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Microchip Technology JANS1N4963CUS/TR
- Part No.:
- JANS1N4963CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANS1N4963CUS/TR.pdf
- Description:
- DIODE ZENER 16V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:8,159
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Product details
Overview
JANS1N4963CUS/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode rated for 5 W power dissipation, with a nominal Zener voltage of 16 V at 75 mA test current, ±2% tolerance (C suffix), and operates from –65 °C to +175 °C - used in high-reliability voltage regulation for aerospace power conditioning, radiation-hardened instrumentation, and avionics reference circuits.
For engineers reviewing the JANS1N4963CUS/TR datasheet, JANS1N4963CUS/TR pinout, JANS1N4963CUS/TR application, or JANS1N4963CUS/TR equivalent, this part is selected for extreme-temperature stability, low dynamic impedance (3.5 Ω at 75 mA), voidless-glass hermetic sealing per MIL-PRF-19500/356, and ESD immunity per MIL-STD-750 Method 1020.
Technical Context
This device functions as a precision shunt voltage regulator in high-stress analog signal chains and power supply feedback paths. Its Category I metallurgical bond and triple-layer passivation ensure stable Zener voltage under thermal cycling, ionizing radiation, and mechanical shock.
The JANS1N4963CUS/TR delivers 16 V regulation with 0.08 %/°C temperature coefficient and maintains ≤3.5 Ω dynamic impedance across 10–50% of IZM (10–500 mA), enabling tight output control in unregulated DC-DC converter references and sensor excitation supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V ±2% at 75 mA - ensures precise reference accuracy in closed-loop feedback without external trimming. |
| Power Dissipation | 5 W @ TEC = 140 °C - supports continuous operation in conduction-cooled avionics enclosures with minimal heatsinking. |
| Dynamic Impedance (ZZ) | 3.5 Ω at IZT = 75 mA - minimizes output voltage variation under load transients in precision bias networks. |
| Max Reverse Leakage (IR) | 5 μA @ VR = 12.2 V - guarantees negligible error current in high-impedance reference dividers. |
| Temp Coefficient (αVZ) | +0.08 %/°C - enables predictable drift compensation in wide-temperature-range instrumentation. |
| Surge Current (IZSM) | 10 A @ 8.3 ms - withstands lightning-induced transients in aircraft power bus protection stages. |
| Forward Voltage (VF) | 1.5 V @ 1.0 A - allows safe forward-bias testing and polarity verification without damaging the junction. |
Pinout & Package
Package: Hermetically sealed voidless hard glass case ("E" package / "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 | Current sink terminal in reverse breakdown | Connected to system ground or lower-potential node to establish regulated reference voltage at cathode. |
| Cathode | Regulated output terminal | Provides stable 16 V reference; marked with band; must be routed with low-inductance trace in noise-sensitive analog sections. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/356 qualified (JANS) | Meets full screening requirements for spaceflight and nuclear command systems - including burn-in, temperature cycling, and hermeticity testing. |
| Voidless hermetic glass construction | Eliminates internal delamination risk under thermal stress - critical for >10-year field life in sealed satellite modules. |
| Category I metallurgical bond | Ensures interfacial integrity between silicon die and tungsten slug - prevents bond lift during mechanical shock up to 1000 g. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Withstands ≥4 kV HBM without parameter shift - simplifies handling in cleanroom assembly without special grounding protocols. |
| Radiation hardness (MicroNote 050) | Tolerates ≥100 krad(Si) total ionizing dose - suitable for low-earth orbit payloads without shielding overhead. |
Applications
| Aerospace Power Conditioning | Avionics Reference Supply |
|---|---|
|
Use Scenario: Regulating auxiliary 16 V rail in flight control computer power distribution unit exposed to –55 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference for isolated DC-DC converter feedback loop. Use Value: Maintains ±0.13 V regulation over full temperature range and 10–500 mA load, eliminating need for active compensation circuitry. |
Use Scenario: Providing stable bias to pressure transducer amplifier in cockpit environmental monitoring system. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric sensor excitation. Use Value: 5 μA max leakage at 12.2 V prevents loading error in 10 MΩ input impedance front-end stages. |
| Radiation-Hardened Instrumentation | High-Reliability Test Equipment |
|
Use Scenario: Voltage reference in on-board radiation dosimeter calibration circuit operating in geosynchronous orbit. IC Role / Device Role / Timing Role: Primary Zener reference for ADC reference buffer stage. Use Value: 0.08 %/°C tempco and 100 krad(Si) TID tolerance enable <1 LSB drift over mission lifetime without recalibration. |
Use Scenario: Stable 16 V source in automated test fixture verifying military-grade op-amp PSRR performance. IC Role / Device Role / Timing Role: Calibration reference for programmable load controller. Use Value: 3.5 Ω dynamic impedance ensures <0.5 mV ripple under 100 mA step load - meets Class A metrology traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4963CUS/TR | Same electrical specs, but screened to JANTXV level (higher reliability screening than JANS, including 100% lot acceptance testing). | Required for DoD programs mandating JANTXV qualification; not approved for spaceflight use where JANS is mandatory. | Select JANTXV1N4963CUS/TR only when program spec explicitly requires JANTXV screening - JANS suffices for most space-qualified designs. |
| 1N4963CUS/TR | Commercial-grade version; identical Zener voltage, tolerance, and package, but no MIL-PRF-19500/356 qualification or radiation data. | Suitable for industrial test equipment or non-safety-critical embedded systems where cost and lead time outweigh reliability requirements. | Choose 1N4963CUS/TR for prototyping or commercial production where MIL-spec is not contractually required. |
Compared with JANS1N4963CUS/TR, JANTXV1N4963CUS/TR adds screening rigor but excludes spaceflight approval, while 1N4963CUS/TR removes all military qualification - making JANS1N4963CUS/TR the sole choice for radiation-tolerant, hermetically sealed, space-qualified 16 V reference regulation.
Availability
JANS1N4963CUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, avionics reference supply, and radiation-hardened instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANS1N4963CUS/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 defense-grade analog and mixed-signal components.
The JANS1N4963CUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356 Zener diode family, engineered specifically for voltage regulation in mission-critical aerospace, defense, and nuclear systems where failure is not an option.
FAQ
What is the Zener voltage tolerance and test current for JANS1N4963CUS/TR?
JANS1N4963CUS/TR has a nominal Zener voltage of 16 V with ±2% tolerance (denoted by the "C" suffix), measured at a test current (IZT) of 75 mA. This tolerance ensures repeatable reference accuracy across production lots and supports tight feedback-loop design in regulated power supplies without post-assembly trimming.
Is JANS1N4963CUS/TR suitable for spaceflight applications?
Yes, JANS1N4963CUS/TR is qualified to MIL-PRF-19500/356 at the JANS level and documented in Microsemi MicroNote 050 as inherently radiation-hardened to ≥100 krad(Si). It is approved for use in low-earth orbit and geosynchronous satellite subsystems where hermetic sealing and long-term parametric stability are mandatory.
What is the maximum power dissipation and thermal derating behavior of JANS1N4963CUS/TR?
JANS1N4963CUS/TR is rated for 5 W power dissipation at an end-cap temperature (TEC) of 140 °C. Above that, it derates linearly to zero at 175 °C, with a junction-to-end-cap thermal resistance of 7 °C/W - enabling direct mounting to aluminum chassis or cold plates without additional thermal interface materials in conduction-cooled avionics enclosures.
Does JANS1N4963CUS/TR have ESD protection, and what standard does it meet?
JANS1N4963CUS/TR is nonsensitive to electrostatic discharge per MIL-STD-750 Method 1020, meaning it withstands ≥4 kV human-body-model (HBM) stress without parameter shift or functional degradation. This eliminates the need for special ESD handling during board assembly in controlled environments.
What packaging and marking details apply to JANS1N4963CUS/TR?
JANS1N4963CUS/TR uses the "E" package (also known as "D-5B"), a hermetically sealed voidless glass case with copper end caps and Sn/Pb finish. It carries no visible marking per specification; polarity is indicated solely by a cathode band. Tape-and-reel packaging complies with EIA-481-B standards for automated placement.
JANS1N4963CUS/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
JANS1N4963CUS/TR FAQ
1.How can I place an order for JANS1N4963CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4963CUS/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 JANS1N4963CUS/TR reliable?
The price and inventory of JANS1N4963CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4963CUS/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4963CUS/TR?
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4.How is shipping managed for JANS1N4963CUS/TR?
JANS1N4963CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4963CUS/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 JANS1N4963CUS/TR?
For technical support, including JANS1N4963CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4963CUS/TR requirements.
6.How does Aetrix verify that JANS1N4963CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4963CUS/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 JANS1N4963CUS/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4963CUS/TR?
All JANS1N4963CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4963CUS/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 JANS1N4963CUS/TR part is unused and in its original packaging.
Return procedure for JANS1N4963CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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