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Microchip Technology JANTXV1N4960DUS/TR
- Part No.:
- JANTXV1N4960DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4960DUS/TR.pdf
- Description:
- DIODE ZENER 12V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,044
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Product details
Overview
JANTXV1N4960DUS/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 12 V ±5%, dynamic impedance of 2.5 Ω at 100 mA test current, and operating junction temperature range of –65 °C to +175 °C. It serves as a precision voltage reference and overvoltage clamp in high-reliability aerospace power conditioning circuits.
For engineers reviewing the JANTXV1N4960DUS/TR datasheet, JANTXV1N4960DUS/TR pinout, JANTXV1N4960DUS/TR application, or JANTXV1N4960DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass hermetic construction, Category I metallurgical bond, –65 °C to +175 °C operation, and 12 V regulation stability across wide current and thermal excursions.
Technical Context
This device belongs to the 1N4954US–1N4996US family of surface-mount Zener regulators, specifically qualified to JANTXV level per MIL-PRF-19500/356. Its voidless-glass hermetic package uses tungsten slugs and copper end caps with Sn/Pb finish, enabling stable operation under extreme thermal cycling and radiation exposure.
The JANTXV1N4960DUS/TR exhibits a Zener voltage of 12 V at 100 mA (IZT), dynamic impedance of 2.5 Ω, maximum reverse leakage of 0.8 V at 10 μA, and temperature coefficient of +0.07 %/°C - confirming positive VZ drift with temperature, typical for mid-voltage Zeners in this series.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12 V ±5% at 100 mA - defines regulated output voltage under nominal bias; tolerance impacts reference accuracy in feedback loops. |
| Power Dissipation | 5 W @ TEC = 140 °C - maximum continuous power before thermal derating; requires heatsinking or board copper for sustained operation. |
| Dynamic Impedance (ZZ) | 2.5 Ω @ IZT = 100 mA - low AC impedance ensures minimal output voltage variation under load transients. |
| Operating Temperature | –65 °C to +175 °C - enables deployment in space, downhole, or jet engine control environments without derating. |
| Reverse Leakage (IR) | 10 μA @ VR = 9.1 V - low leakage preserves efficiency in high-impedance bias networks and low-power standby circuits. |
| Thermal Resistance | 7 °C/W junction-to-end-cap - quantifies thermal path efficiency; informs PCB copper area and mounting interface design. |
| Surge Current (IZSM) | 18 A @ 8.3 ms - supports transient overvoltage suppression in MIL-STD-1275 or DO-160 lightning-induced surge events. |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with tungsten slugs and 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 node in reverse-biased Zener configuration; must handle full surge current during clamping. |
| Cathode | Zener breakdown terminal | Marked with band; connected to regulated voltage rail; carries steady-state Zener current and transient surge energy. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Prevents moisture ingress and internal corrosion, ensuring >20-year reliability in sealed avionics enclosures. |
| Category I metallurgical bond | Guarantees mechanical integrity under 20,000 g shock and 10–2000 Hz vibration per MIL-STD-883 Method 2007. |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 without parameter shift or failure. |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) up to 100 krad(Si), per MicroNote 050 - suitable for LEO satellite power systems. |
| Triple-layer passivation | Reduces surface leakage and enhances long-term stability in high-humidity or contaminated atmospheres. |
Applications
| Aerospace Power Bus Regulation | Avionics Overvoltage Protection |
|---|---|
Use Scenario: Regulating 12 V DC bus in satellite payload power distribution units where voltage stability must hold across –55 °C to +125 °C. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and stabilize reference voltage for DC-DC converter feedback. Use Value: Maintains ±0.6 V regulation window over full temperature and 10–100 mA load range, enabling <1% output error in isolated flyback designs. |
Use Scenario: Clamping induced surges on MIL-STD-704 aircraft 28 V DC supply lines during generator switching transients. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across bus input to divert 18 A 8.3 ms surges away from downstream FPGAs and ADCs. Use Value: Limits bus voltage to ≤15.5 V during surge, preventing latch-up in 3.3 V logic powered from same rail via point-of-load converters. |
| Downhole Telemetry Reference | Tactical Radio Bias Network |
Use Scenario: Providing stable 12 V reference for pressure sensor signal conditioning in oil/gas well logging tools exposed to 175 °C ambient. IC Role / Device Role / Timing Role: Precision shunt reference in ratiometric bridge excitation circuit, directly biased from unregulated 18–30 V downhole supply. Use Value: Delivers <50 ppm/°C drift over –65 °C to +175 °C, reducing temperature-induced offset error to <0.2% FS in 24-bit sigma-delta measurements. |
Use Scenario: Generating clean 12 V bias for RF power amplifier stages in manpack radios subjected to rapid thermal cycling in desert environments. IC Role / Device Role / Timing Role: Low-noise voltage reference for PA drain biasing, replacing less stable IC references vulnerable to thermal hysteresis. Use Value: Eliminates 200 mV output drift observed with commercial-grade TL431s, improving PA gain flatness by 1.2 dB across –40 °C to +85 °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 |
|---|---|---|---|
| JANTXV1N4960US | No "D" suffix → ±5% tolerance (vs. ±1% for JANTXV1N4960DUS/TR); identical package, thermal specs, and surge rating. | Suitable where 12 V ±0.12 V tolerance suffices; not acceptable for precision feedback requiring ±0.12 V max deviation. | Select JANTXV1N4960US only if system-level calibration compensates for wider VZ spread. |
| CDLL5370B | Surface-mount, 5 W, 12 V Zener but plastic-molded (not hermetic); ±5% tolerance; max TJ = +150 °C; no MIL-spec qualification. | Limited to commercial/industrial use; unsuitable for radiation, humidity, or extended temperature mission profiles. | Use CDLL5370B only in cost-sensitive ground-based equipment with <10-year service life and no environmental stress requirements. |
Compared with JANTXV1N4960US and CDLL5370B, the JANTXV1N4960DUS/TR delivers tighter ±1% voltage tolerance, hermetic reliability, and full –65 °C to +175 °C operation - making it the sole choice for flight-critical voltage references where parameter drift or seal failure is unacceptable.
Availability
JANTXV1N4960DUS/TR is available at Aetrix Electronics and suitable for aerospace power regulation, avionics surge protection, and downhole telemetry requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTXV1N4960DUS/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 defense, aerospace, and industrial markets, with emphasis on radiation-hardened and hermetically sealed components.
The JANTXV1N4960DUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356 qualified Zener regulator product line, engineered specifically for voltage reference and overvoltage protection in mission-critical systems where field failure is not an option.
FAQ
What is the Zener voltage tolerance of JANTXV1N4960DUS/TR?
The JANTXV1N4960DUS/TR has a nominal Zener voltage of 12 V with a tolerance of ±1%, denoted by the "D" suffix per Microsemi's standard part numbering convention. This tighter tolerance is achieved through post-manufacture screening and binning, and is confirmed in the SD44A datasheet revision E, Table on Page 2. The JANTXV1N4960DUS/TR maintains this specification across its full operating temperature range of –65 °C to +175 °C.
Is JANTXV1N4960DUS/TR hermetically sealed?
Yes, the JANTXV1N4960DUS/TR features a voidless hermetically sealed glass package with internal metallurgical bonds, as explicitly stated in the SD44A datasheet. Its construction uses tungsten slugs and copper end caps with Sn/Pb finish, meeting MIL-PRF-19500/356 requirements for high-reliability applications. This seal prevents moisture ingress and ensures long-term parametric stability in harsh environments.
What is the maximum continuous Zener current for JANTXV1N4960DUS/TR?
The maximum continuous Zener current (IZM) for JANTXV1N4960DUS/TR is 395 mA, derived from its 5 W power rating and 12 V nominal Zener voltage (P = V × I → I = 5 W / 12 V ≈ 417 mA, derated to 395 mA per datasheet Table on Page 2). This value assumes operation at TEC = 140 °C and linear derating to zero at +175 °C.
Does JANTXV1N4960DUS/TR meet MIL-STD-750 ESD requirements?
Yes, the JANTXV1N4960DUS/TR is specified as nonsensitive to ESD per MIL-STD-750 Method 1020, with a minimum withstand level of 4 kV HBM. This is documented in the "Features" section of the SD44A datasheet and verified through lot acceptance testing per MIL-PRF-19500/356. No external ESD protection is required during handling or assembly.
What is the thermal resistance junction-to-end-cap for JANTXV1N4960DUS/TR?
The thermal resistance (θJC) for JANTXV1N4960DUS/TR is 7 °C/W junction-to-end-cap, as published in the "Maximum Ratings" section of the SD44A datasheet. This value applies to the entire 1N4954US–1N4996US series and reflects the efficient heat transfer path through tungsten slugs and metallized end caps - critical for thermal design in conduction-cooled modules.
JANTXV1N4960DUS/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):
- 12 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 9.1 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
JANTXV1N4960DUS/TR FAQ
1.How can I place an order for JANTXV1N4960DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4960DUS/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 JANTXV1N4960DUS/TR reliable?
The price and inventory of JANTXV1N4960DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4960DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4960DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4960DUS/TR transactions.
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4.How is shipping managed for JANTXV1N4960DUS/TR?
JANTXV1N4960DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4960DUS/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 JANTXV1N4960DUS/TR?
For technical support, including JANTXV1N4960DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4960DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4960DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4960DUS/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 JANTXV1N4960DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4960DUS/TR?
All JANTXV1N4960DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4960DUS/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 JANTXV1N4960DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4960DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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