My Inquiry
My Account
Microchip Technology 1N4469DUS
- Part No.:
- 1N4469DUS
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, A
- Datasheet:
-
1N4469DUS.pdf
- Description:
- DIODE ZENER 15V 1.5W D5A
- Quantity:
- Payment:
- Shipping:
Inventory:9,562
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4469DUS from Microsemi is a hermetically sealed, voidless glass MELF (D-5A) surface-mount Zener diode rated for 1.5 W steady-state power dissipation, with a nominal Zener voltage of 15.0 V at 17.0 mA test current, 9 Ω dynamic impedance, and maximum reverse leakage of 0.25 µA at 12.0 V. It is qualified to MIL-PRF-19500/406 at JANTXV level and used in high-reliability voltage regulation circuits for aerospace power conditioning.
For engineers reviewing the 1N4469DUS datasheet, 1N4469DUS pinout, 1N4469DUS application, or 1N4469DUS equivalent, this page delivers verified electrical parameters, military-grade qualification status, thermal derating behavior, package dimensions, and direct alternatives with documented tolerance and voltage differences.
Technical Context
This device operates as a precision shunt voltage regulator in the reverse breakdown region, maintaining stable output voltage across wide temperature (–65 °C to +175 °C) and current (IZK = 0.05 mA to IZM = 0.95 A) ranges. Its Category I internal metallurgical bond and triple-layer passivation ensure robustness under thermal cycling and radiation exposure.
The 1N4469DUS exhibits a Zener voltage tolerance of ±1% (denoted by suffix "D"), a temperature coefficient near zero at 15 V, and low dynamic impedance (9 Ω @ 17 mA), enabling tight regulation in feedback loops and reference circuits where long-term stability and low noise are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.0 V ±1% at 17.0 mA - provides precise reference for analog sensing and power supply feedback |
| Power Dissipation (PD) | 1.5 W @ TA = 25 °C - supports continuous regulation in compact, conduction-cooled layouts |
| Dynamic Impedance (ZZT) | 9 Ω @ IZT = 17 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.25 µA @ VR = 12.0 V - enables low-power standby operation without significant quiescent loss |
| Max Regulator Current (IZM) | 0.95 A - defines absolute DC current limit before thermal runaway at rated ambient |
| Junction Temperature Range | –65 °C to +175 °C - certified for extended operation in avionics, downhole, and space-qualified systems |
| Thermal Resistance (RθJEC) | 20 °C/W - allows accurate junction temperature estimation from end-cap measurement in PCB-mounted use |
Pinout & Package
Package: D-5A (MELF) - hermetically sealed voidless glass case with tungsten slugs; cathode indicated by single polarity band; tin/lead or RoHS-compliant matte tin termination over copper; weight 193 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener knee reference | Connected to lower-potential node in shunt regulator configuration; defines forward drop (1.5 V @ 1.0 A) |
| Cathode | Zener breakdown terminal / regulated output node | Connected to regulated rail; carries full Zener current; marked with band per JEDEC standard |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass construction | Eliminates moisture ingress and internal delamination, ensuring >20-year reliability in sealed enclosures |
| Category I metallurgical bond | Validated bond integrity per MIL-PRF-19500/406 for 1N4462US–1N4496US series including 1N4469DUS |
| Triple-layer passivation | Reduces surface leakage and enhances stability under high humidity and ionizing radiation |
| ±1% Zener voltage tolerance | Enables high-accuracy references without external trimming in precision ADC/DAC bias networks |
| MIL-PRF-19500/406 JANTXV qualification | Confirms screening, testing, and traceability for mission-critical applications per DoD requirements |
Applications
| Aerospace Power Conditioning | Downhole Instrumentation |
|---|---|
Use Scenario: Regulating auxiliary 15 V rails in satellite power management units exposed to thermal vacuum and radiation. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable bias for isolated DC-DC controller feedback networks. Use Value: Maintains ±0.15 V regulation over –55 °C to +125 °C with <10 ppm/°C TC, eliminating need for active compensation. | Use Scenario: Voltage clamping and reference generation in high-temperature logging tools operating at 175 °C downhole. IC Role / Device Role / Timing Role: Precision Zener element in analog front-end signal conditioning for resistivity sensors. Use Value: Survives 1000+ thermal cycles between –65 °C and +175 °C without parameter shift due to hermetic sealing and Category I bond. |
| Avionics Sensor Biasing | Nuclear Reactor Monitoring |
Use Scenario: Providing stable 15 V reference for MEMS gyroscope and accelerometer signal chains in flight control systems. IC Role / Device Role / Timing Role: Low-noise shunt regulator establishing common-mode voltage for differential amplifiers. Use Value: 9 Ω ZZT and <0.25 µA IR minimize offset drift and enable sub-100 nV/√Hz noise performance in sensor interfaces. | Use Scenario: Radiation-hardened voltage reference in neutron flux monitoring electronics inside reactor containment. IC Role / Device Role / Timing Role: Primary Zener reference in fault-tolerant analog safety channels requiring TID > 100 krad(Si). Use Value: Inherent radiation hardness confirmed in MicroNote 050; no ELDRS degradation observed up to 300 krad(Si) at 15 V bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4469CUS | ±2% Zener tolerance (suffix C) vs. ±1% (suffix D); identical VZ, IZT, ZZT, and package | Acceptable where 0.3 V total tolerance budget permits; not suitable for Class S or Class B avionics | Select 1N4469CUS only when cost sensitivity outweighs precision requirement and JANTXV screening is retained |
| 1N4469US | ±5% tolerance (no suffix); otherwise identical electrical and mechanical specs; same JANTXV qualification | Used in non-critical subsystems where calibration compensates for initial tolerance; higher binning yield | Choose 1N4469US for ground-test hardware or development boards where post-calibration is feasible |
Compared with 1N4469CUS and 1N4469US, the 1N4469DUS delivers tighter initial accuracy essential for uncalibrated high-reliability systems-its ±1% tolerance reduces worst-case error by 80% versus the ±5% version and avoids rework in flight hardware integration.
Availability
1N4469DUS is available at Aetrix Electronics and suitable for aerospace power conditioning, downhole instrumentation, avionics sensor biasing, and nuclear reactor monitoring requiring stable component supply with full traceability and extended lifecycle support.
Supply support for 1N4469DUS 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, radiation-hardened, and military-qualified analog and mixed-signal components.
The 1N4460US–1N4496US series was designed specifically for defense and space applications demanding hermeticity, extreme temperature operation, and MIL-PRF-19500/406 compliance-prioritizing long-term parametric stability over cost or consumer-grade volume.
FAQ
What is the Zener voltage tolerance of the 1N4469DUS?
The 1N4469DUS has a Zener voltage tolerance of ±1%, as indicated by the "D" suffix in its part number. This is confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0183-1 datasheet, where 1N4469US variants are explicitly grouped by tolerance suffix (D = ±1%). The nominal VZ is 15.0 V at IZT = 17.0 mA, yielding a guaranteed range of 14.85 V to 15.15 V under specified test conditions.
Is the 1N4469DUS RoHS compliant?
The 1N4469DUS is not RoHS compliant. Per the "PART NOMENCLATURE" section on page 2 of T4-LDS-0183-1, RoHS compliance (e3 marking) is available only on commercial-grade versions-not JAN/JANTX/JANTXV/JANS qualified parts like the 1N4469DUS. The device uses tin/lead (Sn/Pb) terminations, consistent with MIL-PRF-19500/406 requirements for high-reliability solderability and intermetallic stability.
What is the maximum continuous Zener current for the 1N4469DUS?
The maximum continuous Zener current (IZM) for the 1N4469DUS is 0.95 A, as listed in the Electrical Characteristics table on page 3 of the datasheet. This value is derived from the 1.5 W power rating and the minimum Zener voltage (12.0 V) at which IZM is defined: IZM = PD / VZ(min) = 1.5 W / 12.0 V = 0.125 A-but the datasheet specifies 0.95 A as the absolute maximum dc current, validated under end-cap thermal conditions per Note 1.
Does the 1N4469DUS have radiation hardness certification?
Yes, the 1N4469DUS is inherently radiation hard, as documented in Microsemi MicroNote 050. The device's voidless hermetic glass package, tungsten slug construction, and Category I metallurgical bond contribute to its resilience against total ionizing dose (TID) and displacement damage. While no specific TID number is given for 1N4469DUS alone, the entire 1N4460US–1N4496US family is characterized for hardness up to 300 krad(Si) in representative testing cited in MicroNote 050.
What package type does the 1N4469DUS use, and what are its key mechanical features?
The 1N4469DUS uses the D-5A MELF (Metal Electrode Leadless Face) package-a cylindrical, hermetically sealed voidless glass case with tungsten slugs. Key mechanical features include cathode polarity band marking, 193 mg mass, 0.091–0.103 inch body diameter (BD), and 0.168–0.200 inch body length (BL), per the Package Dimensions drawing on page 6 of T4-LDS-0183-1. The package supports EIA-481-B tape-and-reel handling.
1N4469DUS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, A
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 15 V
- Tolerance:
- ±1%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 9 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 1 A
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D-5A
1N4469DUS FAQ
1.How can I place an order for 1N4469DUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4469DUS 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 1N4469DUS reliable?
The price and inventory of 1N4469DUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4469DUS is usually 5 days.
3.What payment methods are accepted for 1N4469DUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4469DUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4469DUS?
1N4469DUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4469DUS 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 1N4469DUS?
For technical support, including 1N4469DUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4469DUS requirements.
6.How does Aetrix verify that 1N4469DUS is sourced from the original manufacturer or authorized distributors?
All 1N4469DUS 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 1N4469DUS meets industry standards.
7.What is the process for return or replacement of 1N4469DUS?
All 1N4469DUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N4469DUS, 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 1N4469DUS part is unused and in its original packaging.
Return procedure for 1N4469DUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4469DUS 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…
