and hermetic sealing. Replacement is electrically valid but requires requalification for radiation, thermal, and reliability performance in mission-critical systems using JANS1N4618C-1/TR.
What is the maximum reverse leakage current for JANS1N4618C-1/TR?
JANS1N4618C-1/TR has a maximum reverse leakage current (IR) of 0.5 µA at rated reverse voltage (VR), measured per MIL-PRF-19500/435 test conditions. This low leakage supports ultra-low-power bias networks and extends battery life in portable radiation detection equipment using JANS1N4618C-1/TR.
JANS1N4618C-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):
- 2.7 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 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)
JANS1N4618C-1/TR FAQ
1.How can I place an order for JANS1N4618C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4618C-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 JANS1N4618C-1/TR reliable?
The price and inventory of JANS1N4618C-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 JANS1N4618C-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4618C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4618C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4618C-1/TR?
JANS1N4618C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4618C-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 JANS1N4618C-1/TR?
For technical support, including JANS1N4618C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4618C-1/TR requirements.
6.How does Aetrix verify that JANS1N4618C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4618C-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 JANS1N4618C-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4618C-1/TR?
All JANS1N4618C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4618C-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 JANS1N4618C-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4618C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4618C-1/TR Tags
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