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Microchip Technology JANTXV1N4988DUS/TR
- Part No.:
- JANTXV1N4988DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4988DUS/TR.pdf
- Description:
- DIODE ZENER 180V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:4,425
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Product details
Overview
JANTXV1N4988DUS/TR from Microsemi is a surface-mount, hermetically sealed, voidless-glass 5 W Zener diode with nominal Zener voltage of 180 V, ±5% tolerance (no suffix), 5 mA test current, and 450 Ω dynamic impedance at IZT. It operates from –65 °C to +175 °C and is qualified to MIL-PRF-19500/356 for high-reliability power regulation in aerospace power supplies.
For engineers reviewing the JANTXV1N4988DUS/TR datasheet, JANTXV1N4988DUS/TR pinout, JANTXV1N4988DUS/TR application, or JANTXV1N4988DUS/TR equivalent, key selection criteria include its military-grade hermetic glass package, 180 V regulation stability across wide temperature and current ranges, radiation-hardened construction, and compatibility with high-temperature PCB assembly processes.
Technical Context
This device functions as a precision voltage reference and shunt regulator in high-reliability DC power conditioning circuits. Its voidless-glass hermetic seal and Category III internal metallurgical bond ensure long-term parameter stability under thermal cycling, humidity, and radiation exposure.
It delivers regulated 180 V output at 5 mA test current with 450 Ω dynamic impedance, 2 μA maximum reverse leakage at 144 V, and a temperature coefficient of +0.110 %/°C - enabling predictable drift compensation in analog monitoring and feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 180 V ±5% at 5 mA - defines stable regulation point for overvoltage clamping and reference generation |
| Power Dissipation | 5 W @ TEC = 125 °C - supports continuous operation in high-temp environments with linear derating to zero at 175 °C |
| Dynamic Impedance (ZZ) | 450 Ω at IZT = 5 mA - indicates moderate regulation stiffness suitable for low-precision reference and coarse clamping |
| Reverse Leakage (IR) | 2 μA max at VR = 144 V - ensures minimal standby current in high-impedance bias networks |
| Temperature Coefficient (αVZ) | +0.110 %/°C - enables predictable positive drift modeling for temperature-compensated designs |
| Max Continuous Current (IZM) | 600 mA - sets upper limit for sustained shunt regulation without thermal runaway |
| Surge Current (IZSM) | 2.2 A @ 8.3 ms - provides transient overvoltage absorption capability in pulse-prone systems |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs, "E" outline (also designated D-5B), surface-mount configuration. Terminations are copper end caps with Sn/Pb finish; cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in shunt regulation; carries full load current during forward bias |
| Cathode | Zener breakdown terminal | Connected to higher-potential node; establishes regulated voltage reference at cathode-to-anode potential |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal moisture and voids to prevent parametric shift and early failure in harsh environments |
| Category III metallurgical bond | Ensures mechanical integrity and thermal cycle reliability exceeding 1000 cycles between –65 °C and +175 °C |
| MIL-PRF-19500/356 qualification | Validates performance to military screening, testing, and traceability requirements for Class V (space-level) applications |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per MicroNote 050 - suitable for low-earth orbit electronics |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 without parameter degradation |
Applications
| Aerospace Power Bus Protection | Satellite Payload Voltage Reference |
|---|---|
Use Scenario: Clamping transient spikes on 100–200 V primary power buses in launch vehicle avionics. IC Role / Device Role / Timing Role: Shunt regulator providing fail-safe overvoltage protection via controlled Zener breakdown. Use Value: Prevents bus collapse during lightning-induced surges using 2.2 A 8.3 ms surge rating and hermetic stability across thermal vacuum cycles. | Use Scenario: Generating stable 180 V reference for ADC biasing and sensor excitation in LEO satellite payloads. IC Role / Device Role / Timing Role: Precision voltage reference element in high-impedance divider networks feeding analog front-ends. Use Value: Delivers <±0.5% long-term drift over mission life due to radiation-hardened voidless-glass construction and +0.110 %/°C TC predictability. |
| Downhole Oilfield Instrumentation | Military Radar High-Voltage Bias |
Use Scenario: Regulating bias voltage for piezoelectric transducers in >150 °C downhole logging tools. IC Role / Device Role / Timing Role: High-temperature shunt regulator maintaining stable excitation voltage despite ambient extremes. Use Value: Operates continuously from –65 °C to +175 °C with no parameter shift, validated by MIL-PRF-19500/356 thermal screening. | Use Scenario: Providing stable 180 V bias for RF power amplifier stages in airborne radar transmitters. IC Role / Device Role / Timing Role: Voltage clamp protecting amplifier gate drivers from switching-induced transients. Use Value: Survives repeated 2.2 A surge events while maintaining regulation accuracy - critical for mission-critical radar uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4988US | No TR suffix; bulk packaging instead of tape-and-reel; identical electrical specs and hermetic construction | Preferred for manual prototyping or low-volume hand-soldered assemblies where reel handling is unnecessary | Select JANTXV1N4988US when automated pick-and-place is not required and cost-per-unit optimization is prioritized |
| 1N4988US | Commercial-grade (non-military) version; lacks MIL-PRF-19500/356 screening, radiation hardness, and extended temperature validation | Suitable only for benign-environment industrial controls, not aerospace or defense systems | Choose 1N4988US only for non-critical commercial applications where cost sensitivity outweighs reliability requirements |
Compared with JANTXV1N4988US and 1N4988US, the JANTXV1N4988DUS/TR offers guaranteed tape-and-reel delivery for SMT production, full military screening, and radiation tolerance - making it the sole option for flight-critical or high-TA deployments requiring traceable, long-lifecycle components.
Availability
JANTXV1N4988DUS/TR is available at Aetrix Electronics and suitable for aerospace power bus protection, satellite payload voltage reference, and downhole instrumentation requiring stable component supply across extended temperature and radiation-exposed operating conditions.
Supply support for JANTXV1N4988DUS/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 radiation-hardened components.
The JANTXV1N4988DUS/TR belongs to Microsemi's military-qualified Zener diode family designed specifically for voltage regulation and transient suppression in aerospace, defense, and oilfield electronics where failure is not an option.
FAQ
What is the Zener voltage tolerance for JANTXV1N4988DUS/TR?
The JANTXV1N4988DUS/TR has a nominal Zener voltage of 180 V with a standard ±5% tolerance, as defined by MIL-PRF-19500/356 for the base part number without additional tolerance suffixes. This tolerance applies across the full operating temperature range of –65 °C to +175 °C and is verified during military screening.
Does JANTXV1N4988DUS/TR require derating above 125 °C?
Yes, JANTXV1N4988DUS/TR must be derated linearly above 125 °C ambient (TEC) to zero power at 175 °C. Its rated 5 W dissipation is valid only at TEC = 125 °C; at 150 °C, maximum allowable power drops to 2.5 W. This derating curve is specified in the SD44A datasheet and enforced during MIL-PRF-19500/356 thermal testing.
Is JANTXV1N4988DUS/TR compatible with lead-free reflow processes?
No - JANTXV1N4988DUS/TR features Sn/Pb terminations and is not qualified for lead-free reflow. Its maximum junction temperature rating of +175 °C and glass-seal integrity assume traditional eutectic solder profiles. Lead-free reflow exceeds its thermal stress limits and may compromise hermeticity or metallurgical bonds.
What does the "DUS/TR" suffix indicate in JANTXV1N4988DUS/TR?
The "DUS/TR" suffix in JANTXV1N4988DUS/TR specifies the "D-5B" (E) surface-mount package ("DUS") and tape-and-reel packaging ("TR"). The "JANTXV" prefix denotes highest military screening level (V = verified), and "1N4988" identifies the 180 V Zener variant within the MIL-PRF-19500/356-qualified family.
How is radiation hardness documented for JANTXV1N4988DUS/TR?
Radiation hardness for JANTXV1N4988DUS/TR is documented in Microsemi MicroNote 050, which confirms inherent total ionizing dose (TID) tolerance due to its voidless-glass hermetic construction and Category III metallurgical bond. No additional rad-hard screening is required - the property is intrinsic to the device physics and process.
JANTXV1N4988DUS/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):
- 180 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 450 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 136.8 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
JANTXV1N4988DUS/TR FAQ
1.How can I place an order for JANTXV1N4988DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4988DUS/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 JANTXV1N4988DUS/TR reliable?
The price and inventory of JANTXV1N4988DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4988DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4988DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4988DUS/TR transactions.
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4.How is shipping managed for JANTXV1N4988DUS/TR?
JANTXV1N4988DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4988DUS/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 JANTXV1N4988DUS/TR?
For technical support, including JANTXV1N4988DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4988DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4988DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4988DUS/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 JANTXV1N4988DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4988DUS/TR?
All JANTXV1N4988DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4988DUS/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 JANTXV1N4988DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4988DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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