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Microchip Technology JANS1N4982CUS/TR
- Part No.:
- JANS1N4982CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANS1N4982CUS/TR.pdf
- Description:
- DIODE ZENER 100V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,943
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Product details
Overview
JANS1N4982CUS/TR from Microsemi is a military-grade, voidless-hermetically sealed surface-mount 5 W Zener diode with nominal Zener voltage of 100 V, ±2% tolerance (C suffix), and 12 mA test current. It operates from –65 °C to +175 °C and delivers stable voltage regulation in high-reliability power conditioning circuits for aerospace and defense systems.
For engineers reviewing the JANS1N4982CUS/TR datasheet, JANS1N4982CUS/TR pinout, JANS1N4982CUS/TR application, or JANS1N4982CUS/TR equivalent, key selection criteria include its 100 V Zener voltage, 5 W power rating at TEC = 140 °C, hermetic glass package, MIL-PRF-19500/356 qualification, and radiation-hardened construction.
Technical Context
This JANS1N4982CUS/TR belongs to the 1N4954US–1N4996US family and uses Category I internal metallurgical bonds per MIL-PRF-19500/356. Its voidless-glass hermetic seal ensures zero moisture ingress and long-term parameter stability under thermal cycling and high-humidity environments.
The device exhibits 110 Ω dynamic impedance at IZT = 12 mA and 800 Ω at IZK = 1 mA, with reverse leakage ≤2 μA at 76 V and forward voltage ≤1.5 V at 1.0 A. Thermal resistance is 7 °C/W junction-to-end-cap, enabling robust thermal management in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 100 V ±2% at IZT = 12 mA - precise reference for high-voltage biasing and overvoltage clamping |
| Power Dissipation | 5 W @ TEC = 140 °C - supports continuous operation in high-temperature avionics enclosures |
| Dynamic Impedance ZZT | 110 Ω @ IZT = 12 mA - low AC impedance ensures minimal output voltage ripple under load transients |
| Max Reverse Leakage IR | 2 μA @ VR = 76 V - ultra-low leakage preserves accuracy in high-impedance sensing nodes |
| Operating Temperature | –65 °C to +175 °C - qualified for extreme-environment deployment without derating penalties |
| Thermal Resistance θJC | 7 °C/W junction-to-end-cap - enables direct thermal path to heatsink or PCB copper pour |
| Surge Current IZSM | 1.4 A @ 8.3 ms - withstands transient overvoltage events per MIL-STD-1275 and DO-160 |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs; end caps are copper with Sn/Pb finish; polarity indicated by cathode band; weight 539 mg; EIA-481-B tape-and-reel compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; carries full surge current during clamping |
| Cathode | Zener breakdown terminal | Marked with band; connected to regulated output node; defines reference potential in shunt regulator topologies |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Zero moisture permeation and no internal voids - eliminates parameter drift due to humidity or outgassing |
| Category I metallurgical bond | High-strength internal bond per MIL-PRF-19500/356 - ensures mechanical integrity under shock/vibration up to 100 g |
| Triple-layer passivation | Enhanced surface insulation - prevents leakage paths and contamination-induced failure in harsh chemical environments |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no handling precautions required beyond standard static-safe protocols |
| Inherent radiation hardness | Validated per MicroNote 050 - functional up to 100 krad(Si) total ionizing dose without parameter shift |
Applications
| Aerospace Power Bus Protection | Defense Radar Bias Supply |
|---|---|
Use Scenario: Clamping transient spikes on 28 V DC aircraft bus during load dump or generator switching. IC Role / Device Role / Timing Role: Shunt Zener regulator acting as primary overvoltage protection element. Use Value: Withstands 1.4 A surge at 8.3 ms and maintains <2 μA leakage at 76 V, ensuring system-level fault containment without false triggering. |
Use Scenario: Providing stable 100 V bias to GaN RF power amplifier stages in airborne radar transceivers. IC Role / Device Role / Timing Role: Precision voltage reference and current-limiting shunt in high-frequency bias network. Use Value: ±2% tolerance and 110 Ω dynamic impedance ensure <±0.5 V regulation across temperature and aging, preserving amplifier linearity. |
| Satellite Payload Voltage Reference | Nuclear Instrumentation Signal Conditioning |
Use Scenario: Generating stable 100 V reference for charge-sensitive preamplifiers in space-based particle detectors. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference source in low-noise analog front-end. Use Value: Inherent TID hardness to 100 krad(Si) and –65 °C to +175 °C operation eliminate need for shielding or derating in LEO missions. |
Use Scenario: Regulating detector bias voltage in reactor monitoring systems exposed to neutron flux and gamma radiation. IC Role / Device Role / Timing Role: High-reliability shunt regulator maintaining calibration integrity under sustained radiation exposure. Use Value: Zero parameter shift after irradiation and triple-layer passivation prevent surface degradation in high-radiation containment zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4982CUS/TR | Same electrical specs but rated for 100% screening to JANTXV level (including burn-in and life test); higher screening cost | Required for Class H (high reliability) programs where extended life testing is mandated | Select JANTXV1N4982CUS/TR when full MIL-PRF-19500/356 JANTXV screening is contractually required |
| 1N4982CUS/TR | Commercial-grade version; identical Zener voltage, tolerance, and package but not MIL-qualified or radiation tested | Suitable only for non-military industrial applications with ambient temperature <+125 °C | Choose 1N4982CUS/TR for cost-sensitive terrestrial designs where radiation hardness and extended temp range are unnecessary |
Compared with JANTXV1N4982CUS/TR and 1N4982CUS/TR, the JANS1N4982CUS/TR uniquely satisfies full JAN-level qualification including radiation hardness verification and extended temperature validation-making it the only option for mission-critical space and nuclear applications requiring guaranteed performance under worst-case environmental stress.
Availability
JANS1N4982CUS/TR is available at Aetrix Electronics and suitable for aerospace power bus protection, defense radar bias supply, and satellite payload voltage reference requiring stable component supply across extended temperature and radiation environments.
Supply support for JANS1N4982CUS/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 JANS1N4982CUS/TR belongs to Microsemi's military-qualified Zener diode product line, engineered specifically for fail-operational voltage regulation in safety-critical systems where parameter stability under radiation, thermal stress, and mechanical shock is non-negotiable.
FAQ
What is the Zener voltage tolerance of JANS1N4982CUS/TR?
The JANS1N4982CUS/TR has a nominal Zener voltage of 100 V with ±2% tolerance, denoted by the "C" suffix per Microsemi's standard coding. This tolerance is guaranteed over the full operating temperature range of –65 °C to +175 °C and applies at the specified test current of 12 mA. The JANS1N4982CUS/TR meets this specification under MIL-PRF-19500/356 screening requirements.
Is JANS1N4982CUS/TR radiation-hardened?
Yes, the JANS1N4982CUS/TR is inherently radiation-hardened per Microsemi MicroNote 050, validated for total ionizing dose (TID) up to 100 krad(Si) with no functional degradation or parameter shift. This radiation tolerance is intrinsic to its voidless-glass hermetic construction and Category I metallurgical bond, and is confirmed in the official JANS1N4982CUS/TR qualification report.
What is the maximum continuous Zener current for JANS1N4982CUS/TR?
The maximum continuous Zener current (IZM) for JANS1N4982CUS/TR is 475 mA, calculated from its 5 W power rating and 100 V Zener voltage (P = V × I). This value assumes operation at TEC = 140 °C; above that temperature, linear derating applies down to zero at +175 °C, as defined in the JANS1N4982CUS/TR absolute maximum ratings table.
Does JANS1N4982CUS/TR require special ESD handling?
No, the JANS1N4982CUS/TR is nonsensitive to electrostatic discharge and qualified per MIL-STD-750 Method 1020. Standard industry ESD handling practices are sufficient-no additional precautions such as grounded wrist straps or conductive foam are mandated for the JANS1N4982CUS/TR during assembly or test.
What package outline does JANS1N4982CUS/TR use?
The JANS1N4982CUS/TR uses the "E" package (also identified as "D-5B"), a surface-mount hermetic glass case with tungsten slugs and copper end caps finished with Sn/Pb. Its dimensions and pad layout conform to Microsemi's SD44A specification, and it is supplied in EIA-481-B compliant tape-and-reel format for automated placement.
JANS1N4982CUS/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
JANS1N4982CUS/TR FAQ
1.How can I place an order for JANS1N4982CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4982CUS/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 JANS1N4982CUS/TR reliable?
The price and inventory of JANS1N4982CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4982CUS/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4982CUS/TR?
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4.How is shipping managed for JANS1N4982CUS/TR?
JANS1N4982CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4982CUS/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 JANS1N4982CUS/TR?
For technical support, including JANS1N4982CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4982CUS/TR requirements.
6.How does Aetrix verify that JANS1N4982CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4982CUS/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 JANS1N4982CUS/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4982CUS/TR?
All JANS1N4982CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4982CUS/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 JANS1N4982CUS/TR part is unused and in its original packaging.
Return procedure for JANS1N4982CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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