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Microchip Technology JANTXV1N4968DUS/TR
- Part No.:
- JANTXV1N4968DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4968DUS/TR.pdf
- Description:
- DIODE ZENER 27V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:6,335
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Product details
Overview
JANTXV1N4968DUS/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode rated for 5 W power dissipation, with a nominal Zener voltage of 27 V at 50 mA test current, ±5% tolerance, and maximum dynamic impedance of 6.0 Ω at IZT - used for precision voltage regulation in high-reliability aerospace power conditioning circuits.
For engineers reviewing the JANTXV1N4968DUS/TR datasheet, JANTXV1N4968DUS/TR pinout, JANTXV1N4968DUS/TR application, or JANTXV1N4968DUS/TR equivalent, this part delivers verified radiation-hardened performance, -65°C to +175°C operating range, voidless-glass construction, and Category III metallurgical bonding per MIL-PRF-19500/356.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, maintaining stable output across 10–50% of IZM (6.0 A) with ΔVZ ≤ 0.5 V regulation error. Its thermal resistance is 10°C/W junction-to-end-cap, enabling reliable 5 W operation up to 125°C case temperature before linear derating to zero at 175°C.
The JANTXV1N4968DUS/TR uses a hard-glass "E" package (D-5B) with tungsten slugs and copper end caps finished in Sn/Pb, cathode marked by band, and polarity-critical mounting. It exhibits inherent ESD immunity per MIL-STD-750 Method 1020 and radiation hardness per MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27 V ±5% at 50 mA - sets regulated rail voltage with tight production consistency for mission-critical analog references. |
| Power Dissipation | 5 W @ TEC = 125°C - supports sustained regulation in high-temperature avionics enclosures without forced cooling. |
| Dynamic Impedance ZZ | 6.0 Ω @ IZT - ensures minimal output voltage shift under load transients in feedback-sensing applications. |
| Max Reverse Leakage IR | 2 μA @ VR = 20.6 V - guarantees low quiescent current draw in battery-backed or low-power standby circuits. |
| Operating Temperature | -65°C to +175°C - enables deployment in jet engine bays, space payload electronics, and downhole drilling systems. |
| Surge Current IZSM | 18.7 A @ 8.3 ms - withstands lightning-induced transients and inductive switching spikes without degradation. |
| Forward Voltage VF | 1.50 V @ 1.0 A - defines forward conduction loss during fault conditions or bidirectional clamp configurations. |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with copper end caps (Sn/Pb finish), tungsten internal slugs, and 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 topology. | Must be routed to lowest-impedance ground plane to minimize noise coupling into regulation node. |
| Cathode | Current exit terminal in reverse bias; connected to unregulated input rail in shunt configuration. | Band-marked end - polarity reversal causes catastrophic failure; requires strict assembly verification. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and long-term parameter drift in humid or vacuum environments (e.g., satellite payloads). |
| Category III metallurgical bond | Ensures mechanical integrity under extreme shock/vibration (20 g RMS, 10–2000 Hz) per MIL-STD-883. |
| Nonsensitive to ESD | Withstands ≥4 kV HBM without parameter shift - removes need for external ESD protection in board layout. |
| Radiation hardness | Qualified to 100 krad(Si) TID per MicroNote 050 - suitable for low-earth orbit and nuclear instrumentation. |
| MIL-PRF-19500/356 qualification | Meets screening requirements for JAN, JANTX, JANTXV, and JANS levels - enables use in DoD-critical systems. |
Applications
| Aerospace Power Bus Regulation | Downhole Instrumentation Reference |
|---|---|
|
Use Scenario: Stabilizing 28 V DC bus in satellite power distribution units exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precise 27 V reference for ADC biasing and sensor excitation. Use Value: Maintains ±0.5 V regulation over -65°C to +175°C and 10–50% IZM load range, ensuring data integrity across orbital phases. |
Use Scenario: Providing stable bias voltage for piezoelectric pressure sensors in oil/gas well logging tools. IC Role / Device Role / Timing Role: Primary voltage reference in high-temperature (>150°C) analog front-end signal conditioning. Use Value: Zero parameter drift due to voidless-glass hermeticity prevents calibration drift during 72-hour downhole runs. |
| Military Radar Bias Supply | Nuclear Reactor Monitoring |
|
Use Scenario: Regulating gate bias for GaN RF power amplifiers in airborne radar transmitters. IC Role / Device Role / Timing Role: Transient-suppressing shunt regulator absorbing switching noise and EMI from pulsed RF stages. Use Value: 18.7 A surge rating and 6.0 Ω dynamic impedance prevent voltage overshoot during 100 ns RF pulses. |
Use Scenario: Generating reference voltage for neutron flux detectors in reactor control rod position systems. IC Role / Device Role / Timing Role: Radiation-hardened voltage reference ensuring fail-safe shutdown logic accuracy. Use Value: Validated 100 krad(Si) TID tolerance maintains regulation stability during decades-long reactor operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4968US | No /TR suffix - bulk packaging instead of tape-and-reel; identical electrical specs and qualification level. | Preferred for prototyping or low-volume hand-soldered assemblies where reel handling is unnecessary. | Select JANTXV1N4968US when automated pick-and-place is not required and cost-per-unit is prioritized. |
| 1N4968US | Commercial-grade (non-military) version - lacks MIL-PRF-19500/356 screening, no radiation or ESD validation. | Suitable only for benign-environment industrial controls, not aerospace, defense, or nuclear applications. | Choose 1N4968US only for non-critical commercial designs where full JANTXV qualification is not mandated. |
Compared with JANTXV1N4968US and 1N4968US, the JANTXV1N4968DUS/TR provides guaranteed tape-and-reel delivery for SMT lines, full military screening, and radiation assurance - making it the sole option for flight-critical or safety-certified systems requiring traceable, qualified components.
Availability
JANTXV1N4968DUS/TR is available at Aetrix Electronics and suitable for aerospace power regulation, downhole instrumentation, military radar biasing, and nuclear monitoring applications requiring stable component supply under extended temperature and radiation stress.
Supply support for JANTXV1N4968DUS/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 aerospace, defense, and industrial markets.
The JANTXV1N4968DUS/TR belongs to Microsemi's military-qualified Zener diode family designed specifically for voltage regulation in mission-critical systems where failure is not an option - emphasizing hermeticity, radiation tolerance, and extreme temperature resilience.
FAQ
What is the Zener voltage tolerance for JANTXV1N4968DUS/TR?
The JANTXV1N4968DUS/TR has a nominal Zener voltage of 27 V with a standard tolerance of ±5%, as defined in the MIL-PRF-19500/356 specification. This tolerance applies at the specified test current of 50 mA and ambient temperature of 25°C. No tighter tolerance suffix (e.g., "C" for ±2% or "D" for ±1%) is present in the part number, confirming the ±5% grade.
Does JANTXV1N4968DUS/TR require heatsinking in 5 W operation?
JANTXV1N4968DUS/TR is rated for 5 W dissipation only at a case temperature (TEC) of 125°C, with linear derating to zero at 175°C. At room temperature, its thermal resistance is 10°C/W junction-to-end-cap, meaning ~50°C rise at full load - so heatsinking is recommended for continuous 5 W operation above 75°C ambient. PCB copper area and thermal vias significantly improve performance.
Is JANTXV1N4968DUS/TR compatible with lead-free reflow processes?
JANTXV1N4968DUS/TR features Sn/Pb-finished copper end caps and is qualified for traditional eutectic solder reflow. It is not rated for Pb-free reflow profiles (e.g., SAC305 peak >245°C), as the glass-to-metal seal and internal metallurgy were validated under Sn/Pb thermal cycles. Use only with Sn63/Pb37 or equivalent pastes and profiles.
What does the "DUS" suffix indicate in JANTXV1N4968DUS/TR?
In JANTXV1N4968DUS/TR, "DUS" denotes the "D-5B" package variant (hermetically sealed voidless glass surface-mount), while "TR" indicates tape-and-reel packaging per EIA-481-B. The "JANTXV" prefix confirms compliance with the highest military screening level (including burn-in, temperature cycling, and radiation testing) per MIL-PRF-19500/356.
Can JANTXV1N4968DUS/TR replace axial-leaded 1N4968 in existing designs?
No - JANTXV1N4968DUS/TR uses the surface-mount "E" (D-5B) package, whereas axial-leaded equivalents (e.g., JANTXV1N4968) use DO-41 or DO-204AL packages. Mechanical footprint, thermal path, and assembly process differ fundamentally. A redesign of pad layout, thermal relief, and reflow profile is required for migration.
JANTXV1N4968DUS/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):
- 27 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 20.6 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
JANTXV1N4968DUS/TR FAQ
1.How can I place an order for JANTXV1N4968DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4968DUS/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 JANTXV1N4968DUS/TR reliable?
The price and inventory of JANTXV1N4968DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4968DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4968DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4968DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4968DUS/TR?
JANTXV1N4968DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4968DUS/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 JANTXV1N4968DUS/TR?
For technical support, including JANTXV1N4968DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4968DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4968DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4968DUS/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 JANTXV1N4968DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4968DUS/TR?
All JANTXV1N4968DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4968DUS/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 JANTXV1N4968DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4968DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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