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Microchip Technology JANTXV1N4982CUS/TR
- Part No.:
- JANTXV1N4982CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4982CUS/TR.pdf
- Description:
- DIODE ZENER 100V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,199
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Product details
Overview
JANTXV1N4982CUS/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 ±2% (C-suffix), dynamic impedance of 110 Ω at 12 mA test current, and operating junction temperature range from –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 JANTXV1N4982CUS/TR datasheet, JANTXV1N4982CUS/TR pinout, JANTXV1N4982CUS/TR application, or JANTXV1N4982CUS/TR equivalent, this part is selected for mission-critical voltage regulation where long-term stability, radiation tolerance, and ESD immunity per MIL-STD-750 Method 1020 are required.
Technical Context
This device belongs to the JANTXV-qualified 1N4954US–1N4996US series, featuring voidless hermetic glass construction with internal Category I metallurgical bonds and triple-layer passivation. It operates in reverse breakdown mode with regulated voltage maintained across 10% to 50% of maximum Zener current (IZM = 930 mA).
Its thermal resistance is 7 °C/W (junction-to-end-cap), enabling stable regulation under sustained 5 W dissipation when mounted on thermally optimized PCB pads. The cathode band marking and Sn/Pb-finished copper end caps support manual and automated assembly per EIA-481-B tape-and-reel packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 100 V ±2% at 12 mA - ensures tight regulation tolerance for precision reference applications |
| Power Dissipation | 5 W @ TEC = 140 °C - defines maximum continuous thermal load without derating |
| Dynamic Impedance (ZZ) | 110 Ω @ IZT = 12 mA - determines output voltage variation under load transients |
| Max Reverse Leakage (IR) | 2 μA @ VR = 80 V - guarantees low standby current in high-impedance bias networks |
| Junction Temperature Range | –65 °C to +175 °C - supports operation in extreme environmental conditions including space and jet engine bays |
| Forward Voltage (VF) | 1.50 V @ 1.0 A - enables use as a low-loss forward-path diode in dual-role protection circuits |
| Surge Current (IZSM) | 1.4 A @ 8.3 ms - withstands transient overvoltage events such as lightning-induced spikes |
Pinout & Package
Package: Hermetically sealed voidless hard glass case ("E" or "D-5B") with copper end caps finished in Sn/Pb; polarity indicated by cathode band; weight 539 mg; tape-and-reel compliant per EIA-481-B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to circuit ground or lower potential node during normal forward bias operation |
| Cathode | Zener breakdown terminal / high-side connection | Connected to regulated voltage rail; marked by visible band; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal moisture and particle migration, ensuring >20-year parametric stability in vacuum and humid environments |
| Category I metallurgical bond | Provides mechanical integrity and thermal cycling reliability exceeding 1000 cycles between –65 °C and +175 °C |
| Nonsensitive to ESD | Withstands human-body-model discharges ≥15 kV without parameter shift or failure per MIL-STD-750 Method 1020 |
| Inherent radiation hardness | Qualified to 100 krad(Si) total ionizing dose without degradation, per Microsemi MicroNote 050 |
| Triple-layer passivation | Prevents surface leakage and contamination-induced drift in high-humidity or salt-fog operational settings |
Applications
| Aerospace Power Bus Regulation | Satellite Payload Voltage Reference |
|---|---|
Use Scenario: Regulating 100 V primary bus in launch vehicle avionics under wide thermal and radiation exposure. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator and overvoltage clamp. Use Value: Maintains ±2% output stability across –65 °C to +175 °C while surviving 100 krad(Si) TID exposure. |
Use Scenario: Providing stable 100 V reference for ADC biasing and sensor excitation in LEO satellite payloads. IC Role / Device Role / Timing Role: Precision voltage reference element in analog front-end calibration circuitry. Use Value: Delivers <2 μA leakage at 80 V reverse bias, minimizing current draw from limited battery reserves. |
| Jet Engine Control Unit Protection | Military Radar Transmitter Biasing |
Use Scenario: Clamping transient surges on 100 V DC distribution lines in FADEC systems exposed to EMI and thermal shock. IC Role / Device Role / Timing Role: Overvoltage protection device absorbing 8.3 ms surge events up to 1.4 A. Use Value: Survives repeated 1.4 A surges without parameter shift due to robust glass/metal construction. |
Use Scenario: Stabilizing high-voltage bias rails in GaN-based radar transmitter modules operating at 100 V. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant bias voltage despite load-current fluctuations. Use Value: 110 Ω dynamic impedance limits voltage deviation to <1.2 V under 100 mA step-load changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4982US/TR | Same 100 V rating but ±5% tolerance (no suffix); higher max leakage (5 μA @ 80 V) | Acceptable where tighter voltage accuracy is not required and cost sensitivity is higher | Select JANTXV1N4982US/TR only if system-level calibration compensates for wider tolerance |
| 1N4982US | Commercial-grade version; no JANTXV qualification; lacks radiation hardness and extended temperature validation | Restricted to non-mission-critical industrial controls with ambient temperature <85 °C | Use 1N4982US only in non-aerospace, non-military designs with verified thermal margin and no radiation exposure |
Compared with JANTXV1N4982US/TR and 1N4982US, the JANTXV1N4982CUS/TR delivers superior voltage accuracy (±2% vs ±5% or unqualified), lower leakage, and validated performance across –65 °C to +175 °C and 100 krad(Si), making it the sole choice for flight-critical regulation.
Availability
JANTXV1N4982CUS/TR is available at Aetrix Electronics and suitable for aerospace power regulation, satellite payload reference, and military radar biasing requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTXV1N4982CUS/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 JANTXV1N4982CUS/TR belongs to Microsemi's military-qualified Zener diode product line, engineered specifically for voltage regulation and transient suppression in mission-critical systems operating under extreme thermal, radiation, and mechanical stress.
FAQ
What is the Zener voltage tolerance of JANTXV1N4982CUS/TR?
The JANTXV1N4982CUS/TR has a nominal Zener voltage of 100 V with a tolerance of ±2%, indicated by the "C" suffix in the part number. This tighter tolerance is achieved through post-manufacturing screening and is validated per MIL-PRF-19500/356 requirements for JANTXV-grade devices.
Does JANTXV1N4982CUS/TR require heatsinking in standard PCB layouts?
JANTXV1N4982CUS/TR achieves 5 W power dissipation at TEC = 140 °C with a thermal resistance of 7 °C/W junction-to-end-cap. Heatsinking is not required if the PCB pad layout follows Microsemi's recommended "D-5B" footprint with adequate copper area; however, thermal vias beneath the end caps improve margin in sustained high-power operation.
Is JANTXV1N4982CUS/TR compatible with lead-free reflow processes?
No - JANTXV1N4982CUS/TR features Sn/Pb-finished copper end caps and is qualified for eutectic solder reflow only. Its glass package is not rated for peak temperatures above 220 °C, making it incompatible with standard lead-free (260 °C) reflow profiles. Lead-free assembly requires explicit process validation and is not supported per Microsemi documentation.
What is the maximum reverse leakage current for JANTXV1N4982CUS/TR at 80 V?
The maximum reverse leakage current for JANTXV1N4982CUS/TR is 2 μA at VR = 80 V and TA = 25 °C, as specified in the Electrical Characteristics table. This value remains ≤5 μA across the full –65 °C to +175 °C operating range per qualification testing.
Can JANTXV1N4982CUS/TR be used in forward-bias applications?
Yes - JANTXV1N4982CUS/TR exhibits a maximum forward voltage of 1.50 V at 1.0 A, enabling use as a low-drop rectifier or crowbar element in dual-function protection circuits. However, its primary design intent and qualification focus remain reverse-bias Zener regulation and clamping.
JANTXV1N4982CUS/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:
- ±2%
- 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
JANTXV1N4982CUS/TR FAQ
1.How can I place an order for JANTXV1N4982CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4982CUS/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 JANTXV1N4982CUS/TR reliable?
The price and inventory of JANTXV1N4982CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4982CUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4982CUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4982CUS/TR transactions.
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4.How is shipping managed for JANTXV1N4982CUS/TR?
JANTXV1N4982CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4982CUS/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 JANTXV1N4982CUS/TR?
For technical support, including JANTXV1N4982CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4982CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4982CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4982CUS/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 JANTXV1N4982CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4982CUS/TR?
All JANTXV1N4982CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4982CUS/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 JANTXV1N4982CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4982CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4982CUS/TR Tags
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