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Microchip Technology JANTX1N5641A
- Part No.:
- JANTX1N5641A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-13
- Datasheet:
-
JANTX1N5641A.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO202AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,898
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Product details
Overview
JANTX1N5641A from Microchip Technology (formerly Microsemi) is a hermetically sealed, unidirectional Transient Voltage Suppressor (TVS) diode in DO-13 metal package, designed for high-reliability aerospace and military applications. It features 19.8 V minimum breakdown voltage (VBR), 17.8 V rated standoff voltage (VWM), 31.9 V maximum clamping voltage (VC) at 47 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform - used to protect avionics power rails and signal lines against ESD, EFT, and secondary lightning surges.
For engineers reviewing the JANTX1N5641A datasheet, JANTX1N5641A pinout, JANTX1N5641A application, or JANTX1N5641A equivalent, this part delivers MIL-PRF-19500/500 qualified transient suppression with sub-100 ps response time, hermetic DO-13 packaging, and radiation-hardened performance per MicroNote 050 - critical for flight-critical systems requiring guaranteed surge immunity under extreme thermal and radiation environments.
Technical Context
The JANTX1N5641A operates as a unidirectional avalanche diode, entering controlled breakdown when reverse voltage exceeds its 19.8–24.2 V VBR range at IBR = 1 mA. Its clamping action limits transient-induced voltage to ≤31.9 V at 47 A IPP, enabling protection of downstream 24 V nominal circuits without overvoltage damage.
It is rated for operation from –55°C to +175°C, with thermal resistance of 50°C/W junction-to-lead (measured at 10 mm from body), and exhibits a temperature coefficient of +0.092%/°C for VBR. The cathode is internally connected to the metal case, enforcing fixed polarity and grounding path integrity in high-reliability mounting configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Rated Standoff) | 17.8 V - Maximum continuous reverse voltage before leakage exceeds 5 µA; sets upper limit for protected circuit's normal operating voltage. |
| VBR (Min/Max @ IBR) | 19.8 V / 24.2 V @ 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system transients but below fault thresholds. |
| VC @ IPP | 31.9 V @ 47 A - Peak clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by protected ICs or sensors. |
| PPP (Peak Pulse Power) | 1500 W - Sustained for single 10/1000 µs event; enables robust protection against IEC61000-4-5 Class 4 secondary lightning (42 Ω source). |
| Response Time | <100 ps - Near-instantaneous avalanche conduction; prevents ESD (IEC61000-4-2) and EFT (IEC61000-4-4) energy from reaching sensitive nodes. |
| Package | DO-13 (DO-202AA) - Hermetically sealed metal-glass case with tin-lead plating; meets MIL-STD-750 solderability and provides radiation hardness. |
| Operating Temp | –55°C to +175°C - Validated for extended-range avionics and engine-mounted electronics without derating. |
Pinout & Package
DO-13 (DO-202AA) hermetically sealed metal-glass package with axial leads; cathode terminal electrically bonded to case and marked with diode symbol on body. Case serves as cathode connection point and thermal/grounding interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry node | Connected to protected line; carries full surge current into device during clamping. |
| Cathode (Lead 1 / Case) | Clamped output & ground reference | Internally tied to metal case; must be connected to low-impedance system ground or chassis for effective energy shunting. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic DO-13 metal package | Prevents moisture ingress and outgassing in vacuum/space environments; supports long-term reliability in sealed avionics enclosures. |
| MIL-PRF-19500/500 qualification (JANTX) | Guarantees screening for burn-in, temperature cycling, and hermeticity - required for DoD and NASA flight hardware procurement. |
| Radiation hardness (per MicroNote 050) | Validated tolerance to total ionizing dose (TID) and single-event effects (SEE); eliminates need for additional shielding in LEO missions. |
| Sub-100 ps response time | Clamps before ESD pulses (<1 ns rise time) propagate across PCB traces - essential for protecting high-speed data interfaces like ARINC 429 or MIL-STD-1553. |
| 1500 W peak pulse power | Handles repeated 42 Ω IEC61000-4-5 Class 4 surges without degradation - suitable for aircraft power distribution units exposed to lightning-induced coupling. |
Applications
| Avionics Power Bus Protection | Flight Control Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V DC power inputs to inertial measurement units (IMUs) and air data computers in commercial and military aircraft. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp induced lightning transients and switching spikes. Use Value: Limits voltage excursion to ≤31.9 V during 42 Ω IEC61000-4-5 Class 4 surges, preventing latch-up or burnout of downstream DC/DC converters and ASICs. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from EFT bursts during ground handling or in-flight electromagnetic interference. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point to suppress fast-rising noise without distorting millivolt-level signals. Use Value: Sub-100 ps response ensures clamping occurs before EFT edge (5 ns rise) couples into signal conditioning amplifiers, preserving measurement fidelity. |
| Engine Control Unit (ECU) Inputs | Missile Guidance Signal Lines |
Use Scenario: Safeguarding digital command inputs (e.g., throttle position, fuel valve control) in turbine engine ECUs operating at +125°C ambient. IC Role / Device Role / Timing Role: High-temp-rated TVS installed inline with discrete logic inputs to absorb inductive kickback from solenoid drivers. Use Value: Stable VBR temperature coefficient (+0.092%/°C) ensures predictable clamping across full –55°C to +175°C range, avoiding false triggering or failure to clamp. |
Use Scenario: Hardening serial data links (e.g., RS-422) in tactical missile guidance sections subject to nuclear electromagnetic pulse (NEMP) coupling. IC Role / Device Role / Timing Role: Radiation-hardened TVS deployed at board-level I/O to shunt transient energy before it reaches FPGA-based guidance processors. Use Value: Hermetic DO-13 construction and MicroNote 050 radiation validation ensure survivability in high-dose environments where plastic-packaged alternatives degrade. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTX1N5642A | VWM = 19.4 V, VC = 34.7 V @ 43 A - higher standoff, slightly higher clamping voltage. | Better suited for 28 V nominal systems; less margin for 24 V rails near upper limit. | Select JANTX1N5642A only if protected circuit's max operating voltage exceeds 19.4 V and clamping headroom >15 V is acceptable. |
| SMCJ22A (surface-mount) | Same VWM/VBR range but SMC package; 1500 W rating, non-hermetic plastic body. | Lacks radiation hardness and MIL-PRF-19500 qualification; unsuitable for space or nuclear-hardened platforms. | Use SMCJ22A only in commercial-grade ground systems where DO-13 mounting and hermeticity are not required. |
Compared with JANTX1N5641A, JANTX1N5642A offers higher standoff for 28 V systems but reduced clamping margin, while SMCJ22A sacrifices military qualification and radiation tolerance for board-space savings - making JANTX1N5641A the sole choice for flight-critical, hermetically sealed, radiation-hardened transient suppression.
Availability
JANTX1N5641A is available at Aetrix Electronics and suitable for avionics power bus protection, flight control sensor interface hardening, and engine control unit (ECU) input safeguarding requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N5641A 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
Microchip Technology acquired Microsemi in 2018 and maintains its high-reliability analog and discrete product portfolio, including military-qualified TVS diodes for aerospace and defense.
The JANTX1N5641A belongs to Microchip's legacy Microsemi TVS family, engineered specifically for mission-critical transient suppression in airborne, spaceborne, and nuclear-hardened systems where hermeticity, radiation tolerance, and MIL-spec compliance are non-negotiable.
FAQ
What is the maximum clamping voltage of the JANTX1N5641A under a 10/1000 µs surge?
The JANTX1N5641A has a maximum clamping voltage (VC) of 31.9 V when subjected to its rated 47 A peak pulse current (IPP) under a 10/1000 µs waveform. This value is measured at TA = 25°C and defines the highest voltage that will appear across the device during a standardized surge event - critical for ensuring protected circuitry remains within safe operating limits. The JANTX1N5641A maintains this clamping performance across its full military temperature range.
Is the JANTX1N5641A qualified to MIL-PRF-19500/500?
Yes, the JANTX1N5641A is explicitly qualified to MIL-PRF-19500/500 as indicated by its "JANTX" prefix and documentation in Microsemi Technical Data Sheet T4-LDS-0096 Rev. 3. This qualification includes rigorous screening for hermeticity, temperature cycling, burn-in, and electrical parameter stability - confirming its suitability for U.S. Department of Defense and NASA applications. The JANTX1N5641A meets all requirements for Level S (screened) devices per the specification.
Does the JANTX1N5641A have radiation hardness certification?
Yes, the JANTX1N5641A is inherently radiation hard per Microsemi MicroNote 050, which documents its performance under total ionizing dose (TID) and single-event effect (SEE) conditions. This radiation hardness stems from its hermetic DO-13 metal-glass construction and silicon process design - eliminating the need for external shielding in low-Earth orbit (LEO) or high-altitude avionics. The JANTX1N5641A's radiation tolerance is an intrinsic feature, not an optional add-on.
What is the standoff voltage (VWM) rating for the JANTX1N5641A?
The JANTX1N5641A has a rated standoff voltage (VWM) of 17.8 V, meaning it remains in high-impedance state with ≤5 µA leakage current up to this reverse voltage at 25°C. This value is selected to match 24 V nominal systems with sufficient margin above normal operating voltage while ensuring reliable clamping during transients. The JANTX1N5641A's VWM is validated across its full –55°C to +175°C operating range.
How is polarity marked on the JANTX1N5641A DO-13 package?
The JANTX1N5641A uses a standard DO-13 marking convention: a diode symbol is laser-etched or printed on the metal body, with the cathode bar aligned toward the cathode lead (Lead 1). Per datasheet specification, the cathode is electrically connected to the metal case - so mechanical mounting to a grounded chassis also establishes the cathode connection. This dual-path cathode configuration enhances grounding integrity in high-reliability installations. The JANTX1N5641A's polarity marking is visible and consistent with MIL-STD-883 requirements.
JANTX1N5641A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-13
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/500
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-13 (DO-202AA)
JANTX1N5641A FAQ
1.How can I place an order for JANTX1N5641A through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5641A 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 JANTX1N5641A reliable?
The price and inventory of JANTX1N5641A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5641A is usually 5 days.
3.What payment methods are accepted for JANTX1N5641A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5641A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5641A?
JANTX1N5641A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5641A 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 JANTX1N5641A?
For technical support, including JANTX1N5641A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5641A requirements.
6.How does Aetrix verify that JANTX1N5641A is sourced from the original manufacturer or authorized distributors?
All JANTX1N5641A 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 JANTX1N5641A meets industry standards.
7.What is the process for return or replacement of JANTX1N5641A?
All JANTX1N5641A units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5641A, 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 JANTX1N5641A part is unused and in its original packaging.
Return procedure for JANTX1N5641A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N5641A Tags
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