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Microchip Technology JANTXV1N4989CUS/TR
- Part No.:
- JANTXV1N4989CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4989CUS/TR.pdf
- Description:
- DIODE ZENER 200V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:9,039
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Product details
Overview
JANTXV1N4989CUS/TR from Microsemi is a military-grade, voidless-hermetically-sealed surface-mount Zener diode rated for 5 W power dissipation at 140 °C end-cap temperature. It provides precise 200 V nominal Zener voltage with ±1% tolerance (C suffix), 500 Ω dynamic impedance at 5 mA test current, and operates across –65 °C to +175 °C junction temperature range. It serves as a high-reliability voltage reference or overvoltage clamp in radiation-hardened aerospace power conditioning circuits.
For engineers reviewing the JANTXV1N4989CUS/TR datasheet, JANTXV1N4989CUS/TR pinout, JANTXV1N4989CUS/TR application, or JANTXV1N4989CUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, hermetic glass package, 200 V regulation stability under wide current/temperature variation, and compatibility with tape-and-reel automated assembly.
Technical Context
This device belongs to the 1N4954US–1N4996US family of surface-mount Zener regulators, featuring voidless hard-glass construction with tungsten slugs and copper end caps with Sn/Pb finish. Its Category I internal metallurgical bond ensures mechanical robustness and long-term parameter stability under thermal cycling and mechanical shock.
It delivers regulated 200 V output with ΔVZ ≤ 18 V between 10% and 50% of IZM (IZM = 1.0 A), exhibits 2 μA maximum reverse leakage at VR = 152 V, and maintains a temperature coefficient of +0.110 %/°C - enabling predictable drift compensation in precision analog references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 200 V ±1% at IZT = 5 mA - enables accurate 200 V reference generation with tight tolerance for mission-critical biasing. |
| Power Dissipation | 5 W @ TEC = 140 °C - supports sustained operation in high-temperature avionics enclosures without derating below full rating. |
| Dynamic Impedance ZZT | 500 Ω @ IZT = 5 mA - ensures stable regulation under moderate load transients in feedback-sensing applications. |
| Max Reverse Leakage IR | 2 μA @ VR = 152 V - minimizes standby current loss in high-impedance sensing nodes. |
| Temp Coefficient αVZ | +0.110 %/°C @ IZT - allows predictable voltage drift modeling for temperature-compensated designs. |
| Surge Current IZSM | 1.8 A @ 8.3 ms - withstands transient overvoltage events such as lightning-induced surges in power bus protection. |
| Junction Temp Range | –65 °C to +175 °C - certified for use in extreme-environment satellite power systems and downhole drilling electronics. |
Pinout & Package
Package: Hermetically sealed voidless hard-glass "E" package (also designated D-5B), with copper end caps and Sn/Pb termination finish. Cathode indicated 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 circuit ground or lower-potential node during Zener operation; carries full surge current during clamping. |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 200 V reference when reverse-biased; marked by visible band; interfaces directly with error amplifier inputs or voltage monitor ICs. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal delamination risk-critical for >20-year field life in space-grade power supplies. |
| Category I metallurgical bond | Ensures mechanical integrity under 100 g shock and 20 g vibration-validated per MIL-STD-883 Method 2002. |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020-enables handling without special grounding protocols. |
| Radiation hardness | Qualified to 100 krad(Si) total ionizing dose per MicroNote 050-suitable for low-earth orbit satellite subsystems. |
| MIL-PRF-19500/356 Class V | Meets JANTXV screening including burn-in, temperature cycling, and lot acceptance testing-required for DoD procurement. |
Applications
| Aerospace Power Bus Protection | Satellite Voltage Reference |
|---|---|
Use Scenario: Clamping transient spikes on 200 V primary power bus in LEO satellite power distribution units. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as shunt overvoltage protector. Use Value: Absorbs 1.8 A surge current for 8.3 ms without degradation, preserving downstream DC-DC converters and FPGAs. |
Use Scenario: Providing stable 200 V bias for high-voltage op-amp input stages in star tracker sensor signal conditioning. IC Role / Device Role / Timing Role: Precision voltage reference element in analog front-end calibration circuitry. Use Value: ±1% tolerance and +0.110 %/°C TC enable <±0.5% total error over –40 °C to +85 °C operational range. |
| Downhole Drilling Instrumentation | Military Radar Bias Supply |
Use Scenario: Regulating gate drive voltage for SiC MOSFETs in high-temperature (>150 °C) wellbore telemetry transmitters. IC Role / Device Role / Timing Role: High-temperature-stable Zener regulator maintaining fixed bias point under thermal stress. Use Value: Full 5 W rating retained up to 140 °C end-cap temperature, eliminating need for external heatsinking in confined housings. |
Use Scenario: Stabilizing supply rails for GaN MMIC driver stages in airborne active electronically scanned array (AESA) radar modules. IC Role / Device Role / Timing Role: Low-noise voltage reference supporting RF power amplifier bias control loop. Use Value: 500 Ω dynamic impedance ensures minimal AC ripple coupling into sensitive RF bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4989CUS | Same electrical specs and hermetic construction, but supplied in bulk (not tape-and-reel); no TR suffix. | Requires manual placement or non-automated assembly; unsuitable for SMT pick-and-place lines. | Select JANTXV1N4989CUS/TR when automated high-volume production with EIA-481-B compliance is required. |
| 1N4989US | Commercial-grade version: same 200 V/5 W specs but only JAN-qualified (not JANTXV); lacks extended screening and radiation data. | Not approved for Class V space or nuclear-hardened programs; limited to non-mission-critical industrial use. | Choose 1N4989US only for cost-sensitive terrestrial applications where MIL-PRF-19500/356 compliance is unnecessary. |
Compared with JANTXV1N4989CUS/TR, JANTXV1N4989CUS requires manual handling and lacks reel packaging logistics, while 1N4989US omits radiation hardness validation and extended environmental screening-making JANTXV1N4989CUS/TR the sole option for flight-qualified 200 V Zener regulation in harsh environments.
Availability
JANTXV1N4989CUS/TR is available at Aetrix Electronics and suitable for aerospace power bus protection, satellite voltage reference, and downhole instrumentation requiring stable component supply with guaranteed traceability and long-term obsolescence management.
Supply support for JANTXV1N4989CUS/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 defense, aerospace, and industrial markets.
The JANTXV1N4989CUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356 Zener diode product line, 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 for JANTXV1N4989CUS/TR?
JANTXV1N4989CUS/TR has a nominal Zener voltage of 200 V with ±1% tolerance, denoted by the "C" suffix in the part number. This tight tolerance is achieved through post-trim screening and is verified per MIL-PRF-19500/356 Class V requirements. The JANTXV1N4989CUS/TR maintains this specification across its full operating temperature range and lifetime.
Is JANTXV1N4989CUS/TR compatible with lead-free reflow processes?
No-JANTXV1N4989CUS/TR features Sn/Pb (tin/lead) terminations and is not qualified for lead-free reflow. Its end caps are specified with Sn/Pb finish per the datasheet, and exposure to peak temperatures >220 °C (typical for Pb-free profiles) risks solder joint integrity and hermetic seal reliability. JANTXV1N4989CUS/TR must be assembled using eutectic Sn63/Pb37-compatible thermal profiles.
What is the maximum continuous Zener current for JANTXV1N4989CUS/TR?
The maximum continuous Zener current (IZM) for JANTXV1N4989CUS/TR is 1.0 A at TEC = 140 °C, corresponding to its 5 W power rating. This value is derived from P = VZ × IZM = 200 V × 1.0 A. Derating is linear above 140 °C, reaching zero at 175 °C junction temperature, as defined in the absolute maximum ratings table.
Does JANTXV1N4989CUS/TR have radiation hardness documentation?
Yes-JANTXV1N4989CUS/TR is documented as inherently radiation hard per Microsemi MicroNote 050, with total ionizing dose (TID) tolerance validated to 100 krad(Si). This applies to the entire 1N4954US–1N4996US family, including JANTXV1N4989CUS/TR, and supports deployment in low-earth orbit and nuclear instrumentation environments.
How is polarity identified on JANTXV1N4989CUS/TR?
JANTXV1N4989CUS/TR uses a cathode band for polarity identification, consistent with industry-standard diode marking. The band marks the cathode terminal, which must be connected to the higher-potential node when used in Zener regulation mode. No part number or date code marking is present on the device body per the datasheet.
JANTXV1N4989CUS/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):
- 200 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 500 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 152 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
JANTXV1N4989CUS/TR FAQ
1.How can I place an order for JANTXV1N4989CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4989CUS/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 JANTXV1N4989CUS/TR reliable?
The price and inventory of JANTXV1N4989CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4989CUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4989CUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4989CUS/TR transactions.
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4.How is shipping managed for JANTXV1N4989CUS/TR?
JANTXV1N4989CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4989CUS/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 JANTXV1N4989CUS/TR?
For technical support, including JANTXV1N4989CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4989CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4989CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4989CUS/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 JANTXV1N4989CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4989CUS/TR?
All JANTXV1N4989CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4989CUS/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 JANTXV1N4989CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4989CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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