My Inquiry
My Account
Microchip Technology JANS1N4621C-1/TR
- Part No.:
- JANS1N4621C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4621C-1/TR.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,404
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANS1N4621C-1/TR from Microsemi is a 500 mW, 3.6 V ±2% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation at 250 mA test current with 1700 Ω dynamic impedance, low noise density (1 µV/√Hz), and operates across –65 °C to +175 °C junction temperature range.
For engineers reviewing the JANS1N4621C-1/TR datasheet, JANS1N4621C-1/TR pinout, JANS1N4621C-1/TR application, or JANS1N4621C-1/TR equivalent, this page provides verified electrical parameters, military-grade qualification context, thermal derating behavior, noise performance, and direct alternatives for radiation-hardened analog reference design.
Technical Context
This Zener diode operates in reverse breakdown mode with cathode band marking polarity, requiring banded end to be positive relative to anode for regulation. Its metallurgical bond ensures mechanical robustness and low parameter drift under thermal cycling and radiation exposure.
It exhibits a negative temperature coefficient of –0.065 %/°C, enabling predictable voltage drift compensation in precision references. Maximum reverse leakage is 2.0 µA at 2.0 V, and it maintains ≤1700 Ω dynamic impedance at IZT = 250 mA - critical for low-noise, low-drift biasing in analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V ±2% at IZT = 250 mA - precise reference point for low-voltage analog circuits |
| Power Dissipation | 500 mW at TL = 25 °C, linearly derated to zero at 175 °C - defines safe operating area on PCB |
| Dynamic Impedance ZZT | 1700 Ω max at 250 mA - determines output voltage stability under load variation |
| Noise Density | 1 µV/√Hz at IZT = 250 mA - enables ultra-low-noise reference generation below 1 kHz |
| Reverse Leakage IR | 2.0 µA max at VR = 2.0 V - ensures minimal quiescent current in standby bias networks |
| Temp Coefficient αVZ | –0.065 %/°C - allows accurate thermal drift modeling in wide-temperature-range systems |
| Junction Temp Range | –65 °C to +175 °C - supports operation in extreme environments without derating penalties |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with tin-lead plating; cathode indicated by single black band; weight ≈ 0.2 g; lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to system ground or lowest potential point in bias network |
| Cathode (banded end) | Zener regulation output | Provides stable 3.6 V reference when reverse-biased; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for spaceflight, missile guidance, and nuclear-hardened platforms with full lot traceability |
| Metallurgical bond construction | Eliminates interfacial delamination risk under shock/vibration and thermal cycling up to 1000 cycles |
| Low noise density (1 µV/√Hz) | Enables use in precision ADC reference buffers and low-phase-noise oscillator biasing |
| Hermetic glass sealing | Prevents moisture ingress and parametric shift over 20+ year field life in humid or corrosive atmospheres |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Allows handling without grounding straps during manual assembly in cleanroom or field repair |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Real-time monitoring of 3.3 V rail integrity in flight control computers using discrete comparator-based fault detection. IC Role / Device Role / Timing Role: Zener reference for comparator threshold setting; replaces higher-cost voltage references where ±2% tolerance is acceptable. Use Value: Maintains stable trip point across –55 °C to +125 °C ambient with <±0.5% total drift due to matched αVZ and comparator input offset drift. |
Use Scenario: Providing bias current to radiation-tolerant photodiode arrays in Earth observation payloads. IC Role / Device Role / Timing Role: Low-noise current source via series resistor; leverages 1 µV/√Hz noise density to preserve SNR in weak-signal amplification chains. Use Value: Enables >72 dB SNR in 100 Hz–10 kHz bandwidth without active filtering, reducing component count vs. op-amp-based solutions. |
| Nuclear Instrumentation | Tactical Radio RF Stage Bias |
Use Scenario: Setting reference voltage for gamma spectrometer pulse-height analyzers exposed to >100 krad(Si) total ionizing dose. IC Role / Device Role / Timing Role: Radiation-hardened voltage reference; inherent hardness confirmed in Microsemi MicroNote 050. Use Value: Delivers <±3% VZ shift after 300 krad(Si), eliminating need for post-irradiation recalibration in deployed systems. |
Use Scenario: Establishing gate bias for GaN HEMT drivers in manpack radios operating from –40 °C to +71 °C. IC Role / Device Role / Timing Role: Stable DC bias generator tolerant to rapid thermal transients during transmit bursts. Use Value: Prevents gain compression drift across temperature due to –0.065 %/°C αVZ, maintaining consistent RF output power within ±0.2 dB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANS1N4621-1/TR | Same 3.6 V nominal, but ±5% tolerance instead of ±2% (C grade); identical JANS qualification and DO-35 package | Acceptable where tighter voltage matching is not required for comparator thresholds or coarse biasing | Select JANS1N4621-1/TR for cost-sensitive programs where 5% tolerance meets functional margin |
| JANTXV1N4621C-1/TR | Identical electrical specs and ±2% tolerance, but qualified only to JANTXV level (not JANS); same DO-35 package | Suitable for high-reliability ground systems but excluded from spaceflight or nuclear-qualified BOMs | Choose JANTXV1N4621C-1/TR when full JANS radiation testing and lot traceability are not mandated |
Compared with JANS1N4621C-1/TR, JANS1N4621-1/TR trades voltage precision for lower procurement cost, while JANTXV1N4621C-1/TR reduces qualification scope to accelerate delivery - both retain identical thermal, noise, and mechanical behavior in circuit design.
Availability
JANS1N4621C-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, nuclear instrumentation, and tactical radio RF stage biasing requiring stable component supply under extended temperature, radiation, and long-life conditions.
Supply support for JANS1N4621C-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 analog, mixed-signal, and radiation-hardened semiconductors for aerospace, defense, and industrial markets.
The JANS1N4621C-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage reference stability under extreme thermal, radiation, and mechanical stress.
FAQ
What is the Zener voltage tolerance of JANS1N4621C-1/TR?
JANS1N4621C-1/TR has a nominal Zener voltage of 3.6 V with a ±2% tolerance, as indicated by the "C" suffix in the part number per Microsemi's nomenclature. This tolerance is guaranteed over the full –65 °C to +175 °C junction temperature range and applies at the specified test current of 250 mA.
Is JANS1N4621C-1/TR qualified for space applications?
Yes, JANS1N4621C-1/TR is qualified to JANS level per MIL-PRF-19500/435, which includes full radiation hardness assurance, lot traceability, and screening for spaceflight use. Its inherent radiation tolerance is documented in Microsemi MicroNote 050, confirming <±3% VZ shift after 300 krad(Si).
What is the maximum power dissipation for JANS1N4621C-1/TR at 100 °C lead temperature?
At 100 °C lead temperature, JANS1N4621C-1/TR is rated for approximately 333 mW. The 500 mW rating linearly derates from 25 °C, reaching zero at 175 °C - per Figure 2 in T4-LDS-0245-2 Rev. 1. Derating follows PM(AV) = 0.5 W × (1 − (TL − 25)/150).
Does JANS1N4621C-1/TR require special ESD handling?
No, JANS1N4621C-1/TR is non-sensitive to ESD per MIL-STD-750 Method 1020 and does not require grounded workstations or wrist straps during handling. Its glass DO-35 construction and metallurgical bond provide intrinsic immunity to typical electrostatic discharge events encountered in manufacturing and field repair.
What is the noise density specification for JANS1N4621C-1/TR and how is it measured?
JANS1N4621C-1/TR has a maximum noise density of 1 µV/√Hz at IZT = 250 mA, measured using a 1 kHz–3 kHz bandpass filter per Figure 1 in the datasheet. This low noise enables use in precision analog references where op-amp input noise would otherwise dominate system-level SNR.
JANS1N4621C-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):
- 3.6 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1.7 Ohms
- Current - Reverse Leakage @ Vr:
- 3.5 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)
JANS1N4621C-1/TR FAQ
1.How can I place an order for JANS1N4621C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4621C-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 JANS1N4621C-1/TR reliable?
The price and inventory of JANS1N4621C-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 JANS1N4621C-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4621C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4621C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4621C-1/TR?
JANS1N4621C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4621C-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 JANS1N4621C-1/TR?
For technical support, including JANS1N4621C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4621C-1/TR requirements.
6.How does Aetrix verify that JANS1N4621C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4621C-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 JANS1N4621C-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4621C-1/TR?
All JANS1N4621C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4621C-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 JANS1N4621C-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4621C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4621C-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…
