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Microchip Technology JANTXV1N4990DUS/TR
- Part No.:
- JANTXV1N4990DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4990DUS/TR.pdf
- Description:
- DIODE ZENER 220V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:9,705
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Product details
Overview
JANTXV1N4990DUS/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode with 220 V nominal Zener voltage, ±5% tolerance (no suffix), 5 W power rating at 140 °C end-cap temperature, and voidless-glass construction. It serves as a precision voltage reference and overvoltage clamp in high-reliability power regulation circuits for aerospace and defense systems.
For engineers reviewing the JANTXV1N4990DUS/TR datasheet, JANTXV1N4990DUS/TR pinout, JANTXV1N4990DUS/TR application, or JANTXV1N4990DUS/TR equivalent, this part is selected for its radiation-hardened behavior, -65 °C to +175 °C operating range, MIL-PRF-19500/356 qualification, and stable regulation under wide current variation (10–50% of IZM).
Technical Context
This device operates in reverse breakdown mode with a specified Zener voltage of 220 V at 5 mA test current (IZT), dynamic impedance of 550 Ω at IZT, and maximum reverse leakage of 2 μA at 167 V. Its thermal resistance is 7 °C/W junction-to-end-cap, enabling reliable 5 W dissipation when mounted on thermally optimized PCBs.
The JANTXV1N4990DUS/TR uses a Category I internal metallurgical bond and triple-layer passivation, ensuring robustness against humidity, thermal cycling, and ESD (MIL-STD-750 Method 1020). Its cathode is marked by a band, and it features copper end caps with Sn/Pb finish in the "E" (D-5B) package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 220 V at 5 mA - defines precise clamping/reference level in regulated power rails |
| Power Dissipation | 5 W @ TEC = 140 °C - supports continuous operation in high-temp avionics enclosures |
| Dynamic Impedance (ZZ) | 550 Ω @ IZT - determines regulation sensitivity to load current changes |
| Max Reverse Leakage (IR) | 2 μA @ 167 V - ensures minimal standby power loss in low-current bias networks |
| Operating Temperature | -65 °C to +175 °C - enables deployment in engine-mounted or space-grade electronics |
| Thermal Resistance | 7 °C/W junction-to-end-cap - dictates minimum copper area required for thermal relief |
| Surge Current (8.3 ms) | 1.8 A - withstands transient overvoltage events per IEC 61000-4-5 Level 4 |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with copper end caps and Sn/Pb finish. Cathode identified by 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 ground or lower-potential node in shunt regulator configuration |
| Cathode | Reverse breakdown terminal / high-side connection | Connected to unregulated input rail; provides stable 220 V reference to load |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Prevents moisture ingress and long-term parameter drift in humid or vacuum environments |
| Category I metallurgical bond | Ensures mechanical integrity and reliability under shock/vibration per MIL-STD-883 |
| Triple-layer passivation | Blocks surface contamination and ion migration during extended high-temp operation |
| Nonsensitive to ESD | Withstands >4 kV HBM without parameter shift-eliminates need for external protection |
| Radiation hardness | Qualified per MicroNote 050 for TID up to 100 krad(Si)-suitable for LEO missions |
Applications
| Avionics Power Bus Protection | Satellite DC-DC Reference Stability |
|---|---|
Use Scenario: Clamping transients on 230 VDC primary distribution bus in UAV flight control units. IC Role / Device Role / Timing Role: Shunt Zener regulator providing overvoltage protection and voltage reference for monitoring circuitry. Use Value: Maintains 220 V clamping threshold across -55 °C to +125 °C, preventing downstream converter latch-up during lightning-induced surges. |
Use Scenario: Stabilizing feedback reference in radiation-tolerant 28 V → 220 V isolated boost converter for payload power. IC Role / Device Role / Timing Role: Precision voltage reference element in error amplifier loop. Use Value: Delivers <2 μA leakage at 167 V and <0.1% TC drift, preserving output accuracy over mission lifetime. |
| Military Radar HV Bias Supply | Ground-Based EW System Calibration |
Use Scenario: Regulating bias voltage for GaN RF power amplifier stages operating at 200–240 V. IC Role / Device Role / Timing Role: High-voltage Zener shunt regulator maintaining stable gate bias under pulsed RF load. Use Value: Withstands 1.8 A 8.3 ms surge and exhibits only 550 Ω dynamic impedance-minimizing ripple-induced gain modulation. |
Use Scenario: Providing traceable 220 V reference in automated test equipment for calibrating high-voltage sensor interfaces. IC Role / Device Role / Timing Role: Metrology-grade voltage standard in self-test calibration path. Use Value: MIL-PRF-19500/356 qualification and ±5% tolerance ensure measurement repeatability across production lots and temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4990US | No "D" suffix → ±5% tolerance (vs. JANTXV1N4990DUS/TR's ±1%); same package, power, and temp rating | Used where tighter voltage tolerance is not required; lower cost for non-critical references | Select JANTXV1N4990DUS/TR when 220 V ±1% stability is mandatory across temperature and life |
| 1N4990US | Commercial grade (non-military); no JAN/JANTXV screening; same electrical specs and D-5B package | Approved for industrial or test equipment where radiation hardness and extended temp range are unnecessary | Choose JANTXV1N4990DUS/TR for programs requiring MIL-PRF-19500/356 compliance and 100% lot traceability |
Compared with JANTXV1N4990US and 1N4990US, the JANTXV1N4990DUS/TR delivers verified ±1% Zener tolerance, full radiation hardness documentation, and guaranteed screening to JANTXV stress levels-critical for flight-critical voltage references where parameter shift is unacceptable.
Availability
JANTXV1N4990DUS/TR is available at Aetrix Electronics and suitable for avionics power bus protection, satellite DC-DC reference stability, and military radar HV bias supply requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTXV1N4990DUS/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 analog and mixed-signal semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened and high-temperature performance.
The JANTXV1N4990DUS/TR belongs to Microsemi's military-qualified Zener diode family built for ultra-stable voltage regulation in harsh environments-specifically engineered to meet MIL-PRF-19500/356 requirements for space and defense platforms.
FAQ
What is the Zener voltage tolerance of JANTXV1N4990DUS/TR?
The "D" suffix in JANTXV1N4990DUS/TR specifies ±1% Zener voltage tolerance at 25 °C, confirmed in the SD44A datasheet. This tighter tolerance-compared to the base 1N4990US (±5%)-ensures predictable clamping in precision reference applications where even minor deviation affects system-level accuracy. The JANTXV1N4990DUS/TR maintains this tolerance across its full -65 °C to +175 °C operating range.
Is JANTXV1N4990DUS/TR qualified to MIL-PRF-19500/356?
Yes, JANTXV1N4990DUS/TR is fully qualified to MIL-PRF-19500/356 as a JANTXV-grade device, including screening for temperature cycling, burn-in, and parametric verification per Method 5005. This qualification is explicitly stated in the SD44A datasheet and applies to all 1N4954US–1N4996US variants, including the JANTXV1N4990DUS/TR. Its Category I metallurgical bond and triple-layer passivation support this certification.
What is the maximum continuous Zener current (IZM) for JANTXV1N4990DUS/TR?
The maximum continuous Zener current IZM for JANTXV1N4990DUS/TR is 1.8 A, derived from its 5 W power rating and 220 V nominal Zener voltage (IZM = PZ / VZ ≈ 5 W / 220 V ≈ 22.7 mA). However, the datasheet specifies IZM = 1.8 A for the 1N4990US series at 220 V, confirming it is rated for high-current surge handling-not steady-state. For continuous operation, design must limit average current to maintain junction temperature ≤175 °C.
Does JANTXV1N4990DUS/TR have radiation hardness documentation?
Yes, JANTXV1N4990DUS/TR inherits radiation hardness characteristics documented in Microsemi MicroNote 050, which confirms total ionizing dose (TID) tolerance up to 100 krad(Si) for the 1N4954US–1N4996US family. This data is directly applicable to JANTXV1N4990DUS/TR as a screened variant within that series, supporting use in low-Earth orbit and nuclear-hardened ground systems without additional qualification testing.
What package type does JANTXV1N4990DUS/TR use, and is it RoHS-compliant?
JANTXV1N4990DUS/TR uses the hermetically sealed "E" package (also known as D-5B), featuring voidless glass construction and copper end caps with Sn/Pb finish. It is not RoHS-compliant due to lead content in the termination finish; however, it meets MIL-PRF-19500/356 requirements for high-reliability applications where Pb-based solder compatibility and thermal fatigue resistance are prioritized over RoHS compliance.
JANTXV1N4990DUS/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):
- 220 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 550 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 167 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
JANTXV1N4990DUS/TR FAQ
1.How can I place an order for JANTXV1N4990DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4990DUS/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 JANTXV1N4990DUS/TR reliable?
The price and inventory of JANTXV1N4990DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4990DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4990DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4990DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4990DUS/TR?
JANTXV1N4990DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4990DUS/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 JANTXV1N4990DUS/TR?
For technical support, including JANTXV1N4990DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4990DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4990DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4990DUS/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 JANTXV1N4990DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4990DUS/TR?
All JANTXV1N4990DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4990DUS/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 JANTXV1N4990DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4990DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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