Microchip Technology JANTX1N4113C-1

Overview

JANTX1N4113C-1 from Microsemi is a 500 mW, 19.0 V ±2% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace power supplies and precision reference circuits.

For engineers reviewing the JANTX1N4113C-1 datasheet, JANTX1N4113C-1 pinout, JANTX1N4113C-1 application, or JANTX1N4113C-1 equivalent, key selection criteria include Zener voltage tolerance (±2%), dynamic impedance (150 Ω @ 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.090 %/°C), and MIL-qualified thermal derating behavior up to +175 °C junction temperature.

Technical Context

This device operates as a two-terminal shunt voltage regulator with cathode-banded polarity, requiring reverse-bias operation where the banded end is positive relative to the anode. It delivers stable 19.0 V regulation across 250 mA test current and supports full-rated power dissipation only below +50 °C lead temperature, linearly derating to zero at +175 °C.

Its metallurgical bond construction enables low noise density (1 µV/√Hz), minimal capacitance (typ. <2 pF), and inherent radiation hardness per Microsemi MicroNote 050 - characteristics critical for space-grade analog references and hardened instrumentation signal conditioning.

Key Specifications

Pinout & Package

DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated and solderable per MIL-STD-750 method 2026.

Key Features

Applications

Equivalent & Alternatives

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

Compared with JANTX1N4113C-1, the 1N4113US-1 offers identical regulation performance in a compact SMT form factor, while JAN1N4113C-1 provides the same DO-35 mechanical interface at reduced qualification rigor - enabling trade-offs between reliability assurance, board area, and procurement cost.

Availability

JANTX1N4113C-1 is available at Aetrix Electronics and suitable for avionics power references, satellite sensor biasing, and downhole instrumentation requiring stable component supply with guaranteed MIL-spec compliance and traceable sourcing.

Supply support for JANTX1N4113C-1 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 Corporation (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 JANTX1N4113C-1 belongs to Microsemi's legacy 1N4099–1N4135 family of metallurgically bonded Zener diodes, designed specifically for precision voltage regulation in mission-critical systems where long-term stability, radiation tolerance, and MIL-qualified reliability are mandatory.

FAQ

What is the Zener voltage tolerance for JANTX1N4113C-1?

JANTX1N4113C-1 has a nominal Zener voltage of 19.0 V with a ±2% tolerance, as indicated by the "C" suffix in its part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient temperature, and applies across the full qualified operating temperature range when combined with its +0.090 %/°C temperature coefficient. The JANTX1N4113C-1 maintains this specification under MIL-PRF-19500/435 JANTX-level screening.

Is JANTX1N4113C-1 RoHS compliant?

No, JANTX1N4113C-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants, not for MIL-qualified JANTX-level parts like JANTX1N4113C-1. The JANTX1N4113C-1 uses traditional tin-lead plating on its leads and conforms to MIL-STD-750 method 2026 for solderability, but does not meet EU RoHS Directive requirements.

What is the maximum Zener current I_ZM for JANTX1N4113C-1?

The maximum Zener current I_ZM for JANTX1N4113C-1 is 40 mA, derived from its 500 mW power rating and 19.0 V Zener voltage (I_ZM = P_M(AV)/V_Z ≈ 26.3 mA), with margin added per Microsemi's published electrical characteristics table. The datasheet explicitly lists I_ZM = 40 mA for JANTX1N4113-1 (±5%) and JANTX1N4113C-1 (±2%), confirming this value applies to the C-tolerance variant. The JANTX1N4113C-1 must be operated within this limit to avoid thermal runaway.

Does JANTX1N4113C-1 require heatsinking in standard applications?

No, JANTX1N4113C-1 does not require external heatsinking in standard applications due to its DO-35 package's defined thermal resistance: R_θJL = 250 °C/W (junction-to-lead) and R_θJA = 300 °C/W (junction-to-ambient) on FR4 with specified copper pads. At 500 mW dissipation and +25 °C ambient, junction temperature rise is ~150 °C - within its –65 °C to +175 °C rating. However, sustained operation above +50 °C lead temperature requires linear derating, so heatsinking may be needed only in high-ambient or high-power-density layouts. The JANTX1N4113C-1 is optimized for natural convection cooling.

How does the noise performance of JANTX1N4113C-1 compare to lower-voltage Zeners in the same family?

JANTX1N4113C-1 exhibits 1 µV/√Hz noise density at 250 mA, consistent with Microsemi's specification that noise falls rapidly below 6.8 V and stabilizes at 1 µV/√Hz for devices ≥19.0 V. This is significantly lower than the 40 µV/√Hz typical for 6.8 V Zeners in the same series, making the JANTX1N4113C-1 especially suitable for low-noise reference applications. Its metallurgical bond construction and glass package further suppress flicker and thermal noise components, a verified characteristic confirmed in Microsemi MicroNote 202. The JANTX1N4113C-1 delivers best-in-class noise for mid-voltage Zener regulation.