My Inquiry
My Account
Microchip Technology JANS1N4623-1/TR
- Part No.:
- JANS1N4623-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4623-1/TR.pdf
- Description:
- DIODE ZENER 4.3V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,154
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANS1N4623-1/TR from Microsemi is a 500 mW, 4.3 V Zener voltage regulator diode in DO-35 glass axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers 4.3 V regulation at 250 mA test current, with 1% tolerance (D suffix), 1600 Ω dynamic impedance, and 2.0 µA max reverse leakage at 3.5 V.
For engineers reviewing the JANS1N4623-1/TR datasheet, JANS1N4623-1/TR pinout, JANS1N4623-1/TR application, or JANS1N4623-1/TR equivalent, key selection criteria include its JANS-level radiation hardness, low noise density (1 µV/√Hz), metallurgically bonded construction, and stable temperature coefficient (–0.050 %/°C) across –65 °C to +175 °C operating range.
Technical Context
This device operates as a precision shunt voltage reference in feedback loops and bias networks, leveraging its tightly controlled 4.3 V Zener voltage and low dynamic impedance (1600 Ω at IZT = 250 mA) to maintain regulation under varying load and temperature conditions. Its metallurgical bond ensures mechanical robustness and long-term stability in harsh environments.
The JANS1N4623-1/TR exhibits a negative temperature coefficient of –0.050 %/°C, enabling predictable drift compensation in analog circuits. Its hermetically sealed DO-35 package supports operation up to +175 °C junction temperature and meets MIL-STD-750 ESD immunity requirements (Method 1020).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.3 V at 250 mA - defines precise regulation point for reference and clamp circuits |
| Zener Tolerance | ±1% - enables high-accuracy voltage setting without external trimming |
| Power Rating | 500 mW - supports stable regulation in low-power analog subsystems |
| Dynamic Impedance ZZT | 1600 Ω at 250 mA - determines output voltage variation under load transients |
| Reverse Leakage IR | 2.0 µA max at 3.5 V - ensures minimal quiescent current in standby mode |
| Temp Coefficient αVZ | –0.050 %/°C - provides predictable, linear voltage drift over temperature |
| Noise Density ND | 1 µV/√Hz - critical for low-noise reference and sensor excitation circuits |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode band marking; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes return path for Zener current |
| Cathode | Regulated output node | Banded end; supplies stable 4.3 V when reverse-biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Guarantees performance and reliability for spaceflight and nuclear-hardened systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and vibration stress |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 |
| Low noise density | 1 µV/√Hz enables use in precision instrumentation and ADC reference buffers |
| Hermetic DO-35 sealing | Prevents moisture ingress and parameter shift in humid or corrosive atmospheres |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Monitoring 28 V DC bus voltage in flight control computers using resistor-divider + comparator architecture. IC Role / Device Role / Timing Role: Shunt reference providing stable 4.3 V threshold for overvoltage detection. Use Value: JANS1N4623-1/TR's ±1% tolerance and –0.050 %/°C TC ensure trip-point accuracy remains within ±2.5% over –55 °C to +125 °C. | Use Scenario: Supplying bias voltage to radiation-tolerant photodiode amplifiers in Earth observation payloads. IC Role / Device Role / Timing Role: Low-noise Zener reference establishing precision gain-setting node. Use Value: 1 µV/√Hz noise density prevents signal-to-noise degradation in sub-picoamp photocurrent measurement. |
| Nuclear Instrumentation | Tactical Radio RF Stage Bias |
Use Scenario: Calibrating gamma spectrometer front-end ADCs in reactor monitoring systems. IC Role / Device Role / Timing Role: Primary voltage reference for DAC-based offset correction circuitry. Use Value: JANS1N4623-1/TR's JANS qualification and inherent radiation hardness eliminate need for shielding or derating. | Use Scenario: Setting gate bias for GaN HEMT drivers in manpack radio power amplifiers. IC Role / Device Role / Timing Role: Stable shunt regulator maintaining fixed bias point despite supply ripple. Use Value: 1600 Ω dynamic impedance limits bias voltage shift to <12 mV under 10 mA load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4623US-1 | Same electrical specs, but in DO-213AA surface-mount package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or high-vibration mounting | Select when board space is constrained and automated placement is required |
| JANTXV1N4623-1 | Identical Zener parameters, but qualified only to JANTXV level (not JANS); lower radiation tolerance margin | Approved for airborne avionics but not space-grade missions requiring full JANS screening | Select for cost-sensitive military platforms where full JANS testing is not mandated |
Compared with JANS1N4623-1/TR, the 1N4623US-1 offers identical regulation performance in a smaller footprint but sacrifices mechanical ruggedness and hand-solderability, while the JANTXV1N4623-1 reduces procurement cost and lead time at the expense of guaranteed radiation hardness and extended temperature validation.
Availability
JANS1N4623-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and nuclear instrumentation requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JANS1N4623-1/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 Corporation (now part of Microchip Technology) designs high-reliability semiconductors for aerospace, defense, and industrial markets, with expertise in radiation-hardened and mil-spec discrete components.
The JANS1N4623-1/TR belongs to Microsemi's legacy 1N46xx-1 Zener diode family, engineered specifically for mission-critical voltage regulation where parameter stability, hermeticity, and qualification rigor outweigh cost sensitivity.
FAQ
What is the Zener voltage tolerance for JANS1N4623-1/TR?
JANS1N4623-1/TR has a nominal Zener voltage of 4.3 V with ±1% tolerance, indicated by the "D" suffix in its nomenclature per MIL-PRF-19500/435. This tight tolerance is verified during JANS-level screening and ensures consistent regulation across production lots used in flight-critical systems.
Does JANS1N4623-1/TR require derating above 25 °C ambient?
Yes, JANS1N4623-1/TR must be linearly derated from 500 mW starting at 25 °C ambient temperature, reaching zero power dissipation at +175 °C. Derating follows the curve in Figure 2 of T4-LDS-0245-2, ensuring safe operation under thermal stress in sealed enclosures or high-density assemblies.
Is JANS1N4623-1/TR RoHS compliant?
No, JANS1N4623-1/TR is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4623-1e3). JANS-level parts retain tin-lead plating per MIL-STD-750 to ensure solder joint reliability under thermal cycling and mechanical shock.
What is the maximum reverse leakage current for JANS1N4623-1/TR?
JANS1N4623-1/TR specifies a maximum reverse leakage current (IR) of 2.0 µA at VR = 3.5 V, measured at 25 °C. This low leakage supports ultra-low-power bias networks in battery-operated telemetry modules and ensures minimal error contribution in high-impedance reference dividers.
How is polarity marked on JANS1N4623-1/TR?
JANS1N4623-1/TR uses a cathode band painted on the glass body to indicate polarity. The banded end is the cathode and must be held positive relative to the anode to achieve Zener regulation. This marking complies with JEDEC DO-35 standards and is visible under standard optical inspection.
JANS1N4623-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.6 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4623-1/TR FAQ
1.How can I place an order for JANS1N4623-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4623-1/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 JANS1N4623-1/TR reliable?
The price and inventory of JANS1N4623-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4623-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4623-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4623-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4623-1/TR?
JANS1N4623-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4623-1/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 JANS1N4623-1/TR?
For technical support, including JANS1N4623-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4623-1/TR requirements.
6.How does Aetrix verify that JANS1N4623-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4623-1/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 JANS1N4623-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4623-1/TR?
All JANS1N4623-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4623-1/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 JANS1N4623-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4623-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4623-1/TR Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
