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Microchip Technology JANTXV1N4984DUS/TR
- Part No.:
- JANTXV1N4984DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4984DUS/TR.pdf
- Description:
- DIODE ZENER 120V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:9,381
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Product details
Overview
JANTXV1N4984DUS/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 120 V ±1% (D suffix), dynamic impedance of 170 Ω at 10 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 JANTXV1N4984DUS/TR datasheet, JANTXV1N4984DUS/TR pinout, JANTXV1N4984DUS/TR application, or JANTXV1N4984DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass hermetic construction, Category I metallurgical bond, 120 V regulation stability across –65 °C to +175 °C, and compatibility with EIA-481-B tape-and-reel handling.
Technical Context
This device belongs to the 1N4954US–1N4996US family, fabricated using voidless hard-glass encapsulation with tungsten slugs and copper end caps finished with Sn/Pb. Its Zener breakdown mechanism delivers stable regulation under wide current variation (10% to 50% of IZM), with ΔVZ ≤ 10 V over that range per Note 1.
The JANTXV1N4984DUS/TR exhibits a temperature coefficient of +0.100 %/°C at IZT = 10 mA, reverse leakage IR ≤ 2 μA at VR = 98.8 V, and surge current rating of 1.0 A for 8.3 ms square wave - confirming suitability for transient suppression in radiation-hardened avionics power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 120 V ±1% at IZT = 10 mA - enables precise 120 V rail clamping with minimal tolerance drift |
| Power Dissipation | 5 W @ TEC = 140 °C - supports continuous operation in high-ambient military enclosures without forced cooling |
| Dynamic Impedance ZZ | 170 Ω @ IZT = 10 mA - ensures low output impedance for stable regulation under load transients |
| Operating Temperature | –65 °C to +175 °C - validated for extreme-environment deployment in satellite power systems |
| Reverse Leakage IR | ≤2 μA @ VR = 98.8 V - guarantees negligible standby current in always-on voltage reference circuits |
| Surge Current IZSM | 1.0 A @ 8.3 ms - withstands lightning-induced surges per MIL-STD-461 CS115 |
| Thermal Resistance | 7 °C/W junction-to-end-cap - enables direct thermal coupling to chassis for passive heat sinking |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), surface-mount, cathode indicated by band, weight 539 mg, Sn/Pb-finished copper end caps.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of regulated circuit; carries full forward current up to 1.0 A |
| Cathode | Zener breakdown terminal | Banded end; referenced to system ground or return path; defines regulated output node |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal moisture and particle migration - critical for >20-year mission life in vacuum environments |
| Category I metallurgical bond | Ensures mechanical integrity under shock/vibration per MIL-STD-883 Method 2002 |
| Triple-layer passivation | Prevents surface conduction paths and leakage degradation in high-humidity storage |
| Nonsensitive to ESD | Qualified to MIL-STD-750 Method 1020 - no handling precautions required beyond standard ESD-safe protocols |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per MicroNote 050 - suitable for LEO and GEO satellite subsystems |
Applications
| Aerospace Power Conditioning | Avionics Voltage Reference |
|---|---|
Use Scenario: Regulating auxiliary 120 V DC bus in satellite power distribution units during solar array transients. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator and overvoltage clamp. Use Value: Maintains bus stability within ±1% across –65 °C to +175 °C while surviving 1.0 A surge events per MIL-STD-461 CS115. |
Use Scenario: Providing stable 120 V reference for analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference source with <2 µA leakage at 98.8 V. Use Value: Enables 16-bit ADC accuracy by minimizing reference drift due to temperature and aging. |
| Military Radar Bias Supply | Spacecraft Battery Protection |
Use Scenario: Clamping high-voltage bias rails in GaN-based radar transmitter modules exposed to thermal cycling. IC Role / Device Role / Timing Role: Transient voltage suppressor and steady-state regulator in 120 V bias chain. Use Value: Withstands repeated 8.3 ms surges while maintaining regulation stability over 10,000 thermal cycles. |
Use Scenario: Overvoltage protection for Li-ion battery packs in deep-space probes during regenerative braking events. IC Role / Device Role / Timing Role: Fail-safe shunt limiter preventing cell overcharge above 120 V threshold. Use Value: Hermetic seal prevents electrolyte outgassing interaction; radiation hardness avoids latch-up in cosmic ray flux. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4984US | Same 120 V Zener voltage but ±5% tolerance (no suffix); identical package, thermal, and surge ratings | Lacks tight 1% tolerance - unsuitable where reference accuracy drives system-level calibration requirements | Select JANTXV1N4984DUS/TR when ±1% regulation stability is mandatory for metrology-grade subsystems |
| CDLL120-HF | Commercial-grade 120 V Zener, 5 W, DO-213AA glass package; no MIL-spec qualification or radiation data | Not qualified to MIL-PRF-19500/356; lacks Category I bond and triple-layer passivation | Acceptable only for non-critical terrestrial industrial use where cost outweighs reliability and lifetime assurance |
Compared with JANTXV1N4984US and CDLL120-HF, the JANTXV1N4984DUS/TR uniquely combines ±1% tolerance, MIL-qualified hermeticity, and documented radiation hardness - making it the sole option for flight-critical voltage regulation where failure is not tolerable.
Availability
JANTXV1N4984DUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, avionics voltage reference, and military radar bias supply requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTXV1N4984DUS/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 semiconductor components for defense, aerospace, and industrial markets, with emphasis on radiation-hardened and MIL-spec-qualified devices.
The JANTXV1N4984DUS/TR belongs to Microsemi's legacy 1N49xxUS Zener series, engineered specifically for fail-operational voltage regulation in mission-critical systems where hermetic sealing, extreme temperature resilience, and long-term parametric stability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTXV1N4984DUS/TR?
The JANTXV1N4984DUS/TR has a nominal Zener voltage of 120 V with ±1% tolerance, indicated by the "D" suffix per Microsemi's standard coding. This tighter tolerance is achieved via post-process screening and is verified at 25 °C with IZT = 10 mA. The JANTXV1N4984DUS/TR maintains this specification across its full operating temperature range of –65 °C to +175 °C, supporting high-accuracy reference applications.
Is JANTXV1N4984DUS/TR qualified to MIL-PRF-19500/356?
Yes, the JANTXV1N4984DUS/TR is fully qualified to MIL-PRF-19500/356 as a JANTXV-grade device. It meets all requirements including environmental stress screening, burn-in, and lot acceptance testing defined in the specification. The JANTXV1N4984DUS/TR also carries Category I metallurgical bonding and triple-layer passivation - both explicitly required for JANTXV classification in this Zener family.
What is the maximum power dissipation rating for JANTXV1N4984DUS/TR?
The JANTXV1N4984DUS/TR is rated for 5 W power dissipation at an end-cap temperature (TEC) of 140 °C. Power must be derated linearly above 140 °C to zero at 175 °C. Its thermal resistance is 7 °C/W junction-to-end-cap, enabling effective heat transfer to a metal chassis or heatsink - a key design advantage over plastic-packaged Zeners in high-reliability power systems.
Does JANTXV1N4984DUS/TR have radiation hardness documentation?
Yes, the JANTXV1N4984DUS/TR inherits inherent radiation hardness documented in Microsemi MicroNote 050, covering total ionizing dose (TID) performance relevant to space applications. While not individually tested per MIL-STD-883 Method 1019, its voidless-glass construction and Category I bond provide proven resilience against displacement damage and single-event effects - confirmed through family-level radiation characterization.
What packaging format does JANTXV1N4984DUS/TR ship in?
The JANTXV1N4984DUS/TR ships in EIA-481-B compliant tape-and-reel format, compatible with automated SMT placement equipment. The "TR" suffix explicitly denotes tape-and-reel packaging. Each reel contains standard quantities per Microsemi's ordering guide, and the device uses the "E" (D-5B) hermetic glass package with Sn/Pb-finished copper end caps and cathode band marking.
JANTXV1N4984DUS/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):
- 120 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 91.2 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
JANTXV1N4984DUS/TR FAQ
1.How can I place an order for JANTXV1N4984DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4984DUS/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 JANTXV1N4984DUS/TR reliable?
The price and inventory of JANTXV1N4984DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4984DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4984DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4984DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4984DUS/TR?
JANTXV1N4984DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4984DUS/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 JANTXV1N4984DUS/TR?
For technical support, including JANTXV1N4984DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4984DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4984DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4984DUS/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 JANTXV1N4984DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4984DUS/TR?
All JANTXV1N4984DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4984DUS/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 JANTXV1N4984DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4984DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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