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Microchip Technology JANTXV1N4971DUS/TR
- Part No.:
- JANTXV1N4971DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4971DUS/TR.pdf
- Description:
- DIODE ZENER 36V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:9,436
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Product details
Overview
JANTXV1N4971DUS/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 36 V ±1% (D-suffix), dynamic impedance of 11 Ω at 40 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 JANTXV1N4971DUS/TR datasheet, JANTXV1N4971DUS/TR pinout, JANTXV1N4971DUS/TR application, or JANTXV1N4971DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, hermetic glass package with tungsten slugs, Category I metallurgical bond, −65 °C to +175 °C operation, and 1% voltage tolerance - critical for radiation-hardened and mission-critical analog regulation.
Technical Context
This device belongs to the 1N4954US–1N4996US family of military-qualified Zener regulators. It uses a voidless hard-glass hermetic seal with internal Category I metallurgical bonds and triple-layer passivation, ensuring long-term stability under thermal cycling and radiation exposure. Its construction eliminates moisture ingress and interfacial voids that cause parametric drift in harsh environments.
The JANTXV1N4971DUS/TR operates across a wide reverse current range (10% to 50% of IZM) with ΔVZ ≤ 3.0 V regulation error, and exhibits low temperature coefficient (+0.095%/°C) for minimal voltage drift over temperature. Its 1.5 V forward voltage at 1 A supports reliable polarity verification during functional test.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±1% at 40 mA - enables precise 36 V rail regulation with tight tolerance for avionics reference circuits |
| Power Dissipation | 5 W @ TEC = 140 °C - supports sustained operation in conduction-cooled high-power analog stages |
| Dynamic Impedance (ZZ) | 11 Ω @ IZT = 40 mA - ensures low AC ripple coupling into regulated output under load transients |
| Max Reverse Leakage (IR) | 2 μA @ VR = 27.4 V - guarantees negligible standby current draw in battery-backed systems |
| Operating Temperature | −65 °C to +175 °C - validated for use in satellite power subsystems and jet engine control electronics |
| Thermal Resistance (RθJC) | 7 °C/W junction-to-end-cap - allows direct thermal path to chassis for passive cooling without heatsinks |
| Surge Current (IZSM) | 5.0 A @ 8.3 ms - withstands lightning-induced transients per DO-160 Section 22 Level 3 |
Pinout & Package
Package: Hermetically sealed voidless hard-glass "E" package (also designated D-5B), with copper end caps finished in Sn/Pb, cathode indicated by band, weight 539 mg, and EIA-481-B tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential node; enables standard diode test with 1.5 V forward drop at 1 A |
| Cathode | Zener breakdown terminal | Connected to regulated voltage rail; marked by visible band; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture-induced parameter shift and corrosion failure modes in 100% RH, 125 °C storage |
| Category I metallurgical bond | Ensures mechanical integrity and thermal cycle reliability >1000 cycles between −65 °C and +175 °C |
| Triple-layer passivation | Prevents surface leakage and ion migration under high-bias DC stress in space-grade applications |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 without parameter degradation |
| Inherent radiation hardness | Qualified to 100 krad(Si) TID per MicroNote 050 - no derating required for LEO satellite missions |
Applications
| Aerospace Power Conditioning | Avionics Reference Supply |
|---|---|
Use Scenario: Regulating 36 V primary bus in satellite power distribution units under thermal vacuum and radiation exposure. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference and overvoltage clamp. Use Value: Maintains ±1% output accuracy across −65 °C to +175 °C while surviving 100 krad(Si) total ionizing dose. |
Use Scenario: Providing stable 36 V reference for ADC biasing and sensor excitation in flight control computers. IC Role / Device Role / Timing Role: Precision voltage reference element with low dynamic impedance (11 Ω). Use Value: Limits reference drift to <0.095%/°C, enabling sub-LSB measurement accuracy over full operational temperature range. |
| Military Radar Bias Supply | Tactical Radio Transmitter Protection |
Use Scenario: Stabilizing high-voltage bias rails for GaN RF amplifiers in ground-based radar transmitters. IC Role / Device Role / Timing Role: Shunt regulator absorbing transient energy during amplifier switching events. Use Value: Withstands 5.0 A surge current (8.3 ms) and dissipates 5 W continuously without thermal runaway. |
Use Scenario: Clamping antenna port voltage surges induced by nearby lightning strikes in manpack radios. IC Role / Device Role / Timing Role: Overvoltage protection device placed across RF front-end input stage. Use Value: Responds within nanoseconds to limit transient voltage to 36 V ±1%, protecting sensitive LNAs from damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4970DUS/TR | Zener voltage 33 V ±1%; 10 Ω ZZ @ 40 mA; same package and qualification | Suitable where 33 V rail regulation is required instead of 36 V | Select when system architecture mandates exact 33 V reference with identical reliability profile |
| JANTXV1N4972DUS/TR | Zener voltage 39 V ±1%; 14 Ω ZZ @ 30 mA; same thermal resistance and radiation hardness | Used in 39 V intermediate bus designs requiring tighter regulation than standard 5% parts | Choose for 39 V systems needing MIL-PRF-19500/356 compliance and 1% tolerance |
Compared with JANTXV1N4970DUS/TR and JANTXV1N4972DUS/TR, the JANTXV1N4971DUS/TR provides the only 36 V option in this 1% tolerance, hermetic, 5 W military Zener series - making it irreplaceable for legacy 36 V avionics architectures requiring zero voltage deviation.
Availability
JANTXV1N4971DUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, avionics reference supply, and military radar bias supply requiring stable component supply with guaranteed long-term obsolescence management.
Supply support for JANTXV1N4971DUS/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 military-qualified analog and mixed-signal components.
The JANTXV1N4971DUS/TR belongs to Microsemi's 1N49xxUS military Zener family, designed specifically for mission-critical voltage regulation in aerospace, defense, and nuclear instrumentation systems where failure is not an option.
FAQ
What is the Zener voltage tolerance of JANTXV1N4971DUS/TR?
The JANTXV1N4971DUS/TR has a Zener voltage tolerance of ±1%, indicated by the "D" suffix in its part number. This corresponds to a nominal 36 V Zener voltage ranging from 35.64 V to 36.36 V at the specified test current of 40 mA, meeting MIL-PRF-19500/356 requirements for high-precision regulation.
Is JANTXV1N4971DUS/TR qualified to MIL-PRF-19500/356?
Yes, JANTXV1N4971DUS/TR is fully qualified to MIL-PRF-19500/356 as a JANTXV-grade device. It undergoes rigorous screening including temperature cycling, steady-state life testing, and radiation hardness validation per Microsemi MicroNote 050, confirming suitability for Class S space and Class B military applications.
What is the maximum power dissipation rating for JANTXV1N4971DUS/TR?
JANTXV1N4971DUS/TR is rated for 5 W power dissipation at an end-cap temperature (TEC) of 140 °C. Power must be linearly derated above 140 °C, reaching zero at 175 °C, based on its 7 °C/W junction-to-end-cap thermal resistance - a value confirmed in the SD44A datasheet revision E.
Does JANTXV1N4971DUS/TR have radiation hardness certification?
Yes, JANTXV1N4971DUS/TR exhibits inherent radiation hardness up to 100 krad(Si) total ionizing dose (TID), as documented in Microsemi MicroNote 050. No additional shielding or derating is required for low-Earth orbit (LEO) satellite applications, and it maintains parametric stability post-irradiation.
What package type does JANTXV1N4971DUS/TR use?
JANTXV1N4971DUS/TR uses the hermetically sealed "E" package (also known as D-5B), featuring voidless hard glass construction, tungsten slugs, copper end caps with Sn/Pb finish, and cathode identification via a visible band. It is supplied in EIA-481-B compliant tape-and-reel format.
JANTXV1N4971DUS/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):
- 36 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 27.4 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
JANTXV1N4971DUS/TR FAQ
1.How can I place an order for JANTXV1N4971DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4971DUS/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 JANTXV1N4971DUS/TR reliable?
The price and inventory of JANTXV1N4971DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4971DUS/TR is usually 5 days.
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Once your JANTXV1N4971DUS/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 JANTXV1N4971DUS/TR?
For technical support, including JANTXV1N4971DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4971DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4971DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4971DUS/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 JANTXV1N4971DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4971DUS/TR?
All JANTXV1N4971DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4971DUS/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 JANTXV1N4971DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4971DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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