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Microchip Technology JANTX1N4620D-1/TR
- Part No.:
- JANTX1N4620D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4620D-1/TR.pdf
- Description:
- DIODE ZENER 3.3V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,635
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Product details
Overview
JANTX1N4620D-1/TR from Microsemi is a 1% tolerance, 3.3 V, 500 mW axial-leaded Zener diode in DO-35 glass package, metallurgically bonded for high-reliability voltage regulation in military and aerospace power conditioning circuits.
For engineers reviewing the JANTX1N4620D-1/TR datasheet, JANTX1N4620D-1/TR pinout, JANTX1N4620D-1/TR application, or JANTX1N4620D-1/TR equivalent, this page delivers verified MIL-PRF-19500/435 qualified parameters, DO-35 terminal polarity, noise density (1 µV/√Hz), temperature coefficient (+0.075 %/°C), and JANTX-level reliability data - all critical for precision biasing and reference design.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 3.3 V at 250 mA test current, dynamic impedance of 1650 Ω at IZT, and maximum reverse leakage of 3.5 µA at VR = 2.0 V. Its metallurgical bond ensures stable junction behavior under thermal cycling and radiation exposure.
Designed for operation across –65 °C to +175 °C, it exhibits linear power derating from 500 mW at 25 °C to zero at 175 °C, with thermal resistance junction-to-lead of 250 °C/W at 10 mm lead length - enabling predictable thermal management in hermetically sealed chassis-mount applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.3 V ±1% at 250 mA - provides tight reference accuracy for analog sensing and ADC bias networks. |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in low-power analog subsystems without forced cooling. |
| Dynamic Impedance ZZT | 1650 Ω at IZT - indicates moderate AC impedance, suitable for DC reference but not ultra-low-noise LDO feedback. |
| Noise Density ND | 1 µV/√Hz - among lowest in sub-5 V Zeners, critical for precision instrumentation references. |
| Temp Coefficient αVZ | +0.075 %/°C - positive drift enables predictable compensation in temperature-stable voltage dividers. |
| Reverse Leakage IR | 3.5 µA @ VR = 2.0 V - ensures minimal quiescent current draw in battery-backed monitoring circuits. |
| Junction Temp Range | –65 °C to +175 °C - certified for extended-range operation in avionics and downhole electronics. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end must be held positive relative to anode for Zener regulation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener output node | Connected to regulated voltage rail; polarity must be observed to avoid forward conduction. |
| Anode (unbanded end) | Reference return | Connected to circuit ground or lower-potential node; forms current path through series resistor. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated screening and testing for military-grade reliability, including burn-in and life test requirements. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock, ensuring long-term parameter stability in cyclic environments. |
| 1% Zener voltage tolerance (D suffix) | Reduces need for post-production trimming in precision reference designs, lowering calibration cost and time. |
| Low noise density (1 µV/√Hz) | Enables use in high-resolution analog front-ends where reference noise directly impacts SNR. |
| Hermetic glass DO-35 package | Provides moisture and contaminant immunity essential for space and high-altitude applications. |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters measuring engine oil pressure and temperature in flight control systems. IC Role / Device Role / Timing Role: Precision Zener reference providing stable 3.3 V input to ADC voltage reference pin. Use Value: 1% tolerance and +0.075 %/°C TC enable <±0.5% total error over –55 °C to +125 °C operating range. | Use Scenario: Supplying bias voltage to radiation-hardened photodiode amplifiers in Earth observation payloads. IC Role / Device Role / Timing Role: Low-noise voltage reference for transimpedance amplifier feedback network. Use Value: 1 µV/√Hz noise density preserves signal integrity in sub-nA photocurrent measurements. |
| Downhole Telemetry Modules | Tactical Radio RF Front-Ends |
Use Scenario: Stabilizing local oscillator tuning voltage in high-temperature logging tools deployed at 175 °C wellbore conditions. IC Role / Device Role / Timing Role: High-temperature Zener regulator maintaining VCO control voltage despite ambient thermal stress. Use Value: Guaranteed operation to +175 °C with linear derating allows full 500 mW use below 50 °C and safe fallback at extreme temperatures. | Use Scenario: Generating stable bias for GaAs FET driver stages in manpack radio transmit chains. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp protecting gate drive nodes from transient overvoltage. Use Value: Minimal junction capacitance (<2 pF typical at 3.3 V) avoids RF signal distortion in 100–500 MHz bands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTX1N4620C-1/TR | 2% Zener tolerance vs. 1% for JANTX1N4620D-1/TR; identical VZ, IZT, ZZT, and packaging. | Acceptable where system-level calibration compensates for initial tolerance; unsuitable for untrimmed reference paths. | Select JANTX1N4620C-1/TR only when 2% initial accuracy meets total error budget after temperature and aging effects. |
| JANS1N4620D-1 | Higher screening level (JANS vs. JANTX); includes additional radiation hardness validation and lot acceptance testing. | Required for spaceflight missions or nuclear-hardened systems; overqualified for ground-based avionics. | Choose JANS1N4620D-1 only when mission assurance mandates full JANS-level qualification per MIL-PRF-19500/435. |
Compared with JANTX1N4620C-1/TR and JANS1N4620D-1, the JANTX1N4620D-1/TR delivers optimal balance of 1% initial accuracy, JANTX reliability, and cost efficiency for certified airborne platforms where radiation hardness is not required but thermal and long-term stability are critical.
Availability
JANTX1N4620D-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and downhole telemetry modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for JANTX1N4620D-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 defense, aerospace, and industrial markets.
The 1N46xx-1 series was developed specifically to meet MIL-PRF-19500/435 requirements for ruggedized, low-noise Zener references in mission-critical power regulation and voltage reference applications.
FAQ
What is the Zener voltage tolerance of JANTX1N4620D-1/TR?
The JANTX1N4620D-1/TR has a nominal Zener voltage of 3.3 V with a guaranteed tolerance of ±1%, denoted by the "D" suffix in the part number per Microsemi's nomenclature. This tolerance is specified at 25 °C with 250 mA test current and applies across the full JANTX reliability level screening.
Does JANTX1N4620D-1/TR require external current limiting?
Yes, JANTX1N4620D-1/TR requires a series current-limiting resistor to establish the Zener test current (IZT = 250 mA) and prevent thermal runaway. The resistor value is calculated using (VSUPPLY − 3.3 V) / 0.25 A, with power rating derated per ambient temperature per Figure 2 in the T4-LDS-0245-2 datasheet.
Is JANTX1N4620D-1/TR RoHS compliant?
No, JANTX1N4620D-1/TR is not RoHS compliant. Per the datasheet, RoHS-compliant versions (e3 suffix) are available only on commercial-grade parts; JANTX-level devices use tin-lead plating to meet MIL-STD-750 solderability requirements and are exempt from RoHS under military exemptions.
What is the maximum operating temperature for JANTX1N4620D-1/TR?
The JANTX1N4620D-1/TR is rated for junction and storage temperatures from –65 °C to +175 °C. Its power dissipation linearly derates from 500 mW at 25 °C to zero at 175 °C, with thermal resistance junction-to-lead of 250 °C/W at 10 mm lead length - enabling reliable operation in high-temperature avionics enclosures.
How does the noise performance of JANTX1N4620D-1/TR compare to higher-voltage Zeners?
JANTX1N4620D-1/TR delivers 1 µV/√Hz noise density at 3.3 V, which is significantly lower than the 40 µV/√Hz typical for 6.8 V+ Zeners in the same family. This makes it uniquely suited for low-voltage precision references where noise directly limits measurement resolution in analog signal chains.
JANTX1N4620D-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):
- 3.3 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1650 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 1.5 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)
JANTX1N4620D-1/TR FAQ
1.How can I place an order for JANTX1N4620D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4620D-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 JANTX1N4620D-1/TR reliable?
The price and inventory of JANTX1N4620D-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 JANTX1N4620D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4620D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4620D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4620D-1/TR?
JANTX1N4620D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4620D-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 JANTX1N4620D-1/TR?
For technical support, including JANTX1N4620D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4620D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4620D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4620D-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 JANTX1N4620D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4620D-1/TR?
All JANTX1N4620D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4620D-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 JANTX1N4620D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4620D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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