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Microchip Technology JANTX1N4618C-1
- Part No.:
- JANTX1N4618C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4618C-1.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,378
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Product details
Overview
JANTX1N4618C-1 from Microsemi is a 2.7 V, 500 mW axial-leaded glass Zener diode in DO-35 package, qualified to JANTX level per MIL-PRF-19500/435, with 2% voltage tolerance, 1500 Ω dynamic impedance at 250 mA test current, and -0.075 %/°C temperature coefficient - used for precision voltage regulation in military-grade power supply reference circuits.
For engineers reviewing the JANTX1N4618C-1 datasheet, JANTX1N4618C-1 pinout, JANTX1N4618C-1 application, or JANTX1N4618C-1 equivalent, key selection criteria include Zener voltage tolerance (2%), thermal resistance (250 °C/W junction-to-lead), noise density (1 μV/√Hz), maximum reverse leakage (0.5 μA @ 2.2 V), and MIL-qualified reliability level.
Technical Context
This device operates as a two-terminal voltage reference in reverse-bias breakdown mode, with metallurgically bonded construction ensuring stable regulation across -65 °C to +175 °C junction temperature range. Its low-noise performance (1 μV/√Hz) and tight 2% Zener voltage tolerance support high-accuracy analog references.
The DO-35 package provides hermetic glass sealing and axial leads with cathode band marking; thermal derating begins linearly at 50 °C ambient, reducing rated power from 500 mW to zero at 175 °C. It is non-ESD-sensitive per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V ±2% at 250 mA - defines precise regulation point for low-voltage reference design |
| Power Dissipation | 500 mW at 25 °C lead temperature - sets maximum continuous DC power handling |
| Dynamic Impedance ZZT | 1500 Ω at IZT = 250 mA - determines output voltage stability under load variation |
| Temp. Coefficient αVZ | -0.075 %/°C - enables predictable drift compensation in wide-temperature environments |
| Noise Density ND | 1 μV/√Hz - supports low-noise analog signal conditioning and precision ADC references |
| Reverse Leakage IR | 0.5 μA max @ 2.2 V - ensures minimal quiescent current in standby regulation circuits |
| Junction Temp. Range | -65 °C to +175 °C - qualifies for aerospace, defense, and downhole industrial operation |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during Zener regulation |
| Cathode | Regulated output terminal / Zener breakdown anode | Banded end; connected to unregulated input; delivers stable 2.7 V to load |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for high-reliability defense programs |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical stress |
| 1 μV/√Hz noise density | Enables use in low-noise voltage references for precision instrumentation amplifiers |
| Hermetically sealed glass package | Prevents moisture ingress and long-term parameter drift in harsh environments |
| Non-ESD-sensitive per MIL-STD-750 | Removes need for ESD handling controls during assembly and field maintenance |
Applications
| Aerospace Power Reference | Defense System Biasing |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters in satellite telemetry modules operating across -55 °C to +125 °C. IC Role / Device Role / Timing Role: Two-terminal Zener voltage reference providing stable 2.7 V bias to ADC front-end circuitry. Use Value: Tight 2% tolerance and -0.075 %/°C TC ensure <±15 mV total drift over full temperature range, meeting MIL-STD-810G environmental compliance. | Use Scenario: Setting threshold voltage for comparator-based fault detection in radar transmitter power supplies. IC Role / Device Role / Timing Role: Precision shunt regulator establishing accurate trip point for overvoltage protection logic. Use Value: Low 0.5 μA leakage at 2.2 V prevents false triggering; hermetic DO-35 package withstands vibration and humidity in airborne avionics bays. |
| Industrial Sensor Excitation | Medical Imaging Calibration |
Use Scenario: Supplying excitation voltage to strain gauge bridges in oilfield downhole pressure transducers. IC Role / Device Role / Timing Role: Low-noise Zener reference generating stable bridge bias in high-impedance sensor interfaces. Use Value: 1 μV/√Hz noise density minimizes measurement uncertainty; -65 °C to +175 °C rating supports operation in geothermal wellheads. | Use Scenario: Calibrating photodiode amplifier gain stages in portable X-ray detector arrays. IC Role / Device Role / Timing Role: Primary voltage reference for DAC-controlled offset trimming in analog front-end ICs. Use Value: JANTX-level traceability ensures lot-to-lot consistency required for FDA Class II medical device certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4618C-1 | Higher screening level (JANTXV vs JANTX); tighter parametric limits on IR and ZZT | Required for space-flight critical subsystems where burn-in and radiation testing are mandated | Select when mission-critical reliability exceeds standard JANTX requirements |
| 1N4618UR-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads | Suitable for automated SMT assembly; not interchangeable without PCB redesign | Choose for volume production where reflow compatibility and board space savings are prioritized |
Compared with JANTX1N4618C-1, the JANTXV variant adds extended screening for space applications, while the 1N4618UR-1 offers identical regulation performance in a surface-mount form factor - enabling either enhanced reliability or manufacturing flexibility depending on system integration needs.
Availability
JANTX1N4618C-1 is available at Aetrix Electronics and suitable for aerospace power reference, defense system biasing, and industrial sensor excitation requiring stable component supply across extended temperature and lifecycle demands.
Supply support for JANTX1N4618C-1 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N4614–1N4627 series was developed specifically to deliver MIL-qualified, low-noise Zener references for precision voltage regulation in mission-critical systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4618C-1?
JANTX1N4618C-1 has a nominal Zener voltage of 2.7 V with ±2% tolerance, as indicated by the "C" suffix in its part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient, and applies across the full qualified temperature range when used within derated power limits. The JANTX1N4618C-1 maintains this specification after MIL-PRF-19500/435 screening.
Is JANTX1N4618C-1 RoHS compliant?
No, JANTX1N4618C-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants, not for JANTX-qualified parts. The JANTX1N4618C-1 uses traditional tin-lead plating on its axial leads and meets MIL-STD-750 solderability requirements without lead-free processing.
What is the maximum reverse leakage current for JANTX1N4618C-1?
The maximum reverse leakage current (IR) for JANTX1N4618C-1 is 0.5 μA at 2.2 V reverse voltage and 25 °C, as specified in the Electrical Characteristics table. This value remains valid across the full qualified temperature range when operated within thermal derating limits. The JANTX1N4618C-1 exhibits this low leakage due to its metallurgically bonded junction structure.
Can JANTX1N4618C-1 be used in surface-mount designs?
No, JANTX1N4618C-1 is packaged in the axial-leaded DO-35 (DO-204AH) glass case and is not compatible with surface-mount assembly. For SMT implementation, engineers should select the functionally equivalent 1N4618UR-1 in DO-213AA package. The JANTX1N4618C-1 requires through-hole mounting and manual or wave-solder processes.
What is the thermal resistance junction-to-lead for JANTX1N4618C-1?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4618C-1 is 250 °C/W, measured with 3/8 inch (10 mm) lead length from the package body. This value enables accurate thermal modeling when mounted on PCBs with defined copper land patterns. Derating of the 500 mW power rating begins linearly at 50 °C lead temperature, reaching zero at 175 °C - a key constraint for JANTX1N4618C-1 thermal design.
JANTX1N4618C-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for JANTX1N4618C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4618C-1 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 reliable?
The price and inventory of JANTX1N4618C-1 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 is usually 5 days.
3.What payment methods are accepted for JANTX1N4618C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4618C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4618C-1?
JANTX1N4618C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4618C-1 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?
For technical support, including JANTX1N4618C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4618C-1 requirements.
6.How does Aetrix verify that JANTX1N4618C-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4618C-1 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 meets industry standards.
7.What is the process for return or replacement of JANTX1N4618C-1?
All JANTX1N4618C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4618C-1, 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 part is unused and in its original packaging.
Return procedure for JANTX1N4618C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4618C-1 Tags
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