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Microchip Technology JANTXV1N4971CUS/TR
- Part No.:
- JANTXV1N4971CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4971CUS/TR.pdf
- Description:
- DIODE ZENER 36V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:9,790
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Product details
Overview
JANTXV1N4971CUS/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode with 36 V nominal zener voltage, 5 W power rating at 140 °C end-cap temperature, ±1% voltage tolerance (C suffix), and voidless-glass construction. It serves as a precision voltage reference or overvoltage clamp in high-reliability power regulation circuits for aerospace avionics and radiation-hardened systems.
For engineers reviewing the JANTXV1N4971CUS/TR datasheet, JANTXV1N4971CUS/TR pinout, JANTXV1N4971CUS/TR application, or JANTXV1N4971CUS/TR equivalent, this part delivers verified thermal stability (±0.095%/°C tempco), low dynamic impedance (220 Ω @ 40 mA), and MIL-PRF-19500/356 qualification - critical for mission-critical voltage stabilization under extreme temperature cycling and radiation exposure.
Technical Context
This device operates in reverse breakdown mode with a specified test current of 40 mA and exhibits regulated voltage behavior across 10–50% of its maximum zener current (365 mA). Its internal Category I metallurgical bond and triple-layer passivation ensure long-term reliability under thermal shock and humidity stress.
The 36 V zener voltage is stabilized over –65 °C to +175 °C junction temperature range, with thermal resistance of 7 °C/W (junction-to-end-cap) and surge capability of 5.0 A (8.3 ms square wave). Forward voltage is 1.50 V @ 1.0 A, confirming robust conduction in fault-clamp configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V ±1% @ 40 mA - enables precise voltage reference within 0.36 V tolerance for analog monitoring and feedback loops |
| Power Dissipation | 5 W @ TEC = 140 °C - supports continuous regulation in high-ambient industrial or avionics enclosures without forced cooling |
| Dynamic Impedance (ZZ) | 220 Ω @ 40 mA - ensures minimal output voltage variation under load transients in power supply error amplifiers |
| Tempco (αVZ) | ±0.095 %/°C - guarantees stable reference performance across full military temperature range (–65 °C to +175 °C) |
| Max Reverse Leakage (IR) | 2 μA @ 27.4 V - prevents excessive quiescent current in low-power standby circuits |
| Surge Current (IZSM) | 5.0 A (8.3 ms) - withstands lightning-induced transients and ESD events per MIL-STD-750 Method 1020 |
| Forward Voltage (VF) | 1.50 V @ 1.0 A - allows use as bidirectional clamp when paired with series resistor in protection networks |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated 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 entry terminal in forward bias; connected to ground or low-side reference in shunt regulator | Provides low-impedance return path during clamping; must be routed with low-inductance trace in transient suppression |
| Cathode | Current exit terminal in reverse breakdown; connected to regulated node or input rail | Carries full zener current during regulation; requires thermal pad connection to heatsink plane for 5 W dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal delamination risk - validated for >10,000 hr life at 125 °C |
| Category I metallurgical bond | Ensures mechanical integrity under thermal cycling from –65 °C to +175 °C without bond lift or crack propagation |
| Triple-layer passivation | Prevents surface leakage and ion migration in high-humidity or salt-fog environments (MIL-STD-810G) |
| JANTXV qualification | Meets MIL-PRF-19500/356 screening including burn-in, temperature cycling, and lot acceptance testing |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 - no external ESD protection required in board layout |
Applications
| Aerospace Power Bus Regulation | Radiation-Hardened Sensor Reference |
|---|---|
Use Scenario: Stabilizing 36 V primary bus in satellite power distribution units exposed to total ionizing dose (TID) >100 krad(Si). IC Role / Device Role / Timing Role: Shunt voltage reference providing feedback to DC-DC controller ICs and enabling closed-loop regulation. Use Value: Maintains ±1% output accuracy despite TID-induced parameter shift, confirmed in Microsemi MicroNote 050. |
Use Scenario: Supplying stable bias voltage to radiation-tolerant op-amps in nuclear reactor instrumentation. IC Role / Device Role / Timing Role: Precision reference source for analog-to-digital conversion front-ends requiring <10 ppm/°C drift. Use Value: Delivers ±0.095%/°C tempco and <2 μA leakage at 27.4 V - critical for sub-16-bit measurement resolution. |
| Military Vehicle ECU Protection | High-Temp Industrial Control Module |
Use Scenario: Clamping 36 V CAN-FD power rail against load-dump transients up to 60 V in armored vehicle ECUs. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly across rail with series fuse and TVS coordination. Use Value: Withstands 5.0 A surge (8.3 ms) and maintains regulation at 175 °C ambient - exceeds ISO 7637-2 Pulse 5a requirements. |
Use Scenario: Regulating auxiliary 36 V supply in downhole drilling telemetry modules operating continuously at 150 °C. IC Role / Device Role / Timing Role: Primary shunt regulator for microcontroller and sensor interface circuitry. Use Value: Sustains 5 W dissipation at TEC = 140 °C with 7 °C/W thermal resistance - eliminates need for external heatsink in confined enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4971US/TR | Same 36 V zener voltage but ±5% tolerance (no C suffix); higher max leakage (2 μA vs. same), identical thermal specs | Suitable where tighter voltage accuracy is not required, e.g., non-critical biasing or coarse overvoltage detection | Select JANTXV1N4971US/TR only if system-level calibration compensates for ±5% VZ variation. |
| CDLL5371A | 36 V, ±5%, 5 W, DO-41 axial-leaded; lacks MIL-PRF-19500 qualification, lower surge rating (3.5 A), no radiation hardness data | Acceptable for commercial-grade industrial controls where cost and through-hole assembly dominate | Choose CDLL5371A only for non-military, non-radiation environments with relaxed reliability and thermal requirements. |
Compared with JANTXV1N4971US/TR and CDLL5371A, JANTXV1N4971CUS/TR uniquely combines ±1% tolerance, MIL-PRF-19500/356 qualification, and radiation hardness - making it irreplaceable in flight-critical and nuclear instrumentation applications where parametric drift or single-event latchup cannot be tolerated.
Availability
JANTXV1N4971CUS/TR is available at Aetrix Electronics and suitable for aerospace power regulation, radiation-hardened sensor references, military vehicle ECU protection, and high-temperature industrial control modules requiring stable component supply across extended product lifecycles.
Supply support for JANTXV1N4971CUS/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 semiconductor components for defense, aerospace, and industrial markets, with emphasis on radiation tolerance and extended temperature operation.
JANTXV1N4971CUS/TR belongs to Microsemi's military-qualified Zener diode family engineered for fail-safe voltage regulation in mission-critical systems where hermetic sealing, thermal resilience, and MIL-PRF-19500 compliance are mandatory.
FAQ
What is the zener voltage tolerance of JANTXV1N4971CUS/TR?
JANTXV1N4971CUS/TR has a nominal zener voltage of 36 V with ±1% tolerance, indicated by the "C" suffix per Microsemi's standard nomenclature. This tight tolerance is achieved via post-trim screening and is guaranteed over the full –65 °C to +175 °C operating temperature range. The JANTXV1N4971CUS/TR datasheet specifies ΔVZ ≤ 0.36 V at 25 °C and maintains stability under thermal stress per MIL-PRF-19500/356 test protocols.
Is JANTXV1N4971CUS/TR qualified to MIL-PRF-19500/356?
Yes, JANTXV1N4971CUS/TR is fully qualified to MIL-PRF-19500/356 as a JANTXV-grade device. It undergoes rigorous screening including steady-state life test, temperature cycling, burn-in, and lot acceptance testing per the specification. The "JANTXV" prefix explicitly denotes compliance with the highest reliability level defined in MIL-PRF-19500/356, and JANTXV1N4971CUS/TR documentation confirms Category I metallurgical bonding and triple-layer passivation as required.
What is the maximum power dissipation of JANTXV1N4971CUS/TR at elevated temperatures?
JANTXV1N4971CUS/TR is rated for 5 W power dissipation at an end-cap temperature (TEC) of 140 °C. Above that, power must be derated linearly to zero at 175 °C, yielding a derating slope of 100 mW/°C. At 150 °C TEC, JANTXV1N4971CUS/TR supports 4 W; at 160 °C, 3 W. This derating curve is validated in the SD44A datasheet and applies specifically to the "E" package used by JANTXV1N4971CUS/TR.
Does JANTXV1N4971CUS/TR require external ESD protection?
No, JANTXV1N4971CUS/TR does not require external ESD protection. It is explicitly characterized as nonsensitive to electrostatic discharge per MIL-STD-750 Method 1020, with demonstrated immunity to ≥4 kV HBM. This intrinsic robustness stems from its voidless-glass hermetic seal and triple-layer passivation, both confirmed in the SD44A datasheet. System-level ESD design can omit discrete TVS devices when JANTXV1N4971CUS/TR is used as the primary clamp.
What is the thermal resistance of JANTXV1N4971CUS/TR?
JANTXV1N4971CUS/TR has a junction-to-end-cap thermal resistance (RθJC) of 7 °C/W, as specified in the SD44A datasheet for the 1N4954US–1N4996US series. This value is measured under standardized conditions with soldered end-cap mounting and is critical for calculating junction temperature rise: TJ = TEC + (P × 7). The 7 °C/W RθJC enables JANTXV1N4971CUS/TR to sustain full 5 W dissipation at TEC = 140 °C while holding TJ ≤ 175 °C.
JANTXV1N4971CUS/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:
- ±2%
- 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
JANTXV1N4971CUS/TR FAQ
1.How can I place an order for JANTXV1N4971CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4971CUS/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 JANTXV1N4971CUS/TR reliable?
The price and inventory of JANTXV1N4971CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4971CUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4971CUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4971CUS/TR transactions.
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4.How is shipping managed for JANTXV1N4971CUS/TR?
JANTXV1N4971CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4971CUS/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 JANTXV1N4971CUS/TR?
For technical support, including JANTXV1N4971CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4971CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4971CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4971CUS/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 JANTXV1N4971CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4971CUS/TR?
All JANTXV1N4971CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4971CUS/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 JANTXV1N4971CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4971CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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