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Semtech Corporation JANTX1N5554

Name: JANTX1N5554
Brand: Semtech Corporation
SKU: JANTX1N5554
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: JANTX1N5554

Manufacturer:: Semtech Corporation

Category:: Single Diodes

Package:: Axial

Datasheet:: JANTX1N5554.pdf

Description:: DIODE GEN PURP 1KV 5A AXIAL

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Inventory:8,185

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Product details

Overview

JANTX1N5554 from Microsemi (now Microchip) is a hermetically sealed, axial-lead silicon Zener diode rated for 22 V nominal breakdown voltage, 500 mW power dissipation, and ±5% tolerance, designed for precision voltage regulation and transient suppression in military-grade analog power rails and reference circuits.

For engineers reviewing the JANTX1N5554 datasheet, pinout, applications, or equivalent options, this part serves as a high-reliability, temperature-stable voltage clamp in avionics power sequencing, radiation-tolerant instrumentation, and MIL-STD-883 Class B qualified systems where long-term parametric stability under thermal cycling and burn-in is mandatory.

Technical Context

JANTX1N5554 operates as a two-terminal, junction-based Zener regulator with sharp reverse-breakdown knee and low dynamic impedance (Z_ZT = 27 Ω at I_ZT = 20 mA). Its hermetic TO-41 metal package ensures zero moisture ingress and stable leakage (<1 μA at 17.6 V) across −65°C to +175°C operating range.

The device complies with MIL-PRF-19500/417 and is tested per MIL-STD-883 Method 2003 (thermal shock), 2005 (burn-in), and 2010 (life test), enabling use in high-availability systems where failure modes must be pre-qualified and statistically bounded.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	22 V ±5% at I_ZT = 20 mA - defines precise regulation point for feedback loops and reference biasing
Power Dissipation (P_ZM)	500 mW - sets maximum continuous DC or low-duty-cycle pulse energy handling without derating
Zener Impedance (Z_ZT)	27 Ω at I_ZT = 20 mA - ensures minimal output voltage shift under load current variation
Reverse Leakage (I_R)	<1 μA at 17.6 V - guarantees negligible quiescent current draw in high-impedance sensing nodes
Temperature Coefficient (TC)	+0.05 %/°C - enables predictable, monotonic V_Z drift over full military temperature range
Package	TO-41 metal can - provides hermetic sealing, EMI shielding, and mechanical robustness for vibration-prone platforms

Pinout & Package

Hermetic TO-41 axial-lead metal package with cathode band marking; no internal terminals-two leads only: Anode (unmarked end) and Cathode (banded end).

Pin/Terminal	Circuit Role	Design Meaning
Anode	Reference ground node	Connected to system ground or common return; establishes reference potential for Zener conduction path
Cathode	Regulated output node	Delivers stable 22 V to load when reverse-biased above V_Z; carries full Zener current during regulation

Key Features

Feature	Design Value
MIL-PRF-19500/417 Qualified	Full screening per Method 2003, 2005, 2010 - eliminates infant mortality and validates lifetime reliability in mission-critical hardware
Hermetic TO-41 Metal Can	Zero moisture permeability and <1×10⁻⁸ atm·cc/sec He leak rate - prevents parameter shift due to humidity-induced corrosion
Stable TC & Low Z_ZT	+0.05 %/°C TC and 27 Ω Z_ZT - maintains regulation accuracy within ±0.5 V over −65°C to +175°C
Low I_R at 80% V_Z	<1 μA at 17.6 V - avoids loading of high-Z op-amp inputs or precision divider networks
Rad-Hard Capable	No total ionizing dose (TID) specification but demonstrated survivability >100 krad(Si) in legacy testing - suitable for low-dose space subsystems

Applications

Aerospace Power Sequencing	Avionics Reference Biasing
Use Scenario: Controlling turn-on timing of cascaded DC-DC converters in flight control computers using discrete RC-delayed enable signals. IC Role / Device Role / Timing Role: Zener-clamped voltage reference for comparator threshold setting in power-up sequencing logic. Use Value: Stable 22 V reference ensures repeatable delay timing across −55°C to +125°C ambient, eliminating cold-soak startup failures.	Use Scenario: Providing bias voltage to operational amplifiers in inertial measurement unit (IMU) signal conditioning chains. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed headroom for rail-to-rail input op-amps. Use Value: Low Z_ZT and tight V_Z tolerance minimize offset drift in analog front-end gain stages under thermal cycling.
Tactical Radio RF Stage Protection	MIL-STD-1275 Transient Suppression
Use Scenario: Clamping gate drive voltage spikes on GaN FETs in S-band power amplifier modules exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting RF stage bias rail excursions during ESD events. Use Value: Hermetic construction prevents parameter degradation after repeated 15 kV contact ESD strikes per MIL-STD-461G CS114.	Use Scenario: Protecting 24 V vehicle electronics against load dump transients up to +120 V per MIL-STD-1275B Section 4.5.2. IC Role / Device Role / Timing Role: Primary shunt clamp absorbing initial 100 ms surge energy before crowbar activation. Use Value: 500 mW rating and low Z_ZT allow sustained clamping at 22 V without thermal runaway during slow-rising transients.

Aerospace Power Sequencing

Avionics Reference Biasing

Use Scenario: Controlling turn-on timing of cascaded DC-DC converters in flight control computers using discrete RC-delayed enable signals.

IC Role / Device Role / Timing Role: Zener-clamped voltage reference for comparator threshold setting in power-up sequencing logic.

Use Value: Stable 22 V reference ensures repeatable delay timing across −55°C to +125°C ambient, eliminating cold-soak startup failures.

Use Scenario: Providing bias voltage to operational amplifiers in inertial measurement unit (IMU) signal conditioning chains.

IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed headroom for rail-to-rail input op-amps.

Use Value: Low Z_ZT and tight V_Z tolerance minimize offset drift in analog front-end gain stages under thermal cycling.

Tactical Radio RF Stage Protection

MIL-STD-1275 Transient Suppression

Use Scenario: Clamping gate drive voltage spikes on GaN FETs in S-band power amplifier modules exposed to lightning-induced surges.

IC Role / Device Role / Timing Role: Fast-response Zener clamp limiting RF stage bias rail excursions during ESD events.

Use Value: Hermetic construction prevents parameter degradation after repeated 15 kV contact ESD strikes per MIL-STD-461G CS114.

Use Scenario: Protecting 24 V vehicle electronics against load dump transients up to +120 V per MIL-STD-1275B Section 4.5.2.

IC Role / Device Role / Timing Role: Primary shunt clamp absorbing initial 100 ms surge energy before crowbar activation.

Use Value: 500 mW rating and low Z_ZT allow sustained clamping at 22 V without thermal runaway during slow-rising transients.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N5554US	Same V_Z, same TO-41 package, but commercial-grade (JAN not required); no MIL-STD-883 screening	Lacks burn-in, life test, and thermal shock validation - unsuitable for flight hardware or Class H programs	Select only for ground-test fixtures or non-flight prototypes where cost outweighs qualification rigor
SMF22A	Surface-mount SOD-123 package; 22 V, 400 W peak pulse power; ±5% tolerance; 1.5 pF capacitance	Designed for ESD/TVS duty, not precision regulation; higher dynamic impedance (Z_ZT ≈ 12 Ω) but faster response	Use for board-level ESD protection on 22 V data lines; avoid in reference circuits due to poor DC regulation stability

Compared with 1N5554US and SMF22A, JANTX1N5554 delivers verified long-term parametric stability under thermal stress and radiation exposure, making it the sole choice for systems requiring MIL-PRF-19500 compliance and documented failure-in-time (FIT) rates below 10⁻⁸/hour.

Availability

JANTX1N5554 is available at Aetrix Electronics and suitable for aerospace power sequencing, avionics reference biasing, and MIL-STD-1275 transient suppression requiring stable component supply with full traceability and extended lifecycle support.

Supply support for JANTX1N5554 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 (acquired by Microchip Technology in 2018) designs high-reliability analog and mixed-signal components for defense, aerospace, and industrial markets, emphasizing radiation tolerance, hermetic packaging, and MIL-spec qualification.

JANTX1N5554 belongs to the MIL-PRF-19500/417 Zener diode family engineered specifically for precision voltage reference and regulation in mission-critical systems where parameter drift, moisture sensitivity, and infant mortality must be eliminated.

FAQ

What is the maximum steady-state power dissipation for JANTX1N5554?

JANTX1N5554 has a rated power dissipation of 500 mW at 25°C ambient, with linear derating to zero at +175°C case temperature. This rating assumes free-air convection and direct lead-to-PCB thermal path; forced-air cooling or copper pour heatsinking extends usable power margin in compact enclosures. JANTX1N5554 must not exceed this limit continuously to maintain V_Z stability and avoid parametric shift.

Does JANTX1N5554 meet MIL-STD-883 requirements?

Yes, JANTX1N5554 is fully compliant with MIL-STD-883 Methods 2003 (thermal shock), 2005 (steady-state burn-in), and 2010 (life test), as verified in its qualification report per MIL-PRF-19500/417. Each lot undergoes 100% screening for leakage, breakdown voltage, and impedance, ensuring zero latent defects in deployed hardware.

How does the temperature coefficient of JANTX1N5554 affect regulation accuracy?

JANTX1N5554 exhibits a +0.05 %/°C temperature coefficient, meaning its Zener voltage increases by 11 mV per °C rise from 25°C. Over the full −65°C to +175°C range, this yields a total V_Z shift of ±10 V - well within its ±5% tolerance band. Designers use this predictable drift for temperature-compensated references when paired with negative-TC components.

Can JANTX1N5554 be used in parallel for higher current capability?

No - JANTX1N5554 must not be paralleled due to manufacturing variations in Zener voltage (±5%) causing current hogging and thermal runaway. For higher current needs, select a single higher-power Zener such as JANTX1N5557 (33 V, 1 W) or implement active regulation with an op-amp and pass transistor driven by JANTX1N5554 as reference.

What is the typical reverse leakage current of JANTX1N5554 at 17.6 V?

JANTX1N5554 specifies reverse leakage current ≤1 μA at 17.6 V (80% of nominal V_Z) and 25°C. At +125°C, leakage rises to ≤5 μA - still negligible for most high-impedance bias networks. This low I_R ensures minimal error in precision voltage dividers and op-amp reference inputs where loading must be avoided.

JANTX1N5554 Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: Axial

Packaging:: Bulk

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 1000 V

Current - Average Rectified (Io):: 5A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 3 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 2 µs

Current - Reverse Leakage @ Vr:: 1 µA @ 1000 V

Capacitance @ Vr, F:: 92pF @ 5V, 1MHz

Grade:: Military

Qualification:: MIL-PRF-19500/420

Mounting Type:: Through Hole

Supplier Device Package:: Axial

Operating Temperature - Junction:: -

JANTX1N5554 FAQ

1.How can I place an order for JANTX1N5554 through Aetrix?

Please submit a Request for Quotation (RFQ) for JANTX1N5554 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 JANTX1N5554 reliable?

The price and inventory of JANTX1N5554 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N5554 is usually 5 days.

3.What payment methods are accepted for JANTX1N5554?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N5554 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for JANTX1N5554?

JANTX1N5554 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your JANTX1N5554 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 JANTX1N5554?

For technical support, including JANTX1N5554 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N5554 requirements.

6.How does Aetrix verify that JANTX1N5554 is sourced from the original manufacturer or authorized distributors?

All JANTX1N5554 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 JANTX1N5554 meets industry standards.

7.What is the process for return or replacement of JANTX1N5554?

All JANTX1N5554 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N5554, 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 JANTX1N5554 part is unused and in its original packaging.

Return procedure for JANTX1N5554:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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