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Microchip Technology JANTXV1N4965DUS/TR
- Part No.:
- JANTXV1N4965DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4965DUS/TR.pdf
- Description:
- DIODE ZENER 20V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,266
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Product details
Overview
JANTXV1N4965DUS/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 20 V ±5%, dynamic impedance of 4.5 Ω at 65 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 JANTXV1N4965DUS/TR datasheet, JANTXV1N4965DUS/TR pinout, JANTXV1N4965DUS/TR application, or JANTXV1N4965DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, hermetic glass package with tungsten slugs, Category I metallurgical bond, and −65 °C to +175 °C operational envelope for mission-critical systems.
Technical Context
This device belongs to the 1N4954US–1N4996US family of surface-mount Zener regulators, specifically configured for stable 20 V regulation under wide-current and wide-temperature conditions. Its voidless-glass hermetic seal and triple-layer passivation ensure immunity to moisture ingress and long-term parameter drift in harsh environments.
The JANTXV1N4965DUS/TR uses an internal Category I metallurgical bond and exhibits 4.5 Ω dynamic impedance at 65 mA, 1.5 V forward voltage at 1.0 A, and a temperature coefficient of +0.085 %/°C - enabling predictable voltage shift across its full −65 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V ±5% at 65 mA - defines regulated output voltage with tight tolerance suitable for reference-grade applications |
| Power Dissipation | 5 W @ TEC = 140 °C - maximum continuous power handling before thermal derating begins |
| Dynamic Impedance (ZZ) | 4.5 Ω @ IZT = 65 mA - low AC impedance ensures minimal output voltage variation under load transients |
| Max Reverse Leakage | 2 μA @ 15.2 V - ultra-low leakage preserves regulation accuracy in high-impedance bias networks |
| Operating Temperature | −65 °C to +175 °C - enables deployment in space, downhole, and jet engine control electronics |
| Thermal Resistance | 7 °C/W junction-to-end-cap - supports efficient heat transfer to PCB copper or heatsink interface |
| Surge Current (8.3 ms) | 8.0 A - withstands short-duration overvoltage events without degradation |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs, "E" outline (also designated D-5B), surface-mount configuration. Terminations are copper end caps with Sn/Pb finish; cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during regulation; carries full Zener current in reverse-biased operation |
| Cathode | Zener breakdown terminal | Marked with band; connected to higher-potential node; establishes regulated voltage at cathode relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates internal voids to prevent moisture-induced parametric shift and catastrophic failure in vacuum or humid environments |
| Category I metallurgical bond | Ensures mechanical integrity and thermal stability of the semiconductor junction under extreme thermal cycling |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special handling required during assembly or field service |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for low-dose space applications without shielding |
| Triple-layer passivation | Provides robust surface protection against contamination, corrosion, and ion migration in high-humidity or salt-fog conditions |
Applications
| Aerospace Power Bus Regulation | Downhole Instrumentation Reference |
|---|---|
Use Scenario: Stabilizing 28 V DC bus voltage in satellite power distribution units exposed to thermal vacuum and radiation. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator and overvoltage clamp. Use Value: Maintains 20 V reference within ±5% across −65 °C to +175 °C while surviving 8.0 A surge events and 100 krad(Si) total ionizing dose. |
Use Scenario: Providing stable bias voltage for pressure transducers in oil/gas well logging tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end signal conditioning circuitry. Use Value: Delivers <2 μA leakage at 15.2 V and 175 °C, ensuring measurement accuracy unaffected by thermal drift or humidity ingress. |
| Military Avionics Overvoltage Protection | Nuclear Reactor Control Interface |
Use Scenario: Clamping transient spikes on 270 V DC aircraft power lines during load dump or lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing 8.0 A 8.3 ms surge energy. Use Value: Survives repeated 8.0 A surges without parameter shift due to hermetic construction and tungsten slug thermal mass. |
Use Scenario: Generating calibrated reference voltages for safety-critical reactor coolant level sensors in containment buildings. IC Role / Device Role / Timing Role: Radiation-hardened voltage reference element in redundant analog monitoring chains. Use Value: Operates reliably at −65 °C to +175 °C with inherent radiation tolerance per MicroNote 050, eliminating need for external shielding or derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4964DUS/TR | 18 V ±5% Zener voltage, 4.0 Ω dynamic impedance at 65 mA, +0.085 %/°C tempco | Used where 18 V regulation is required instead of 20 V; identical package, thermal, and reliability specs | Select when system architecture requires 18 V reference point with same ruggedness and environmental rating |
| JANTXV1N4966DUS/TR | 22 V ±5% Zener voltage, 5.0 Ω dynamic impedance at 50 mA, +0.085 %/°C tempco | Used where 22 V regulation is required; slightly higher ZZ and lower IZT than JANTXV1N4965DUS/TR | Choose for 22 V rail stabilization where marginally higher impedance is acceptable and same hermetic reliability is mandatory |
Compared with JANTXV1N4964DUS/TR and JANTXV1N4966DUS/TR, the JANTXV1N4965DUS/TR provides optimal 20 V regulation with lowest dynamic impedance (4.5 Ω) in the 18–22 V segment, making it preferred for high-stability reference designs requiring minimal voltage deviation under varying load.
Availability
JANTXV1N4965DUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, downhole instrumentation, and military avionics requiring stable component supply with guaranteed MIL-PRF-19500/356 compliance and traceable lot history.
Supply support for JANTXV1N4965DUS/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 defense, aerospace, and industrial markets.
The JANTXV1N4965DUS/TR belongs to Microsemi's military-qualified Zener regulator product line, engineered for fail-safe voltage reference and overvoltage protection in mission-critical systems where parameter stability and hermetic integrity are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTXV1N4965DUS/TR?
The JANTXV1N4965DUS/TR has a nominal Zener voltage of 20 V with a standard tolerance of ±5%, as specified in the Microsemi SD44A datasheet. This tolerance applies at 25 °C and 65 mA test current, and is maintained across the full −65 °C to +175 °C operating range per MIL-PRF-19500/356 requirements. The "D" suffix confirms ±5% tolerance per Microsemi's part numbering convention.
Is JANTXV1N4965DUS/TR hermetically sealed?
Yes, the JANTXV1N4965DUS/TR features a voidless hermetically sealed hard glass package with internal tungsten slugs and Category I metallurgical bonding. This construction meets MIL-PRF-19500/356 requirements for high-reliability applications, preventing moisture ingress and ensuring long-term parameter stability in vacuum, high-humidity, or corrosive environments.
What is the maximum continuous Zener current for JANTXV1N4965DUS/TR?
The maximum continuous Zener current (IZM) for JANTXV1N4965DUS/TR is 395 mA at 25 °C, derived from its 5 W power rating and 20 V Zener voltage (P = V × I). At elevated temperatures, this value decreases linearly with thermal derating - reaching zero at +175 °C - based on its 7 °C/W junction-to-end-cap thermal resistance.
Does JANTXV1N4965DUS/TR have radiation hardness certification?
Yes, the JANTXV1N4965DUS/TR is inherently radiation-hardened per Microsemi MicroNote 050, which documents its performance under total ionizing dose (TID) exposure. It is qualified for use in low-dose space applications without additional shielding, leveraging its hermetic glass package and silicon process to mitigate displacement damage and charge trapping effects.
What packaging format does JANTXV1N4965DUS/TR ship in?
JANTXV1N4965DUS/TR ships in tape-and-reel format compliant with EIA-481-B standards, optimized for automated SMT placement. Each reel contains devices oriented with cathode band consistently positioned for optical recognition, and the package outline conforms to the "E" (D-5B) footprint with 0.080″ center adhesive pad option for enhanced mechanical retention on high-vibration PCBs.
JANTXV1N4965DUS/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):
- 20 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 4.5 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 15.2 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
JANTXV1N4965DUS/TR FAQ
1.How can I place an order for JANTXV1N4965DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4965DUS/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 JANTXV1N4965DUS/TR reliable?
The price and inventory of JANTXV1N4965DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4965DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4965DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4965DUS/TR transactions.
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4.How is shipping managed for JANTXV1N4965DUS/TR?
JANTXV1N4965DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4965DUS/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 JANTXV1N4965DUS/TR?
For technical support, including JANTXV1N4965DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4965DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4965DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4965DUS/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 JANTXV1N4965DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4965DUS/TR?
All JANTXV1N4965DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4965DUS/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 JANTXV1N4965DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4965DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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