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Microchip Technology JANTX1N4148UBD/TR
- Part No.:
- JANTX1N4148UBD/TR
- Manufacturer:
- Microchip Technology
- Category:
- Diode Arrays
- Package:
- 3-SMD, No Lead
- Datasheet:
-
JANTX1N4148UBD/TR.pdf
- Description:
- DIODE ARRAY GP 75V 200MA UB
- Quantity:
- Payment:
- Shipping:
Inventory:9,257
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Product details
Overview
JANTX1N4148UBD/TR from Microsemi is a military-qualified surface-mount silicon switching diode in the UB package, featuring 75 V working peak reverse voltage, 200 mA average rectified current at 75 °C, 5 ns reverse recovery time, and 4.0 pF capacitance at 0 V - deployed in high-frequency RS-232/RS-422 interface networks and Ethernet 10 Base-T data lines.
For engineers reviewing the JANTX1N4148UBD/TR datasheet, JANTX1N4148UBD/TR pinout, JANTX1N4148UBD/TR application, or JANTX1N4148UBD/TR equivalent, key selection criteria include MIL-PRF-19500/116 JANTX-level qualification, ceramic-body thermal robustness (–65 to +200 °C junction range), low-leakage operation (<25 nA @ 20 V), and unidirectional polarity with gold-plated terminals.
Technical Context
This diode implements a planar-diffused silicon PN junction optimized for fast transient response in signal routing paths. Its 5 ns reverse recovery time and sub-1.2 V forward voltage at 100 mA enable reliable performance in digital logic clamping and high-speed line termination.
The UB package uses a two-terminal ceramic body with metallized base and emitter pads, supporting solder-reflow assembly while maintaining 120 °C/W junction-to-solder-pad thermal resistance. Polarity is unidirectional (no suffix 'CA', 'CC', or 'D' in part number), confirmed by JANTX1N4148UBD/TR nomenclature and Microsemi's part numbering guide.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 75 V - maximum continuous DC reverse bias before significant leakage or breakdown in signal-line protection applications |
| Reverse Recovery Time (trr) | 5 ns - enables clean edge transitions in >10 MHz digital waveforms without tailing or ringing |
| Forward Voltage (VF1 @ 10 mA) | 0.8 V max - ensures minimal voltage drop and power loss in low-current logic-level clamping circuits |
| Junction Temperature Range | –65 to +200 °C - supports operation in extended-temperature military avionics and downhole electronics |
| Capacitance (C @ 0 V, 1 MHz) | 4.0 pF - preserves signal integrity on high-speed data lines (e.g., RS-422) with negligible loading |
| Average Rectified Current | 200 mA @ TA = 75 °C - defines safe continuous forward conduction capability under derated ambient conditions |
| Reverse Current (IR1 @ 20 V) | 25 nA max - guarantees ultra-low leakage in precision sample-and-hold or analog switch hold paths |
Pinout & Package
The JANTX1N4148UBD/TR is housed in a hermetically sealed ceramic UB surface-mount package with two terminals: Pad 1 (anode) and Pad 2 (cathode), per Microsemi T4-LDS-0281-2 mechanical drawing. Dimensions: 3.25 mm × 2.74 mm × 1.42 mm (L × W × H), weight < 0.04 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pad 1 | Anode | Forward current entry point; connects to higher-potential node in clamping or steering configurations |
| Pad 2 | Cathode | Forward current exit point; typically tied to reference rail or logic ground in ESD protection paths |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/116 JANTX qualification | Validated reliability for defense systems requiring screened lots, lot traceability, and extended temperature operation |
| Ceramic UB package | Hermetic seal and CTE-matched metallization ensure long-term stability in thermal cycling environments |
| 5 ns reverse recovery time | Enables use in >100 kbps serial interfaces without waveform distortion or timing skew |
| Gold-plated nickel terminals | Ensures solderability and intermetallic bond integrity across multiple reflow cycles and storage durations |
| Unidirectional polarity | Simplifies PCB layout with single-direction current flow; eliminates ambiguity in cathode/anode orientation |
Applications
| RS-232 Interface Protection | Ethernet 10 Base-T Line Clamping |
|---|---|
Use Scenario: Protecting UART transceivers from ESD and line transients in ruggedized industrial controllers. IC Role / Device Role / Timing Role: Signal-level clamping diode placed between TX/RX lines and chassis ground. Use Value: 5 ns trr and 4.0 pF capacitance prevent data corruption during 25 kV contact discharge events per IEC 61000-4-2. | Use Scenario: Limiting voltage excursions on twisted-pair PHY differential pairs in legacy LAN equipment. IC Role / Device Role / Timing Role: Bidirectional clamp (paired anode-cathode) suppressing overshoot/undershoot beyond ±12 V. Use Value: 75 V VRWM withstands common-mode surges while 0.8 V VF1 minimizes insertion loss in 10 Mbps signaling. |
| High-Frequency Data Acquisition | Military Avionics Signal Routing |
Use Scenario: Front-end protection of ADC input channels sampling RF-modulated sensor outputs. IC Role / Device Role / Timing Role: Low-capacitance shunt diode limiting input voltage to ±0.8 V above/below supply rails. Use Value: 4.0 pF capacitance avoids bandwidth degradation up to 100 MHz; 25 nA IR1 prevents offset drift in precision amplifiers. | Use Scenario: Logic-level translation and bus isolation in flight control computers operating at –55 °C to +125 °C. IC Role / Device Role / Timing Role: Unidirectional steering diode enabling selective power domain enablement. Use Value: –65 to +200 °C TJ rating and JANTX screening support full MIL-STD-810G environmental compliance without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSVRB140SHT3G | Lower VF (0.5 V @ 100 mA), higher IFSM (3 A), but only commercial AEC-Q200 qualification - no MIL-spec screening. | Automotive infotainment data lines; unsuitable for JANTX-requiring defense programs. | Select only if MIL-PRF-19500/116 compliance is not required and lower forward drop is prioritized. |
| Vishay 1N4148WS-E3-08 | Same JEDEC 1N4148 electrical specs, SOD-323 package, RoHS-compliant - lacks ceramic hermeticity and JANTX screening. | Commercial-grade consumer electronics; cannot meet MIL-STD-883 test requirements. | Acceptable for cost-sensitive non-military designs where 200 °C junction rating and hermetic seal are unnecessary. |
Compared with JANTX1N4148UBD/TR, NSVRB140SHT3G offers better efficiency but no military qualification, while 1N4148WS-E3-08 matches baseline performance at lower cost but sacrifices hermetic reliability and extended temperature capability - making JANTX1N4148UBD/TR irreplaceable in mission-critical embedded systems.
Availability
JANTX1N4148UBD/TR is available at Aetrix Electronics and suitable for RS-232 interface protection, Ethernet 10 Base-T line clamping, and military avionics signal routing requiring stable component supply across extended temperature and reliability lifecycles.
Supply support for JANTX1N4148UBD/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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs, discrete devices, and radiation-hardened components for aerospace, defense, and industrial markets.
The JANTX1N4148UBD/TR belongs to Microsemi's military-grade switching diode product line, engineered specifically for signal integrity preservation and transient resilience in harsh-environment electronic subsystems.
FAQ
What does the 'JANTX' prefix signify for JANTX1N4148UBD/TR?
The 'JANTX' prefix indicates that JANTX1N4148UBD/TR is qualified to MIL-PRF-19500/116 Level JANTX, including rigorous screening for parameter limits, burn-in, temperature cycling, and lot traceability. This level exceeds commercial standards and is mandatory for many U.S. Department of Defense contracts and high-reliability avionics applications.
Is JANTX1N4148UBD/TR compatible with lead-free reflow processes?
Yes, JANTX1N4148UBD/TR supports standard lead-free reflow profiles per J-STD-020. Its ceramic UB package and gold-plated nickel terminals withstand peak temperatures up to 260 °C for 20–40 seconds without degradation, and its thermal resistance (RθJSP = 120 °C/W) ensures safe thermal dissipation during assembly.
How does the UB package differ from DO-35 or SOD-323 in JANTX1N4148UBD/TR?
The UB package of JANTX1N4148UBD/TR is a hermetically sealed ceramic surface-mount case, unlike plastic SOD-323 or glass DO-35 packages. It provides superior moisture resistance, zero outgassing, and guaranteed operation from –65 to +200 °C - critical for space and military platforms where long-term reliability under thermal stress is non-negotiable.
Can JANTX1N4148UBD/TR be used as a direct replacement for commercial 1N4148 in existing designs?
JANTX1N4148UBD/TR shares identical electrical characteristics with commercial 1N4148 but requires layout verification due to its larger ceramic UB footprint (3.25 mm × 2.74 mm vs. SOD-323's 1.7 mm × 1.25 mm). Pin-to-pin compatibility is not guaranteed; redesign may be needed for pad geometry and thermal relief.
What is the maximum surge current rating for JANTX1N4148UBD/TR?
JANTX1N4148UBD/TR has a non-repetitive sinusoidal surge current rating (IFSM) of 2 A (peak) for tp = 8.3 ms, per MIL-PRF-19500/116. This supports transient suppression in short-duration overcurrent events such as lightning-induced surges on communication lines, provided proper series impedance limits energy dissipation.
JANTX1N4148UBD/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 3-SMD, No Lead
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 75 V
- Current - Average Rectified (Io) (per Diode):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 20 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 75 V
- Operating Temperature - Junction:
- -65°C ~ 200°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/116
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- UB
JANTX1N4148UBD/TR FAQ
1.How can I place an order for JANTX1N4148UBD/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4148UBD/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 JANTX1N4148UBD/TR reliable?
The price and inventory of JANTX1N4148UBD/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4148UBD/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4148UBD/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4148UBD/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4148UBD/TR?
JANTX1N4148UBD/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4148UBD/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 JANTX1N4148UBD/TR?
For technical support, including JANTX1N4148UBD/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4148UBD/TR requirements.
6.How does Aetrix verify that JANTX1N4148UBD/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4148UBD/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 JANTX1N4148UBD/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4148UBD/TR?
All JANTX1N4148UBD/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4148UBD/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 JANTX1N4148UBD/TR part is unused and in its original packaging.
Return procedure for JANTX1N4148UBD/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4148UBD/TR Tags
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