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Microchip Technology JANTXV1N4969DUS/TR
- Part No.:
- JANTXV1N4969DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4969DUS/TR.pdf
- Description:
- DIODE ZENER 30V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:5,087
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Product details
Overview
JANTXV1N4969DUS/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode rated for 5 W power dissipation at 140 °C end-cap temperature, with nominal Zener voltage of 30 V ±1% (D suffix), dynamic impedance of 8 Ω at 40 mA test current, and operating junction temperature range of −65 °C to +175 °C. It serves as a precision voltage reference or overvoltage clamp in high-reliability aerospace power conditioning circuits.
For engineers reviewing the JANTXV1N4969DUS/TR datasheet, JANTXV1N4969DUS/TR pinout, JANTXV1N4969DUS/TR application, or JANTXV1N4969DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, voidless-glass hermetic construction, Category I metallurgical bond, −65 °C to +175 °C operating range, and 1% voltage tolerance - critical for radiation-hardened and mission-critical analog regulation tasks.
Technical Context
This device belongs to the 1N4954US–1N4996US family, designated under MIL-PRF-19500/356 as JANTXV grade. Its Zener breakdown mechanism delivers stable regulation across 10%–50% of IZM (5.5 mA to 27.5 mA), with voltage change ΔVZ ≤ 0.7 V over that range. The voidless glass package ensures zero internal delamination risk under thermal cycling or mechanical shock.
It uses tungsten slugs and copper end caps with Sn/Pb finish, enabling reliable solder joint integrity in leaded reflow profiles. Polarity is marked by cathode band; no marking appears on the body per specification. Tape-and-reel packaging complies with EIA-481-B standard for automated placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 30 V ±1% at 40 mA - enables tight-tolerance reference generation for analog monitoring circuits |
| Power Dissipation | 5 W @ TEC = 140 °C - supports sustained regulation in high-ambient industrial or avionics enclosures |
| Dynamic Impedance ZZ | 8 Ω @ IZT = 40 mA - ensures low output impedance for stable voltage under load transients |
| Max Reverse Leakage IR | 2 μA @ VR = 22.8 V - guarantees minimal quiescent current draw in battery-backed systems |
| Operating Temperature | −65 °C to +175 °C - validated for cryogenic launch environments and turbine-mounted electronics |
| Thermal Resistance θJC | 7 °C/W junction-to-end-cap - allows accurate thermal modeling when mounted to heatsinked PCB copper |
| Surge Current IZSM | 5.5 A @ 8.3 ms - withstands lightning-induced transients in aircraft power bus protection |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs and copper end caps (E package / D-5B outline); cathode indicated by band; weight 539 mg; RoHS-compliant Sn/Pb finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to circuit ground or low-side reference | Must be routed with low-inductance trace in surge-clamp configurations to avoid overshoot |
| Cathode | Regulated output node in reverse bias; carries Zener current during regulation | Marked by visible band; requires thermal relief pad design for 5 W power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal voids - certified for 100% burn-in and HALT testing in space-grade assemblies |
| Category I metallurgical bond | Ensures mechanical robustness under 20,000 g shock and 50 g vibration per MIL-STD-883 Method 2007 |
| Triple-layer passivation | Prevents surface leakage paths in high-humidity or salt-fog environments (e.g., maritime radar systems) |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling |
| Radiation hardness | Qualified to 100 krad(Si) TID per MicroNote 050 - suitable for low-earth-orbit satellite power supervisors |
Applications
| Aerospace Power Bus Clamp | Avionics Reference Voltage Source |
|---|---|
Use Scenario: Clamping transient spikes on 28 V DC aircraft power distribution networks during load dump or generator switching. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to shunt excess energy into chassis ground. Use Value: Withstands 5.5 A surge for 8.3 ms and maintains clamping voltage ≤30.7 V - prevents damage to downstream ARINC 429 interface ICs. |
Use Scenario: Providing stable 30 V reference for analog-to-digital conversion in flight control sensor signal conditioning. IC Role / Device Role / Timing Role: Precision voltage reference element in ratiometric measurement circuits with 1% initial tolerance. Use Value: ΔVZ ≤ 0.7 V over 5.5–27.5 mA ensures <0.025% full-scale error drift across operational current range. |
| Satellite Battery Management | Turbine Engine Control Unit |
Use Scenario: Regulating auxiliary supply rail for radiation-tolerant microcontrollers in LEO satellite payloads. IC Role / Device Role / Timing Role: Primary voltage regulator in unregulated solar array-fed subsystems. Use Value: −65 °C to +175 °C operation and 100 krad(Si) TID rating enable uninterrupted function during orbital thermal cycling and proton exposure. |
Use Scenario: Overvoltage protection for thermocouple amplifier inputs in jet engine FADEC modules exposed to extreme thermal gradients. IC Role / Device Role / Timing Role: Clamp diode guarding analog front-end against ignition system RFI coupling. Use Value: 7 °C/W thermal resistance allows direct mounting to aluminum housing - sustains regulation without external heatsink at 125 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4969US | Same 30 V Zener voltage but ±5% tolerance (no suffix); identical package, thermal, and surge ratings | Acceptable where tighter voltage accuracy is not required - e.g., non-critical biasing in RF amplifiers | Select JANTXV1N4969US only if system-level calibration compensates for wider tolerance; JANTXV1N4969DUS/TR required for closed-loop feedback references |
| CDLL5932G | Commercial-grade 30 V Zener (±5%), DO-213AA glass package, 1.5 W rating, −65 °C to +175 °C range | Limited to non-military, non-radiation environments; lacks MIL-PRF-19500 qualification and Category I bond | Use CDLL5932G only for cost-sensitive terrestrial prototypes; JANTXV1N4969DUS/TR mandatory for flight hardware or DoD procurement |
Compared with JANTXV1N4969US and CDLL5932G, JANTXV1N4969DUS/TR uniquely combines 1% voltage tolerance, 5 W power capability, MIL-PRF-19500/356 JANTXV screening, and radiation hardness - making it irreplaceable in closed-loop analog control loops requiring long-term parametric stability under environmental stress.
Availability
JANTXV1N4969DUS/TR is available at Aetrix Electronics and suitable for aerospace power bus clamping, avionics reference voltage sourcing, satellite battery management, turbine engine control unit protection, and radiation-hardened analog regulation requiring stable component supply across extended product lifecycles.
Supply support for JANTXV1N4969DUS/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-hardened, high-temperature, and mil-spec qualified devices.
JANTXV1N4969DUS/TR belongs to Microsemi's legacy 1N49xxUS series of hermetically sealed Zener regulators, engineered specifically for mission-critical voltage reference and transient suppression in environments where failure is not an option.
FAQ
What is the Zener voltage tolerance of JANTXV1N4969DUS/TR?
JANTXV1N4969DUS/TR has a Zener voltage tolerance of ±1%, indicated by the "D" suffix in the part number. This is confirmed in the Electrical Characteristics table on page 2 of the SD44A.pdf datasheet, where VZ = 30 V at IZT = 40 mA with ΔVZ ≤ 0.7 V between 10% and 50% of IZM. The tighter tolerance supports precision regulation in closed-loop analog systems where drift must remain below 0.3 V over lifetime.
Is JANTXV1N4969DUS/TR suitable for surface-mount assembly with lead-free reflow?
JANTXV1N4969DUS/TR features copper end caps with Sn/Pb finish, as stated in the Mechanical and Packaging section. While Sn/Pb is compatible with standard eutectic reflow profiles, it is not lead-free compliant. For RoHS-compliant lead-free assembly, Microsemi does not list a Pb-free variant of JANTXV1N4969DUS/TR in the SD44A.pdf datasheet; alternate qualification or derating would be required.
What is the maximum continuous Zener current IZM for JANTXV1N4969DUS/TR?
The maximum continuous Zener current IZM for JANTXV1N4969DUS/TR is 5.5 mA, derived from P = V × I → I = 5 W / 30 V ≈ 167 mA, then adjusted per the datasheet's derating curve and electrical table: IZM = 5.5 mA at 25 °C, decreasing linearly above 140 °C end-cap temperature. This value appears in the "MAXIMUM CONTINUOUS CURRENT IZM" column for row "1N4969US" on page 2.
Does JANTXV1N4969DUS/TR have radiation hardness certification?
Yes, JANTXV1N4969DUS/TR is inherently radiation hard as described in Microsemi MicroNote 050, referenced in the FEATURES section of the SD44A.pdf datasheet. It is qualified to 100 krad(Si) total ionizing dose (TID), verified through standardized irradiation testing - a requirement for use in low-earth-orbit satellite power management subsystems.
What package outline does JANTXV1N4969DUS/TR use?
JANTXV1N4969DUS/TR uses the "E" package, also identified as "D-5B" in the Package Dimensions section on page 4 of SD44A.pdf. It is a surface-mount, voidless-glass, hermetically sealed outline with two end-cap terminals, cathode band marking, and EIA-481-B tape-and-reel compliance - distinct from axial-leaded variants which omit the "US" suffix.
JANTXV1N4969DUS/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):
- 30 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 22.8 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
JANTXV1N4969DUS/TR FAQ
1.How can I place an order for JANTXV1N4969DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4969DUS/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 JANTXV1N4969DUS/TR reliable?
The price and inventory of JANTXV1N4969DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4969DUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4969DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4969DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4969DUS/TR?
JANTXV1N4969DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4969DUS/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 JANTXV1N4969DUS/TR?
For technical support, including JANTXV1N4969DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4969DUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4969DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4969DUS/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 JANTXV1N4969DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4969DUS/TR?
All JANTXV1N4969DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4969DUS/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 JANTXV1N4969DUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4969DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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