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Microchip Technology JANTXV1N4969CUS/TR
- Part No.:
- JANTXV1N4969CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTXV1N4969CUS/TR.pdf
- Description:
- DIODE ZENER 30V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,023
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Product details
Overview
JANTXV1N4969CUS/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. It provides precise 30 V nominal Zener voltage with ±2% tolerance (C suffix), 8 Ω dynamic impedance at 40 mA test current, and operates across –65 °C to +175 °C junction temperature range. It serves as a high-reliability voltage reference or regulation element in avionics power conditioning circuits.
For engineers reviewing the JANTXV1N4969CUS/TR datasheet, JANTXV1N4969CUS/TR pinout, JANTXV1N4969CUS/TR application, or JANTXV1N4969CUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, hermetic glass package, 30 V ±2% regulation stability, and suitability for radiation-hardened, high-temperature, fail-safe systems where leakage <2 μA at 22.8 V and thermal resistance of 7 °C/W are critical.
Technical Context
This device belongs to the 1N4954US–1N4996US family, fabricated using voidless hard-glass hermetic construction with internal Category I metallurgical bonds and triple-layer passivation. Its Zener breakdown mechanism delivers stable regulation over wide current (10%–50% IZM) and temperature ranges, with voltage change ΔVZ ≤0.25 V under specified load variation.
The JANTXV1N4969CUS/TR exhibits low dynamic impedance (8 Ω @ 40 mA), tight temperature coefficient (+0.090 %/°C), and robust surge capability (16.4 A @ 8.3 ms). Its cathode-band polarity marking and Sn/Pb-finished copper end caps ensure reliable soldering and unambiguous orientation in high-integrity PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 30 V ±2% - Provides precise, repeatable regulation point for reference or clamp applications. |
| Test Current (IZT) | 40 mA - Operating point at which VZ and dynamic impedance are guaranteed per spec. |
| Dynamic Impedance (ZZT) | 8 Ω @ IZT - Low AC impedance ensures minimal output voltage variation under dynamic load changes. |
| Max Reverse Leakage (IR) | 2 μA @ 22.8 V - Enables ultra-low standby power loss in high-impedance bias networks. |
| Power Dissipation | 5 W @ TEC = 140 °C - Sustains full-rated power in conduction-cooled surface-mount configurations. |
| Thermal Resistance (RθJC) | 7 °C/W junction-to-end-cap - Supports thermal design with predictable junction temperature rise. |
| Operating Temperature | –65 °C to +175 °C - Qualified for extreme-environment deployment without derating penalties. |
Pinout & Package
Package: Hermetically sealed voidless hard-glass case ("E" or "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 | Forward conduction terminal / Zener knee reference | Connected to lower-potential node; enables forward bias operation up to 1.5 V @ 1 A. |
| Cathode | Zener breakdown terminal / regulated output reference | Banded end; connected to higher-potential node to establish stable 30 V reference or clamp level. |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal voids-ensures long-term parameter stability in vacuum or humid environments. |
| Category I metallurgical bond | Guarantees mechanical integrity and thermal cycling reliability per MIL-PRF-19500/356 Class V requirements. |
| Triple-layer passivation | Prevents surface leakage and contamination-induced parameter drift during extended field operation. |
| Nonsensitive to ESD | Withstands >4 kV HBM per MIL-STD-750 Method 1020-reduces handling and assembly failure risk. |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050-supports use in space-grade and nuclear instrumentation systems. |
Applications
| Aerospace Power Bus Regulation | Defense Radar Bias Supply |
|---|---|
Use Scenario: Stabilizing ±15 V analog supply rails in airborne mission computers exposed to thermal shock and vibration. IC Role / Device Role / Timing Role: Primary voltage reference for precision op-amp biasing and ADC reference buffers. Use Value: Maintains 30 V regulation within ±2% across –55 °C to +125 °C ambient, enabling consistent analog performance without recalibration. |
Use Scenario: Clamping transient overvoltage on RF amplifier DC bias lines during pulsed radar transmission. IC Role / Device Role / Timing Role: Fast-response overvoltage protector absorbing 16.4 A surge pulses without degradation. Use Value: Survives repeated 8.3 ms surges while maintaining <2 μA leakage at 22.8 V-preserving signal integrity and amplifier linearity. |
| Satellite Onboard Computer Reference | Nuclear Instrumentation Signal Conditioning |
Use Scenario: Providing stable 30 V reference for radiation-tolerant DACs and sensor front-ends in LEO satellite payloads. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference source with inherent TID tolerance per MicroNote 050. Use Value: Delivers <0.090 %/°C tempco and no parameter shift after 100 krad(Si) exposure-enabling single-point calibration. |
Use Scenario: Regulating detector bias voltage in high-temperature reactor monitoring systems operating continuously at 150 °C ambient. IC Role / Device Role / Timing Role: High-temperature-stable shunt regulator maintaining 30 V despite junction temperatures up to 175 °C. Use Value: Operates at full 5 W rating with only 7 °C/W thermal resistance-eliminates need for active cooling or derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4969US/TR | Same 30 V nominal voltage but ±5% tolerance (no C suffix); higher leakage (2 μA vs. 2 μA same), identical package and thermal specs. | Suitable where tighter voltage accuracy is not required; lower cost for non-critical references. | Select JANTXV1N4969US/TR when ±5% regulation tolerance meets system error budget and cost optimization is prioritized. |
| 1N4969US | Commercial-grade version (non-JANTXV); lacks MIL-PRF-19500/356 qualification, radiation hardness, and extended temperature screening. | Restricted to benign-environment industrial controls; not approved for flight or safety-critical use. | Choose 1N4969US only for ground-based, non-mission-critical prototypes where MIL-spec testing and traceability are unnecessary. |
Compared with JANTXV1N4969US/TR and 1N4969US, the JANTXV1N4969CUS/TR uniquely combines ±2% voltage tolerance, full MIL-PRF-19500/356 Class V qualification, and verified radiation hardness-making it the sole option for high-integrity, temperature-extreme, and radiation-exposed Zener reference designs.
Availability
JANTXV1N4969CUS/TR is available at Aetrix Electronics and suitable for aerospace power bus regulation, defense radar bias supply, and satellite onboard computer reference requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTXV1N4969CUS/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 manufacturer specializing in high-reliability, radiation-hardened, and military-qualified analog and discrete components.
The JANTXV1N4969CUS/TR belongs to Microsemi's legacy 1N49xxUS series of hermetic Zener regulators, engineered specifically for fail-safe voltage reference and clamping in aerospace, defense, and nuclear instrumentation systems.
FAQ
What is the Zener voltage tolerance of JANTXV1N4969CUS/TR?
The JANTXV1N4969CUS/TR has a nominal Zener voltage of 30 V with a tolerance of ±2%, indicated by the "C" suffix in the part number. This tighter tolerance is achieved through post-manufacturing screening and is certified per MIL-PRF-19500/356. The JANTXV1N4969CUS/TR maintains this specification across its full operating temperature range of –65 °C to +175 °C, making it suitable for precision reference applications where standard ±5% devices would introduce unacceptable error.
Does JANTXV1N4969CUS/TR require derating above 140 °C?
Yes, JANTXV1N4969CUS/TR must be linearly derated above an end-cap temperature (TEC) of 140 °C, reaching zero power dissipation at 175 °C. Its specified 5 W rating applies only at TEC = 140 °C. Derating slope is –35.7 mW/°C, calculated from (5 W)/(175 °C − 140 °C). This behavior is defined in the Maximum Ratings table of the SD44A datasheet and reflects the thermal limits of the D-5B glass package's junction-to-end-cap path.
Is JANTXV1N4969CUS/TR compatible with lead-free reflow processes?
No, JANTXV1N4969CUS/TR features Sn/Pb-finished copper end caps and is not qualified for lead-free reflow. Its termination finish and glass-to-metal seal are optimized for eutectic solder (183 °C melt point). Lead-free profiles exceeding 217 °C peak temperature risk compromising hermeticity and metallurgical bond integrity. For RoHS-compliant alternatives, consult Microchip's current-generation Zener offerings, as JANTXV1N4969CUS/TR remains a legacy MIL-spec part with Pb-based terminations.
What is the maximum reverse leakage current for JANTXV1N4969CUS/TR?
The maximum reverse leakage current for JANTXV1N4969CUS/TR is 2 μA at 22.8 V (90% of VZ), measured at 25 °C per the Electrical Characteristics table. This value remains ≤5 μA across the full –65 °C to +175 °C operating range, supporting ultra-low-power bias networks in high-impedance circuits. The JANTXV1N4969CUS/TR achieves this performance via triple-layer passivation and voidless hermetic sealing, minimizing surface conduction paths.
How is polarity identified on JANTXV1N4969CUS/TR?
Polarity on JANTXV1N4969CUS/TR is identified by a visible cathode band on the glass body-consistent with JEDEC-standard marking for axial and surface-mount Zeners. The banded end is the cathode and must be connected to the higher-potential node in regulation or clamping configurations. The anode is the unmarked end cap. This marking is unambiguous under optical inspection and compatible with automated optical recognition (AOI) systems used in high-reliability PCB assembly.
JANTXV1N4969CUS/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:
- ±2%
- 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
JANTXV1N4969CUS/TR FAQ
1.How can I place an order for JANTXV1N4969CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4969CUS/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 JANTXV1N4969CUS/TR reliable?
The price and inventory of JANTXV1N4969CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4969CUS/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4969CUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4969CUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4969CUS/TR?
JANTXV1N4969CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4969CUS/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 JANTXV1N4969CUS/TR?
For technical support, including JANTXV1N4969CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4969CUS/TR requirements.
6.How does Aetrix verify that JANTXV1N4969CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4969CUS/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 JANTXV1N4969CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4969CUS/TR?
All JANTXV1N4969CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4969CUS/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 JANTXV1N4969CUS/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4969CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTXV1N4969CUS/TR Tags
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