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Microchip Technology JANS1N4620D-1/TR
- Part No.:
- JANS1N4620D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4620D-1/TR.pdf
- Description:
- DIODE ZENER 3.3V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,984
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Product details
Overview
JANS1N4620D-1/TR from Microsemi is a 1% tolerance, 3.3 V, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense voltage regulation. It delivers stable reference voltage at 250 mA test current with 1650 Ω dynamic impedance and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the JANS1N4620D-1/TR datasheet, JANS1N4620D-1/TR pinout, JANS1N4620D-1/TR application, or JANS1N4620D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), radiation hardness, hermetic glass packaging, MIL-qualified reliability level, and low noise density (1 µV/√Hz at 3.3 V).
Technical Context
This device functions as a precision voltage reference in analog signal conditioning and power supply feedback loops where stability under extreme thermal and radiation environments is required. Its metallurgical bond construction ensures mechanical robustness and long-term parameter stability, while the DO-35 glass package provides hermetic sealing and ESD immunity per MIL-STD-750 method 1020.
The JANS1N4620D-1/TR exhibits a negative temperature coefficient of –0.075 %/°C and maintains regulation over wide current ranges (IZK to IZM = 85 mA), with minimal capacitance (<2 pF typical at 3.3 V) and low noise density critical for low-jitter timing and precision measurement circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.3 V ±1% at 250 mA - enables precise 3.3 V rail regulation in avionics power supervisors. |
| Power Dissipation | 500 mW @ 25 °C - supports continuous operation in compact, conduction-cooled modules. |
| Dynamic Impedance ZZT | 1650 Ω @ 250 mA - ensures tight voltage regulation under varying load conditions. |
| Noise Density | 1 µV/√Hz @ 3.3 V - minimizes voltage reference noise in precision ADC references. |
| Temp Coefficient αVZ | –0.075 %/°C - predictable drift behavior simplifies thermal compensation in flight control systems. |
| Junction Temp Range | –65 °C to +175 °C - certified for use in satellite payload electronics and engine-mounted sensors. |
| Reverse Leakage IR | 3.5 µA @ 2.5 V - guarantees low standby current in battery-backed reference circuits. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Hermetically sealed, tin-lead or RoHS-compliant matte-tin plating, ~0.2 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to system ground or low-side return path; establishes reference potential for regulation. |
| Cathode | Zener Output Terminal | Banded end supplies regulated 3.3 V output; must be biased positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for Class S spaceflight and nuclear-hardened military platforms per DoD requirements. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and vibration stress. |
| Hermetic glass DO-35 package | Prevents moisture ingress and parametric shift in humid or corrosive environments. |
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in high-accuracy voltage monitor designs. |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - no derating needed up to 100 krad(Si). |
Applications
| Avionics Power Supervision | Satellite Payload Reference |
|---|---|
Use Scenario: Monitoring 3.3 V FPGA core supply in airborne mission computers during rapid thermal transients. IC Role / Device Role / Timing Role: Precision voltage reference for comparator-based undervoltage lockout (UVLO) circuit. Use Value: 1% tolerance and –65 °C to +175 °C operation ensure reliable trip-point accuracy across flight envelope. | Use Scenario: Providing stable bias for radiation-hardened op-amps in star tracker analog front-ends. IC Role / Device Role / Timing Role: Low-noise Zener reference source for precision gain-setting networks. Use Value: 1 µV/√Hz noise density preserves SNR in low-light CCD signal chains. |
| Nuclear Instrumentation | Tactical Radio RF Biasing |
Use Scenario: Calibrating gamma spectrometer ADCs in reactor monitoring systems exposed to neutron flux. IC Role / Device Role / Timing Role: Radiation-tolerant voltage reference for DAC output scaling. Use Value: Inherent TID hardness eliminates need for shielding or derating in high-dose zones. | Use Scenario: Setting gate bias for GaN PA stages in manpack radios operating in desert temperature extremes. IC Role / Device Role / Timing Role: Temperature-stable Zener regulator for RF amplifier quiescent current control. Use Value: –0.075 %/°C tempco enables predictable bias point retention from –40 °C to +85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4620D-1 | Same electrical specs but qualified only to JANTXV level (not JANS); lower screening rigor for burn-in and life test. | Suitable for non-space-grade military ground systems where full JANS screening is not mandated. | Select when cost sensitivity outweighs requirement for Class S space qualification. |
| 1N4620UR-1 | Same Zener voltage and tolerance, but in DO-213AA surface-mount package; no axial leads. | Used in automated SMT production lines where through-hole assembly is unavailable or undesirable. | Select when board-level automation and reduced profile are prioritized over hermetic axial reliability. |
Compared with JANS1N4620D-1/TR, JANTXV1N4620D-1 offers identical regulation performance at lower cost and screening depth, while 1N4620UR-1 trades axial lead robustness for SMT compatibility - neither is pin-compatible due to differing packages and qualification levels.
Availability
JANS1N4620D-1/TR is available at Aetrix Electronics and suitable for avionics power supervision, satellite payload reference, and nuclear instrumentation requiring stable component supply with full traceability and extended lifecycle support.
Supply support for JANS1N4620D-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 1N46xx series was designed specifically for military and space applications demanding MIL-qualified Zener regulation with hermetic packaging, metallurgical bonding, and guaranteed radiation tolerance.
FAQ
What is the Zener voltage and tolerance of JANS1N4620D-1/TR?
JANS1N4620D-1/TR has a nominal Zener voltage of 3.3 V with ±1% tolerance at 250 mA test current, as specified in the Microsemi T4-LDS-0245-2 datasheet. This tight tolerance is achieved via post-process binning and is maintained across its full operating temperature range of –65 °C to +175 °C.
Is JANS1N4620D-1/TR radiation hardened?
Yes, JANS1N4620D-1/TR is inherently radiation hard per Microsemi MicroNote 050, with no degradation in Zener voltage or leakage current up to 100 krad(Si) total ionizing dose. Its metallurgically bonded structure and hermetic DO-35 glass package contribute to this hardness without requiring external shielding.
What does the "D" in JANS1N4620D-1/TR signify?
The "D" in JANS1N4620D-1/TR indicates 1% Zener voltage tolerance per the Microsemi part nomenclature guide. The "TR" suffix denotes tape-and-reel packaging per EIA-296 standard, and "JANS" specifies qualification to the highest military reliability level per MIL-PRF-19500/435.
What is the maximum Zener current IZM for JANS1N4620D-1/TR?
JANS1N4620D-1/TR has a maximum Zener current (IZM) of 85 mA at 25 °C, derived from its 500 mW power rating and 3.3 V Zener voltage. Power must be linearly derated above 50 °C ambient, reaching zero dissipation at 175 °C per Figure 2 in the datasheet.
Does JANS1N4620D-1/TR have low noise characteristics?
Yes, JANS1N4620D-1/TR exhibits a noise density of 1 µV/√Hz at 3.3 V and 250 mA, among the lowest in the 1N46xx family. This is confirmed in Table on page 3 of T4-LDS-0245-2 and makes JANS1N4620D-1/TR suitable for precision analog references where voltage noise directly impacts system SNR.
JANS1N4620D-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):
- 1.65 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 µA @ 1.5 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)
JANS1N4620D-1/TR FAQ
1.How can I place an order for JANS1N4620D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4620D-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 JANS1N4620D-1/TR reliable?
The price and inventory of JANS1N4620D-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 JANS1N4620D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4620D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4620D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4620D-1/TR?
JANS1N4620D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4620D-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 JANS1N4620D-1/TR?
For technical support, including JANS1N4620D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4620D-1/TR requirements.
6.How does Aetrix verify that JANS1N4620D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4620D-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 JANS1N4620D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4620D-1/TR?
All JANS1N4620D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4620D-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 JANS1N4620D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4620D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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