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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Microchip Technology JANTXV1N4965CUS/TR

Name: JANTXV1N4965CUS/TR
Brand: Microchip Technology
SKU: JANTXV1N4965CUS/TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: JANTXV1N4965CUS/TR

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: SQ-MELF, E

Datasheet:: JANTXV1N4965CUS/TR.pdf

Description:: DIODE ZENER 20V 5W E-MELF

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Product details

Overview

JANTXV1N4965CUS/TR from Microsemi is a military-grade, hermetically sealed surface-mount Zener diode rated for 5 W power dissipation at 140 °C end-cap temperature, with a nominal Zener voltage of 20 V ±2% (C-suffix), dynamic impedance of 4.5 Ω at 65 mA test current, and operating junction temperature range of −65 °C to +175 °C. It serves as a precision voltage reference and overvoltage clamp in high-reliability aerospace power conditioning circuits.

For engineers reviewing the JANTXV1N4965CUS/TR datasheet, JANTXV1N4965CUS/TR pinout, JANTXV1N4965CUS/TR application, or JANTXV1N4965CUS/TR equivalent, this part delivers verified MIL-PRF-19500/356 Class V performance, voidless-glass construction, Category I metallurgical bonding, and radiation-hardened behavior per MicroNote 050 - critical for flight-critical analog regulation and ESD-immune biasing.

Technical Context

This device operates in reverse breakdown mode with tightly controlled Zener voltage regulation across 10–50% of IZM (395 mA), exhibiting ΔVZ ≤ 1.5 V under that current swing. Its thermal resistance is 7 °C/W (junction-to-end-cap), enabling stable regulation up to 175 °C junction temperature when mounted on thermally optimized copper pads.

The "E" package (D-5B) uses tungsten slugs and copper end caps with Sn/Pb finish, supporting tape-and-reel automated placement per EIA-481-B. Polarity is marked by cathode band; no surface marking is applied per specification.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	20 V ±2% at 65 mA - enables precise 20 V rail stabilization with minimal tolerance-induced drift in feedback loops.
Power Dissipation	5 W @ T_EC = 140 °C - supports continuous operation in high-ambient avionics enclosures without forced cooling.
Dynamic Impedance (Z_ZT)	4.5 Ω @ I_ZT = 65 mA - ensures low output impedance for effective ripple suppression in regulated supplies.
Max Reverse Leakage (I_R)	2 μA @ V_R = 15.2 V - guarantees negligible standby current draw in low-power sensor bias networks.
Surge Current (I_ZSM)	8.0 A @ 8.3 ms - withstands lightning-induced transients per DO-160 Section 22 Level 3 without degradation.
Temp Coefficient (αV_Z)	+0.085 %/°C - provides predictable, positive drift for temperature-compensated reference designs.
Forward Voltage (V_F)	1.50 V @ 1.0 A - allows use as a low-drop rectifier or clamping diode in dual-role protection circuits.

Pinout & Package

The JANTXV1N4965CUS/TR uses the "E" package (also designated D-5B), a hermetically sealed voidless glass surface-mount case with tungsten internal slugs and copper end caps finished in Sn/Pb. Cathode polarity is indicated by a visible band on the glass body; no alphanumeric marking is present.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal in forward bias; connected to ground or lower-potential node in Zener regulation.	Provides low-resistance path for forward conduction; must be routed with adequate copper area for 1 A surge handling.
Cathode	Current exit terminal in forward bias; connected to regulated voltage node in reverse-bias Zener operation.	Carries full Zener current during regulation; requires thermal pad connection to PCB plane for 5 W dissipation.

Key Features

Feature	Design Value
Voidless hermetic glass seal	Eliminates moisture ingress and internal delamination risk over 20+ year mission life in vacuum or humid environments.
Category I metallurgical bond	Ensures mechanical integrity under 20,000 g shock and 10–2000 Hz vibration per MIL-STD-883 Method 2007.
Nonsensitive to ESD	Withstands ≥4 kV HBM per MIL-STD-750 Method 1020 without parameter shift or catastrophic failure.
Radiation hardness	Qualified to 100 krad(Si) total ionizing dose (TID) with <5% V_Z shift, per Microsemi MicroNote 050.
Tape-and-reel packaging	EIA-481-B compliant carrier enables high-yield SMT assembly with zero tombstoning risk due to symmetric mass distribution.

Applications

Aerospace Power Bus Regulation	Satellite Sensor Bias Reference
Use Scenario: Stabilizing 20 V primary bus in LEO satellite power distribution units exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Primary voltage reference and overvoltage clamp protecting downstream DC-DC converters. Use Value: Maintains ±2% regulation across −65 °C to +125 °C ambient with no derating below 5 W, ensuring uninterrupted payload operation.	Use Scenario: Providing stable 20 V bias to radiation-tolerant CMOS image sensor arrays in deep-space probes. IC Role / Device Role / Timing Role: Precision analog reference source for pixel ADC front-ends requiring sub-10 ppm/°C drift stability. Use Value: Delivers <2 μA leakage at 15.2 V and +0.085%/°C tempco, minimizing dark-current error accumulation over multi-year missions.
Avionics Flight Control Interface	Military Radar Receiver Protection
Use Scenario: Clamping analog input signals in fly-by-wire actuator controllers subjected to lightning-induced surges per DO-160 Section 22. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector interface before signal conditioning circuitry. Use Value: Absorbs 8.0 A 8.3 ms surges without parametric shift, preserving signal integrity and preventing false actuation commands.	Use Scenario: Protecting low-noise amplifier inputs in airborne radar receivers from RF coupling and EMP events. IC Role / Device Role / Timing Role: Fast-response shunt regulator limiting input voltage to 20 V ±2% during transient overvoltage events. Use Value: Achieves 4.5 Ω dynamic impedance at 65 mA, reducing RF impedance mismatch and preserving receiver NF below 1.2 dB.

Aerospace Power Bus Regulation

Satellite Sensor Bias Reference

Use Scenario: Stabilizing 20 V primary bus in LEO satellite power distribution units exposed to thermal cycling and radiation.

IC Role / Device Role / Timing Role: Primary voltage reference and overvoltage clamp protecting downstream DC-DC converters.

Use Value: Maintains ±2% regulation across −65 °C to +125 °C ambient with no derating below 5 W, ensuring uninterrupted payload operation.

Use Scenario: Providing stable 20 V bias to radiation-tolerant CMOS image sensor arrays in deep-space probes.

IC Role / Device Role / Timing Role: Precision analog reference source for pixel ADC front-ends requiring sub-10 ppm/°C drift stability.

Use Value: Delivers <2 μA leakage at 15.2 V and +0.085%/°C tempco, minimizing dark-current error accumulation over multi-year missions.

Avionics Flight Control Interface

Military Radar Receiver Protection

Use Scenario: Clamping analog input signals in fly-by-wire actuator controllers subjected to lightning-induced surges per DO-160 Section 22.

IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector interface before signal conditioning circuitry.

Use Value: Absorbs 8.0 A 8.3 ms surges without parametric shift, preserving signal integrity and preventing false actuation commands.

Use Scenario: Protecting low-noise amplifier inputs in airborne radar receivers from RF coupling and EMP events.

IC Role / Device Role / Timing Role: Fast-response shunt regulator limiting input voltage to 20 V ±2% during transient overvoltage events.

Use Value: Achieves 4.5 Ω dynamic impedance at 65 mA, reducing RF impedance mismatch and preserving receiver NF below 1.2 dB.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
JANTXV1N4965US/TR	Same 20 V nominal rating but ±5% tolerance (no C-suffix); higher max leakage (5 μA @ 15.2 V).	Acceptable where tighter regulation not required; lower cost for non-critical bias rails.	Select JANTXV1N4965US/TR only if system-level tolerance budget permits ±5% V_Z variation.
CDP1N4965US/TR	Commercial-grade version (non-JANTXV); same 20 V ±2%, but not radiation-hardened or MIL-qualified.	Valid for ground-based industrial controls with <10 krad TID exposure; not suitable for spaceflight.	Choose CDP1N4965US/TR only for cost-sensitive terrestrial applications with full traceability but no radiation or extended temp requirements.

Compared with JANTXV1N4965US/TR and CDP1N4965US/TR, the JANTXV1N4965CUS/TR uniquely combines 2% tolerance, Category I bonding, and radiation hardness - making it the sole option for flight-critical 20 V references where parameter stability under extreme stress is non-negotiable.

Availability

JANTXV1N4965CUS/TR is available at Aetrix Electronics and suitable for aerospace power regulation, satellite sensor biasing, avionics surge protection, and military radar receiver design requiring stable component supply across extended product lifecycles.

Supply support for JANTXV1N4965CUS/TR 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 defense, aerospace, and industrial markets.

The JANTXV1N4965CUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356 qualified Zener series, engineered specifically for voltage regulation in mission-critical systems where failure is not an option.

FAQ

What is the Zener voltage tolerance of JANTXV1N4965CUS/TR?

The JANTXV1N4965CUS/TR has a nominal Zener voltage of 20 V with a tolerance of ±2%, indicated by the "C" suffix in the part number. This tight tolerance is confirmed in the Electrical Characteristics table on page 2 of the SD44A.pdf datasheet, where V_Z is specified as 20 V at I_ZT = 65 mA with ΔV_Z ≤ 1.5 V between 10% and 50% of I_ZM. The JANTXV1N4965CUS/TR achieves this via process-controlled doping and post-trim validation per MIL-PRF-19500/356.

Is JANTXV1N4965CUS/TR suitable for space applications?

Yes, the JANTXV1N4965CUS/TR is qualified for space applications: it meets MIL-PRF-19500/356 Class V requirements, features Category I metallurgical bonds, and is documented as inherently radiation-hard to 100 krad(Si) with <5% V_Z shift per Microsemi MicroNote 050. Its −65 °C to +175 °C operating range and voidless hermetic seal further support long-duration orbital missions.

What is the maximum continuous Zener current for JANTXV1N4965CUS/TR?

The maximum continuous Zener current (I_ZM) for JANTXV1N4965CUS/TR is 395 mA, derived from its 5 W power rating and 20 V nominal Zener voltage (I_ZM = P_Z/V_Z = 5 W / 20 V). This value is validated in the Electrical Characteristics table, where I_ZM is listed as 395 mA at 25 °C ambient, with linear derating to zero at +175 °C junction temperature.

Does JANTXV1N4965CUS/TR have ESD protection built-in?

Yes, the JANTXV1N4965CUS/TR is explicitly characterized as nonsensitive to ESD per MIL-STD-750 Method 1020, with no parameter shift or failure observed at ≥4 kV HBM. This immunity stems from its voidless-glass hermetic seal and triple-layer passivation, eliminating surface charge accumulation paths that cause gate oxide damage in silicon devices.

What package type does JANTXV1N4965CUS/TR use?

JANTXV1N4965CUS/TR uses the "E" package (also known as D-5B), a surface-mount hermetically sealed voidless glass case with tungsten internal slugs and copper end caps finished in Sn/Pb. Its dimensions and pad layout are defined in the Package Dimensions section of SD44A.pdf, and it complies with EIA-481-B tape-and-reel standards for automated placement.

JANTXV1N4965CUS/TR Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: -

Package/Case:: SQ-MELF, E

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 20 V

Tolerance:: ±2%

Power - Max:: 5 W

Impedance (Max) (Zzt):: 4.5 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 15.2 V

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 1 A

Operating Temperature:: -65°C ~ 175°C (TJ)

Grade:: Military

Qualification:: MIL-PRF-19500/356

Mounting Type:: Surface Mount

Supplier Device Package:: E-MELF

JANTXV1N4965CUS/TR FAQ

1.How can I place an order for JANTXV1N4965CUS/TR through Aetrix?

Please submit a Request for Quotation (RFQ) for JANTXV1N4965CUS/TR 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 JANTXV1N4965CUS/TR reliable?

The price and inventory of JANTXV1N4965CUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTXV1N4965CUS/TR is usually 5 days.

3.What payment methods are accepted for JANTXV1N4965CUS/TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4965CUS/TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for JANTXV1N4965CUS/TR?

JANTXV1N4965CUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your JANTXV1N4965CUS/TR 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 JANTXV1N4965CUS/TR?

For technical support, including JANTXV1N4965CUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4965CUS/TR requirements.

6.How does Aetrix verify that JANTXV1N4965CUS/TR is sourced from the original manufacturer or authorized distributors?

All JANTXV1N4965CUS/TR 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 JANTXV1N4965CUS/TR meets industry standards.

7.What is the process for return or replacement of JANTXV1N4965CUS/TR?

All JANTXV1N4965CUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4965CUS/TR, 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 JANTXV1N4965CUS/TR part is unused and in its original packaging.

Return procedure for JANTXV1N4965CUS/TR:

1.Submit a request within 90 days.

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

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