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Microchip Technology JANTXV1N4963CUS/TR
- Part No.:
- JANTXV1N4963CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4963CUS/TR.pdf
- Description:
- DIODE ZENER 16V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:8,450
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Product details
Overview
JANTXV1N4963CUS/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 16 V ±2% (C-suffix), dynamic impedance of 3.5 Ω at 75 mA test current, and operating junction temperature range from –65 °C to +175 °C. It serves as a precision voltage reference and regulation element in high-reliability power supply rails, analog sensor biasing, and overvoltage protection circuits for aerospace and defense systems.
For engineers reviewing the JANTXV1N4963CUS/TR datasheet, JANTXV1N4963CUS/TR pinout, JANTXV1N4963CUS/TR application, or JANTXV1N4963CUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass hermetic package, Category I metallurgical bond, –65 °C to +175 °C operation, and 16 V ±2% Zener tolerance - all critical for radiation-tolerant, long-life, mission-critical designs.
Technical Context
This device belongs to the JANTXV-qualified 1N49xxUS series, designed for high-stability voltage regulation under extreme thermal and radiation environments. Its voidless-glass hermetic construction eliminates internal voids that cause parametric drift or failure under thermal cycling or vacuum exposure.
The Zener operates with a specified test current of 75 mA, exhibits 3.5 Ω dynamic impedance at that point, and maintains regulation across 10–50% of maximum Zener current (IZM = 10 mA to 50 mA), with voltage change ΔVZ ≤ 1.0 V. Its forward voltage is 1.50 V at 1.0 A, and reverse leakage is limited to 5 μA at 12.2 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V ±2% at IZT = 75 mA - enables precise 16 V rail stabilization with tight tolerance for analog reference and feedback loops. |
| Power Dissipation | 5 W @ TEC = 140 °C - supports robust continuous regulation in high-temperature avionics enclosures without forced cooling. |
| Dynamic Impedance (ZZT) | 3.5 Ω @ IZT = 75 mA - ensures minimal output voltage variation under load transients in regulated supplies. |
| Operating Temperature | –65 °C to +175 °C - validated for use in space-grade electronics, turbine engine controllers, and downhole instrumentation. |
| Thermal Resistance (RθJC) | 7 °C/W junction-to-end-cap - allows accurate thermal modeling when mounted on copper pads or heat-spreading substrates. |
| Reverse Leakage (IR) | 5 μA max at VR = 12.2 V - guarantees low quiescent current draw in battery-backed or low-power monitoring circuits. |
| Surge Current (IZSM) | 10 A @ 8.3 ms square wave - provides transient overvoltage clamping capability during ESD or lightning-induced surges. |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with copper end caps finished in Sn/Pb, 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 | Connected to lower-potential side of circuit; used in forward-bias protection or clamp configurations. |
| Cathode | Zener breakdown terminal | Marked with band; connected to higher-potential side to enable reverse-bias regulation at 16 V. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass construction | Eliminates internal voids to prevent parametric shift or catastrophic failure under thermal cycling, vacuum, or humidity exposure. |
| Category I metallurgical bond | Ensures mechanical and electrical integrity of internal junction under shock, vibration, and radiation stress per MIL-PRF-19500/356. |
| Triple-layer passivation | Provides enhanced surface stability and leakage control in high-humidity or corrosive atmospheric conditions. |
| Nonsensitive to ESD | Qualified to MIL-STD-750 Method 1020 - no handling precautions required beyond standard static-safe protocols. |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050 - suitable for low-dose-rate TID environments without derating. |
Applications
| Aerospace Power Conditioning | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary 16 V supply rails in satellite power distribution units exposed to thermal vacuum and radiation. IC Role / Device Role / Timing Role: Zener diode providing stable 16 V reference for DC-DC converter feedback and voltage monitor comparators. Use Value: Maintains regulation within ±2% across –65 °C to +175 °C and survives 100 krad(Si) TID without parameter shift. |
Use Scenario: Biasing precision op-amps and ADC references in radar receiver front-ends deployed in airborne electronic warfare platforms. IC Role / Device Role / Timing Role: Low-noise, low-drift 16 V Zener reference source for analog signal chain calibration. Use Value: 3.5 Ω dynamic impedance and <5 μA leakage ensure sub-mV reference error under varying load and temperature. |
| Downhole Instrumentation | Turbine Engine Control |
Use Scenario: Providing fault-tolerant voltage clamping in high-temperature logging tools operating at 175 °C downhole. IC Role / Device Role / Timing Role: Overvoltage protection element shunting transients on sensor excitation lines. Use Value: 10 A surge rating at 8.3 ms and 5 W steady-state dissipation sustain reliability where active components fail. |
Use Scenario: Stabilizing 16 V bias for turbine temperature sensor signal conditioners in jet engine FADEC modules. IC Role / Device Role / Timing Role: Precision Zener regulator maintaining reference integrity during rapid thermal transients. Use Value: Voidless-glass hermetic seal prevents outgassing and parametric drift during repeated 0–175 °C thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4963DUS/TR | Same 16 V nominal voltage but ±1% tolerance (D-suffix); otherwise identical ratings and package. | Required where tighter regulation (±1%) is needed for metrology-grade references or high-resolution ADC biasing. | Select JANTXV1N4963DUS/TR only if system-level accuracy demands sub-20 mV total error budget at full temperature range. |
| JANTX1N4963CUS/TR | Same 16 V ±2% voltage and package, but qualified to JAN level (not JANTXV); lower radiation hardness and no inherent rad-hard validation. | Suitable for non-space, ground-based military systems where radiation tolerance is not mandated. | Choose JANTX1N4963CUS/TR for cost-sensitive programs with MIL-PRF-19500/356 compliance but no TID or ELDRS requirements. |
Compared with JANTXV1N4963CUS/TR, JANTXV1N4963DUS/TR offers improved voltage accuracy at identical thermal and surge performance, while JANTX1N4963CUS/TR reduces cost and qualification scope at the expense of radiation hardness and extended temperature validation.
Availability
JANTXV1N4963CUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference design, and downhole instrumentation requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTXV1N4963CUS/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, radiation-hardened, and military-qualified analog and mixed-signal components.
The JANTXV1N4963CUS/TR belongs to Microsemi's legacy 1N49xxUS Zener family, engineered specifically for mission-critical voltage regulation in aerospace, defense, and industrial systems demanding MIL-PRF-19500/356 compliance and extreme environmental resilience.
FAQ
What is the Zener voltage tolerance of JANTXV1N4963CUS/TR?
JANTXV1N4963CUS/TR has a nominal Zener voltage of 16 V with a tolerance of ±2%, denoted by the "C" suffix in the part number. This tolerance is guaranteed over the full operating temperature range of –65 °C to +175 °C and at the specified test current of 75 mA, as verified per MIL-PRF-19500/356 test requirements.
Is JANTXV1N4963CUS/TR suitable for space applications?
Yes, JANTXV1N4963CUS/TR is inherently radiation-hardened per Microsemi MicroNote 050 and qualified to MIL-PRF-19500/356 Class V (JANTXV), making it suitable for low-earth orbit and deep-space missions where total ionizing dose up to 100 krad(Si) is expected. Its voidless-glass hermetic package further ensures reliability in vacuum environments.
What is the maximum continuous Zener current for JANTXV1N4963CUS/TR?
The maximum continuous Zener current (IZM) for JANTXV1N4963CUS/TR is 10 mA at 140 °C end-cap temperature, corresponding to its 5 W power rating. Derating is linear above 140 °C, reaching zero dissipation at 175 °C. This value is confirmed in the Electrical Characteristics table on page 2 of SD44A.pdf.
Does JANTXV1N4963CUS/TR have a defined forward voltage specification?
Yes, JANTXV1N4963CUS/TR specifies a maximum forward voltage (VF) of 1.50 V at 1.0 A forward current. This parameter is relevant for applications using the device in forward-bias mode, such as polarity protection or crowbar circuits, and is consistent across the 1N4954US–1N4996US family.
What package outline does JANTXV1N4963CUS/TR use?
JANTXV1N4963CUS/TR uses the "E" package (also referenced as D-5B), a surface-mount hermetic glass package with tungsten slugs and copper end caps finished in Sn/Pb. The package dimensions and recommended pad layout are documented in the "PACKAGE DIMENSIONS AND PAD LAYOUT" section of SD44A.pdf.
JANTXV1N4963CUS/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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 12.2 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
JANTXV1N4963CUS/TR FAQ
1.How can I place an order for JANTXV1N4963CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4963CUS/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 JANTXV1N4963CUS/TR reliable?
The price and inventory of JANTXV1N4963CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4963CUS/TR is usually 5 days.
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Once your JANTXV1N4963CUS/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 JANTXV1N4963CUS/TR?
For technical support, including JANTXV1N4963CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4963CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4963CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4963CUS/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 JANTXV1N4963CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4963CUS/TR?
All JANTXV1N4963CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4963CUS/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 JANTXV1N4963CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4963CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4963CUS/TR Tags
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