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Microchip Technology JANTXV1N4955CUS/TR
- Part No.:
- JANTXV1N4955CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4955CUS/TR.pdf
- Description:
- DIODE ZENER 7.5V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:3,672
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Product details
Overview
JANTXV1N4955CUS/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 6.2 V at 220 mA test current, ±2% tolerance (C suffix), and maximum dynamic impedance of 1.0 Ω at IZT - used in precision voltage regulation for avionics power conditioning and radiation-hardened sensor interfaces.
For engineers reviewing the JANTXV1N4955CUS/TR datasheet, JANTXV1N4955CUS/TR pinout, JANTXV1N4955CUS/TR application, or JANTXV1N4955CUS/TR equivalent, this part delivers verified high-reliability voltage clamping across -65°C to +175°C, meets MIL-PRF-19500/356 Class V requirements, and supports design assurance in space-qualified power supplies and defense-grade analog front-ends.
Technical Context
This Zener regulator operates in reverse breakdown with metallurgically bonded tungsten slugs and triple-layer passivation, enabling stable voltage reference behavior under extreme thermal cycling and ionizing radiation exposure. Its voidless glass package ensures zero internal delamination risk during thermal shock or long-term storage.
The device exhibits low temperature coefficient (±0.04%/°C), tight regulation (ΔVZ ≤ 1.0 V between 10%–50% IZM), and robust surge capability (20 A @ 8.3 ms), making it suitable for transient suppression in high-integrity DC rails where failure modes must be eliminated.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±2% at 220 mA - defines precise regulation point for 5 V–6.5 V system rails |
| Power Dissipation | 5 W @ TEC = 125°C - enables sustained operation in conduction-cooled military enclosures |
| Dynamic Impedance (ZZ) | 1.0 Ω at IZT - ensures minimal output voltage shift under load transients |
| Max Reverse Leakage (IR) | 1000 μA at 4.74 V - guarantees low quiescent current in standby mode |
| Temp Coefficient (αVZ) | ±0.04%/°C - supports stable reference over full -65°C to +175°C operating range |
| Surge Current (IZSM) | 20 A @ 8.3 ms - withstands lightning-induced surges per MIL-STD-461 CS115 |
| Forward Voltage (VF) | 1.50 V @ 1.0 A - allows use as polarity-protected clamp in bidirectional protection schemes |
Pinout & Package
Hermetically sealed "E" package (also designated D-5B), featuring two axial end-cap terminals with cathode band marking; copper end caps with Sn/Pb finish; weight 539 mg; tape-and-reel compliant per EIA-481-B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink in forward bias; reference ground node in Zener configuration | Connected to system ground or low-side return path for stable biasing |
| Cathode | Regulated output node in reverse breakdown | Supplies stabilized 6.2 V to critical analog circuitry; marked by visible band |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal corrosion - validated for 20+ year shelf life in sealed modules |
| Category I metallurgical bond | Ensures mechanical integrity under 100 g shock and 20 g vibration per MIL-STD-810G |
| Nonsensitive to ESD | Withstands ≥4 kV HBM without parameter shift - no external ESD protection required |
| Radiation hardness | Qualified to 100 krad(Si) TID per MicroNote 050 - suitable for LEO satellite power systems |
| MIL-PRF-19500/356 JANTXV grade | Includes lot traceability, 100% screening, and extended burn-in - required for DoD Class V programs |
Applications
| Aerospace Power Regulation | Defense Radar Bias Supply |
|---|---|
Use Scenario: Regulating auxiliary 6.2 V rail for ADC reference and op-amp bias in satellite telemetry units. IC Role / Device Role / Timing Role: Precision voltage reference and overvoltage clamp protecting downstream analog ICs. Use Value: Maintains ±0.124 V regulation window over -55°C to +125°C, preventing ADC gain drift and offset errors. |
Use Scenario: Stabilizing local bias for GaN MMIC driver stages in phased-array radar transceivers. IC Role / Device Role / Timing Role: Low-impedance Zener shunt regulating supply to RF amplifier bias networks. Use Value: 1.0 Ω dynamic impedance minimizes noise coupling into sensitive RF bias lines during pulsed operation. |
| Nuclear Instrumentation | High-Reliability Industrial Control |
Use Scenario: Providing radiation-tolerant reference for neutron detector pulse-height analyzers in reactor monitoring systems. IC Role / Device Role / Timing Role: Radiation-hardened voltage clamp ensuring consistent comparator thresholds under neutron flux. Use Value: 100 krad(Si) TID tolerance prevents parametric degradation during 10+ year deployment in containment zones. |
Use Scenario: Protecting PLC I/O module input conditioning circuits against field-wiring transients in oil refinery control cabinets. IC Role / Device Role / Timing Role: High-energy surge suppressor clamping induced spikes on 24 V DC sensor lines. Use Value: 20 A 8.3 ms surge rating absorbs IEC 61000-4-5 Level 4 surges without degradation or leakage increase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4955US/TR | Same 6.2 V rating but ±5% tolerance (no suffix); higher ZZ = 1.0 Ω vs. 1.0 Ω (identical), same surge rating | Acceptable where tighter regulation not required; lower cost; less stringent screening than JANTXV grade | Select JANTXV1N4955US/TR only when ±5% tolerance suffices and full JANTXV screening is unnecessary |
| 1N4955US | Commercial-grade version; no MIL-PRF-19500 qualification; TJ = -65°C to +175°C retained; same electrical specs | Not approved for flight hardware or safety-critical systems; lacks radiation hardness documentation and lot traceability | Use 1N4955US only in non-mission-critical industrial prototypes or ground-test fixtures |
Compared with JANTXV1N4955CUS/TR, JANTXV1N4955US/TR offers identical voltage and surge performance but relaxes tolerance and screening, while 1N4955US removes all military qualifications - making the C-suffix JANTXV variant the sole choice for radiation-tolerant, fully screened aerospace deployments.
Availability
JANTXV1N4955CUS/TR is available at Aetrix Electronics and suitable for aerospace power regulation, defense radar bias supply, and nuclear instrumentation requiring stable component supply with full MIL-PRF-19500/356 traceability and radiation hardness validation.
Supply support for JANTXV1N4955CUS/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 aerospace, defense, and industrial markets, with emphasis on radiation-hardened and hermetically sealed components.
JANTXV1N4955CUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356 qualified Zener series, engineered specifically for voltage regulation in mission-critical systems where zero-failure operation over extreme temperature and radiation environments is mandatory.
FAQ
What is the Zener voltage tolerance of JANTXV1N4955CUS/TR?
JANTXV1N4955CUS/TR has a nominal Zener voltage of 6.2 V with ±2% tolerance, indicated by the "C" suffix per Microsemi's standard coding. This tighter tolerance ensures regulation stability within ±0.124 V across production lots, critical for precision analog subsystems in avionics and medical devices. The JANTXV1N4955CUS/TR specification is verified per MIL-PRF-19500/356 screening.
Does JANTXV1N4955CUS/TR meet MIL-PRF-19500/356 requirements?
Yes, JANTXV1N4955CUS/TR is fully qualified to MIL-PRF-19500/356 Class V, including 100% lot testing, extended burn-in, and radiation hardness validation per MicroNote 050. It carries JANTXV grade designation, confirming compliance with military screening, traceability, and environmental stress requirements - essential for DoD and NASA programs. JANTXV1N4955CUS/TR documentation includes full test reports.
What is the maximum continuous Zener current for JANTXV1N4955CUS/TR?
The maximum continuous Zener current (IZM) for JANTXV1N4955CUS/TR is 765 mA at 25°C ambient, derating linearly above 125°C case temperature to zero at 175°C. This value is derived from its 5 W power rating and 6.2 V Zener voltage, supporting sustained regulation in conduction-cooled chassis. JANTXV1N4955CUS/TR maintains regulation integrity up to this limit under specified thermal conditions.
Is JANTXV1N4955CUS/TR radiation-hardened?
Yes, JANTXV1N4955CUS/TR is inherently radiation-hardened to 100 krad(Si) total ionizing dose (TID), as documented in Microsemi MicroNote 050. Its voidless glass construction and Category I metallurgical bonds prevent parametric shift under gamma irradiation - making it suitable for low-Earth orbit satellite power systems and nuclear facility instrumentation. JANTXV1N4955CUS/TR radiation data is included in official qualification reports.
What package type does JANTXV1N4955CUS/TR use?
JANTXV1N4955CUS/TR uses the hermetically sealed "E" package (also known as D-5B), featuring tungsten slugs, copper end caps with Sn/Pb finish, and cathode band marking. It is surface-mount compatible, tape-and-reel packaged per EIA-481-B, and weighs 539 mg. This package ensures zero moisture ingress and mechanical robustness under thermal shock - confirmed in JANTXV1N4955CUS/TR qualification testing.
JANTXV1N4955CUS/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):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 1.5 Ohms
- Current - Reverse Leakage @ Vr:
- 100 µA @ 5.7 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
JANTXV1N4955CUS/TR FAQ
1.How can I place an order for JANTXV1N4955CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4955CUS/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 JANTXV1N4955CUS/TR reliable?
The price and inventory of JANTXV1N4955CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4955CUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4955CUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4955CUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4955CUS/TR?
JANTXV1N4955CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4955CUS/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 JANTXV1N4955CUS/TR?
For technical support, including JANTXV1N4955CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4955CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4955CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4955CUS/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 JANTXV1N4955CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4955CUS/TR?
All JANTXV1N4955CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4955CUS/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 JANTXV1N4955CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4955CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4955CUS/TR Tags
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