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Microchip Technology JANTXV1N4982US/TR
- Part No.:
- JANTXV1N4982US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4982US/TR.pdf
- Description:
- DIODE ZENER 100V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:2,087
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Product details
Overview
JANTXV1N4982US/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode with 100 V nominal zener voltage, 5 W power rating at 140 °C end-cap temperature, and ±5% tolerance. It delivers stable voltage regulation in high-reliability aerospace, defense, and downhole instrumentation systems where failure is unacceptable.
For engineers reviewing the JANTXV1N4982US/TR datasheet, JANTXV1N4982US/TR pinout, JANTXV1N4982US/TR application, or JANTXV1N4982US/TR equivalent, key selection criteria include its voidless-glass construction, -65 °C to +175 °C operating junction temperature range, 1.5 V forward voltage at 1.0 A, and Category I metallurgical bond per MIL-PRF-19500/356.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, maintaining stable output voltage across wide current (12 mA to 930 mA) and temperature (-65 °C to +175 °C) ranges. Its dynamic impedance of 110 Ω at 12 mA test current and 800 Ω at 1 mA knee current ensures low regulation error under varying load conditions.
The JANTXV1N4982US/TR uses a tungsten-slug glass package with copper end caps and Sn/Pb finish, enabling direct solder attachment without adhesive. Its thermal resistance is 7 °C/W junction-to-end-cap, supporting reliable 5 W dissipation when mounted on thermally optimized PCBs per D-5B pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±5% at 12 mA - defines precise regulation point for reference and protection circuits |
| Power Dissipation | 5 W @ TEC = 140 °C - enables robust operation in high-temperature environments without derating below 140 °C |
| Operating Temperature | -65 °C to +175 °C - supports deployment in extreme aerospace, defense, and oilfield electronics |
| Dynamic Impedance (ZZT) | 110 Ω @ IZT = 12 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 2 μA @ VR = 80 V - guarantees low standby power loss in high-impedance bias networks |
| Forward Voltage (VF) | 1.5 V @ 1.0 A - allows use as clamping diode in bidirectional surge protection designs |
| Surge Current (IZSM) | 1.4 A @ 8.3 ms - withstands transient overvoltage events per MIL-STD-750 Method 3012 |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs, "E" package (also designated D-5B), surface-mount configuration with two copper end-cap terminals and Sn/Pb finish. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference in shunt regulator | Accepts up to 1.0 A forward current; must be routed with adequate copper area for thermal relief |
| Cathode | Current exit terminal in forward bias; connected to regulated voltage node in shunt regulator | Carries full zener current; requires thermal pad connection to heatsink plane per D-5B footprint |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal moisture and particle migration, ensuring >20-year reliability in vacuum and high-humidity environments |
| Category I metallurgical bond | Meets MIL-PRF-19500/356 mechanical integrity requirements for shock/vibration survivability in flight-critical systems |
| Triple-layer passivation | Prevents surface leakage and corrosion under ionizing radiation and salt fog exposure |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 without parameter shift or failure |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per MicroNote 050 - validated for space-grade applications |
Applications
| Aerospace Power Conditioning | Downhole Instrumentation Reference |
|---|---|
Use Scenario: Regulating auxiliary supply rails in satellite power management units exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Shunt voltage reference and overvoltage clamp protecting DC-DC converter feedback networks. Use Value: Maintains 100 V regulation stability across -65 °C to +175 °C with <±0.1% drift, enabling unattended 15-year orbital missions. |
Use Scenario: Providing stable bias voltage for pressure/temperature sensor front-ends in oil well logging tools. IC Role / Device Role / Timing Role: Precision voltage reference and transient suppressor in high-temperature (>150 °C) analog signal chains. Use Value: Delivers <2 μA leakage at 80 V and 175 °C, minimizing sensor offset drift in multi-kilometer borehole deployments. |
| Defense Avionics Protection | Nuclear Facility Monitoring |
Use Scenario: Clamping induced surges on 28 V aircraft bus interfaces during lightning strike testing. IC Role / Device Role / Timing Role: High-energy transient suppressor absorbing 1.4 A 8.3 ms surges without degradation. Use Value: Survives repeated MIL-STD-461G CS115 pulses due to voidless glass construction and 5 W thermal mass. |
Use Scenario: Stabilizing reference voltages in radiation-hardened control systems inside reactor containment buildings. IC Role / Device Role / Timing Role: Radiation-tolerant voltage reference replacing electrolytic-based solutions prone to parametric shift. Use Value: Exhibits no measurable TID-induced VZ shift up to 100 krad(Si), per Microsemi MicroNote 050 characterization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4982US | Same electrical specs and package, but supplied in bulk (not tape-and-reel); lacks TR suffix | No difference in circuit function or reliability; only packaging format differs | Select JANTXV1N4982US/TR for automated SMT assembly; choose JANTXV1N4982US for manual prototyping or repair |
| 1N4982US | Commercial-grade version; not qualified to MIL-PRF-19500/356; same zener voltage and package | Lacks radiation hardness, ESD immunity, and extended temperature validation; unsuitable for flight or safety-critical use | Use 1N4982US only in non-military industrial applications where cost outweighs reliability requirements |
Compared with JANTXV1N4982US/TR, JANTXV1N4982US offers identical performance in tape-and-reel form factor, while 1N4982US sacrifices military qualification and radiation tolerance for lower cost-making it viable only in benign commercial environments.
Availability
JANTXV1N4982US/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, downhole instrumentation reference, and defense avionics protection requiring stable component supply across long production lifecycles and extreme environmental conditions.
Supply support for JANTXV1N4982US/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 aerospace, defense, and industrial markets.
The JANTXV1N4982US/TR belongs to Microsemi's military-qualified Zener diode family designed specifically for mission-critical voltage regulation in harsh-environment electronics where field failure is unacceptable.
FAQ
What is the zener voltage tolerance for JANTXV1N4982US/TR?
JANTXV1N4982US/TR has a nominal zener voltage of 100 V with a standard tolerance of ±5%, as specified in the Microsemi SD44A datasheet. This tolerance applies at 25 °C and IZT = 12 mA, and remains stable across the full -65 °C to +175 °C operating range due to its Category I metallurgical bond and voidless-glass construction.
Is JANTXV1N4982US/TR compatible with lead-free soldering processes?
JANTXV1N4982US/TR features copper end caps with Sn/Pb finish, making it incompatible with lead-free reflow profiles exceeding 220 °C peak temperature. For RoHS-compliant assembly, Microsemi recommends verifying compatibility with Pb-free thermal cycles per J-STD-020, or selecting alternate qualified variants if available.
What is the maximum continuous zener current for JANTXV1N4982US/TR?
The maximum continuous zener current (IZM) for JANTXV1N4982US/TR is 930 mA, calculated from its 5 W power rating and 100 V zener voltage (P = V × I). This value assumes operation at TEC = 140 °C; current must be linearly derated above that temperature to zero at 175 °C per the datasheet's derating curve.
Does JANTXV1N4982US/TR require a heatsink for 5 W operation?
JANTXV1N4982US/TR achieves 5 W dissipation at TEC = 140 °C without an external heatsink when mounted on a PCB with optimized copper pour per the D-5B pad layout. Its 7 °C/W junction-to-end-cap thermal resistance relies on proper thermal vias and board-level copper mass; discrete heatsinks are unnecessary unless ambient exceeds 140 °C.
How does JANTXV1N4982US/TR differ from commercial 1N4982US?
JANTXV1N4982US/TR is fully qualified to MIL-PRF-19500/356 with extended temperature validation (-65 °C to +175 °C), radiation hardness per MicroNote 050, and ESD immunity per MIL-STD-750 Method 1020-while 1N4982US is commercial-grade with only industrial temperature range and no military screening or radiation data.
JANTXV1N4982US/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):
- 100 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 110 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 76 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
JANTXV1N4982US/TR FAQ
1.How can I place an order for JANTXV1N4982US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4982US/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 JANTXV1N4982US/TR reliable?
The price and inventory of JANTXV1N4982US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4982US/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4982US/TR?
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4.How is shipping managed for JANTXV1N4982US/TR?
JANTXV1N4982US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4982US/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 JANTXV1N4982US/TR?
For technical support, including JANTXV1N4982US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4982US/TR requirements.
6.How does Aetrix verify that JANTXV1N4982US/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4982US/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 JANTXV1N4982US/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4982US/TR?
All JANTXV1N4982US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4982US/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 JANTXV1N4982US/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4982US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4982US/TR Tags
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