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Microchip Technology JANTX1N5639A
- Part No.:
- JANTX1N5639A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-202AA, DO-13, Axial
- Datasheet:
-
JANTX1N5639A.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:6,041
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Product details
Overview
JANTX1N5639A from Microchip Technology 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 1500 W peak pulse power (10/1000 µs), 16.2 V minimum breakdown voltage (VBR), and clamps transients to ≤26.5 V at 56.5 A peak pulse current (IPP). It operates across –55 °C to +175 °C and is qualified per MIL-PRF-19500/500.
For engineers reviewing the JANTX1N5639A datasheet, JANTX1N5639A pinout, JANTX1N5639A application, or JANTX1N5639A equivalent, this part delivers verified ESD/EFT protection per IEC 61000-4-2/4-4, secondary lightning suppression per IEC 61000-4-5 (with 42 Ω, 12 Ω, and 2 Ω source impedances), and radiation-hardened performance per MicroNote 050 - critical for avionics and harsh-environment electronics.
Technical Context
The JANTX1N5639A functions as a unidirectional avalanche-clamping TVS diode with cathode connected to case. Its breakdown occurs at ≥16.2 V (IBR = 1 mA), with rated standoff voltage (VWM) of 14.5 V and maximum standby leakage current of 5 µA at that voltage.
Under transient stress, it clamps to ≤26.5 V within <100 ps, dissipating up to 1500 W for non-repetitive 10/1000 µs pulses. Thermal resistance is 50 °C/W junction-to-lead (0.375″ from body), supporting operation at lead temperature ≤125 °C with 1 W DC dissipation derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14.5 V - Maximum continuous reverse operating voltage before conduction begins; must exceed system DC bus or signal swing. |
| VBR min | 16.2 V @ IBR = 1 mA - Minimum voltage at which avalanche breakdown initiates; ensures reliable triggering above normal operating range. |
| VC | ≤26.5 V @ IPP = 56.5 A - Clamped voltage during worst-case surge; defines maximum stress imposed on protected downstream circuitry. |
| PPP | 1500 W (10/1000 µs) - Peak transient energy handling capacity; enables robust protection against inductive switching and lightning-induced surges. |
| TOP/TSTG | –55 °C to +175 °C - Extended temperature range supports deployment in engine bays, avionics bays, and space-constrained military enclosures. |
| Package | DO-13 (DO-202AA) - Hermetic metal-glass axial package with tin-lead plating; provides superior moisture resistance and thermal conduction vs. plastic equivalents. |
Pinout & Package
DO-13 (DO-202AA) hermetically sealed metal-glass axial package with cathode electrically connected to case. Polarity marked by diode symbol on body; weight ≈1.4 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry point during reverse surge | Connected to protected line; carries full surge current into device during clamping event. |
| Cathode (Lead 1 / Case) | Transient current return path & thermal sink | Electrically tied to metal case; requires low-impedance PCB ground connection for optimal clamping and heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables protection against high-energy transients from inductive loads, relay switching, and secondary lightning events per IEC 61000-4-5. |
| <100 ps response time | Clamps ESD events (IEC 61000-4-2) and EFT bursts (IEC 61000-4-4) before sensitive ICs experience overstress. |
| MIL-PRF-19500/500 JANTX qualification | Guarantees screening, testing, and traceability for defense/aerospace programs requiring DSCC-approved components. |
| Radiation hardness per MicroNote 050 | Validated performance in total ionizing dose (TID) environments typical of high-altitude flight and space-qualified subsystems. |
| Hermetic DO-13 metal package | Eliminates moisture ingress risk and provides superior thermal conductivity (50 °C/W junc-to-lead) vs. plastic TVS diodes. |
Applications
| Aerospace Avionics Power Bus Protection | Military Vehicle Control System Inputs |
|---|---|
Use Scenario: Protecting 28 V DC power distribution lines in airborne radar and navigation systems from load dump and induced RF transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp surges before they reach DC-DC converters and FPGAs. Use Value: With 14.5 V VWM and 26.5 V VC, it prevents overvoltage damage while maintaining compatibility with 28 V nominal systems and legacy MIL-STD-704 compliance. |
Use Scenario: Safeguarding CAN and discrete sensor inputs in armored vehicle electronic control units exposed to ignition noise and EMP-like transients. IC Role / Device Role / Timing Role: Standoff-connected TVS on each input line, leveraging sub-100 ps response to suppress fast-rising EFT bursts without signal distortion. Use Value: JANTX1N5639A's MIL-qualified screening and radiation tolerance ensure uninterrupted operation in mission-critical battlefield electronics under extreme environmental stress. |
| Ground-Based Radar Signal Conditioning | Satellite Payload Interface Protection |
Use Scenario: Shielding analog front-end amplifiers and ADC reference inputs in S-band radar receivers from coupled lightning-induced surges. IC Role / Device Role / Timing Role: Low-leakage (5 µA @ 14.5 V) unidirectional TVS placed directly at connector interface to minimize stub inductance and preserve signal integrity. Use Value: 1500 W pulse rating and 26.5 V clamping limit enable protection against Class 4 secondary lightning (IEC 61000-4-5, 42 Ω source) without sacrificing precision measurement accuracy. |
Use Scenario: Guarding LVDS and RS-422 data links between satellite payload modules against single-event transients and launch vibration-induced arcing. IC Role / Device Role / Timing Role: Radiation-hardened TVS diode integrated into hermetic feedthrough connectors, using case-as-cathode configuration for minimal parasitic inductance. Use Value: DO-13 hermeticity and MicroNote 050 radiation validation ensure long-term reliability in LEO/GEO orbits where cumulative TID exposure exceeds 100 krad(Si). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N5639A | Higher screening level (JANTXV per MIL-PRF-19500/500); tighter parametric limits and extended burn-in. | Required for space-grade or nuclear-hardened programs where failure rate and lot traceability exceed JANTX requirements. | Select when program spec mandates JANTXV-level qualification or zero-defect reliability targets. |
| 1N5639A (commercial) | No military screening; same electrical specs but no MIL-PRF-19500/500 compliance or radiation data. | Suitable only for non-mission-critical industrial or test equipment where cost and availability outweigh qualification needs. | Choose only if JANTX-level documentation, traceability, or radiation assurance is not required. |
Compared with JANTX1N5639A, JANTXV1N5639A adds enhanced screening for ultra-high-reliability programs, while 1N5639A omits all military qualifications - making JANTX1N5639A the optimal balance of proven ruggedness, documented radiation tolerance, and supply chain traceability for defense avionics.
Availability
JANTX1N5639A is available at Aetrix Electronics and suitable for aerospace avionics, military vehicle electronics, ground-based radar systems, and satellite payload interfaces requiring stable component supply, full MIL-PRF-19500/500 compliance, and radiation-hardened assurance.
Supply support for JANTX1N5639A 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 (formerly Microsemi) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-tolerant components for aerospace, defense, and industrial markets.
The JANTX1N5639A belongs to Microchip's legacy military TVS diode family, engineered specifically for survivability in extreme electromagnetic and thermal environments - including airborne, vehicular, and space-based platforms.
FAQ
What is the standoff voltage (VWM) of the JANTX1N5639A?
The JANTX1N5639A has a rated standoff voltage (VWM) of 14.5 V. This is the maximum DC or continuous peak reverse voltage the device can withstand without entering avalanche conduction. It is selected to be safely above the normal operating voltage of protected circuits - such as 12 V or 28 V aerospace buses - while ensuring rapid clamping during overvoltage events. The JANTX1N5639A maintains leakage current ≤5 µA at this voltage.
How does the JANTX1N5639A differ from commercial 1N5639A?
The JANTX1N5639A differs from the commercial 1N5639A through full MIL-PRF-19500/500 qualification, including rigorous screening for temperature cycling, mechanical shock, and parametric stability. It also carries documented radiation hardness per MicroNote 050 - data not provided for the commercial variant. While both share identical electrical specs (VWM = 14.5 V, VC ≤ 26.5 V), only the JANTX1N5639A meets defense and space program traceability and reliability requirements.
Is the JANTX1N5639A suitable for IEC 61000-4-5 secondary lightning protection?
Yes, the JANTX1N5639A is validated for secondary lightning protection per IEC 61000-4-5 across multiple source impedances: Class 4 with 42 Ω, Class 4 with 12 Ω, and Class 3 with 2 Ω source impedance. Its 1500 W peak pulse power rating and 26.5 V clamping voltage ensure downstream circuitry remains within safe operating limits during standardized surge waveforms - making it appropriate for avionics power and signal line protection where IEC 61000-4-5 compliance is mandated.
What is the thermal resistance and maximum DC power dissipation of the JANTX1N5639A?
The JANTX1N5639A has a thermal resistance of 50 °C/W junction-to-lead (measured at 0.375″ from case body) and is rated for 1 W DC power dissipation at lead temperature ≤125 °C. This derating curve allows sustained operation in high-temperature environments like engine compartments or sealed avionics bays. Note that TVS devices like the JANTX1N5639A are intended for transient suppression - not continuous power dissipation - so DC loading should remain well below 1 W except during brief surge events.
Does the JANTX1N5639A have radiation hardness certification?
Yes, the JANTX1N5639A is inherently radiation hard per Microsemi MicroNote 050, which documents its performance under total ionizing dose (TID) exposure. This makes the JANTX1N5639A suitable for use in high-altitude flight systems and satellite payloads where cumulative radiation doses may exceed 100 krad(Si). Radiation hardness is a built-in characteristic of its DO-13 hermetic construction and silicon process - not an optional add-on - and is confirmed across the full JANTX-qualified family.
JANTX1N5639A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-202AA, DO-13, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 59.5A
- 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)
JANTX1N5639A FAQ
1.How can I place an order for JANTX1N5639A through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5639A 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 JANTX1N5639A reliable?
The price and inventory of JANTX1N5639A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5639A is usually 5 days.
3.What payment methods are accepted for JANTX1N5639A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5639A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5639A?
JANTX1N5639A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5639A 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 JANTX1N5639A?
For technical support, including JANTX1N5639A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5639A requirements.
6.How does Aetrix verify that JANTX1N5639A is sourced from the original manufacturer or authorized distributors?
All JANTX1N5639A 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 JANTX1N5639A meets industry standards.
7.What is the process for return or replacement of JANTX1N5639A?
All JANTX1N5639A units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5639A, 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 JANTX1N5639A part is unused and in its original packaging.
Return procedure for JANTX1N5639A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N5639A Tags
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