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Microchip Technology JANTXV1N4980CUS/TR
- Part No.:
- JANTXV1N4980CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4980CUS/TR.pdf
- Description:
- DIODE ZENER 82V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,105
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Product details
Overview
JANTXV1N4980CUS/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 a nominal Zener voltage of 82 V ±1% (C suffix), dynamic impedance of 80 Ω at 15 mA test current, and operating junction temperature range of −65 °C to +175 °C. It serves as a precision voltage reference and overvoltage clamp in high-reliability aerospace power conditioning circuits.
For engineers reviewing the JANTXV1N4980CUS/TR datasheet, JANTXV1N4980CUS/TR pinout, JANTXV1N4980CUS/TR application, or JANTXV1N4980CUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass hermetic construction, −65 °C to +175 °C operation, 82 V ±1% regulation, and 5 W thermal capability with 7 °C/W junction-to-end-cap resistance.
Technical Context
This device belongs to the JANTXV-classified 1N49xxUS series, featuring triple-layer passivation and Category I internal metallurgical bonds per MIL-PRF-19500/356. Its Zener breakdown mechanism delivers stable regulation across 10%–50% of IZM (1.8 A), with voltage change ΔVZ ≤ 6.6 V under that current range.
The "E" package (D-5B) uses tungsten slugs and copper end caps with Sn/Pb finish, enabling direct solder attachment without adhesive. Polarity is marked by a cathode band, and it supports EIA-481-B tape-and-reel packaging for automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 82 V ±1% at 15 mA - enables precise 82 V reference or clamping with tight tolerance for mission-critical voltage stabilization |
| Power Dissipation | 5 W @ TEC = 140 °C - supports sustained regulation in high-temperature avionics enclosures without derating until 175 °C |
| Dynamic Impedance (ZZ) | 80 Ω @ IZT = 15 mA - ensures low output impedance for minimal voltage shift under load transients |
| Max Reverse Leakage (IR) | 2 μA @ VR = 65.6 V - guarantees negligible standby current in high-impedance bias networks |
| Junction Temperature Range | −65 °C to +175 °C - validated for operation in extreme environments including space-grade thermal cycling and jet engine bays |
| Thermal Resistance (RθJC) | 7 °C/W junction-to-end-cap - allows efficient heat transfer to PCB copper or heatsink via end-cap soldering |
| Surge Current (IZSM) | 1.8 A @ 8.3 ms - withstands lightning-induced transients and inductive kickback in DC bus protection |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with tungsten slugs and copper end caps finished with Sn/Pb. Cathode indicated by band. Weight: 539 mg. Tape-and-reel compliant per EIA-481-B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener knee reference | Soldered to ground or low-side return path; establishes reference node for reverse-biased operation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to supply rail requiring stabilization; voltage at this node clamps at 82 V ±1% during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Prevents moisture ingress and long-term parameter drift in humid or vacuum environments (e.g., satellite payloads) |
| Category I metallurgical bond | Ensures mechanical integrity and thermal cycle reliability exceeding 1000 cycles between −65 °C and +175 °C |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for on-board ESD protection circuitry during handling and assembly |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050 for total ionizing dose (TID) up to 100 krad(Si), suitable for LEO missions |
| Triple-layer passivation | Blocks surface contamination and leakage paths, maintaining <2 μA reverse leakage after 1000 hrs at 125 °C |
Applications
| Aerospace Power Bus Protection | High-Temperature Downhole Instrumentation |
|---|---|
Use Scenario: Clamping transient overvoltages on 70–100 V DC distribution buses in satellite power systems during solar array switching or fault isolation. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp bus voltage at 82 V, protecting downstream DC-DC converters and FPGAs. Use Value: Prevents >100 V spikes from damaging radiation-hardened electronics; leverages 1.8 A surge rating and −65 °C to +175 °C operation across orbital thermal extremes. |
Use Scenario: Providing stable 82 V reference for analog front-end calibration in oil/gas well logging tools exposed to 150 °C ambient downhole temperatures. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC biasing and sensor excitation, leveraging ±1% tolerance and low ΔVZ. Use Value: Maintains calibration accuracy over full temperature range without external compensation; hermetic seal prevents parameter shift in corrosive hydrocarbon environments. |
| Military Vehicle Power Conditioning | Radiation-Hardened Test Equipment |
Use Scenario: Regulating auxiliary 82 V rails in armored vehicle electronic control units subjected to engine cranking dips and load dump surges. IC Role / Device Role / Timing Role: Shunt regulator maintaining stable bias for high-side gate drivers and CAN transceivers during 24 V system transients. Use Value: Delivers 5 W continuous dissipation with 7 °C/W thermal resistance-enables direct PCB copper heatsinking without discrete heatsinks. |
Use Scenario: Serving as a traceable, NIST-traceable 82 V calibration standard in radiation test chambers where component degradation must be excluded from measurement uncertainty. IC Role / Device Role / Timing Role: Primary voltage reference in metrology-grade calibrators, relying on hermetic stability and radiation hardness. Use Value: Eliminates recalibration drift between irradiation cycles; ±1% tolerance and <2 μA leakage ensure sub-0.01% measurement uncertainty contribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4980DUS/TR | Same 82 V nominal voltage but ±2% tolerance (D suffix); otherwise identical ratings and package | Accepts wider voltage variation in non-critical bias networks where ±1% is not required | Select when tighter tolerance is unnecessary and cost optimization is prioritized |
| 1N4980US | Commercial-grade version (non-JANTXV); same electrical specs but no MIL-PRF-19500/356 qualification or radiation hardness data | Restricted to non-mission-critical industrial or lab equipment where extended temperature and radiation immunity are not mandated | Choose only for prototyping or non-flight hardware where MIL-spec documentation and screening are waived |
Compared with JANTXV1N4980DUS/TR and 1N4980US, the JANTXV1N4980CUS/TR uniquely combines ±1% tolerance, full MIL-PRF-19500/356 screening, and documented radiation hardness-making it the sole option for flight-certified 82 V reference/clamp functions in DoD and NASA programs.
Availability
JANTXV1N4980CUS/TR is available at Aetrix Electronics and suitable for aerospace power bus protection, high-temperature downhole instrumentation, and military vehicle power conditioning requiring stable component supply across extended temperature and radiation-exposed environments.
Supply support for JANTXV1N4980CUS/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, radiation-hardened, and military-qualified components for aerospace, defense, and industrial markets.
The JANTXV1N4980CUS/TR belongs to Microsemi's legacy 1N49xxUS Zener series-designed specifically for high-stability voltage regulation in mission-critical systems where hermetic sealing, extreme temperature operation, and MIL-spec compliance are mandatory.
FAQ
What is the Zener voltage tolerance of JANTXV1N4980CUS/TR?
The JANTXV1N4980CUS/TR has a Zener voltage tolerance of ±1%, indicated by the "C" suffix in the part number. This is confirmed in the Electrical Characteristics table on page 2 of the SD44A.pdf datasheet, where VZ = 82 V at IZT = 15 mA with ΔVZ ≤ 6.6 V across 10–50% of IZM. The ±1% tolerance supports precision regulation in flight-critical avionics reference circuits.
Is JANTXV1N4980CUS/TR qualified to MIL-PRF-19500/356?
Yes, JANTXV1N4980CUS/TR is explicitly qualified to MIL-PRF-19500/356 under the JANTXV screening level, as stated in the Features section and Maximum Ratings table of the SD44A.pdf datasheet. This includes extended temperature testing, burn-in, and lot acceptance testing per military requirements-ensuring suitability for Class H and Class K applications.
What is the maximum power dissipation of JANTXV1N4980CUS/TR and at what temperature condition?
JANTXV1N4980CUS/TR is rated for 5 W power dissipation at an end-cap temperature (TEC) of 140 °C, with linear derating to zero at 175 °C. This value is specified in the Maximum Ratings table on page 1 of SD44A.pdf and applies to the full 1N4954US–1N4996US family, including JANTXV1N4980CUS/TR.
Does JANTXV1N4980CUS/TR have radiation hardness certification?
Yes, JANTXV1N4980CUS/TR exhibits inherent radiation hardness as documented in Microsemi MicroNote 050, referenced in the Features section of SD44A.pdf. It is characterized for total ionizing dose (TID) resilience up to 100 krad(Si), making it suitable for low-Earth orbit (LEO) satellite applications without additional shielding.
What package type does JANTXV1N4980CUS/TR use and how is polarity marked?
JANTXV1N4980CUS/TR uses the hermetically sealed "E" package (also known as D-5B), with voidless glass construction, tungsten slugs, and copper end caps with Sn/Pb finish. Polarity is marked by a visible cathode band on the glass body, as shown in the Appearance and Mechanical and Packaging sections of SD44A.pdf.
JANTXV1N4980CUS/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):
- 82 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 62.2 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
JANTXV1N4980CUS/TR FAQ
1.How can I place an order for JANTXV1N4980CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4980CUS/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 JANTXV1N4980CUS/TR reliable?
The price and inventory of JANTXV1N4980CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4980CUS/TR is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4980CUS/TR transactions.
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4.How is shipping managed for JANTXV1N4980CUS/TR?
JANTXV1N4980CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4980CUS/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 JANTXV1N4980CUS/TR?
For technical support, including JANTXV1N4980CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4980CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4980CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4980CUS/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 JANTXV1N4980CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4980CUS/TR?
All JANTXV1N4980CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4980CUS/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 JANTXV1N4980CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4980CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4980CUS/TR Tags
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