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Microchip Technology JANTXV1N4982DUS/TR
- Part No.:
- JANTXV1N4982DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4982DUS/TR.pdf
- Description:
- DIODE ZENER 100V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,630
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Product details
Overview
JANTXV1N4982DUS/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 100 V ±5%, dynamic impedance of 110 Ω at 12 mA test current, and maximum reverse leakage of 2 μA at 76 V. It serves as a precision voltage reference and overvoltage clamp in radiation-hardened avionics power conditioning circuits.
For engineers reviewing the JANTXV1N4982DUS/TR datasheet, JANTXV1N4982DUS/TR pinout, JANTXV1N4982DUS/TR application, or JANTXV1N4982DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass construction, -65 °C to +175 °C operating range, and Category I metallurgical bond - critical for high-reliability aerospace and defense systems requiring zero-failure tolerance.
Technical Context
This device operates in reverse breakdown mode with tightly controlled Zener voltage regulation across 10%–50% of IZM (1.4 A), exhibiting ΔVZ ≤ 8.0 V under that current range. Its thermal resistance is 7 °C/W junction-to-end-cap, enabling stable regulation up to 175 °C junction temperature when properly heatsinked via end-cap mounting.
The "D-5B" (E) package uses tungsten slugs and copper end caps with Sn/Pb finish, supporting tape-and-reel handling per EIA-481-B. Polarity is marked by cathode band; no surface marking is applied per specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 100 V ±5% at IZT = 12 mA - defines regulated output voltage under nominal bias |
| Power Dissipation | 5 W @ TEC = 140 °C - requires end-cap thermal path to maintain safe junction temperature |
| Dynamic Impedance ZZ | 110 Ω @ IZT = 12 mA - determines voltage deviation under load current transients |
| Max Reverse Leakage IR | 2 μA @ VR = 76 V - ensures minimal standby power loss in high-impedance bias networks |
| Surge Current IZSM | 1.4 A @ 8.3 ms square wave - supports transient overvoltage suppression without failure |
| Operating Temperature | -65 °C to +175 °C - enables deployment in extreme-environment satellite power subsystems |
| Forward Voltage VF | 1.5 V @ 1.0 A - relevant for polarity-check and functional-test circuitry during burn-in |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with two axial end-cap terminals. Case material is hard glass bonded metallurgically to tungsten slugs; terminations are copper end caps with Sn/Pb finish. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to circuit ground or low-side reference | Provides return path for Zener current; must be thermally anchored if used as heat sink |
| Cathode | Negative terminal in forward bias; connected to regulated voltage node | Carries full Zener current; polarity band identifies this terminal for correct PCB orientation |
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 stability under shock, vibration, and thermal cycling per MIL-STD-883 |
| MIL-PRF-19500/356 qualification | Validated screening includes lot acceptance tests for parametric stability, burn-in, and radiation hardness (MicroNote 050) |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 without parameter shift or catastrophic failure |
| Tape-and-reel packaging | EIA-481-B compliant carrier enables automated SMT placement without manual handling or contamination risk |
Applications
| Aerospace Power Bus Regulation | Defense System Overvoltage Protection |
|---|---|
Use Scenario: Regulating auxiliary 100 V DC bus in satellite power distribution units where input voltage varies ±15% due to solar array fluctuations. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and crowbar element during overvoltage events. Use Value: Maintains bus stability within ±0.5 V using 110 Ω dynamic impedance and 5 W dissipation capability at 140 °C end-cap temperature. |
Use Scenario: Clamping transient spikes on 100 V weapon control interface lines exposed to EMP and lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt protector triggered at 100 V breakdown, diverting 1.4 A surge for 8.3 ms. Use Value: Survives repetitive 1.4 A surges without degradation due to voidless-glass construction and Category I bond reliability. |
| Radiation-Hardened Instrumentation Reference | High-Temperature Downhole Sensor Biasing |
Use Scenario: Providing stable 100 V bias for ionization chamber detectors in nuclear reactor monitoring systems. IC Role / Device Role / Timing Role: Precision Zener reference with <0.1%/°C tempco, hardened against total ionizing dose (TID). Use Value: Delivers <±0.5% voltage drift over -65 °C to +175 °C and >100 krad(Si) TID per MicroNote 050. |
Use Scenario: Supplying regulated bias to piezoelectric pressure sensors in oil/gas well logging tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable shunt regulator maintaining sensor excitation voltage despite thermal gradients. Use Value: Operates continuously at 175 °C junction temperature with 7 °C/W thermal resistance and validated storage life at temperature extremes. |
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 | No TR suffix; bulk packaging instead of tape-and-reel; identical electrical specs and qualification | Preferred for manual prototyping or low-volume hand-soldered assemblies | Select JANTXV1N4982DUS/TR for automated SMT production; choose JANTXV1N4982US for bench evaluation or repair spares |
| 1N4982US | Commercial-grade (non-military); lacks JAN/JANTXV screening, radiation hardness data, and Category I bond validation | Suitable only for non-critical industrial applications below 125 °C ambient | Use 1N4982US only where MIL-spec compliance, extended temperature operation, or radiation tolerance is not required |
Compared with JANTXV1N4982US and 1N4982US, the JANTXV1N4982DUS/TR provides verified tape-and-reel compatibility for high-yield SMT assembly, full MIL-PRF-19500/356 screening, and documented performance at 175 °C - making it the sole option for flight-critical avionics voltage regulation.
Availability
JANTXV1N4982DUS/TR is available at Aetrix Electronics and suitable for aerospace power bus regulation, defense system overvoltage protection, and radiation-hardened instrumentation reference requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTXV1N4982DUS/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened and high-temperature operation.
The JANTXV1N4982DUS/TR belongs to Microsemi's legacy 1N49xxUS military Zener series, engineered specifically for zero-failure-tolerance applications in spaceflight, missile guidance, and nuclear instrumentation where long-term parametric stability under extreme stress is mandatory.
FAQ
What is the Zener voltage tolerance for JANTXV1N4982DUS/TR?
The JANTXV1N4982DUS/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 with test current IZT = 12 mA 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 JANTXV1N4982DUS/TR require derating above 140 °C end-cap temperature?
Yes, JANTXV1N4982DUS/TR must be linearly derated above 140 °C end-cap temperature, reaching zero power dissipation at 175 °C. The derating slope is 5 W / 35 °C = 143 mW/°C. This requirement is defined in the Maximum Ratings table of the SD44A datasheet and reflects the thermal limit of the voidless-glass package's junction-to-end-cap conduction path.
Is JANTXV1N4982DUS/TR compatible with lead-free reflow processes?
No, JANTXV1N4982DUS/TR features Sn/Pb finish on copper end caps and is not qualified for lead-free reflow. Its maximum peak reflow temperature is limited to 235 °C per MIL-STD-202 Method 210, consistent with tin-lead solder profiles. Lead-free assembly would risk intermetallic formation, bond degradation, and hermeticity loss in the voidless-glass structure.
What is the meaning of the "DUS/TR" suffix in JANTXV1N4982DUS/TR?
In JANTXV1N4982DUS/TR, "DUS" denotes the D-5B (E) package with voidless-glass hermetic seal and cathode band marking, while "TR" indicates tape-and-reel packaging per EIA-481-B. The full suffix distinguishes this variant from bulk-packaged JANTXV1N4982US and commercial 1N4982US versions, confirming both military qualification and SMT-ready delivery format.
How does the Category I metallurgical bond affect reliability of JANTXV1N4982DUS/TR?
The Category I metallurgical bond in JANTXV1N4982DUS/TR refers to a high-integrity internal bond between the silicon die and tungsten slug, qualified per MIL-PRF-19500/356 for mechanical robustness under shock, vibration, and thermal cycling. This bond prevents delamination and parameter drift during 20+ year missions in orbit or deep underground, directly enabling the device's zero-failure-tolerance rating.
JANTXV1N4982DUS/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:
- ±1%
- 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
JANTXV1N4982DUS/TR FAQ
1.How can I place an order for JANTXV1N4982DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4982DUS/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 JANTXV1N4982DUS/TR reliable?
The price and inventory of JANTXV1N4982DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4982DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4982DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4982DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4982DUS/TR?
JANTXV1N4982DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4982DUS/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 JANTXV1N4982DUS/TR?
For technical support, including JANTXV1N4982DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4982DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4982DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4982DUS/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 JANTXV1N4982DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4982DUS/TR?
All JANTXV1N4982DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4982DUS/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 JANTXV1N4982DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4982DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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