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Microchip Technology JANTX1N4967CUS/TR
- Part No.:
- JANTX1N4967CUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTX1N4967CUS/TR.pdf
- Description:
- DIODE ZENER 24V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:4,504
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Product details
Overview
JANTX1N4967CUS/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 24 V at 50 mA test current, ±2% tolerance (C suffix), and maximum dynamic impedance of 5.0 Ω at IZT. It operates across –65 °C to +175 °C and is used in precision voltage regulation for avionics power conditioning and radiation-hardened sensor biasing.
For engineers reviewing the JANTX1N4967CUS/TR datasheet, JANTX1N4967CUS/TR pinout, JANTX1N4967CUS/TR application, or JANTX1N4967CUS/TR equivalent, key selection criteria include its voidless-glass hermetic package, Category I metallurgical bond, MIL-PRF-19500/356 qualification, and stable regulation under wide temperature and surge-current stress.
Technical Context
This device belongs to the JANTX-classified 1N4954US–1N4996US series, featuring triple-layer passivation and internal tungsten-slug construction for enhanced thermal reliability. Its Zener breakdown mechanism delivers tight voltage regulation over 10%–50% of IZM, with ΔVZ ≤ 2.0 V under specified current variation.
The "E" (D-5B) package enables surface-mount integration with copper end caps and Sn/Pb finish, supporting EIA-481-B tape-and-reel delivery. Thermal resistance is 7 °C/W junction-to-end-cap, enabling full 5 W operation up to 140 °C case temperature before linear derating to zero at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V ±2% at IZT = 50 mA - ensures precise reference stability for critical analog circuits |
| Power Dissipation | 5 W @ TEC = 140 °C - supports high-reliability power rail clamping without forced cooling |
| Dynamic Impedance (ZZ) | 5.0 Ω at IZT - minimizes output voltage variation under load transients |
| Max Reverse Leakage (IR) | 2 μA at VR = 18.2 V - guarantees low standby current in battery-backed systems |
| Operating Temperature | –65 °C to +175 °C - validated for aerospace, downhole, and defense electronics |
| Surge Current (IZSM) | 6.5 A @ 8.3 ms - withstands lightning-induced transients per MIL-STD-461 |
| Forward Voltage (VF) | 1.50 V @ 1.0 A - enables use as low-loss clamp in bidirectional protection schemes |
Pinout & Package
Package: Hermetically sealed voidless glass "E" package (also designated D-5B), with copper end caps and Sn/Pb termination. Cathode indicated by band. No marking on body. Weight: 539 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference | Enables standard cathode-up mounting with PCB thermal pad connection to anode side for heat spreading |
| Cathode | Regulated output node in reverse bias; carries Zener current to supply rail | Band-marked terminal; must be routed to stable voltage source with minimal trace inductance for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and long-term parameter drift in humid or vacuum environments |
| Category I metallurgical bond | Ensures mechanical integrity under shock/vibration per MIL-STD-883 Method 2002 |
| Triple-layer passivation | Prevents surface leakage and ion migration during high-bias operation |
| Nonsensitive to ESD | Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 without parameter shift |
| Radiation hardness | Qualified to 100 krad(Si) TID per MicroNote 050 - suitable for LEO satellite subsystems |
Applications
| Aerospace Power Bus Regulation | Downhole Sensor Bias Supply |
|---|---|
Use Scenario: Stabilizing 28 V DC bus in satellite power distribution units under thermal cycling and radiation exposure. IC Role / Device Role / Timing Role: Zener regulator providing fixed 24 V reference for ADC drivers and op-amp bias networks. Use Value: Maintains ±0.5% output stability across –65 °C to +125 °C ambient, ensuring data integrity in telemetry systems. |
Use Scenario: Generating stable bias voltage for piezoresistive pressure sensors in oil/gas well logging tools operating at 175 °C. IC Role / Device Role / Timing Role: Primary voltage reference for signal-conditioning front-ends exposed to extreme temperature gradients. Use Value: Delivers <2 μA leakage at 18.2 V reverse bias, minimizing self-heating error in millivolt-level sensor outputs. |
| Military Radar RF Module Protection | Avionics Flight Control Reference |
Use Scenario: Clamping transient spikes on GaN amplifier gate bias rails during radar pulse transmission. IC Role / Device Role / Timing Role: Surge-absorbing Zener shunt protecting sensitive gate oxide from >6 A 8.3 ms surges. Use Value: Sustains 6.5 A surge current without parametric shift, preserving amplifier linearity over 10,000+ duty cycles. |
Use Scenario: Providing fault-tolerant 24 V reference for dual-redundant inertial measurement unit (IMU) analog interfaces. IC Role / Device Role / Timing Role: MIL-qualified voltage reference ensuring deterministic ADC conversion under EMI stress. Use Value: Meets DO-160G Section 22 radiated emissions immunity due to hermetic shielding and low parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4967CUS/TR | Higher screening level (JANTXV vs JANTX); tighter ΔVZ spec and extended life test coverage | Required for Class H (spaceflight) and critical flight control systems per MIL-PRF-19500/356 | Select when mission-critical reliability exceeds JANTX requirements and budget allows premium screening |
| 1N4967US | Commercial-grade version; no MIL-qualified screening, wider temp range not guaranteed, no radiation data | Suitable only for non-mission-critical industrial prototypes or ground-test fixtures | Use only for cost-sensitive development where MIL-spec performance is not required |
Compared with JANTX1N4967CUS/TR, JANTXV1N4967CUS/TR adds burn-in and radiation assurance for space applications, while 1N4967US omits military screening and environmental validation-making JANTX1N4967CUS/TR the optimal balance of assured reliability and procurement availability for defense OEMs.
Availability
JANTX1N4967CUS/TR is available at Aetrix Electronics and suitable for aerospace power regulation, downhole instrumentation, military radar protection, and avionics reference design requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4967CUS/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 JANTX1N4967CUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356 qualified Zener diode family, engineered for failure-intolerant voltage regulation in harsh-environment electronics.
FAQ
What is the Zener voltage tolerance for JANTX1N4967CUS/TR?
JANTX1N4967CUS/TR has a nominal Zener voltage of 24 V with ±2% tolerance, indicated by the "C" suffix in the part number. This tolerance is guaranteed over the full operating temperature range of –65 °C to +175 °C and applies at the specified test current of 50 mA, per MIL-PRF-19500/356 compliance.
Is JANTX1N4967CUS/TR suitable for space applications?
JANTX1N4967CUS/TR is radiation-hardened per Microsemi MicroNote 050 (100 krad(Si) TID) and qualified to MIL-PRF-19500/356, making it suitable for low-earth orbit (LEO) missions. For higher TID or SEE requirements, JANTXV1N4967CUS/TR is recommended-but JANTX1N4967CUS/TR remains valid for many CubeSat and payload subsystems.
What does the "TR" suffix indicate in JANTX1N4967CUS/TR?
The "TR" suffix denotes tape-and-reel packaging per EIA-481-B standard, enabling automated SMT placement. JANTX1N4967CUS/TR is supplied in reels compatible with industry-standard pick-and-place equipment, with no additional marking or labeling beyond the cathode band on the glass body.
How does the thermal resistance of JANTX1N4967CUS/TR affect PCB layout?
JANTX1N4967CUS/TR has a junction-to-end-cap thermal resistance of 7 °C/W. To sustain full 5 W dissipation, the PCB must provide low-thermal-resistance paths-typically via copper pour connected to both end caps-and maintain TEC ≤ 140 °C. Layout should avoid thermal isolation of the "E" package's metallic terminations.
Can JANTX1N4967CUS/TR replace axial-leaded 1N4967 in existing designs?
No-JANTX1N4967CUS/TR uses the surface-mount "E" (D-5B) package, while axial-leaded 1N4967 uses DO-41. The two are not mechanically or thermally interchangeable. A redesign is required to accommodate the SMT footprint, thermal pad, and solder profile. The electrical parameters are identical, but package constraints differ fundamentally.
JANTX1N4967CUS/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):
- 24 V
- Tolerance:
- ±2%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 18.2 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
JANTX1N4967CUS/TR FAQ
1.How can I place an order for JANTX1N4967CUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4967CUS/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 JANTX1N4967CUS/TR reliable?
The price and inventory of JANTX1N4967CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4967CUS/TR is usually 5 days.
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Once your JANTX1N4967CUS/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 JANTX1N4967CUS/TR?
For technical support, including JANTX1N4967CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4967CUS/TR requirements.
6.How does Aetrix verify that JANTX1N4967CUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4967CUS/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 JANTX1N4967CUS/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4967CUS/TR?
All JANTX1N4967CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4967CUS/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 JANTX1N4967CUS/TR part is unused and in its original packaging.
Return procedure for JANTX1N4967CUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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