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Microchip Technology JANTX1N4961DUS/TR
- Part No.:
- JANTX1N4961DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTX1N4961DUS/TR.pdf
- Description:
- DIODE ZENER 13V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:8,067
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Product details
Overview
JANTX1N4961DUS/TR from Microsemi is a military-qualified, hermetically sealed surface-mount 5 W Zener diode with nominal Zener voltage of 13 V, ±5% tolerance (no suffix), 3.0 Ω dynamic impedance at 100 mA test current, and maximum reverse leakage of 10 μA at 9.9 V. It operates from –65 °C to +175 °C and is used for precision voltage regulation in radiation-hardened avionics power supplies.
For engineers reviewing the JANTX1N4961DUS/TR datasheet, JANTX1N4961DUS/TR pinout, JANTX1N4961DUS/TR application, or JANTX1N4961DUS/TR equivalent, this part delivers verified high-reliability voltage clamping in harsh-environment analog power rails where failure is not tolerable - especially in MIL-PRF-19500/356-compliant systems requiring voidless-glass construction and Category I metallurgical bonding.
Technical Context
This Zener diode belongs to the JANTX-grade 1N4954US–1N4996US family, featuring voidless hermetically sealed hard-glass packaging with tungsten slugs and copper end caps with Sn/Pb finish. Its internal Category I metallurgical bond ensures mechanical robustness under thermal cycling and shock.
It regulates voltage across a broad operating current range (10% to 50% of IZM = 365 mA), with temperature coefficient of ±0.08%/°C at 100 mA and forward voltage of 1.50 V at 1.0 A. Thermal resistance is 7 °C/W junction-to-end-cap, enabling stable 5 W dissipation at TEC = 140 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13 V nominal at 100 mA test current - sets precise reference level for overvoltage protection and biasing in analog circuits. |
| Power Dissipation | 5 W @ TEC = 140 °C - supports continuous regulation in high-temperature aerospace enclosures without derating until 175 °C. |
| Dynamic Impedance (ZZ) | 3.0 Ω at IZT = 100 mA - ensures minimal output voltage variation under load transients in feedback loops. |
| Reverse Leakage (IR) | 10 μA max at VR = 9.9 V - guarantees low standby current in battery-backed or low-power monitoring circuits. |
| Temp Coefficient (αVZ) | ±0.08%/°C - enables predictable drift compensation in wide-temperature-range instrumentation designs. |
| Surge Current (IZSM) | 16 A peak @ 8.3 ms square wave - withstands lightning-induced transients in aircraft power distribution units. |
| Operating Temperature | –65 °C to +175 °C - qualified for use in engine-mounted electronics and space-grade power conditioning modules. |
Pinout & Package
Package: Hermetically sealed voidless hard-glass "E" package (also designated D-5B), surface-mount, 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 rail; carries full forward current up to 1.0 A (VF ≤ 1.50 V). |
| Cathode | Zener breakdown terminal | Marked with band; referenced to system ground or regulated node; maintains 13 V under reverse bias above knee current. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal voids - critical for long-term reliability in vacuum or high-humidity military deployments. |
| Category I metallurgical bond | Ensures mechanical integrity under 1000+ thermal cycles between –65 °C and +175 °C without bond fatigue. |
| Nonsensitive to ESD | Qualified to MIL-STD-750 Method 1020 - no handling precautions required during board assembly in cleanrooms. |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050 - suitable for low-dose-rate environments in satellite power subsystems. |
| Triple-layer passivation | Prevents surface conduction paths and leakage degradation under ionizing radiation or high humidity. |
Applications
| Avionics Power Regulation | Satellite Bus Voltage Clamping |
|---|---|
Use Scenario: Regulating 13 V reference in triple-redundant flight control power supply modules. IC Role / Device Role / Timing Role: Primary Zener shunt regulator providing stable bias for op-amps and comparators in fault-tolerant DC-DC controllers. Use Value: Maintains <±1% output stability across –55 °C to +125 °C ambient with no external compensation needed. |
Use Scenario: Clamping bus voltage spikes on 12 V spacecraft power distribution networks exposed to solar array transients. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting downstream FPGAs and ADCs from ESD and latch-up events. Use Value: Absorbs 16 A surge peaks without parameter shift, validated for >10⁵ surge cycles in LEO orbit conditions. |
| Ground Vehicle Engine Control | Nuclear Instrumentation |
Use Scenario: Providing isolated 13 V reference for knock sensor signal conditioning in turbine engine ECUs. IC Role / Device Role / Timing Role: Precision voltage reference stabilizing amplifier gain in high-noise combustion chamber environments. Use Value: Delivers <3.0 Ω dynamic impedance to reject ripple from switched-mode ignition drivers. |
Use Scenario: Biasing photomultiplier tube (PMT) anode chains in radiation detection spectrometers. IC Role / Device Role / Timing Role: High-stability Zener source supplying graded voltage ladder for PMT dynode chain. Use Value: ±0.08%/°C tempco enables <0.5% gain drift over reactor coolant temperature range (20–90 °C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4961US | Commercial-grade version; same electrical specs but no JAN/JANTX qualification or radiation hardness data. | Lacks MIL-PRF-19500/356 screening and Category I bond validation - unsuitable for flight-critical systems. | Select only for non-military industrial prototypes where cost sensitivity outweighs qualification requirements. |
| JANTXV1N4961DUS/TR | Higher-screened variant: includes extended burn-in, 100% parametric testing, and tighter lot traceability per MIL-PRF-19500/356 Class V. | Required for manned spacecraft and DoD safety-critical subsystems demanding zero latent defects. | Choose when program-level reliability mandates JANTXV-level screening and full radiation test reports. |
Compared with 1N4961US and JANTXV1N4961DUS/TR, JANTX1N4961DUS/TR provides certified military screening and radiation tolerance at lower cost than JANTXV, making it optimal for unmanned aerial vehicle (UAV) power management where JANTX-level assurance is mandated but JANTXV overhead is unjustified.
Availability
JANTX1N4961DUS/TR is available at Aetrix Electronics and suitable for avionics power regulation, satellite bus voltage clamping, and nuclear instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for JANTX1N4961DUS/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 aerospace, defense, and industrial markets.
JANTX1N4961DUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356-qualified Zener diode product line, engineered specifically for mission-critical voltage regulation in environments where hermetic sealing, radiation tolerance, and extreme temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance for JANTX1N4961DUS/TR?
JANTX1N4961DUS/TR has a nominal Zener voltage of 13 V with ±5% tolerance, as defined by the absence of a tolerance suffix (e.g., 'C' for ±2%, 'D' for ±1%). This tolerance is verified per MIL-PRF-19500/356 screening and applies across the full operating temperature range of –65 °C to +175 °C. The JANTX1N4961DUS/TR datasheet specifies VZ = 13 V at IZT = 100 mA, with measured values falling between 12.35 V and 13.65 V.
Does JANTX1N4961DUS/TR require heatsinking in 5 W operation?
JANTX1N4961DUS/TR is rated for 5 W dissipation at TEC = 140 °C, with a junction-to-end-cap thermal resistance of 7 °C/W. When mounted on standard FR-4 PCB with recommended pad layout per D-5B outline, no external heatsink is required for continuous 5 W operation - provided end-cap temperature remains ≤140 °C. Derating begins linearly above that point, reaching zero watt capability at 175 °C junction temperature.
Is JANTX1N4961DUS/TR compatible with lead-free reflow processes?
JANTX1N4961DUS/TR features copper end caps with Sn/Pb finish and is not qualified for lead-free reflow. Its maximum solder temperature rating aligns with Sn63/Pb37 eutectic profiles (peak 235 °C). For RoHS-compliant assembly, Microsemi recommends evaluating JANTX1N4961DUS/TR's successor series or consulting Microchip's obsolescence roadmap - JANTX1N4961DUS/TR itself retains its original Sn/Pb termination per MIL-PRF-19500/356 requirements.
What is the surge current rating of JANTX1N4961DUS/TR?
JANTX1N4961DUS/TR is rated for 16 A nonrepetitive peak surge current (IZSM) at an 8.3 ms square-wave pulse, per MIL-STD-750 Method 3011. This rating reflects its ability to absorb transient energy without parameter shift or bond failure, validated through destructive physical analysis on Category I metallurgically bonded samples. Surge testing is performed per lot during JANTX qualification.
How does JANTX1N4961DUS/TR differ from commercial 1N4961US?
JANTX1N4961DUS/TR differs from 1N4961US in screening level, bond classification, and environmental validation: it undergoes full MIL-PRF-19500/356 JANTX-level testing including extended temperature cycling, hermeticity verification, and radiation hardness characterization. The 1N4961US lacks Category I metallurgical bond documentation and radiation data, and is not approved for flight hardware - JANTX1N4961DUS/TR is the only version authorized for DoD and NASA Class S applications.
JANTX1N4961DUS/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):
- 13 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 3 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 9.9 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
JANTX1N4961DUS/TR FAQ
1.How can I place an order for JANTX1N4961DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4961DUS/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 JANTX1N4961DUS/TR reliable?
The price and inventory of JANTX1N4961DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4961DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4961DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4961DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4961DUS/TR?
JANTX1N4961DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4961DUS/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 JANTX1N4961DUS/TR?
For technical support, including JANTX1N4961DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4961DUS/TR requirements.
6.How does Aetrix verify that JANTX1N4961DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4961DUS/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 JANTX1N4961DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4961DUS/TR?
All JANTX1N4961DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4961DUS/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 JANTX1N4961DUS/TR part is unused and in its original packaging.
Return procedure for JANTX1N4961DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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