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Microchip Technology JAN1N5642A
- Part No.:
- JAN1N5642A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-202AA, DO-13, Axial
- Datasheet:
-
JAN1N5642A.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:8,023
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Product details
Overview
JAN1N5642A 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 systems. It delivers 1500 W peak pulse power at 10/1000 µs, clamps transients below 33.2 V at 45 A peak pulse current, and operates across –55°C to +175°C - commonly deployed in avionics power rail protection against secondary lightning per IEC61000-4-5 with 2 Ω source impedance.
For engineers reviewing the JAN1N5642A datasheet, JAN1N5642A pinout, JAN1N5642A application, or JAN1N5642A equivalent, key selection criteria include its 20.5 V rated standoff voltage (VWM), 22.8–25.2 V breakdown range (VBR), sub-100 ps response time, hermetic DO-13 packaging, and JAN-level qualification per MIL-PRF-19500/500.
Technical Context
This device functions as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR (22.8–25.2 V at 1 mA), entering low-impedance conduction to limit transient energy. Its metal-glass DO-13 package ensures hermetic sealing and radiation hardness per MicroNote 050, supporting operation in harsh thermal and radiation environments.
The cathode is internally bonded to the case, establishing fixed polarity and enabling direct chassis-ground mounting. Thermal resistance is 50°C/W junction-to-lead (at 10 mm lead length), allowing robust surge handling without external heatsinking under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 5 µA; sets minimum system rail compatibility. |
| VBR @ IBR | 22.8–25.2 V @ 1 mA - guaranteed avalanche initiation window; defines precise overvoltage trip threshold. |
| VC @ IPP | 33.2 V @ 45 A - maximum clamped voltage during 10/1000 µs surge; determines protected circuit's worst-case overvoltage exposure. |
| PPP | 1500 W - non-repetitive peak pulse power rating; enables suppression of high-energy transients like IEC61000-4-5 Class 2 (2 Ω source). |
| Response Time | <100 ps - near-instantaneous avalanche turn-on; critical for ESD (IEC61000-4-2) and EFT (IEC61000-4-4) immunity. |
| Operating Temp | –55°C to +175°C - full military temperature range; supports engine bay, avionics bay, and space-qualified deployments. |
| Package | DO-13 (DO-202AA) - hermetically sealed metal-glass case with tin-lead plating; meets MIL-STD-750 solderability requirements. |
Pinout & Package
DO-13 (DO-202AA) hermetically sealed metal-glass package with axial leads; cathode terminal electrically connected to case and marked by diode symbol on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient current entry point | Connected to protected line; reverse-biased during normal operation; conducts surge current toward cathode/case ground path. |
| Cathode (Lead 1 / Case) | Clamp reference and return path | Internally bonded to metal case; must be connected to system ground/chassis; establishes fixed polarity and enables low-inductance grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic DO-13 metal package | Prevents moisture ingress and outgassing in vacuum/high-humidity environments; qualified for long-term reliability in airborne systems. |
| JAN-level qualification | Fully compliant with MIL-PRF-19500/500; includes screening for vibration, shock, temperature cycling, and burn-in - required for DoD procurement. |
| 2 Ω IEC61000-4-5 Class 2 support | Validated clamping performance up to 45 A peak pulse under 2 Ω source impedance - targets high-current secondary lightning surges in aircraft wiring. |
| Radiation hardness | Inherently radiation-tolerant per MicroNote 050; suitable for low-earth orbit (LEO) and high-altitude avionics without additional shielding. |
| Sub-100 ps response | Eliminates need for pre-clamp filtering in ESD-sensitive interfaces; protects CMOS inputs and analog front-ends before damage occurs. |
Applications
| Aerospace Power Distribution | Avionics Signal Line Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus lines in aircraft electrical systems from load dump and induced lightning transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping reverse-polarity surges and inductive kickback on primary power rails. Use Value: Limits transient voltage to ≤33.2 V during 45 A surges, preventing MOSFET gate oxide rupture and regulator latch-up in flight-critical subsystems. |
Use Scenario: Shielding ARINC 429 data receivers from ESD events and RF-induced transients on airborne communication buses. IC Role / Device Role / Timing Role: Fast-acting voltage clamp placed at connector interface to shunt ESD energy before reaching receiver IC input stages. Use Value: Sub-100 ps response ensures clamping occurs within first nanosecond of ESD contact, preserving signal integrity and meeting DO-160 Section 22 Level 4 compliance. |
| Military Vehicle Electronics | Satellite Power Conditioning |
Use Scenario: Safeguarding 24 V control circuits in armored vehicle ECUs against EMP-like transients from nearby weapon discharge. IC Role / Device Role / Timing Role: Primary overvoltage protector on sensor supply lines and CAN transceiver VCC rails. Use Value: Hermetic DO-13 construction withstands wide thermal cycling (–55°C to +175°C) and mechanical shock, maintaining clamping performance across battlefield conditions. |
Use Scenario: Protecting DC-DC converter inputs in LEO satellite power management units exposed to single-event effects and solar flare-induced surges. IC Role / Device Role / Timing Role: Radiation-hardened transient suppressor on primary bus input, mounted directly to chassis ground plane. Use Value: Inherent radiation tolerance eliminates need for derating or shielding mass; DO-13 case-to-cathode bond minimizes ground loop inductance for clean clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N5642A | Same electrical specs but JANTXV-grade: tighter parametric screening, extended temperature validation, and enhanced reliability testing per MIL-PRF-19500/500 Appendix A. | Required for spaceflight and nuclear-hardened platforms where failure modes must be statistically bounded. | Select when mission-critical redundancy or zero-defect field performance is mandated beyond standard JAN requirements. |
| 1N5642A (commercial) | Identical VWM, VBR, VC, and package; lacks MIL-PRF-19500 screening, temperature range limited to –65°C to +175°C, no radiation hardness documentation. | Suitable for ground-based industrial controls or non-safety-critical test equipment where cost and availability outweigh qualification needs. | Choose for prototyping or commercial derivatives where military qualification adds unnecessary cost and lead time. |
Compared with JANTXV1N5642A, the JAN1N5642A offers proven military reliability at lower screening rigor - ideal for defense avionics not requiring space-grade assurance. Versus 1N5642A, it guarantees full –55°C operation, hermeticity, and radiation tolerance essential for airborne deployment.
Availability
JAN1N5642A is available at Aetrix Electronics and suitable for aerospace power distribution, avionics signal line protection, and military vehicle electronics requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N5642A 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 JAN1N5642A belongs to Microchip's legacy Microsemi TVS portfolio, engineered specifically for defense, aerospace, and high-reliability industrial applications demanding hermetic packaging and MIL-PRF-19500 compliance.
FAQ
What is the standoff voltage (VWM) of the JAN1N5642A?
The JAN1N5642A has a rated standoff voltage (VWM) of 20.5 V, meaning it remains non-conductive under continuous reverse bias up to this level while drawing ≤5 µA leakage current. This value ensures compatibility with nominal 24 V or 28 V aerospace and military power systems where transient margins must be preserved without false triggering. The JAN1N5642A maintains this specification across its full –55°C to +175°C operating range.
How does the JAN1N5642A differ from commercial 1N5642A?
The JAN1N5642A differs from the commercial 1N5642A through full JAN-level qualification per MIL-PRF-19500/500, including extended temperature screening (–55°C minimum), hermeticity verification, and radiation hardness documentation. While both share identical electrical parameters and DO-13 packaging, only the JAN1N5642A is approved for use in DoD-accredited avionics and ground systems requiring traceable military-grade reliability.
Is the JAN1N5642A suitable for IEC61000-4-5 lightning surge protection?
Yes - the JAN1N5642A is explicitly validated for IEC61000-4-5 secondary lightning protection with 2 Ω source impedance (Class 2), clamping to 33.2 V at 45 A peak pulse current. Its 1500 W peak pulse power rating and sub-100 ps response ensure effective suppression of fast-rising surges typical of induced lightning in aircraft wiring harnesses and vehicle power networks.
What is the thermal resistance of the JAN1N5642A?
The JAN1N5642A has a thermal resistance of 50°C/W junction-to-lead when measured at 10 mm (0.375 inch) from the case, enabling efficient heat dissipation during transient events without external heatsinking. This value is critical for sustaining repeated surge duty cycles in high-temperature environments such as engine-mounted electronics, where lead-frame conduction is the primary thermal path.
Does the JAN1N5642A have radiation hardness certification?
Yes - the JAN1N5642A is inherently radiation-hardened per Microsemi MicroNote 050, with documented tolerance to total ionizing dose (TID) and single-event effects (SEE) relevant to low-earth orbit and high-altitude flight. This radiation performance is a direct result of its hermetic DO-13 metal-glass construction and silicon process, and is retained across all JAN-qualified variants including the JAN1N5642A.
JAN1N5642A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- DO-202AA, DO-13, Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45A
- 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)
JAN1N5642A FAQ
1.How can I place an order for JAN1N5642A through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N5642A 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 JAN1N5642A reliable?
The price and inventory of JAN1N5642A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N5642A is usually 5 days.
3.What payment methods are accepted for JAN1N5642A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N5642A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N5642A?
JAN1N5642A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N5642A 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 JAN1N5642A?
For technical support, including JAN1N5642A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N5642A requirements.
6.How does Aetrix verify that JAN1N5642A is sourced from the original manufacturer or authorized distributors?
All JAN1N5642A 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 JAN1N5642A meets industry standards.
7.What is the process for return or replacement of JAN1N5642A?
All JAN1N5642A units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N5642A, 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 JAN1N5642A part is unused and in its original packaging.
Return procedure for JAN1N5642A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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