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Microchip Technology JANTX1N4618C-1/TR
- Part No.:
- JANTX1N4618C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4618C-1/TR.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,880
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Product details
Overview
JANTX1N4618C-1/TR from Microsemi is a 2.7 V, 500 mW axial-leaded glass Zener diode in DO-35 (DO-204AH) package, qualified to JANTX level per MIL-PRF-19500/435, with 2% Zener voltage tolerance, 1500 Ω dynamic impedance at 250 mA test current, and 0.5 µA maximum reverse leakage at 2.0 V. It serves as a precision voltage reference in military-grade power supply regulation.
For engineers reviewing the JANTX1N4618C-1/TR datasheet, JANTX1N4618C-1/TR pinout, JANTX1N4618C-1/TR application, or JANTX1N4618C-1/TR equivalent, key selection criteria include its MIL-qualified reliability level, 2% Zener tolerance, DO-35 thermal resistance (RθJL = 250 °C/W), low-noise performance (1 µV/√Hz), and operation across –65 °C to +175 °C junction temperature range.
Technical Context
This device operates in reverse-biased Zener breakdown mode with a nominal regulation voltage of 2.7 V at IZT = 250 mA. Its metallurgically bonded construction ensures stable voltage regulation under thermal stress and radiation exposure, supporting high-reliability aerospace and defense systems.
The diode exhibits a negative temperature coefficient of –0.075 %/°C and maintains low dynamic impedance (1500 Ω) at rated test current, enabling stable reference performance across wide current and temperature ranges without external compensation circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V ±2% at IZT = 250 mA - defines precise regulation point for low-voltage reference circuits |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous operation in compact through-hole layouts with 3/8″ lead length |
| Dynamic Impedance ZZT | 1500 Ω max at IZT = 250 mA - limits output voltage variation under load transients |
| Reverse Leakage IR | 0.5 µA max at VR = 2.0 V - ensures minimal quiescent current in standby bias networks |
| Noise Density | 1 µV/√Hz - enables use in low-noise analog references where signal integrity is critical |
| Temp Coefficient αVZ | –0.075 %/°C - allows predictable drift modeling in temperature-compensated designs |
| Junction Temp Range | –65 °C to +175 °C - certified for extended operation in harsh environmental enclosures |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; leads are tin-lead or RoHS-compliant matte-tin plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; supplies regulated 2.7 V when reverse-biased above breakdown threshold; polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for defense electronics with full traceability and screening per military standards |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| 2% Zener voltage tolerance | Reduces need for post-assembly trimming in precision voltage reference designs |
| Low noise density (1 µV/√Hz) | Supports high-fidelity analog sensing and metrology applications without added filtering |
| Hermetic glass DO-35 package | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
Applications
| Avionics Power Monitoring | Spacecraft Battery Regulation |
|---|---|
Use Scenario: Monitoring bus voltage in flight control power distribution units where ambient temperature swings exceed 100 °C. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference for ADC input scaling and overvoltage comparator thresholds. Use Value: Stable 2.7 V reference enables accurate voltage telemetry across –65 °C to +175 °C, meeting DO-160E Category S environmental requirements. | Use Scenario: Regulating charging voltage for lithium-thionyl chloride batteries aboard CubeSats operating in vacuum and thermal extremes. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant voltage across battery protection IC inputs during charge/discharge cycles. Use Value: JANTX-level radiation hardness and hermetic sealing prevent parametric shift after 10 krad(Si) total ionizing dose exposure. |
| Tactical Radio RF Bias Networks | Nuclear Instrumentation Front-Ends |
Use Scenario: Providing stable bias voltage to GaAs FET amplifiers in handheld HF/VHF transceivers exposed to rapid thermal transients. IC Role / Device Role / Timing Role: Low-noise Zener reference supplying gate bias for linear RF power stages. Use Value: 1 µV/√Hz noise density prevents AM sideband degradation in sub-10 kHz modulation bandwidths. | Use Scenario: Conditioning pulse signals from gamma-ray scintillation detectors in reactor monitoring systems requiring decades-long calibration stability. IC Role / Device Role / Timing Role: Primary voltage clamp protecting ADC front-end inputs from ESD and transient overvoltage events. Use Value: Non-sensitive ESD behavior per MIL-STD-750 method 1020 eliminates need for external TVS diodes in Class 1B safety-critical signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4618US-1/TR | Same electrical specs but in surface-mount DO-213AA package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or wire-wrap | Select when board space constraints mandate SMT or automated placement is required |
| JANTXV1N4618C-1/TR | Identical specs with JANTXV qualification level - stricter screening, enhanced lot traceability, and extended temperature validation | Required for programs specifying JANTXV-level reliability (e.g., missile guidance subsystems) | Select when program documentation mandates JANTXV or higher qualification tier |
Compared with JANTX1N4618C-1/TR, the 1N4618US-1/TR offers identical regulation performance in a smaller footprint but sacrifices mechanical robustness and hand-soldering flexibility, while the JANTXV1N4618C-1/TR adds cost and lead time for verified extended-life screening without altering electrical behavior.
Availability
JANTX1N4618C-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, spacecraft battery regulation, and nuclear instrumentation front-ends requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4618C-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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4614–1N4627 series was designed specifically to meet MIL-PRF-19500/435 requirements for ruggedized, low-noise Zener references in mission-critical power and sensing applications.
FAQ
What is the Zener voltage tolerance of JANTX1N4618C-1/TR?
JANTX1N4618C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its nomenclature. This means its nominal 2.7 V regulation voltage falls within 2.646 V to 2.754 V at IZT = 250 mA and TA = 25 °C. The tighter tolerance reduces calibration overhead in precision reference designs compared to standard 5% variants like JANTX1N4618-1/TR.
Is JANTX1N4618C-1/TR RoHS compliant?
No, JANTX1N4618C-1/TR is not RoHS compliant. Per the Microsemi datasheet, RoHS-compliant versions (suffix "e3") are available only for commercial-grade parts, not for JAN, JANTX, JANTXV, or JANS qualified devices. JANTX1N4618C-1/TR uses traditional tin-lead plating per MIL-STD-750 method 2026 to ensure solderability and reliability in military applications.
What does the "TR" suffix indicate in JANTX1N4618C-1/TR?
"TR" indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JANTX1N4618C-1/TR is supplied on reels with standardized orientation and spacing, unlike bulk or ammo-pack versions. This format supports high-volume manufacturing while preserving full JANTX qualification and traceability for each unit on the reel.
How does the thermal resistance of JANTX1N4618C-1/TR affect its power derating?
JANTX1N4618C-1/TR has RθJL = 250 °C/W (junction-to-lead) with 3/8″ lead length. Its 500 mW rating linearly derates to zero at 175 °C junction temperature, meaning usable power drops to ~375 mW at TL = 50 °C. Engineers must calculate actual lead temperature rise using measured ambient and PCB copper area to avoid exceeding thermal limits in enclosed chassis.
Can JANTX1N4618C-1/TR replace JANTX1N4618-1/TR in existing designs?
Yes, JANTX1N4618C-1/TR can directly replace JANTX1N4618-1/TR, as both share identical package (DO-35), electrical characteristics (2.7 V, 500 mW), and JANTX qualification - the only difference is the tighter ±2% Zener tolerance (vs. ±5% for the "blank" version). No layout or schematic changes are needed, and the improved tolerance may enhance system accuracy without additional cost penalty.
JANTX1N4618C-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):
- 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)
JANTX1N4618C-1/TR FAQ
1.How can I place an order for JANTX1N4618C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4618C-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 JANTX1N4618C-1/TR reliable?
The price and inventory of JANTX1N4618C-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 JANTX1N4618C-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4618C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4618C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4618C-1/TR?
JANTX1N4618C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4618C-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 JANTX1N4618C-1/TR?
For technical support, including JANTX1N4618C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4618C-1/TR requirements.
6.How does Aetrix verify that JANTX1N4618C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4618C-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 JANTX1N4618C-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4618C-1/TR?
All JANTX1N4618C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4618C-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 JANTX1N4618C-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4618C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4618C-1/TR Tags
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