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Microchip Technology JANTXV1N4983US/TR
- Part No.:
- JANTXV1N4983US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4983US/TR.pdf
- Description:
- DIODE ZENER 110V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:4,597
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Product details
Overview
JANTXV1N4983US/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode rated for 5 W power dissipation at 140 °C end-cap temperature, with nominal Zener voltage of 110 V ±5%, dynamic impedance of 125 Ω at 12 mA test current, and maximum reverse leakage of 2 μA at 83.6 V. It serves as a precision voltage reference and overvoltage clamp in high-reliability aerospace power conditioning circuits.
For engineers reviewing the JANTXV1N4983US/TR datasheet, JANTXV1N4983US/TR pinout, JANTXV1N4983US/TR application, or JANTXV1N4983US/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass hermetic package, -65 °C to +175 °C operating range, radiation-hardened construction, and 110 V regulation stability under wide current and thermal variation.
Technical Context
This device operates in reverse breakdown mode with tightly controlled Zener voltage regulation across 10%–50% of IZM (1.2 A), exhibiting ΔVZ ≤ 9.0 V per specification. Its triple-layer passivation and Category I metallurgical bond ensure long-term stability in harsh environments.
The "E" package (D-5B) uses tungsten slugs and copper end caps with Sn/Pb finish, enabling direct solder attachment without adhesive. Thermal resistance is 7 °C/W junction-to-end-cap, supporting reliable 5 W operation up to 140 °C end-cap temperature before linear derating to zero at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 110 V ±5% at 12 mA - defines stable regulation point for high-voltage reference or clamping |
| Power Dissipation | 5 W @ TEC = 140 °C - enables robust operation in conduction-cooled avionics power rails |
| Dynamic Impedance ZZ | 125 Ω @ IZT = 12 mA - ensures low voltage deviation under load transients |
| Max Reverse Leakage IR | 2 μA @ VR = 83.6 V - guarantees minimal standby current in high-impedance bias networks |
| Operating Temperature | -65 °C to +175 °C - supports deployment in space-grade and jet-engine-mounted electronics |
| Surge Current IZSM | 18.7 A @ 8.3 ms - withstands lightning-induced transients per DO-160 Section 22 |
| Forward Voltage VF | 1.50 V @ 1.0 A - allows use as polarity-protected rectifier in low-duty-cycle protection paths |
Pinout & Package
The JANTXV1N4983US/TR uses the "E" package (also designated D-5B), a surface-mount hermetic glass case with two axial end-cap terminals. Cathode is marked by a band on the glass body. No internal leads or die pads are exposed; electrical connection is made solely through the metallized end caps.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference node for Zener breakdown | Connected to lower-potential rail; establishes regulated voltage drop toward cathode |
| Cathode (banded end) | Regulated output node | Provides stable 110 V relative to anode; used for voltage reference or clamping sink |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Prevents moisture ingress and internal corrosion over 20+ year mission life in vacuum or humid environments |
| Category I metallurgical bond | Ensures mechanical integrity and thermal cycling reliability beyond 1000 cycles between -65 °C and +175 °C |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for on-board ESD protection circuitry in handling and assembly |
| Inherent radiation hardness | Validated per MicroNote 050 for total ionizing dose > 100 krad(Si), suitable for LEO and GEO satellite systems |
| Tape-and-reel packaging (EIA-481-B) | Enables automated pick-and-place assembly in Class 8 cleanrooms without manual handling |
Applications
| Aerospace Power Bus Protection | Satellite Voltage Reference |
|---|---|
Use Scenario: Clamping transient overvoltages on 100 V primary power buses in launch vehicle telemetry modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt overvoltage protector, diverting surge energy to ground during ESD or switching events. Use Value: Withstands 18.7 A surges per DO-160 Section 22 and maintains regulation within ±5% across -65 °C to +175 °C ambient. |
Use Scenario: Providing stable 110 V reference for ADC biasing and sensor excitation in star tracker electronics. IC Role / Device Role / Timing Role: Precision voltage reference source with <2 μA leakage at 76% of VZ, minimizing current draw from limited battery reserves. Use Value: Radiation-hardened construction ensures no parametric shift after 100 krad(Si) exposure, preserving calibration integrity. |
| Avionics Signal Conditioning | Military Radar Bias Supply |
Use Scenario: Regulating auxiliary supply for op-amp front-ends in flight control actuator feedback sensors. IC Role / Device Role / Timing Role: Low-noise Zener reference stabilizing gain-setting networks against thermal drift. Use Value: 125 Ω dynamic impedance minimizes AC ripple coupling into analog signal paths at frequencies up to 10 kHz. |
Use Scenario: Establishing fixed bias points for GaN RF amplifier stages in airborne early warning radar transceivers. IC Role / Device Role / Timing Role: High-voltage Zener clamp protecting gate drivers from voltage overshoot during fast switching. Use Value: Hermetic glass package prevents parameter shift under high humidity and vibration conditions typical in rotary-wing platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTX1N4983US/TR | Same Zener voltage and package, but qualified to MIL-PRF-19500/356 Class B (JANTX) instead of Class S (JANTXV); lower screening level, no burn-in or lot acceptance testing | Acceptable for non-critical subsystems where full JANTXV screening is not mandated | Select JANTX1N4983US/TR only when radiation tolerance and extended temperature validation are not required |
| 1N4983US | Commercial-grade version; no MIL-PRF-19500 qualification, wider temp range (-65 °C to +150 °C), no radiation hardness data | Restricted to ground-based industrial equipment with benign environmental profiles | Use 1N4983US only in cost-sensitive, non-mission-critical designs with full lifecycle traceability waived |
Compared with JANTXV1N4983US/TR, JANTX1N4983US/TR offers reduced screening rigor and lower cost but lacks burn-in and radiation assurance, while 1N4983US omits all military qualifications and thermal/radiation specifications-making JANTXV1N4983US/TR the sole choice for flight-critical voltage regulation.
Availability
JANTXV1N4983US/TR is available at Aetrix Electronics and suitable for aerospace power bus protection, satellite voltage reference, and avionics signal conditioning requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTXV1N4983US/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 (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 JANTXV1N4983US/TR belongs to Microsemi's military-qualified Zener regulator family designed specifically for voltage stabilization and transient suppression in safety-critical electronic systems operating under extreme thermal, mechanical, and radiation stress.
FAQ
What is the Zener voltage tolerance for JANTXV1N4983US/TR?
The JANTXV1N4983US/TR has a nominal Zener voltage of 110 V with a standard tolerance of ±5%, as specified in the Microsemi SD44A datasheet. This tolerance applies at 25 °C and 12 mA test current, and is maintained across the full -65 °C to +175 °C operating range per MIL-PRF-19500/356 screening requirements. Tighter tolerances are not offered for this specific JANTXV variant.
Does JANTXV1N4983US/TR require external heat sinking?
No, JANTXV1N4983US/TR does not require external heat sinking when operated within its 5 W rating at end-cap temperature ≤140 °C. Its 7 °C/W junction-to-end-cap thermal resistance allows direct PCB pad conduction cooling. However, thermal vias and copper pour beneath the end caps are recommended to maintain safe junction temperatures under sustained 5 W dissipation.
Is JANTXV1N4983US/TR compatible with lead-free reflow processes?
JANTXV1N4983US/TR features Sn/Pb-finished copper end caps and is qualified for traditional eutectic solder reflow only. It is not rated for Pb-free reflow profiles (e.g., SAC305 peak ≥245 °C), as the glass-to-metal seal and internal metallurgy were validated under MIL-STD-202 Method 210 conditions using tin-lead solder. Lead-free assembly may compromise hermeticity.
What is the maximum continuous Zener current for JANTXV1N4983US/TR?
The maximum continuous Zener current (IZM) for JANTXV1N4983US/TR is 1.2 A, derived from its 5 W power rating and 110 V nominal Zener voltage (P = V × I). This value assumes operation at TEC = 140 °C; current must be linearly derated above that temperature, reaching zero at 175 °C per the datasheet's derating curve.
How is polarity identified on JANTXV1N4983US/TR?
Polarity on JANTXV1N4983US/TR is indicated by a single black band on the glass body, denoting the cathode terminal. The unbanded end is the anode. This marking complies with JEDEC standards and is visible post-soldering, enabling visual verification during inspection and rework of the JANTXV1N4983US/TR.
JANTXV1N4983US/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, E
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 83.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 1 A
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/356
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- E-MELF
JANTXV1N4983US/TR FAQ
1.How can I place an order for JANTXV1N4983US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4983US/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 JANTXV1N4983US/TR reliable?
The price and inventory of JANTXV1N4983US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4983US/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4983US/TR?
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4.How is shipping managed for JANTXV1N4983US/TR?
JANTXV1N4983US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4983US/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 JANTXV1N4983US/TR?
For technical support, including JANTXV1N4983US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4983US/TR requirements.
6.How does Aetrix verify that JANTXV1N4983US/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4983US/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 JANTXV1N4983US/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4983US/TR?
All JANTXV1N4983US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4983US/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 JANTXV1N4983US/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4983US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4983US/TR Tags
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