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Microchip Technology JANTX1N4618D-1/TR
- Part No.:
- JANTX1N4618D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4618D-1/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,968
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Product details
Overview
JANTX1N4618D-1/TR from Microsemi is a 2.7 V, 1% tolerance, 500 mW axial-leaded Zener diode in DO-35 glass package, qualified to JANTX reliability level per MIL-PRF-19500/435, used for precision voltage regulation in military-grade power supply reference and biasing circuits.
For engineers reviewing the JANTX1N4618D-1/TR datasheet, JANTX1N4618D-1/TR pinout, JANTX1N4618D-1/TR application, or JANTX1N4618D-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification details critical for high-reliability analog design and legacy system sustainment.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 2.7 V at 250 mA test current, exhibiting a temperature coefficient of –0.075 %/°C and dynamic impedance of 1500 Ω at IZT. Its metallurgically bonded construction ensures stable regulation across –65 °C to +175 °C junction temperature range.
Designed for low-noise applications, JANTX1N4618D-1/TR delivers maximum noise density of 1 μV/√Hz at its rated Zener voltage and supports stable regulation under wide current variation (IZK to IZM), with reverse leakage limited to 0.5 µA at VR = 2.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V ±1% at 250 mA - enables precise low-voltage reference generation with tight initial tolerance. |
| Power Dissipation | 500 mW at 25 °C - supports robust operation in compact through-hole layouts with linear derating above 50 °C. |
| Dynamic Impedance ZZT | 1500 Ω at 250 mA - indicates moderate AC impedance for stable regulation under varying load conditions. |
| Temperature Coefficient αVZ | –0.075 %/°C - ensures predictable, negative drift over temperature for compensated reference designs. |
| Noise Density ND | 1 μV/√Hz at 250 mA - provides ultra-low broadband noise essential for sensitive analog measurement front-ends. |
| Max Reverse Current IR | 0.5 µA at VR = 2.2 V - guarantees minimal leakage in low-power standby and battery-backed circuits. |
| Junction Temp Range | –65 °C to +175 °C - validated for extended thermal operation in aerospace, defense, and downhole electronics. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; operated with banded end positive relative to anode for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to circuit ground or lowest potential node; defines Zener breakdown polarity. |
| Cathode | Regulated Output Node | Banded end supplies stabilized 2.7 V output when reverse biased; must be held at higher potential than anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for defense and space programs requiring traceable lot history and screening per military standards. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability in harsh environments. |
| 1% Zener voltage tolerance (D suffix) | Reduces need for post-production trimming in precision reference circuits, lowering calibration cost and time. |
| Ultra-low 1 μV/√Hz noise density | Enables use in high-resolution ADC references and low-noise amplifier bias networks without added filtering. |
| Hermetic glass DO-35 package | Provides moisture and contaminant immunity superior to plastic packages, supporting >20-year field life in sealed assemblies. |
Applications
| Avionics Power Reference | Missile Guidance Bias Supply |
|---|---|
Use Scenario: Provides stable 2.7 V reference for analog-to-digital converters in inertial measurement units (IMUs) operating across –55 °C to +125 °C. IC Role / Device Role / Timing Role: Zener diode voltage reference establishing precision scaling for sensor signal conditioning circuitry. Use Value: Tight 1% tolerance and –0.075 %/°C TC enable <±0.5% total error over full temperature range without active compensation. | Use Scenario: Supplies regulated bias voltage to RF oscillator varactors and op-amp input stages in seeker electronics exposed to high-G shock. IC Role / Device Role / Timing Role: Low-noise Zener regulator maintaining stable tuning voltage under transient load and vibration stress. Use Value: 1 μV/√Hz noise density prevents phase jitter degradation in 10–20 GHz local oscillators critical for target lock accuracy. |
| Nuclear Instrumentation Front-End | Satellite Payload Voltage Monitor |
Use Scenario: Serves as reference element in radiation-hardened charge-sensitive amplifiers detecting alpha particle energy spectra in containment monitoring systems. IC Role / Device Role / Timing Role: Radiation-tolerant Zener reference compensating for detector leakage drift in high-dose gamma fields. Use Value: Inherent radiation hardness per MicroNote 050 allows operation up to 100 krad(Si) without parameter shift, eliminating shielding mass. | Use Scenario: Monitors bus voltage integrity in LEO satellite power distribution units using discrete comparator-based undervoltage lockout. IC Role / Device Role / Timing Role: Precision Zener threshold element defining trip point for fault detection logic in redundant power rails. Use Value: JANTX-level screening ensures zero infant mortality and 100% lot traceability required for flight-critical telemetry validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4618US-1 | Same 2.7 V/1% spec but in DO-213AA surface-mount package; no axial leads. | Used where board space is constrained and reflow assembly is required instead of through-hole soldering. | Select 1N4618US-1 only when migrating to SMT layout; not drop-in compatible due to package and thermal path differences. |
| JAN1N4618D-1 | Identical electrical specs and DO-35 package, but qualified only to JAN (not JANTX) level per MIL-PRF-19500/435. | Approved for less demanding military subsystems where full JANTX screening (e.g., burn-in, life test) is not mandated. | Choose JAN1N4618D-1 for cost-sensitive programs meeting baseline MIL-spec without extended reliability testing. |
Compared with JANTX1N4618D-1/TR, 1N4618US-1 enables PCB area reduction but sacrifices thermal performance and repairability, while JAN1N4618D-1 reduces procurement cost and lead time at the expense of screened reliability margin for mission-critical functions.
Availability
JANTX1N4618D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, missile guidance bias supply, and nuclear instrumentation front-end applications requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JANTX1N4618D-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 analog, mixed-signal, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N4614–1N4627 series was designed specifically to deliver MIL-qualified Zener regulation with metallurgical bonding and hermetic packaging for legacy and new-design military electronics requiring guaranteed parametric stability over extreme temperature and radiation exposure.
FAQ
What is the Zener voltage and tolerance of JANTX1N4618D-1/TR?
JANTX1N4618D-1/TR has a nominal Zener voltage of 2.7 V with ±1% tolerance at 250 mA test current, as confirmed in the Microsemi T4-LDS-0245-2 datasheet Table on Page 3. This tight tolerance is enabled by the "D" suffix in the part number and supports precision reference applications without post-calibration.
Is JANTX1N4618D-1/TR RoHS compliant?
No, JANTX1N4618D-1/TR is not RoHS compliant. Per the datasheet, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade parts; JANTX-level devices retain tin-lead plating to meet MIL-STD-750 solderability requirements and are exempt from RoHS under military procurement waivers.
What is the maximum power dissipation and derating behavior of JANTX1N4618D-1/TR?
JANTX1N4618D-1/TR has a rated average power dissipation of 500 mW at 25 °C, linearly derated to zero at 175 °C per Figure 2 in the datasheet. Derating begins at 50 °C for lead temperature and follows a slope of –6.25 mW/°C, ensuring safe operation under sustained thermal stress in enclosed enclosures.
What does the "TR" suffix indicate in JANTX1N4618D-1/TR?
"TR" denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. The base part JANTX1N4618D-1 is supplied in bulk or ammo pack; adding "TR" confirms reel format with standard quantities and orientation-critical for high-volume manufacturing of military PCBs.
How is polarity marked on JANTX1N4618D-1/TR, and how must it be connected?
JANTX1N4618D-1/TR uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode to operate in Zener breakdown mode. Reverse connection (band to ground) results in forward conduction (~1.1 V drop), not regulation.
JANTX1N4618D-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:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4618D-1/TR FAQ
1.How can I place an order for JANTX1N4618D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4618D-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 JANTX1N4618D-1/TR reliable?
The price and inventory of JANTX1N4618D-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 JANTX1N4618D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4618D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4618D-1/TR transactions.
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JANTX1N4618D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4618D-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 JANTX1N4618D-1/TR?
For technical support, including JANTX1N4618D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4618D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4618D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4618D-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 JANTX1N4618D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4618D-1/TR?
All JANTX1N4618D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4618D-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 JANTX1N4618D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4618D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4618D-1/TR Tags
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