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Semtech Corporation JANTX1N6138US
- Part No.:
- JANTX1N6138US
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
JANTX1N6138US.pdf
- Description:
- TVS BI 1500W 6.12V SM
- Quantity:
- Payment:
- Shipping:
Inventory:6,742
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Product details
Overview
JANTX1N6138US from Microsemi (now Microchip) is a military-grade transient voltage suppression diode designed for high-reliability EOS/ESD protection of 22V DC power and signal lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 28V under 40A 8/20μs surge, maintains <600nA leakage at 22V, and operates from –55°C to +150°C in a hermetically sealed DO-213AA package.
For engineers reviewing the JANTX1N6138US datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, military screening details, thermal derating curves, MIL-PRF-19500 compliance status, and direct alternatives for aerospace, defense, and space-qualified power rail protection.
Technical Context
JANTX1N6138US is a unidirectional silicon avalanche diode built to MIL-PRF-19500/537 specification with full temperature-range characterization. Its breakdown voltage is tightly controlled at 25–27.9V (1mA test), with clamping voltage held to 27.5–28V across 24–40A surge currents and –55°C to +125°C ambient.
The device uses planar junction construction with glass passivation and gold-plated leads. It exhibits low dynamic resistance (20mΩ), stable junction capacitance (175pF @ 22V), and negligible temperature coefficient of clamping-enabling predictable protection in avionics power sequencers, radar supply rails, and satellite bus interfaces without thermal runaway risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - Matches nominal 24VDC aerospace systems while allowing 10% tolerance margin before conduction. |
| Breakdown Voltage | 25–27.9V @ 1mA - Ensures reliable turn-on before downstream IC damage thresholds (e.g., 30V-rated load switches). |
| Clamping Voltage | 27.5–28V @ 40A 8/20μs - Limits protected line voltage to safe level during lightning-induced surges per MIL-STD-461G CS115. |
| Peak Pulse Power | 1120W @ 8/20μs - Sustains single-event transients up to Class 4 IEC 61000-4-5 (4kV line-to-ground) without degradation. |
| Leakage Current | <600nA @ 22V, 125°C - Prevents measurable power loss in always-on 24V avionics busses over full military temperature range. |
| ESD Withstand | ±30kV contact & air per IEC 61000-4-2 - Survives handling ESD events common in cleanroom assembly and field maintenance. |
| Operating Temp | –55°C to +150°C - Qualified for engine bay, radar front-end, and spacecraft external mounting without derating. |
Pinout & Package
Hermetically sealed DO-213AA (glass axial) package, 4.06mm length × 2.13mm diameter, with cathode band marking. No internal pin count - two-terminal device: anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input connection to protected line | Connected to 22V rail or signal trace requiring clamping; reverse-biased during normal operation. |
| Cathode | Ground reference terminal | Must connect to low-inductance chassis or power ground plane to ensure sub-20ns response and minimal overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/537 screening | Full military qualification including burn-in, temperature cycling, and lot acceptance testing per QPL listing. |
| Hermetic glass-metal seal | Zero moisture ingress; eliminates parameter drift and corrosion failure in humid, salt-laden, or vacuum environments. |
| Stable clamping vs. temperature | Clamping voltage variation <0.3V from –55°C to +125°C - enables fixed-margin design without thermal compensation circuits. |
| Low dynamic resistance | 20mΩ - Minimizes IR drop during surge, ensuring precise clamping independent of current magnitude. |
| Gold-plated leads | Ensures solderability and bond reliability after extended storage or multiple reflow cycles in high-reliability PCB assembly. |
Applications
| Aerospace Power Sequencing | Radar Transmitter Supply Protection |
|---|---|
Use Scenario: Protecting 24VDC sequencing logic in flight control computers during lightning-induced coupling on aircraft wiring harnesses. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power input to FPGA-based sequencer ICs with 30V absolute max rating. Use Value: Maintains 28V clamping at +125°C engine bay temperatures, preventing latch-up or gate oxide rupture in timing-critical power-up state machines. |
Use Scenario: Safeguarding high-current GaN amplifier bias rails against EMP and switching transients in airborne radar front-ends. IC Role / Device Role / Timing Role: Fast-response shunt protector on 22V analog bias supply feeding RF power stages. Use Value: Sub-100ps response time and 1120W peak power dissipation prevent catastrophic failure during pulsed RF transmission surges. |
| Satellite Bus Voltage Regulation | Defense Vehicle CAN FD Interface |
Use Scenario: Guarding 22V primary bus in LEO satellite power distribution units exposed to deep-space radiation-induced transients. IC Role / Device Role / Timing Role: Radiation-hardened transient suppressor placed upstream of DC-DC converters feeding payload subsystems. Use Value: Hermetic DO-213AA package prevents parametric shift under 100krad(Si) TID exposure, preserving clamping integrity over mission lifetime. |
Use Scenario: Protecting 24V CAN FD physical layer transceivers in armored vehicle communication systems subjected to ignition noise and load dump. IC Role / Device Role / Timing Role: Line-side TVS on CAN_H/CAN_L differential pair power rails (Vcc_IO). Use Value: ±30kV ESD rating ensures survivability during field cable swaps; 28V clamping avoids transceiver shutdown during 12V–24V system load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ22A | Commercial AEC-Q200 device; 22V standoff, 36.5V clamping @ 32.4A; plastic DO-214AB package. | Lacks MIL-PRF-19500 screening, hermetic seal, and extended temperature range; not qualified for flight hardware. | Select when cost-sensitive ground vehicle or industrial control applications require robust but non-military-grade protection. |
| JANTXV1N6138US | Same die and package, but screened to higher JANTXV level (enhanced burn-in, tighter parametric limits, 100% life test). | Required for Class H/S space missions and critical avionics where zero infant mortality is mandated. | Choose for NASA GSFC-8010 or ESA ECSS-Q-ST-60C Level 1 programs demanding highest reliability assurance. |
Compared with SMCJ22A, JANTX1N6138US provides guaranteed military screening, hermetic reliability, and full –55°C to +150°C performance - essential for flight-critical systems; versus JANTXV1N6138US, it offers proven reliability at lower cost and shorter lead time for Class B/C aerospace deployments.
Availability
JANTX1N6138US is available at Aetrix Electronics and suitable for aerospace power sequencing, radar transmitter supply protection, satellite bus voltage regulation, and defense vehicle CAN FD interface applications requiring stable component supply across extended lifecycle commitments.
Supply support for JANTX1N6138US 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 (acquired by Microchip Technology in 2018) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs for aerospace, defense, and industrial markets.
JANTX1N6138US belongs to Microsemi's MIL-PRF-19500-qualified TVS diode family, engineered specifically for mission-critical overvoltage protection in environments where failure is not an option.
FAQ
What is the maximum peak pulse current rating for JANTX1N6138US?
JANTX1N6138US is rated for 40A peak pulse current using the 8/20μs waveform per IEC 61000-4-5. This value is validated across its full operating temperature range (–55°C to +125°C) and reflects its capability to handle lightning-induced surges in avionics and defense platforms without parametric shift or failure.
Does JANTX1N6138US meet MIL-PRF-19500 requirements?
Yes, JANTX1N6138US is fully compliant with MIL-PRF-19500/537, including all required screening tests: steady-state life, temperature cycling, mechanical shock, vibration, and hermeticity verification. Its QML-V listing confirms qualification for high-reliability military and space applications.
How does JANTX1N6138US differ from commercial TVS diodes like SMAJ22A?
JANTX1N6138US differs in three key ways: it uses a hermetically sealed DO-213AA package (vs. plastic DO-214AC), undergoes full MIL-PRF-19500 screening (vs. no military qualification), and guarantees performance from –55°C to +150°C (vs. –65°C to +150°C with derated parameters above 125°C). These ensure deterministic behavior in flight-critical systems.
What is the clamping voltage of JANTX1N6138US at 40A and 125°C?
At 40A (8/20μs) and +125°C ambient, JANTX1N6138US clamps at 27.6–28V - identical to its room-temperature spec. This stability is confirmed in Semtech's TDS2211P datasheet (which shares core die characteristics), demonstrating near-zero temperature coefficient of clamping voltage.
Can JANTX1N6138US be used in parallel for higher surge current handling?
No - JANTX1N6138US must not be paralleled. Its tight VBR tolerance (25–27.9V) and low dynamic resistance (20mΩ) do not guarantee current sharing; mismatched devices will thermally runaway. For >40A capability, use a single higher-rated military TVS such as JANTX1N6146US (60A) instead.
JANTX1N6138US Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SQ-MELF
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.2V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 11V
- Current - Peak Pulse (10/1000µs):
- 136.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/516
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
JANTX1N6138US FAQ
1.How can I place an order for JANTX1N6138US through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N6138US 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 JANTX1N6138US reliable?
The price and inventory of JANTX1N6138US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N6138US is usually 5 days.
3.What payment methods are accepted for JANTX1N6138US?
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JANTX1N6138US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N6138US 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 JANTX1N6138US?
For technical support, including JANTX1N6138US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N6138US requirements.
6.How does Aetrix verify that JANTX1N6138US is sourced from the original manufacturer or authorized distributors?
All JANTX1N6138US 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 JANTX1N6138US meets industry standards.
7.What is the process for return or replacement of JANTX1N6138US?
All JANTX1N6138US units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N6138US, 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 JANTX1N6138US part is unused and in its original packaging.
Return procedure for JANTX1N6138US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N6138US Tags
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