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Microchip Technology JANTX1N5647A
- Part No.:
- JANTX1N5647A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-202AA, DO-13, Axial
- Datasheet:
-
JANTX1N5647A.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:8,921
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Product details
Overview
JANTX1N5647A from Microchip (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 31.6 V rated standoff voltage (VWM), 35.1–37.1 V breakdown voltage (V(BR)) at 1 mA, and clamps transients to ≤56.4 V at 26.5 A peak pulse current (IPP), delivering 1500 W peak pulse power (10/1000 µs). It is commonly deployed in avionics power rail protection against ESD, EFT, and secondary lightning surges per IEC61000-4-2/4-4/4-5.
For engineers reviewing the JANTX1N5647A datasheet, JANTX1N5647A pinout, JANTX1N5647A application, or JANTX1N5647A equivalent, key selection criteria include its MIL-PRF-19500/500 qualified JANTX-level screening, hermetic DO-13 package, sub-100 ps response time, -55°C to +175°C operating range, and precise 31.6 V standoff voltage for 28 V aircraft systems.
Technical Context
The JANTX1N5647A operates as a unidirectional avalanche diode, entering controlled breakdown when reverse voltage exceeds its V(BR) threshold (35.1–37.1 V), thereby shunting surge current away from protected circuitry. Its clamping action limits voltage across the load to ≤56.4 V during 26.5 A transient events, with thermal resistance of 50°C/W junction-to-lead.
It is rated for 1500 W non-repetitive peak pulse power (10/1000 µs waveform), supports forward surge current up to 200 A (8.3 ms half-sine), and maintains stable performance across -55°C to +175°C ambient, enabled by hermetic metal-glass DO-13 construction and tin-lead plating compliant with MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Rated Standoff Voltage) | 31.6 V - Maximum continuous reverse voltage before leakage exceeds 5 µA; matches 28 V nominal aircraft bus with 12.5% margin. |
| V(BR) @ I(BR) | 35.1–37.1 V @ 1 mA - Breakdown onset range; ensures reliable conduction onset above system operating voltage. |
| VC @ IPP | ≤56.4 V @ 26.5 A - Clamped voltage during worst-case 1500 W surge; defines maximum stress on downstream ICs. |
| PPP (Peak Pulse Power) | 1500 W (10/1000 µs) - Surge energy handling capacity; sufficient for IEC61000-4-5 Class 4 secondary lightning (42 Ω source). |
| Response Time | <100 ps - Enables effective suppression of ESD (IEC61000-4-2) and fast EFT bursts (IEC61000-4-4). |
| Operating Temperature | -55°C to +175°C - Supports deployment in engine bays, radar modules, and other high-temperature avionics zones. |
| Package | DO-13 (DO-202AA) - Hermetically sealed metal-glass case with cathode connected to case; enables high-reliability through-hole mounting. |
Pinout & Package
Package: DO-13 (DO-202AA), hermetically sealed metal-glass case with cathode electrically connected to the case and marked by diode symbol. Tin-lead plated leads, weight ≈1.4 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Current entry under forward bias | Connected to protected circuit ground or low-side return path; must be routed with low-inductance trace. |
| Cathode (Lead 1 / Case) | Current exit under reverse avalanche | Electrically tied to metal case; requires direct connection to chassis ground or system earth for optimal surge diversion. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic DO-13 metal package | Prevents moisture ingress and outgassing in vacuum/high-humidity environments; certified for space-grade reliability per MIL-PRF-19500/500. |
| JANTX-level military qualification | Meets screening requirements for temperature cycling, burn-in, and lot acceptance testing per MIL-PRF-19500/500, ensuring long-term stability in defense platforms. |
| 1500 W peak pulse power (10/1000 µs) | Handles repeated low-duty-cycle surges without degradation-critical for airborne power converters exposed to inductive switching noise. |
| Sub-100 ps response time | Clamps ESD events before logic-level ICs experience latch-up or gate oxide damage; validated per IEC61000-4-2 Level 4 (15 kV contact). |
| Radiation hardness | Inherently radiation-tolerant per MicroNote 050; suitable for low-earth orbit (LEO) satellite subsystems without additional shielding. |
Applications
| Aircraft 28 V DC Bus Protection | Avionics Sensor Interface Protection |
|---|---|
Use Scenario: Protecting primary power distribution nodes in commercial and military aircraft against load dump, relay bounce, and induced lightning transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 28 V rail and chassis ground to clamp surges before they reach DC-DC converters and bus controllers. Use Value: Maintains VWM = 31.6 V to avoid leakage during normal operation while clamping to ≤56.4 V during 1500 W surges-preserving downstream 40 V-rated MOSFETs and regulators. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in flight control computers from ESD and RF-induced transients. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS mounted at connector entry point to divert fast transients before signal conditioning amplifiers. Use Value: Sub-100 ps response ensures clamping occurs within first nanosecond of ESD event (IEC61000-4-2), preventing amplifier saturation or ADC offset errors. |
| Military Vehicle Power Electronics | Satellite Power Management Units |
Use Scenario: Shielding 24–28 V power supplies in armored vehicle communication systems from ignition noise and EMP-like pulses. IC Role / Device Role / Timing Role: Through-hole TVS with cathode-to-chassis grounding used across input filter capacitors to absorb repetitive 1500 W surges. Use Value: DO-13 hermetic seal prevents corrosion in humid, salt-laden environments; JANTX qualification guarantees performance after 1000+ thermal cycles (-55°C/+125°C). |
Use Scenario: Protecting PMU outputs feeding FPGAs and memory in LEO satellites exposed to single-event transients and total ionizing dose. IC Role / Device Role / Timing Role: Radiation-hardened unidirectional TVS placed at PMU output to limit voltage overshoot during load-step events and TID-induced leakage drift. Use Value: Inherent radiation tolerance (MicroNote 050) eliminates need for derating or shielding; -55°C to +175°C range accommodates orbital thermal swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTX1N5646A | VWM = 26.8 V, V(BR) = 29.7–31.4 V, VC = 47.7 V @ 31.5 A - lower standoff and clamping voltage. | Better suited for 24 V systems; insufficient margin for 28 V bus hold-up during transients. | Select only if protecting 24 V subsystems where tighter VWM matching reduces leakage risk. |
| JANTX1N5648A | VWM = 34.8 V, V(BR) = 38.7–40.9 V, VC = 61.9 V @ 24 A - higher standoff but elevated clamping voltage. | Provides greater margin for 28 V systems with high ripple; clamping voltage exceeds 40 V IC absolute max ratings. | Prefer when system ground integrity allows higher VC, or when VWM margin >15% is required for aging compensation. |
Compared with JANTX1N5646A and JANTX1N5648A, the JANTX1N5647A uniquely balances 31.6 V standoff (12.5% above 28 V nominal) and 56.4 V clamping-enabling robust protection of 40 V-rated power ICs without over-margining VWM or risking overvoltage failure.
Availability
JANTX1N5647A is available at Aetrix Electronics and suitable for aircraft power distribution, avionics sensor interfaces, and military vehicle electronics requiring stable component supply with full traceability and extended lifecycle support.
Supply support for JANTX1N5647A 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 now manufactures high-reliability discrete semiconductors including radiation-hardened and military-qualified TVS diodes.
The JANTX1N5647A belongs to Microchip's legacy Microsemi TVS family, engineered specifically for aerospace, defense, and space applications demanding hermetic packaging, extended temperature operation, and MIL-PRF-19500 compliance.
FAQ
What is the rated standoff voltage (VWM) of the JANTX1N5647A?
The JANTX1N5647A has a rated standoff voltage (VWM) of 31.6 V, meaning it remains in high-impedance state below this reverse voltage while drawing ≤5 µA standby current. This value is selected to provide 12.5% margin above standard 28 V aircraft bus systems, ensuring no false triggering during normal operation while maintaining fast response to overvoltage events. The JANTX1N5647A's VWM is tightly controlled per MIL-PRF-19500/500 screening.
How does the JANTX1N5647A differ from commercial-grade 1N5647A?
The JANTX1N5647A undergoes full MIL-PRF-19500/500 screening-including temperature cycling, burn-in, and lot acceptance testing-while the commercial 1N5647A does not. It also features tighter parameter tolerances, hermetic DO-13 packaging, and guaranteed performance from -55°C to +175°C. The JANTX1N5647A's breakdown voltage range (35.1–37.1 V) and clamping voltage (≤56.4 V) are verified per military test protocols, unlike the commercial version's broader spec limits.
Is the JANTX1N5647A suitable for IEC61000-4-5 secondary lightning protection?
Yes, the JANTX1N5647A is explicitly rated for IEC61000-4-5 secondary lightning protection with 42 Ω source impedance up to Class 4, and with 12 Ω and 2 Ω sources up to Class 2 and Class 3 respectively. Its 1500 W peak pulse power rating (10/1000 µs), sub-100 ps response, and 56.4 V clamping voltage ensure compliance when correctly mounted with low-inductance grounding to chassis. The JANTX1N5647A's hermetic DO-13 package further enhances reliability under repeated surge stress.
What is the thermal resistance and derating behavior of the JANTX1N5647A?
The JANTX1N5647A has a junction-to-lead thermal resistance of 50°C/W when measured at 0.375 inches (10 mm) from the case body. Its steady-state power dissipation is rated at 1 W at lead temperature ≤+125°C, with linear derating to zero at +175°C. For surge conditions, the device relies on short-duration thermal mass rather than steady-state conduction-so derating applies only to DC leakage or repetitive low-energy transients. The JANTX1N5647A's thermal performance is validated per Figure 3 in T4-LDS-0096 Rev. 3.
Does the JANTX1N5647A have radiation hardness certification?
Yes, the JANTX1N5647A is inherently radiation hard per Microsemi MicroNote 050, which documents its tolerance to total ionizing dose (TID) and single-event effects without requiring external shielding or derating. This characteristic stems from its silicon process and hermetic DO-13 construction-not added process steps-making it suitable for low-earth orbit (LEO) satellite power systems. The JANTX1N5647A's radiation performance is consistent across its full military temperature range.
JANTX1N5647A 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 28A
- 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)
JANTX1N5647A FAQ
1.How can I place an order for JANTX1N5647A through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5647A 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 JANTX1N5647A reliable?
The price and inventory of JANTX1N5647A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5647A is usually 5 days.
3.What payment methods are accepted for JANTX1N5647A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5647A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5647A?
JANTX1N5647A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5647A 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 JANTX1N5647A?
For technical support, including JANTX1N5647A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5647A requirements.
6.How does Aetrix verify that JANTX1N5647A is sourced from the original manufacturer or authorized distributors?
All JANTX1N5647A 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 JANTX1N5647A meets industry standards.
7.What is the process for return or replacement of JANTX1N5647A?
All JANTX1N5647A units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5647A, 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 JANTX1N5647A part is unused and in its original packaging.
Return procedure for JANTX1N5647A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N5647A Tags
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