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Microchip Technology JANTX1N5656A
- Part No.:
- JANTX1N5656A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-202AA, DO-13, Axial
- Datasheet:
-
JANTX1N5656A.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:6,734
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Product details
Overview
JANTX1N5656A from Microchip (formerly Microsemi) is a hermetically sealed, unidirectional transient voltage suppressor (TVS) diode in DO-13 metal package, designed for high-reliability military and aerospace applications. It features 73.8 V minimum breakdown voltage (VBR), 66.4 V rated standoff voltage (VWM), 118 V maximum clamping voltage (VC) at 12.7 A peak pulse current (IPP), and 1500 W peak pulse power rating at 10/1000 µs waveform - used primarily for secondary lightning protection and ESD/EFT suppression in avionics power rails.
For engineers reviewing the JANTX1N5656A datasheet, JANTX1N5656A pinout, JANTX1N5656A application, or JANTX1N5656A equivalent, this part delivers verified MIL-PRF-19500/500 Class B qualification, sub-100 ps response time, and radiation-hardened performance per MicroNote 050 - critical for flight-critical systems requiring deterministic overvoltage clamping under IEC 61000-4-2, -4-4, and -4-5 (42 Ω source).
Technical Context
The JANTX1N5656A operates as a unidirectional avalanche diode, entering controlled breakdown when reverse voltage exceeds its 73.8–90.2 V VBR range at 1 mA test current. Its clamping action limits transients to ≤118 V at 12.7 A, with thermal resistance of 50 °C/W junction-to-lead and operating temperature range from –55 °C to +175 °C.
It is hermetically sealed in a DO-13 (DO-202AA) metal-glass package with cathode connected to case, polarity marked by diode symbol, and tin-lead plating compliant with MIL-STD-750 Method 2026. Standby leakage is ≤5 µA at 66.4 V VWM, and temperature coefficient of VBR is +0.106 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Rated Standoff) | 66.4 V - Maximum continuous reverse voltage before significant leakage; must exceed system DC rail (e.g., 28 V or 270 V avionics buses with margin). |
| VBR @ IBR | 73.8–90.2 V @ 1 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating voltage but below system insulation limits. |
| VC @ IPP | 118 V @ 12.7 A - Peak clamped voltage during 10/1000 µs surge; defines worst-case stress on downstream ICs and passives. |
| PPP (Peak Pulse Power) | 1500 W - Sustains single 10/1000 µs transients without degradation; validated per Figure 1 derating curve up to TL = 25 °C. |
| IPP (Peak Pulse Current) | 12.7 A - Maximum surge current it can divert while maintaining VC ≤ 118 V; directly determines survivability against IEC 61000-4-5 Class 3 (42 Ω source). |
| Response Time | <100 ps - Enables effective suppression of ESD (IEC 61000-4-2) and fast EFT bursts (IEC 61000-4-4) before system-level damage occurs. |
| TJ Operating Range | –55 °C to +175 °C - Supports operation in engine bay, radar bays, and other extreme-temperature zones common in military aircraft. |
Pinout & Package
Package: DO-13 (DO-202AA), hermetically sealed metal-glass case with cathode connected to case. Tin-lead plated leads, 1.4 g mass, polarity indicated by molded diode symbol.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry point | Connected to protected line (e.g., 28 V bus); carries full surge current into device during clamping. |
| Cathode (Lead 1 / Case) | Clamping reference & return path | Internally bonded to metal case; must be tied to low-impedance ground plane or chassis to ensure effective energy shunting. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/500 JANTX qualification | Meets Class B screening requirements including burn-in, temperature cycling, and hermeticity testing - mandatory for DoD procurement. |
| Hermetic DO-13 metal package | Eliminates moisture ingress and long-term parameter drift; enables >20-year field life in humid, high-vibration airborne environments. |
| Radiation hardness | Inherently radiation-tolerant per MicroNote 050 - suitable for low-earth orbit (LEO) and high-altitude platforms without additional shielding. |
| Sub-100 ps response | Clamps ESD events before logic thresholds are violated; prevents latch-up or gate oxide rupture in FPGAs, ADCs, and microcontrollers. |
| 1500 W 10/1000 µs rating | Withstands repeated lightning-induced surges per IEC 61000-4-5 (42 Ω source, Class 3) without parametric shift or failure. |
Applications
| Aircraft Power Bus Protection | Avionics Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 28 V DC primary power distribution in fighter jet flight control computers from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between bus and ground, clamping transients within 100 ps to limit voltage excursion to ≤118 V. Use Value: Prevents catastrophic failure of MIL-STD-1553B interface ICs and power management ASICs during engine start-up or generator fault conditions. |
Use Scenario: Shielding ARINC 429 data lines in cockpit display units from coupled RF and electrostatic discharge. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on differential signal pair, referenced to chassis ground via case connection. Use Value: Maintains signal integrity at 100 kbps while suppressing ±8 kV contact ESD (IEC 61000-4-2) without distorting waveform edges. |
| Secondary Lightning Protection | Ground Vehicle Electronics |
|
Use Scenario: Mitigating induced surges on helicopter rotor blade pitch control wiring per IEC 61000-4-5 (42 Ω source, Class 3). IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection network, absorbing >90% of 12.7 A surge energy before downstream MOVs activate. Use Value: Reduces required MOV size and thermal stress, enabling compact, conduction-cooled designs meeting DO-160 Section 22 Level 3. |
Use Scenario: Hardening vehicle-mounted SATCOM transceivers against ignition noise and battery disconnect transients in armored transport vehicles. IC Role / Device Role / Timing Role: Standoff-rated TVS on 270 V DC input stage, selected for 66.4 V VWM to tolerate 20% overvoltage while blocking leakage. Use Value: Eliminates need for redundant filtering stages, reducing weight and improving MTBF in harsh EMI environments (MIL-STD-461G RS103). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5656A | Commercial-grade version; same VWM/VC/IPP specs but no MIL-PRF-19500 screening or radiation assurance. | Limited to non-mission-critical ground systems; not approved for flight hardware or DoD BOMs. | Select only for cost-sensitive prototyping or commercial UAVs where JANTX-level reliability is not mandated. |
| JANTXV1N5656A | Higher-screening JANTXV grade: includes extended temperature testing, enhanced hermeticity, and tighter VBR tolerance (±5% vs ±10%). | Required for space-qualified payloads and nuclear command/control systems where zero latent defects are enforced. | Choose when program specifications explicitly require JANTXV per MIL-PRF-19500/500 Appendix A. |
Compared with JANTX1N5656A, the 1N5656A lacks military screening and radiation assurance - making it unsuitable for flight-critical use - while JANTXV1N5656A adds stricter process controls and tighter parametric limits for ultra-high-reliability deployments, at higher cost and longer lead time.
Availability
JANTX1N5656A is available at Aetrix Electronics and suitable for aircraft power bus protection, avionics signal line hardening, and secondary lightning protection requiring stable component supply across extended production lifecycles and defense logistics channels.
Supply support for JANTX1N5656A 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 lines, including military-qualified TVS diodes, for aerospace, defense, and industrial markets.
The JANTX1N5656A belongs to Microchip's legacy TVS family originally developed by Microsemi for ruggedized transient suppression in avionics and satellite subsystems - engineered specifically for survivability under extreme thermal, radiation, and surge stress.
FAQ
What is the maximum clamping voltage of the JANTX1N5656A under a 10/1000 µs surge?
The JANTX1N5656A has a maximum clamping voltage (VC) of 118 V when subjected to its rated peak pulse current of 12.7 A under a 10/1000 µs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components remain within absolute maximum ratings. The JANTX1N5656A achieves this clamping performance while maintaining sub-100 ps response time and MIL-PRF-19500/500 qualification.
Is the JANTX1N5656A suitable for bidirectional transient suppression?
No, the JANTX1N5656A is a unidirectional TVS diode - its cathode is internally connected to the metal case and must be tied to ground, while the anode connects to the protected line. It conducts only during negative transients relative to ground. For bidirectional protection in the same DO-13 package, Microchip specifies the separate 1N6036–1N6072A series. Using JANTX1N5656A in bidirectional configurations risks forward conduction damage or inadequate positive-swing clamping.
What is the standoff voltage rating of the JANTX1N5656A, and how does it relate to system design?
The JANTX1N5656A has a rated standoff voltage (VWM) of 66.4 V - the maximum continuous reverse voltage it can block without exceeding 5 µA leakage current. In system design, VWM must exceed the highest steady-state or peak operating voltage of the protected line (e.g., 28 V nominal bus with 20% tolerance = 33.6 V), providing sufficient margin to prevent false triggering while ensuring robust clamping during surges. The JANTX1N5656A's 66.4 V VWM supports 270 V DC avionics buses with appropriate derating.
Does the JANTX1N5656A meet IEC 61000-4-5 for secondary lightning protection?
Yes, the JANTX1N5656A is validated for secondary lightning protection per IEC 61000-4-5 with 42 Ω source impedance up to Class 3 (12.7 A), and with 12 Ω source impedance up to Class 1. Its 1500 W peak pulse power rating, 118 V clamping voltage, and sub-100 ps response enable compliance in multi-stage protection networks. The JANTX1N5656A is explicitly listed in the datasheet for these classes, and its MIL-PRF-19500/500 qualification ensures consistent performance across environmental stress profiles required in DO-160 Section 22 testing.
How is the JANTX1N5656A packaged, and what are the implications for PCB layout?
The JANTX1N5656A uses a hermetically sealed DO-13 (DO-202AA) metal-glass package with cathode connected to the case. Layout requires direct, low-inductance connection of the case (cathode) to a solid ground plane or chassis - not a routed trace - to minimize clamping impedance. Anode lead must be kept short and wide to reduce parasitic inductance. Thermal relief is unnecessary due to the 50 °C/W junction-to-lead resistance; the JANTX1N5656A relies on lead conduction, not board copper, for heat dissipation during surge events.
JANTX1N5656A 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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
JANTX1N5656A FAQ
1.How can I place an order for JANTX1N5656A through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5656A 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 JANTX1N5656A reliable?
The price and inventory of JANTX1N5656A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5656A is usually 5 days.
3.What payment methods are accepted for JANTX1N5656A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5656A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5656A?
JANTX1N5656A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5656A 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 JANTX1N5656A?
For technical support, including JANTX1N5656A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5656A requirements.
6.How does Aetrix verify that JANTX1N5656A is sourced from the original manufacturer or authorized distributors?
All JANTX1N5656A 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 JANTX1N5656A meets industry standards.
7.What is the process for return or replacement of JANTX1N5656A?
All JANTX1N5656A units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5656A, 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 JANTX1N5656A part is unused and in its original packaging.
Return procedure for JANTX1N5656A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N5656A Tags
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