Microchip Technology 1N5354AE3/TR13

Overview

1N5354AE3/TR13 from Microsemi is a 5 W axial-leaded silicon Zener diode with nominal regulation voltage of 17 V, ±10% tolerance (A suffix), 70 mA maximum Zener test current (IZT), 2.5 Ω maximum dynamic impedance (ZZ), and 5.8 A maximum Zener current (IZM) at 25 °C with adequate heat sinking. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.

For engineers reviewing the 1N5354AE3/TR13 datasheet, 1N5354AE3/TR13 pinout, 1N5354AE3/TR13 application, or 1N5354AE3/TR13 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (25 °C/W junction-to-lead), surge current rating (5.8 A), reverse leakage performance at VR = 12.2 V, and RoHS-compliant matte-tin plating per MIL-STD-750.

Technical Context

This device operates as a voltage reference by maintaining a stable reverse-biased breakdown voltage across its cathode–anode terminals under controlled DC current. Its 25 °C/W junction-to-lead thermal resistance enables reliable 5 W dissipation when leads are mounted with ≥10 mm length from body, while its 85 °C/W junction-to-ambient rating applies to FR4 PCB mounting with defined copper pad geometry.

The 1N5354AE3/TR13 exhibits 0.35 V maximum voltage regulation (ΔVZ) between 10% and 50% of IZM, confirming tight regulation stability over operating current range. Its 2.5 Ω dynamic impedance (ZZ) at IZT = 70 mA and 1.5 Ω knee impedance (ZZK) at 1 mA support precision reference use where low AC impedance matters.

Key Specifications

Pinout & Package

Package: Axial-leaded T-18 plastic case (Void-free transfer-molded thermosetting epoxy, UL94V-0 rated); cathode indicated by band; RoHS-compliant matte-tin plated leads solderable per MIL-STD-750 Method 2026; weight 0.7 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Compared with 1N5354AE3/TR13, the 1N5354B offers tighter voltage control for precision references, while the SMBJ5354A trades axial-mount robustness and higher surge capacity for surface-mount compatibility-neither is pin-compatible due to differing form factors and thermal paths.

Availability

1N5354AE3/TR13 is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and sensor excitation modules requiring stable component supply with RoHS compliance and JEDEC-standardized performance.

Supply support for 1N5354AE3/TR13 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

Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.

The 1N53xx series was designed for rugged, high-power voltage regulation in mission-critical power systems where long-term stability, surge resilience, and wide temperature operation are essential.

FAQ

What is the Zener voltage tolerance for 1N5354AE3/TR13?

The 1N5354AE3/TR13 has a Zener voltage tolerance of ±10%, indicated by the "A" suffix in the part number. This means its measured VZ at 70 mA test current falls between 15.3 V and 18.7 V at 25 °C. The "e3" suffix confirms RoHS compliance, and "TR13" denotes tape-and-reel packaging per EIA-296 standard. This tolerance is broader than the ±5% offered by the "B" variant but sufficient for general-purpose regulation where cost and availability are prioritized.

How much power can 1N5354AE3/TR13 dissipate continuously?

The 1N5354AE3/TR13 is rated for 5.0 W continuous power dissipation at a lead temperature (TL) of 25 °C with leads extending ≥10 mm from the body. Derating is required above 25 °C at 40 mW/°C, reaching zero dissipation at 150 °C TL. When mounted on an FR4 PCB with specified copper pads, its steady-state rating drops to 1.47 W at 25 °C ambient due to higher junction-to-ambient thermal resistance (85 °C/W). Proper heat sinking is essential to sustain full 5 W operation.

What does the "TR13" suffix mean in 1N5354AE3/TR13?

The "TR13" suffix in 1N5354AE3/TR13 indicates tape-and-reel packaging per EIA-296 standard, with 1,300 units per reel. This format supports automated pick-and-place assembly and ensures consistent orientation (cathode band facing outward) for reliable placement. The "e3" portion confirms RoHS compliance with annealed matte-tin plating, while "A" specifies ±10% Zener voltage tolerance. All three suffixes are integral to the full orderable part number and define physical, environmental, and electrical attributes.

Is 1N5354AE3/TR13 suitable for automotive under-hood applications?

Yes, the 1N5354AE3/TR13 is suitable for automotive under-hood applications due to its guaranteed operating temperature range of -65 °C to +150 °C and qualification to MIL-PRF-19500 screening levels (with appropriate prefix). Its 5 W power rating, 5.8 A surge current capability, and moisture-insensitive Level 1 packaging eliminate bake-out requirements. However, system-level validation-including thermal modeling on the target PCB and vibration testing-is required to confirm reliability in specific engine compartment layouts.

What is the maximum reverse leakage current for 1N5354AE3/TR13?

The maximum reverse leakage current (IR) for 1N5354AE3/TR13 is 0.5 µA at a reverse test voltage (VR) of 12.2 V, as specified in the Microsemi datasheet. This low leakage ensures minimal parasitic current draw in high-impedance reference or clamp circuits. The VR value corresponds to 72% of the nominal 17 V Zener voltage, aligning with JEDEC test conditions for ±10% tolerance devices. Leakage remains well below 1 µA across the full -65 °C to +150 °C range, supporting stable operation in precision analog systems.