Microchip Technology JANTX1N5633A

Overview

JANTX1N5633A 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 features 9.0 V minimum breakdown voltage (V_BR), 8.10 V rated standoff voltage (V_WM), 15.0 V maximum clamping voltage (V_C) at 100 A peak pulse current, and 1500 W peak pulse power rating per 10/1000 µs waveform.

For engineers reviewing the JANTX1N5633A datasheet, JANTX1N5633A pinout, JANTX1N5633A application, or JANTX1N5633A equivalent, this part delivers sub-100 ps response time, -55°C to +175°C operating temperature range, and MIL-PRF-19500/500 JANTX qualification - critical for avionics surge protection, ESD hardening, and secondary lightning immunity per IEC 61000-4-5.

Technical Context

The JANTX1N5633A operates as a unidirectional avalanche diode, entering controlled breakdown when transient voltage exceeds its 8.10 V standoff threshold. Its hermetic DO-13 metal-glass package ensures stable thermal resistance (50°C/W junction-to-lead) and radiation hardness per MicroNote 050.

It clamps transients to ≤15.0 V within <100 ps while sustaining 100 A peak pulse current (10/1000 µs), with standby leakage ≤10 µA at V_WM. The device is polarity-marked with cathode connected to case, enabling direct chassis-grounded protection schemes in high-integrity power and signal lines.

Key Specifications

Pinout & Package

DO-13 (DO-202AA) hermetically sealed metal-glass package with axial leads; cathode terminal electrically bonded to case and marked by diode symbol on body.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient suppression applications.

Compared with JANTX1N5633A, the 1N5633A offers identical electrical performance at lower cost but no military screening, while JANTXV1N5633A adds rigorous process controls and extended reliability testing - making JANTX1N5633A the optimal balance of certified ruggedness and production scalability for defense electronics.

Availability

JANTX1N5633A is available at Aetrix Electronics and suitable for aircraft power distribution, avionics signal line protection, and ground vehicle engine control requiring stable component supply across extended product lifecycles.

Supply support for JANTX1N5633A 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-tolerant components for aerospace, defense, and industrial markets.

The JANTX1N5633A belongs to Microchip's legacy TVS diode family engineered for mission-critical surge immunity - emphasizing hermetic packaging, fast response, and MIL-qualified consistency in extreme thermal and radiation environments.

FAQ

What is the standoff voltage rating of the JANTX1N5633A?

The JANTX1N5633A has a rated standoff voltage (V_WM) of 8.10 V, meaning it remains nonconductive up to this reverse voltage level under normal operation. This value is selected to exceed typical 9 V nominal supply rails while providing margin against ripple and tolerance drift. The JANTX1N5633A maintains leakage current ≤10 µA at this voltage, ensuring minimal power loss in always-on protection circuits.

How does the JANTX1N5633A differ from commercial-grade 1N5633A?

The JANTX1N5633A differs from the commercial 1N5633A through full MIL-PRF-19500/500 qualification, including temperature cycling, mechanical shock, vibration, and lot acceptance testing. While both share identical electrical specs (V_WM, V_C, P_PP), the JANTX1N5633A provides traceable lot documentation, extended temperature validation (-55°C to +175°C), and screening for latent defects - essential for defense and aviation programs.

Is the JANTX1N5633A suitable for IEC 61000-4-5 secondary lightning protection?

Yes, the JANTX1N5633A is validated for secondary lightning protection per IEC 61000-4-5 with 2 Ω, 12 Ω, and 42 Ω source impedances. Specifically, it meets Class 4 requirements under 2 Ω source (up to 100 A peak pulse), making it appropriate for protecting sensitive electronics in vehicle and infrastructure systems exposed to induced surges from nearby lightning strikes.

What is the thermal resistance of the JANTX1N5633A and how does it affect layout?

The JANTX1N5633A has a junction-to-lead thermal resistance of 50°C/W when measured at 0.375 inches (10 mm) from the case. This requires PCB layout with wide copper traces (≥1 mm width) and thermal relief pads to dissipate energy during repetitive surges. For sustained pulse trains, derating curves in the datasheet must be applied - the JANTX1N5633A supports ≤1 W DC dissipation only below +125°C lead temperature.

Does the JANTX1N5633A have radiation hardness certification?

Yes, the JANTX1N5633A is inherently radiation-hardened per Microsemi MicroNote 050, demonstrating tolerance to total ionizing dose (TID) levels exceeding 100 krad(Si). This characteristic stems from its hermetic DO-13 metal-glass construction and silicon process, making the JANTX1N5633A suitable for low-earth orbit (LEO) satellite power conditioning and nuclear instrumentation where single-event effects must be minimized.