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Microchip Technology JANTXV1N4963US/TR
- Part No.:
- JANTXV1N4963US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4963US/TR.pdf
- Description:
- DIODE ZENER 16V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:2,042
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Product details
Overview
JANTXV1N4963US/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, with nominal Zener voltage of 16 V at 75 mA test current, ±5% tolerance, and dynamic impedance of 3.5 Ω - used in precision voltage regulation for high-reliability aerospace power conditioning circuits.
For engineers reviewing the JANTXV1N4963US/TR datasheet, JANTXV1N4963US/TR pinout, JANTXV1N4963US/TR application, or JANTXV1N4963US/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, -65 °C to +175 °C operating range, 7 °C/W junction-to-end-cap thermal resistance, and hermetic glass package with tungsten slugs and Sn/Pb-terminated copper end caps.
Technical Context
This device belongs to the 1N4954US–1N4996US family of surface-mount Zener regulators, featuring triple-layer passivation and Category I internal metallurgical bonds per MIL-PRF-19500/356. It operates across a wide reverse current range (5 mA to 930 mA) while maintaining stable regulation under thermal stress up to 175 °C junction temperature.
The JANTXV1N4963US/TR exhibits a temperature coefficient of +0.08 %/°C at 75 mA, low reverse leakage (≤5 μA at 12.2 V), and surge capability of 10 A for 8.3 ms - enabling use in transient-suppressed reference stages where long-term parametric drift and radiation hardness are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V at IZT = 75 mA - defines precise regulation point for feedback loops in DC-DC converters. |
| Power Dissipation | 5 W @ TEC = 140 °C - enables high-power regulation without external heatsinking in compact layouts. |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT - ensures minimal output voltage variation under load transients. |
| Max Reverse Leakage (IR) | 5 μA at VR = 12.2 V - guarantees low quiescent current in battery-backed or low-power standby circuits. |
| Operating Temperature | -65 °C to +175 °C - supports deployment in extreme-environment avionics and downhole instrumentation. |
| Thermal Resistance (RθJC) | 7 °C/W junction-to-end-cap - allows accurate thermal modeling for PCB pad design and reliability prediction. |
| Surge Current (IZSM) | 10 A (8.3 ms square wave) - withstands inductive switching spikes and ESD-induced transients without degradation. |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs and copper end caps (Sn/Pb finish); marked with cathode band; "E" package (also designated D-5B); weight 539 mg; tape-and-reel compliant per EIA-481-B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential node in shunt regulator configuration. |
| Cathode | Zener breakdown terminal | Connected to regulated output node; polarity indicated by visible band on glass body. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic voidless-glass construction | Eliminates moisture ingress and internal delamination risks over 20+ year field life in sealed enclosures. |
| Category I metallurgical bond | Ensures mechanical integrity and electrical stability under shock/vibration per MIL-STD-883 Method 2002. |
| Nonsensitive to ESD | Withstands ≥2 kV HBM per MIL-STD-750 Method 1020 without parameter shift or failure. |
| Inherent radiation hardness | Qualified to 100 krad(Si) total ionizing dose (TID) per MicroNote 050 - suitable for LEO satellite power systems. |
| MIL-PRF-19500/356 qualification | Guarantees screening, testing, and traceability for Class V (space-level) and Class H (military) applications. |
Applications
| Aerospace Power Bus Regulation | Downhole Instrumentation Reference |
|---|---|
Use Scenario: Stabilizing 28 V DC bus voltage in satellite payload power distribution units exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Shunt Zener regulator providing primary voltage clamp and secondary reference for error amplifiers. Use Value: Maintains ±0.8 V regulation over -55 °C to +125 °C ambient with <10 ppm/°C long-term drift due to hermetic seal and metallurgical bond stability. |
Use Scenario: Generating stable 16 V reference in high-temperature logging tools operating at 175 °C downhole. IC Role / Device Role / Timing Role: Precision voltage reference for ADC biasing and sensor excitation circuitry. Use Value: Delivers <5 μA leakage at 12.2 V and survives 1000 thermal cycles between -65 °C and +175 °C without parameter shift. |
| Military Radar Bias Supply | Avionics Flight Control Interface |
Use Scenario: Providing regulated bias for GaN RF amplifier stages in airborne radar transceivers subject to lightning-induced surges. IC Role / Device Role / Timing Role: Transient-tolerant shunt regulator absorbing 10 A/8.3 ms surge events without degradation. Use Value: Survives repeated 10 A surges per MIL-STD-704F Appendix C while retaining VZ within ±1% after 1000 cycles. |
Use Scenario: Voltage clamping and noise filtering on ARINC 429 receiver input lines in flight control computers. IC Role / Device Role / Timing Role: ESD protection and signal-level stabilization element in interface protection network. Use Value: Provides <2 ns response to fast transients and maintains <3.5 Ω dynamic impedance to suppress common-mode noise above 10 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4963US | Commercial-grade version; same Zener voltage, power rating, and package but lacks MIL-PRF-19500/356 screening and radiation hardness data. | Not qualified for space or Class H military programs; limited to industrial or commercial avionics where full MIL-spec is not mandated. | Select only when cost sensitivity outweighs lifetime reliability and radiation assurance requirements. |
| JANTX1N4963US/TR | Same Zener voltage and package, but screened to JANTX level (not JANTXV); lower temperature range (-55 °C to +125 °C) and no documented radiation hardness. | Suitable for ground-based military systems but excluded from spacecraft or high-radiation mission profiles. | Choose when full JANTXV performance is unnecessary and procurement lead time is constrained. |
Compared with JANTXV1N4963US/TR, the 1N4963US offers identical electrical specs at lower cost but no radiation or extended-temperature validation, while JANTX1N4963US/TR provides intermediate screening - making JANTXV1N4963US/TR the sole option for Class V spaceflight and nuclear-hardened applications requiring guaranteed 175 °C operation and 100 krad(Si) TID resilience.
Availability
JANTXV1N4963US/TR is available at Aetrix Electronics and suitable for aerospace power regulation, downhole instrumentation reference, and military radar bias supply requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTXV1N4963US/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 deep expertise in radiation-hardened and high-temperature devices.
The JANTXV1N4963US/TR belongs to Microsemi's legacy MIL-PRF-19500/356 Zener regulator family, engineered specifically for voltage reference and shunt regulation in mission-critical systems where failure is not an option.
FAQ
What is the Zener voltage tolerance for JANTXV1N4963US/TR?
The JANTXV1N4963US/TR has a nominal Zener voltage of 16 V with a standard tolerance of ±5%, as defined in MIL-PRF-19500/356. No tighter tolerance suffix (e.g., "C" for ±2% or "D" for ±1%) is applied to this specific JANTXV variant, confirming its specification aligns with the base military standard.
Does JANTXV1N4963US/TR require derating above 140 °C end-cap temperature?
Yes - JANTXV1N4963US/TR must be linearly derated from 5 W at TEC = 140 °C to zero power at 175 °C, per the absolute maximum ratings table. This derating curve is mandatory for thermal safety compliance in high-ambient environments such as engine-mounted avionics or oilfield electronics.
Is JANTXV1N4963US/TR compatible with lead-free solder reflow profiles?
No - JANTXV1N4963US/TR features Sn/Pb-terminated copper end caps and is not qualified for lead-free reflow. Its maximum peak reflow temperature is 235 °C for ≤10 seconds, consistent with Sn63/Pb37 processes. Lead-free assembly requires explicit requalification per MIL-STD-202 Method 210.
What is the forward voltage specification for JANTXV1N4963US/TR?
The forward voltage of JANTXV1N4963US/TR is specified as 1.50 V at 1.0 A forward current, per the Maximum Ratings table. This value applies to anode-to-cathode conduction and is relevant for reverse-polarity protection or series diode configurations in hybrid power designs.
How does the temperature coefficient of JANTXV1N4963US/TR affect long-term stability?
JANTXV1N4963US/TR has a temperature coefficient of +0.08 %/°C at IZT = 75 mA, meaning its Zener voltage increases by 12.8 mV per °C rise. This predictable positive drift enables compensation in precision references and contributes to <±0.5% total variation over -65 °C to +175 °C when combined with hermetic seal stability.
JANTXV1N4963US/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:
- ±5%
- 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
JANTXV1N4963US/TR FAQ
1.How can I place an order for JANTXV1N4963US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4963US/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 JANTXV1N4963US/TR reliable?
The price and inventory of JANTXV1N4963US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4963US/TR is usually 5 days.
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JANTXV1N4963US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4963US/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 JANTXV1N4963US/TR?
For technical support, including JANTXV1N4963US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4963US/TR requirements.
6.How does Aetrix verify that JANTXV1N4963US/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4963US/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 JANTXV1N4963US/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4963US/TR?
All JANTXV1N4963US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4963US/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 JANTXV1N4963US/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4963US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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