My Inquiry
My Account
Microchip Technology JANTX1N5642A
- Part No.:
- JANTX1N5642A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-202AA, DO-13, Axial
- Datasheet:
-
JANTX1N5642A.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:7,978
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANTX1N5642A 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 - used primarily for secondary lightning protection in avionics power rails with 2 Ω source impedance.
For engineers reviewing the JANTX1N5642A datasheet, JANTX1N5642A pinout, JANTX1N5642A application, or JANTX1N5642A equivalent, this page provides verified electrical parameters, military qualification status (MIL-PRF-19500/500), DO-13 mechanical dimensions, IEC61000-4-2/4-4/4-5 compliance context, and direct alternatives with documented clamping and standoff voltage differences.
Technical Context
The JANTX1N5642A functions as a unidirectional avalanche breakdown device, triggered only under reverse-biased overvoltage conditions above its 21.6 V minimum breakdown voltage (VBR @ 1 mA). Its response time is under 100 ps, enabling effective suppression of ESD, EFT, and fast-rising inductive switching transients before downstream circuitry sustains damage.
It features a hermetic DO-13 (DO-202AA) metal-glass package with cathode connected to case, rated for 1500 W non-repetitive surge handling and 1 W DC power dissipation at ≤125°C lead temperature. Thermal resistance is 50°C/W junction-to-lead (0.375″ from body), supporting robust thermal management in high-reliability board layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Rated Standoff Voltage) | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 5 µA; sets upper limit for protected line voltage. |
| VBR (Breakdown Voltage) | 21.6–25.2 V @ 1 mA - guaranteed avalanche onset range; ensures reliable triggering above system nominal voltage. |
| VC (Clamping Voltage) | 33.2 V @ 45 A - peak voltage seen by protected circuit during 10/1000 µs surge; defines worst-case stress on downstream components. |
| PPP (Peak Pulse Power) | 1500 W - energy-handling capacity for single transients; enables protection against IEC61000-4-5 Class 2 surges with 2 Ω source impedance. |
| TJ Operating Range | –55°C to +175°C - supports operation in extreme environments including engine bays, avionics bays, and space-qualified enclosures. |
| Package | DO-13 (DO-202AA) - hermetically sealed metal-glass through-hole package with cathode-to-case polarity; MIL-STD-750 solderable finish. |
Pinout & Package
DO-13 (DO-202AA) hermetic metal-glass package with axial leads; cathode terminal electrically bonded to case and marked with diode symbol on body. Lead length 1.000–1.625 inches; case diameter 0.215–0.235 inches; weight ≈1.4 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Forward conduction path / low-impedance surge return | Connected to protected circuit ground or low-side reference; carries full surge current during clamping. |
| Cathode (Lead 1 / Case) | Reverse-biased avalanche node | Electrically tied to metal case; must be connected to the line being protected (e.g., +28 V aircraft bus); polarity marking visible on body. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional TVS architecture | Enables precise placement on positive supply rails without forward-conduction interference during normal operation. |
| 1500 W peak pulse power rating | Supports IEC61000-4-5 Class 2 secondary lightning immunity (2 Ω source) in airborne systems without derating. |
| <100 ps response time | Clamps ESD events (IEC61000-4-2 ±8 kV contact) before logic-level ICs experience latch-up or gate oxide rupture. |
| JANTX military qualification | Fully compliant with MIL-PRF-19500/500 for screening, testing, and traceability - required for DoD and NASA avionics BOMs. |
| Hermetic DO-13 packaging | Eliminates moisture ingress and long-term parameter drift; validated for >10-year field life in humid, high-vibration aerospace deployments. |
Applications
| Aerospace Power Bus Protection | Avionics Signal Line Protection |
|---|---|
Use Scenario: Protecting 28 V DC primary power distribution in commercial and military aircraft against load dump, inductive kickback, and secondary lightning coupling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between bus and chassis ground, clamping transients within nanoseconds. Use Value: Limits bus voltage to ≤33.2 V during 45 A surges, preventing damage to MIL-STD-704-compliant power converters and motor controllers. |
Use Scenario: Shielding ARINC 429 data lines and discrete discrete sensor inputs from ESD and RF-induced transients in flight control computers. IC Role / Device Role / Timing Role: Point-of-entry protection on signal connectors, leveraging sub-100 ps response to prevent bit errors and latch-up. Use Value: Maintains signal integrity under ±8 kV IEC61000-4-2 contact discharge while adding <1 pF capacitance to the line. |
| Military Vehicle Electronics | Spacecraft Power Conditioning |
Use Scenario: Safeguarding 270 V DC starter-generator outputs in armored vehicles against EMP-like transients induced by nearby detonations or switching events. IC Role / Device Role / Timing Role: High-energy TVS mounted directly at power entry point with short ground path to vehicle chassis. Use Value: Absorbs 1500 W pulses without degradation, meeting MIL-STD-461G CS117 requirements for conducted transients. |
Use Scenario: Protecting DC-DC converter inputs in LEO satellite power systems exposed to deep-space radiation and solar array switching noise. IC Role / Device Role / Timing Role: Radiation-hardened (per MicroNote 050), hermetically sealed TVS on primary bus input stage. Use Value: Ensures no parametric shift after 100 krad(Si) TID exposure; maintains 20.5 V standoff and 33.2 V clamping performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5642A | Commercial-grade version; same VWM (20.5 V), VC (33.2 V), and DO-13 package but lacks MIL-PRF-19500/500 screening. | Approved for industrial or non-mission-critical avionics; not accepted in DoD or FAA-certified BOMs requiring JANTX traceability. | Select when cost sensitivity outweighs military qualification requirements and environmental stress screening is unnecessary. |
| JANTXV1N5642A | Higher-screening variant: includes extended temperature testing, burn-in, and tighter parametric limits per MIL-PRF-19500/500 Appendix A. | Required for spaceflight, nuclear command/control, and other ultra-high-reliability applications demanding zero latent defects. | Choose when mission-critical failure modes demand full JANTXV-level reliability assurance beyond baseline JANTX. |
Compared with JANTX1N5642A, the 1N5642A omits military screening but retains identical electrical specs and form factor, while JANTXV1N5642A adds rigorous process controls and test coverage - making JANTX the optimal balance of qualification rigor and cost for certified avionics programs.
Availability
JANTX1N5642A is available at Aetrix Electronics and suitable for aerospace power bus protection, avionics signal line hardening, military vehicle electronics, and spacecraft power conditioning requiring stable component supply across extended production lifecycles.
Supply support for JANTX1N5642A 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 and supports the legacy Microsemi TVS portfolio, including the JANTX1N5642A, under strict military and aerospace quality systems.
The JANTX1N5642A belongs to Microchip's high-reliability transient suppression family, engineered specifically for defense, aviation, and space applications where hermetic sealing, radiation tolerance, and MIL-PRF-19500 compliance are mandatory.
FAQ
What is the standoff voltage (VWM) of the JANTX1N5642A?
The JANTX1N5642A has a rated standoff voltage (VWM) of 20.5 V, meaning it remains non-conductive up to this reverse voltage level while drawing less than 5 µA standby current. This value ensures compatibility with 28 V aircraft power systems where nominal voltage may reach 32 V transiently, yet sustained operation stays safely below the clamping threshold. The JANTX1N5642A's VWM is confirmed in Table 1 on page 3 of Microchip's T4-LDS-0096 Rev. 3 datasheet.
Does the JANTX1N5642A meet IEC61000-4-5 for lightning surge protection?
Yes, the JANTX1N5642A is validated for IEC61000-4-5 secondary lightning protection at Class 2 with 2 Ω source impedance, supporting peak pulse currents up to 45 A. Its 1500 W peak pulse power rating and 33.2 V clamping voltage ensure protected circuits remain within safe operating limits during standardized surge waveforms. This capability is explicitly cited in the Applications/Benefits section of the JANTX1N5642A datasheet (page 2).
Is the JANTX1N5642A hermetically sealed, and why does that matter?
Yes, the JANTX1N5642A uses a hermetically sealed DO-13 (DO-202AA) metal-glass package, which prevents moisture ingress and eliminates long-term parameter drift caused by humidity or corrosive atmospheres. This construction is critical for aerospace and military deployments where 20+ year field life, operation at –55°C to +175°C, and immunity to thermal cycling fatigue are required - all verified per MIL-STD-750 test methods. The JANTX1N5642A's hermeticity is specified in the Mechanical and Packaging section (page 2).
How does the JANTX1N5642A differ from the commercial 1N5642A?
The JANTX1N5642A shares identical electrical specifications (VWM = 20.5 V, VC = 33.2 V, PPP = 1500 W) and DO-13 package with the 1N5642A, but undergoes full MIL-PRF-19500/500 screening - including temperature cycling, burn-in, and parametric lot acceptance testing. This makes the JANTX1N5642A acceptable for DoD, FAA, and NASA programs, whereas the 1N5642A is restricted to commercial or non-certified applications. Both are listed in the same datasheet (T4-LDS-0096 Rev. 3).
What is the thermal resistance specification for the JANTX1N5642A?
The JANTX1N5642A has a junction-to-lead thermal resistance (RθJL) of 50°C/W when measured at 0.375 inches (10 mm) from the case body, per the Maximum Ratings table on page 2 of the datasheet. When mounted on an FR4 PCB with 4 mm² copper pads (1 oz), its junction-to-ambient resistance rises to 110°C/W - a key design input for thermal layout validation in high-power surge scenarios. This value directly impacts steady-state derating and surge repetition rate limits.
JANTX1N5642A 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):
- 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)
JANTX1N5642A FAQ
1.How can I place an order for JANTX1N5642A through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N5642A 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 JANTX1N5642A reliable?
The price and inventory of JANTX1N5642A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5642A is usually 5 days.
3.What payment methods are accepted for JANTX1N5642A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5642A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N5642A?
JANTX1N5642A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N5642A 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 JANTX1N5642A?
For technical support, including JANTX1N5642A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5642A requirements.
6.How does Aetrix verify that JANTX1N5642A is sourced from the original manufacturer or authorized distributors?
All JANTX1N5642A 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 JANTX1N5642A meets industry standards.
7.What is the process for return or replacement of JANTX1N5642A?
All JANTX1N5642A units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5642A, 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 JANTX1N5642A part is unused and in its original packaging.
Return procedure for JANTX1N5642A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N5642A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
