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Microchip Technology JAN1N5646A
- Part No.:
- JAN1N5646A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- DO-202AA, DO-13, Axial
- Datasheet:
-
JAN1N5646A.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO13
- Quantity:
- Payment:
- Shipping:
Inventory:7,691
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Product details
Overview
JAN1N5646A 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 a 29.1 V rated standoff voltage (VWM), 32.4–34.2 V breakdown voltage (V(BR)) at 1 mA, clamps transients to ≤52.0 V at 29 A peak pulse current, and delivers 1500 W peak pulse power (10/1000 µs). It is commonly deployed in avionics power rail protection against secondary lightning surges per IEC61000-4-5 with 42 Ω source impedance (Class 4).
For engineers reviewing the JAN1N5646A datasheet, JAN1N5646A pinout, JAN1N5646A application, or JAN1N5646A equivalent, this part serves as a MIL-PRF-19500/500 qualified unidirectional TVS with verified radiation hardness, sub-100 ps response time, and DO-13 mechanical robustness - critical for ESD/EFT protection (IEC61000-4-2/-4-4), inductive switching transient suppression, and airborne system surge resilience.
Technical Context
The JAN1N5646A operates as a silicon avalanche diode, entering controlled reverse-biased breakdown above its VWM of 29.1 V to shunt transient energy away from sensitive circuitry. Its DO-13 hermetic metal-glass package ensures stable thermal resistance (50 °C/W junction-to-lead) and operation across –55 °C to +175 °C.
It exhibits a temperature coefficient of breakdown voltage (αV(BR)) of 0.099 %/°C and maintains ≤5 μA standby leakage at VWM. With <100 ps response time and 1500 W peak pulse rating, it meets stringent surge immunity requirements for Class 4 secondary lightning (42 Ω source) and ESD events up to ±15 kV contact discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Rated Standoff Voltage) | 29.1 V - Maximum continuous reverse voltage before conduction; sets minimum operating margin for protected 24 VDC systems. |
| V(BR) @ I(BR) | 32.4–34.2 V @ 1 mA - Confirmed avalanche onset range; ensures predictable clamping initiation under fast transients. |
| VC @ IPP | 52.0 V @ 29 A - Maximum clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by downstream ICs. |
| PPP (Peak Pulse Power) | 1500 W - Sustains single high-energy surges without failure; validated per JEDEC test waveform. |
| Response Time | <100 ps - Enables effective suppression of ESD and fast-rising RF-induced transients before damage occurs. |
| Operating Temp Range | –55 °C to +175 °C - Supports deployment in engine bays, avionics bays, and other extreme-temperature environments. |
| Radiation Hardness | Inherently radiation hard per Microsemi MicroNote 050 - Qualified for TID tolerance in space and nuclear environments. |
Pinout & Package
DO-13 (DO-202AA) hermetically sealed metal-glass package with axial leads; cathode connected to case and marked by diode symbol on body. Lead length 25.4–41.28 mm; case diameter 5.46–5.97 mm; weight ≈1.4 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 2) | Transient return path | Connected to ground or low-impedance reference; carries full surge current during clamping. |
| Cathode (Lead 1 / Case) | Protected line connection | Electrically tied to case and marked polarity symbol; connects to line being protected (e.g., 24 V rail). |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic DO-13 metal package | Prevents moisture ingress and parameter drift over lifetime; essential for 20+ year aerospace deployments. |
| MIL-PRF-19500/500 qualification (JAN level) | Meets screening, testing, and traceability requirements for defense-critical systems including lot traceability and burn-in. |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay coil collapse or lightning coupling without degradation. |
| ≤5 μA ID @ VWM | Minimizes standby power loss and avoids false triggering in low-power sensor interfaces. |
| Sub-100 ps response time | Outperforms polymer-based suppressors and MOVs in ESD event capture; protects CMOS inputs before latch-up. |
Applications
| Aerospace Power Distribution | Avionics Data Bus Protection |
|---|---|
Use Scenario: Protecting 28 VDC main bus in commercial aircraft against load dump and secondary lightning induced surges (IEC61000-4-5, 42 Ω source, Class 4). IC Role / Device Role / Timing Role: Unidirectional TVS placed between bus and chassis ground to clamp transients before reaching DC-DC converters and motor controllers. Use Value: Limits bus overvoltage to ≤52.0 V during 29 A surges, preserving MIL-STD-704 compliance and preventing field-failure of flight-critical power modules. |
Use Scenario: Shielding ARINC 429 receiver inputs from ESD events and RF rectification in cockpit display units. IC Role / Device Role / Timing Role: Low-leakage TVS mounted directly at connector entry point to absorb ±15 kV contact discharge per IEC61000-4-2. Use Value: Sub-100 ps response prevents data corruption and latch-up in line receivers, maintaining bit-error-rate integrity under repeated ESD stress. |
| Military Vehicle Electronics | Satellite Power Conditioning |
Use Scenario: Safeguarding 24 V control circuits in armored vehicle ECUs exposed to inductive switching noise from solenoid actuators. IC Role / Device Role / Timing Role: Standoff-voltage-matched TVS on power input to microcontroller subsystems, referenced to chassis ground. Use Value: 29.1 V VWM avoids false triggering during normal 24 V transients while clamping 1500 W spikes to safe levels for 3.3 V logic rails. |
Use Scenario: Protecting DC-DC converter inputs in LEO satellite power management units subject to total ionizing dose (TID) and single-event effects. IC Role / Device Role / Timing Role: Radiation-hardened unidirectional TVS on primary bus input, leveraging inherent hardness per MicroNote 050. Use Value: Eliminates need for additional rad-hard shielding or derating margins, reducing mass and complexity in constrained payload envelopes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N5646A | Higher screening level (JANTXV vs JAN); tighter parametric limits and extended environmental testing per MIL-PRF-19500/500. | Required for mission-critical launch systems and nuclear command/control where zero defect tolerance applies. | Select when full JANTXV qualification (including thermal shock and vibration) is mandated by program spec. |
| 1N5646A (commercial) | No military screening; same electrical specs but no MIL-STD-750 testing, lot traceability, or radiation assurance. | Suitable for ground-test equipment or non-flight prototypes where cost and lead time outweigh qualification needs. | Choose for development boards or non-certified subsystems where JAN-level reliability is not contractually required. |
Compared with JAN1N5646A, JANTXV1N5646A adds enhanced screening for extreme reliability, while 1N5646A offers identical electrical performance without military qualification - enabling trade-offs between cost, schedule, and assurance level in avionics BOMs.
Availability
JAN1N5646A is available at Aetrix Electronics and suitable for aerospace power distribution, avionics data bus protection, and military vehicle electronics requiring stable component supply, long-term obsolescence management, and full MIL-PRF-19500 traceability.
Supply support for JAN1N5646A 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-hardened components for aerospace, defense, and industrial markets.
The JAN1N5646A belongs to Microchip's legacy TVS diode family engineered for extreme-environment transient suppression - emphasizing hermetic packaging, military qualification, and fast-response avalanche behavior in safety-critical systems.
FAQ
What is the standoff voltage (VWM) specification for JAN1N5646A?
The JAN1N5646A has a rated standoff voltage (VWM) of 29.1 V, meaning it remains non-conductive up to this reverse voltage under normal operation. This value is selected to safely accommodate 24 VDC nominal systems with margin for ripple and transients while avoiding false triggering. The VWM is confirmed in the Electrical Characteristics table on page 3 of the T4-LDS-0096 datasheet.
Is JAN1N5646A suitable for IEC61000-4-5 secondary lightning protection?
Yes, JAN1N5646A is explicitly rated for Class 4 secondary lightning protection per IEC61000-4-5 with a 42 Ω source impedance, as stated in the Applications/Benefits section (page 2). Its 1500 W peak pulse power and 52.0 V clamping voltage at 29 A ensure compliance with the 10/1000 µs surge waveform requirements for this class.
Does JAN1N5646A have radiation hardness certification?
Yes, JAN1N5646A is inherently radiation hard per Microsemi MicroNote 050, a documented radiation effects characterization report. This makes it suitable for low-earth orbit (LEO) satellite power systems and nuclear instrumentation where total ionizing dose (TID) tolerance is required - no additional rad-hard qualification testing is needed.
What is the thermal resistance specification for JAN1N5646A?
JAN1N5646A has a thermal resistance of 50 °C/W junction-to-lead when measured at 0.375 inches (10 mm) from the case body, per the Maximum Ratings table (page 2). This value enables accurate thermal modeling in high-power surge scenarios and supports reliable operation up to +175 °C ambient when properly heatsinked via the metal case.
How does the DO-13 package of JAN1N5646A differ from plastic TVS diodes?
The DO-13 package of JAN1N5646A is a hermetically sealed metal-glass construction, unlike plastic axial packages such as the 1N6267 series. This provides superior moisture resistance, long-term parameter stability, and mechanical ruggedness - critical for aerospace and military deployments where 20+ year field life and thermal cycling reliability are mandatory.
JAN1N5646A 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30A
- 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)
JAN1N5646A FAQ
1.How can I place an order for JAN1N5646A through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N5646A 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 JAN1N5646A reliable?
The price and inventory of JAN1N5646A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N5646A is usually 5 days.
3.What payment methods are accepted for JAN1N5646A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N5646A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N5646A?
JAN1N5646A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N5646A 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 JAN1N5646A?
For technical support, including JAN1N5646A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N5646A requirements.
6.How does Aetrix verify that JAN1N5646A is sourced from the original manufacturer or authorized distributors?
All JAN1N5646A 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 JAN1N5646A meets industry standards.
7.What is the process for return or replacement of JAN1N5646A?
All JAN1N5646A units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N5646A, 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 JAN1N5646A part is unused and in its original packaging.
Return procedure for JAN1N5646A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N5646A Tags
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