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Microchip Technology JANTX1N4961US/TR
- Part No.:
- JANTX1N4961US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTX1N4961US/TR.pdf
- Description:
- DIODE ZENER 13V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:9,552
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Product details
Overview
JANTX1N4961US/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode rated for 5 W power dissipation, with nominal Zener voltage of 13 V at 100 mA test current, ±5% tolerance, and maximum dynamic impedance of 3.0 Ω at IZT. It operates from –65 °C to +175 °C and is used in high-reliability voltage regulation circuits for aerospace power conditioning and radiation-hardened instrumentation.
For engineers reviewing the JANTX1N4961US/TR datasheet, JANTX1N4961US/TR pinout, JANTX1N4961US/TR application, or JANTX1N4961US/TR equivalent, this part delivers verified 13 V regulation under wide-temperature, high-surge conditions with voidless-glass construction, Category I metallurgical bonding, and MIL-PRF-19500/356 qualification - critical for fail-safe analog reference and overvoltage clamp design.
Technical Context
This Zener diode functions as a precision shunt voltage regulator in series-pass or feedback reference configurations. Its 13 V nominal breakdown voltage is stabilized across 10%–50% of IZM (365 mA), with ΔVZ ≤ 0.9 V and temperature coefficient αVZ = +0.08 %/°C at IZT, enabling predictable drift compensation in high-temperature environments.
The device uses a voidless hermetic glass package with tungsten slugs and copper end caps (Sn/Pb finish), supporting 20 A surge current (8.3 ms square wave) and exhibiting 1.5 V forward voltage at 1.0 A. Its thermal resistance is 7 °C/W junction-to-end-cap, enabling stable operation at TJ up to +175 °C when mounted on thermally optimized PCB pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 13 V ±5% at IZT = 100 mA - defines regulated output voltage under nominal bias |
| Power Dissipation | 5 W @ TEC = 140 °C - requires heatsinking or thermal pad design for sustained full-load operation |
| Dynamic Impedance ZZ | 3.0 Ω at IZT - ensures low output impedance for stable regulation under load transients |
| Max Reverse Leakage IR | 10 μA at VR = 9.9 V - guarantees minimal quiescent current in standby clamp applications |
| Surge Current IZSM | 16 A at 8.3 ms - supports transient overvoltage suppression without failure |
| Temp Coefficient αVZ | +0.08 %/°C - enables predictable voltage drift modeling across –65 °C to +175 °C |
| Forward Voltage VF | 1.5 V at 1.0 A - defines conduction loss during reverse-polarity fault protection |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with copper end caps (Sn/Pb finish), 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-bias regulation mode | Connected to system ground or low-side reference point in shunt regulator topology |
| Cathode | Current source terminal in reverse-bias regulation mode | Connected to unregulated input rail; voltage at this node is clamped to 13 V ±5% |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass construction | Eliminates internal delamination risk under thermal cycling and high-humidity environments |
| Category I metallurgical bond | Ensures mechanical integrity and long-term reliability under shock/vibration in aerospace platforms |
| MIL-PRF-19500/356 qualification (JANTX) | Validated for Class S screening including burn-in, temperature cycling, and life testing per military standard |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Enables handling without special ESD controls during board assembly and rework |
| Inherent radiation hardness | Supports operation in total ionizing dose (TID) environments without derating or shielding |
Applications
| Aerospace Power Bus Regulation | Radiation-Hardened Instrumentation Reference |
|---|---|
Use Scenario: Regulating 28 V aircraft bus-derived 13 V supply for flight control sensor interfaces. IC Role / Device Role / Timing Role: Shunt voltage regulator providing stable 13 V reference for ADC front-ends and op-amp biasing. Use Value: Maintains regulation within ±5% across –55 °C to +125 °C ambient while surviving 20 A lightning-induced surges. |
Use Scenario: Generating a hardened voltage reference in satellite telemetry modules exposed to >100 krad(Si) TID. IC Role / Device Role / Timing Role: Precision Zener reference element in radiation-tolerant bandgap-free voltage references. Use Value: Delivers stable 13 V output with <0.1 %/°C drift and no parametric shift after irradiation. |
| High-Temperature Downhole Sensor Clamping | Military Avionics Overvoltage Protection |
Use Scenario: Clamp circuit protecting analog signal chains in oil/gas logging tools operating at +175 °C. IC Role / Device Role / Timing Role: High-temperature Zener clamp limiting input voltage to downstream amplifiers. Use Value: Remains functional at junction temperatures up to +175 °C with <10 μA leakage at 9.9 V reverse bias. |
Use Scenario: Input-stage overvoltage protection in ruggedized UAV flight controllers subjected to EMP events. IC Role / Device Role / Timing Role: Surge-absorbing shunt regulator diverting transient energy away from sensitive logic rails. Use Value: Withstands 16 A, 8.3 ms surges without degradation, preserving system uptime in contested EM environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4961US/TR | Higher screening level (JANTXV vs JANTX); includes additional life test and lot acceptance testing per MIL-PRF-19500/356 | Required for Class B or mission-critical systems where extended reliability validation is mandated | Select JANTXV1N4961US/TR when full JANTXV screening and enhanced lot traceability are contractually required |
| 1N4961US/TR | Commercial-grade version; lacks MIL-PRF-19500/356 qualification, no temperature cycling or burn-in screening | Suitable only for non-military industrial applications with ambient ≤ +125 °C and no radiation exposure | Choose 1N4961US/TR only for cost-sensitive, non-qualified designs where military reliability is not required |
Compared with JANTX1N4961US/TR, the JANTXV variant adds life testing and tighter process controls for ultra-high-reliability deployment, while the commercial 1N4961US/TR omits all military screening - making the JANTX grade the optimal balance of proven ruggedness and procurement availability for defense electronics.
Availability
JANTX1N4961US/TR is available at Aetrix Electronics and suitable for aerospace power regulation, radiation-hardened instrumentation, and high-temperature downhole sensing requiring stable component supply across extended product lifecycles.
Supply support for JANTX1N4961US/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 manufacturer specializing in high-reliability, radiation-hardened, and aerospace-grade components.
The JANTX1N4961US/TR belongs to Microsemi's legacy MIL-PRF-19500/356 qualified Zener diode family, engineered specifically for fail-safe voltage regulation in mission-critical defense, space, and energy exploration systems.
FAQ
What is the Zener voltage tolerance for JANTX1N4961US/TR?
JANTX1N4961US/TR has a nominal Zener voltage of 13 V with a standard tolerance of ±5%, as specified in the Microsemi SD44A datasheet. This tolerance applies at the test current IZT = 100 mA and ambient temperature of 25 °C. No suffix letter (e.g., C or D) is present in the part number, confirming the 5% tolerance grade.
Is JANTX1N4961US/TR suitable for operation at +175 °C?
Yes, JANTX1N4961US/TR is rated for continuous operation at junction temperatures up to +175 °C, with storage temperature range also spanning –65 °C to +175 °C. Its 7 °C/W thermal resistance and voidless-glass package enable reliable performance at this extreme upper limit when properly mounted on thermally conductive PCB pads.
Does JANTX1N4961US/TR have MIL-PRF-19500/356 qualification?
Yes, JANTX1N4961US/TR is explicitly qualified to MIL-PRF-19500/356 under the JANTX screening level. This includes environmental stress screening such as temperature cycling, steady-state life test, and electrical verification per the specification - confirmed in the official Microsemi SD44A datasheet revision E.
What is the maximum surge current rating for JANTX1N4961US/TR?
JANTX1N4961US/TR supports a non-repetitive peak Zener surge current (IZSM) of 16 A for an 8.3 ms square-wave pulse, as documented in the SD44A datasheet. This rating reflects its capability to absorb transient overvoltage events without parametric shift or catastrophic failure.
How is polarity marked on JANTX1N4961US/TR?
JANTX1N4961US/TR uses a cathode band to indicate polarity - the banded end is the cathode terminal. This marking is consistent across the entire 1N4954US–1N4996US series and is visible on the voidless glass body. The anode connects to the unmarked end cap.
JANTX1N4961US/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:
- ±5%
- 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
JANTX1N4961US/TR FAQ
1.How can I place an order for JANTX1N4961US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4961US/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 JANTX1N4961US/TR reliable?
The price and inventory of JANTX1N4961US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4961US/TR is usually 5 days.
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JANTX1N4961US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4961US/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 JANTX1N4961US/TR?
For technical support, including JANTX1N4961US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4961US/TR requirements.
6.How does Aetrix verify that JANTX1N4961US/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4961US/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 JANTX1N4961US/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4961US/TR?
All JANTX1N4961US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4961US/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 JANTX1N4961US/TR part is unused and in its original packaging.
Return procedure for JANTX1N4961US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4961US/TR Tags
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