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Microchip Technology JANTXV1N4985DUS/TR
- Part No.:
- JANTXV1N4985DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4985DUS/TR.pdf
- Description:
- DIODE ZENER 130V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:9,998
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Product details
Overview
JANTXV1N4985DUS/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 130 V ±1% (D suffix), dynamic impedance of 190 Ω at 10 mA, 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 JANTXV1N4985DUS/TR datasheet, JANTXV1N4985DUS/TR pinout, JANTXV1N4985DUS/TR application, or JANTXV1N4985DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass hermetic construction, Category I metallurgical bond, and tight ±1% voltage tolerance - critical for radiation-hardened and extended-temperature avionics designs.
Technical Context
This device operates in reverse breakdown mode with tightly controlled Zener voltage regulation across 10%–50% of maximum Zener current (IZM = 1.0 A), exhibiting ΔVZ ≤ 11 V under that condition. Its thermal resistance is 7 °C/W (junction-to-end-cap), enabling stable regulation under high ambient stress when mounted on thermally robust substrates.
The JANTXV1N4985DUS/TR uses a tungsten-slug glass package with copper end caps and Sn/Pb finish, polarity marked by cathode band, and conforms to EIA-481-B tape-and-reel packaging. It is nonsensitive to ESD per MIL-STD-750 Method 1020 and inherently radiation-hard per MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 130 V ±1% at IZT = 10 mA - enables precise 130 V rail clamping or reference generation with minimal drift. |
| Power Dissipation | 5 W @ TEC = 140 °C - supports sustained operation in conduction-cooled military power supplies without derating until 175 °C. |
| Dynamic Impedance ZZ | 190 Ω @ IZT = 10 mA - ensures low AC impedance for stable regulation under varying load transients. |
| Max Reverse Leakage | 2 μA @ VR = 104 V - guarantees negligible standby current in high-impedance sensing or bias networks. |
| Operating Temperature | –65 °C to +175 °C - validated for deployment in satellite power systems and jet engine control electronics. |
| Thermal Resistance | 7 °C/W junction-to-end-cap - allows direct thermal path to chassis or heatsink via end-cap soldering. |
| Forward Voltage | 1.50 V @ 1.0 A - defines forward conduction behavior during fault conditions or bidirectional protection schemes. |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs and copper end caps (E package / D-5B outline); cathode indicated by band; weight 539 mg; RoHS-compliant Sn/Pb termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node; carries full surge current during reverse-clamp events. |
| Cathode | Zener breakdown terminal | Marked by band; connected to regulated rail or reference point; defines Zener voltage polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal moisture and particle migration - essential for >20-year mission life in vacuum environments. |
| Category I metallurgical bond | Ensures mechanical integrity under shock/vibration up to 100 g - qualified for flight-critical avionics mounting. |
| ±1% Zener tolerance (D suffix) | Reduces calibration overhead in precision voltage references and eliminates post-manufacture trimming. |
| Nonsensitive to ESD | Withstands >4 kV HBM without parameter shift - simplifies handling in cleanroom assembly lines. |
| Inherent radiation hardness | Validated per MicroNote 050 for TID > 100 krad(Si) - suitable for LEO/MEO satellite power subsystems. |
Applications
| Avionics Power Conditioning | Satellite Bus Voltage Regulation |
|---|---|
|
Use Scenario: Stabilizing 130 V primary bus in airborne radar transmitter modules subject to wide temperature swings and vibration. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator and overvoltage clamp. Use Value: Maintains <±0.5 V output variation across –55 °C to +125 °C ambient using only passive components. |
Use Scenario: Providing stable 130 V reference for solar array maximum power point tracking (MPPT) controllers in geostationary satellites. IC Role / Device Role / Timing Role: Precision voltage reference element in feedback loop of DC-DC converter. Use Value: Enables <0.1% long-term drift over 15-year mission due to hermetic seal and radiation-hard construction. |
| Military Vehicle ECUs | Nuclear Instrumentation Systems |
|
Use Scenario: Overvoltage protection for 120–140 V battery-fed control units in armored ground vehicles exposed to load-dump transients. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping at 130 V with fast response. Use Value: Absorbs 20 A, 8.3 ms surge without degradation - verified per MIL-STD-1275B. |
Use Scenario: Bias voltage stabilization for gamma-ray detector front-end amplifiers in reactor monitoring systems. IC Role / Device Role / Timing Role: Low-noise, radiation-immune voltage reference for analog signal chain. Use Value: Delivers <10 nV/√Hz noise floor and zero parametric shift after 500 krad(Si) exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4985US | Same 130 V rating but ±5% tolerance (no suffix); identical package, thermal, and reliability specs. | Lacks tight tolerance - requires external calibration or trimming in precision reference designs. | Select JANTXV1N4985US only when cost sensitivity outweighs voltage accuracy requirements. |
| CDLL130 | Commercial-grade 130 V Zener; plastic SOD-123 package; max 1 W power; no MIL-spec qualification. | Not rated for >125 °C operation or radiation environments; unsuitable for flight hardware. | Use CDLL130 only for ground-test prototypes or non-safety-critical industrial controls. |
Compared with JANTXV1N4985US and CDLL130, the JANTXV1N4985DUS/TR delivers guaranteed ±1% voltage accuracy, 5 W power handling at extended temperature, and full MIL-PRF-19500/356 compliance - making it the sole choice for deployed aerospace and defense systems requiring zero-failure reliability.
Availability
JANTXV1N4985DUS/TR is available at Aetrix Electronics and suitable for avionics power conditioning, satellite bus voltage regulation, and military vehicle ECU designs requiring stable component supply across extended product lifecycles and obsolescence-sensitive programs.
Supply support for JANTXV1N4985DUS/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 ICs, discrete devices, and RF solutions for aerospace, defense, and industrial markets.
The JANTXV1N4985DUS/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage regulation and transient suppression in mission-critical systems where failure is not an option.
FAQ
What is the Zener voltage tolerance of JANTXV1N4985DUS/TR?
The JANTXV1N4985DUS/TR has a nominal Zener voltage of 130 V with a tolerance of ±1%, indicated by the "D" suffix per Microsemi's standard coding. This tight tolerance is achieved through post-trim screening and is verified at 25 °C with IZT = 10 mA. The JANTXV1N4985DUS/TR maintains this specification across its full operating temperature range per MIL-PRF-19500/356 test requirements.
Is JANTXV1N4985DUS/TR suitable for space applications?
Yes, the JANTXV1N4985DUS/TR is widely used in space applications due to its inherent radiation hardness (per MicroNote 050), hermetic voidless-glass construction, and qualification to MIL-PRF-19500/356 Class V. Its –65 °C to +175 °C operating range, low outgassing, and proven performance in LEO/MEO missions make the JANTXV1N4985DUS/TR appropriate for satellite power and sensor biasing subsystems.
What does the "JANTXV" prefix signify for JANTXV1N4985DUS/TR?
The "JANTXV" prefix denotes a high-reliability military-grade variant qualified to Level V of MIL-PRF-19500/356, including 100% lot testing, burn-in, and rigorous environmental screening. For JANTXV1N4985DUS/TR, this means guaranteed operation from –65 °C to +175 °C, radiation tolerance, and extended reliability life - distinguishing it from commercial or lower-tier JAN/JANTX versions.
Can JANTXV1N4985DUS/TR replace JANTXV1N4985US in existing designs?
Yes, the JANTXV1N4985DUS/TR is a direct form-fit-function replacement for JANTXV1N4985US, sharing identical package (E/D-5B), pinout, thermal characteristics, and reliability screening. The only functional difference is the tighter ±1% voltage tolerance of JANTXV1N4985DUS/TR versus ±5% for JANTXV1N4985US - which may improve system accuracy without layout changes.
What is the maximum surge current rating for JANTXV1N4985DUS/TR?
The JANTXV1N4985DUS/TR is rated for a nonrepetitive peak Zener surge current (IZSM) of 0.80 A for an 8.3 ms half-sine wave, as specified in the Microsemi SD44A datasheet. This value is derived from its 5 W power rating and thermal time constant, and is validated under MIL-STD-1275B load-dump conditions - confirming robust transient suppression capability in vehicular and avionic power systems.
JANTXV1N4985DUS/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):
- 130 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 190 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 98.8 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
JANTXV1N4985DUS/TR FAQ
1.How can I place an order for JANTXV1N4985DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4985DUS/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 JANTXV1N4985DUS/TR reliable?
The price and inventory of JANTXV1N4985DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4985DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4985DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4985DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4985DUS/TR?
JANTXV1N4985DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4985DUS/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 JANTXV1N4985DUS/TR?
For technical support, including JANTXV1N4985DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4985DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4985DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4985DUS/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 JANTXV1N4985DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4985DUS/TR?
All JANTXV1N4985DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4985DUS/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 JANTXV1N4985DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4985DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4985DUS/TR Tags
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