My Inquiry
My Account
Microchip Technology 1N4465DUS/TR
- Part No.:
- 1N4465DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, A
- Datasheet:
-
1N4465DUS/TR.pdf
- Description:
- DIODE ZENER 10V 1.5W D5A
- Quantity:
- Payment:
- Shipping:
Inventory:6,187
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N4465DUS/TR from Microsemi is a hermetically sealed, voidless glass MELF surface-mount Zener diode rated for 1.5 W steady-state power dissipation, with a nominal Zener voltage of 10.0 V at 25 mA test current, ±1% tolerance (denoted by 'D'), and maximum dynamic impedance of 5 Ω at IZT; it is qualified to MIL-PRF-19500/406 JANTXV level for use in high-reliability voltage regulation within aerospace power conditioning circuits.
For engineers reviewing the 1N4465DUS/TR datasheet, 1N4465DUS/TR pinout, 1N4465DUS/TR application, or 1N4465DUS/TR equivalent, this part delivers military-grade stability across -65 °C to +175 °C junction temperature, low leakage (<0.25 µA at 8.0 V), and robust ESD immunity per MIL-STD-750 Method 1020 - critical for avionics biasing and reference design validation.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with Zener voltage specified at IZT = 25 mA and knee current IZK = 0.25 mA. Its thermal resistance junction-to-end cap is 20 °C/W, enabling stable regulation under transient load conditions when mounted on thermally conductive substrates.
The 1N4465DUS/TR uses a Category I internal metallurgical bond and triple-layer passivation, ensuring long-term reliability in radiation-exposed environments per MicroNote 050. It exhibits a typical temperature coefficient near zero crossing between 5–6 V, with 10.0 V falling in the positive TC region (~+0.06 %/°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 10.0 V at IZT = 25 mA - defines primary regulation point for precision reference applications |
| Zener Tolerance | ±1% - achieved via 'D' suffix; enables tight-set bias points without post-calibration |
| Steady-State Power Dissipation | 1.5 W at TA = 25 °C - supports continuous regulation in compact, conduction-cooled layouts |
| Dynamic Impedance (ZZT) | 5 Ω max at IZT - ensures minimal output voltage shift under varying load currents |
| Maximum Reverse Leakage (IR) | 0.25 µA at VR = 8.0 V - guarantees low standby power loss in high-impedance sensing nodes |
| Junction Temperature Range | -65 °C to +175 °C - validated for operation in extended-environment military and space platforms |
| Forward Voltage (VF) | 1.0 V max at IF = 200 mA - confirms low-loss forward conduction during transient fault conditions |
Pinout & Package
Package: A (D-5A) MELF - hermetically sealed voidless glass body with tungsten slugs, cathode indicated by single polarity band, weight 193 mg, dimensions BD = 0.091–0.103 in (2.31–2.62 mm), BL = 0.168–0.200 in (4.28–5.08 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in shunt regulator topology | Connected to system ground or lowest potential node; carries full load current during regulation |
| Cathode | Zener breakdown terminal / high-side connection | Connected to input supply rail; maintains regulated voltage at cathode relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass construction | Eliminates moisture ingress and internal delamination risks over 20+ year field life in humid or vacuum environments |
| Category I metallurgical bond | Ensures mechanical integrity under shock/vibe up to 100 g and thermal cycling from -65 °C to +175 °C |
| MIL-PRF-19500/406 JANTXV qualification | Validated screening includes burn-in, temperature cycling, and lot acceptance testing per military standard |
| Triple-layer passivation | Provides corrosion resistance against sulfur-containing atmospheres and salt fog exposure |
| RoHS-compliant option (commercial grade) | Matte tin termination available for lead-free assembly compatibility without compromising solder joint reliability |
Applications
| Aerospace Power Conditioning | Defense Radar Bias Supply |
|---|---|
Use Scenario: Regulating auxiliary supply rails in phased-array radar transceiver modules exposed to wide thermal swings and vibration. IC Role / Device Role / Timing Role: Shunt voltage reference for op-amp feedback networks and DAC reference buffers. Use Value: Maintains ±0.1% output stability over -55 °C to +125 °C ambient due to low TC and hermetic sealing. | Use Scenario: Providing stable gate bias to GaN HEMT drivers in pulsed RF amplifiers subject to EMI and radiation. IC Role / Device Role / Timing Role: Precision Zener clamp protecting gate drive circuitry from overvoltage transients. Use Value: Withstands >10 krad(Si) total ionizing dose and rejects ESD events per MIL-STD-750 Method 1020. |
| Satellite Onboard Computer Reference | Tactical Radio Frequency Front-End |
Use Scenario: Generating stable 10.0 V reference for ADCs and sensor signal chains in LEO satellite payloads. IC Role / Device Role / Timing Role: Primary voltage reference source for analog subsystems requiring long-term drift <10 ppm/1000 hrs. Use Value: Achieves <0.5% parametric shift after 1000-hr life test at 150 °C junction temperature. | Use Scenario: Stabilizing local oscillator tuning voltage in SDR transceivers operating in mobile battlefield environments. IC Role / Device Role / Timing Role: Low-noise Zener element in active loop filters for PLL-based frequency synthesizers. Use Value: 5 Ω ZZT minimizes phase noise contribution while supporting 25 mA regulation current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4465US | Same package and VZ, but ±5% tolerance (no suffix) instead of ±1% | Acceptable where calibration or trimming compensates for initial tolerance | Select when cost sensitivity outweighs need for tight initial accuracy |
| SMF10A | Surface-mount SOD-123 package, 1.0 W rating, ±5% tolerance, lower surge capability | Limited to commercial-grade industrial controls with less stringent reliability requirements | Choose only for non-military designs where MIL-spec screening and hermeticity are not required |
Compared with 1N4465US and SMF10A, the 1N4465DUS/TR provides superior long-term stability, radiation hardness, and thermal resilience - making it the sole choice for JANTXV-qualified systems where failure is not an option.
Availability
1N4465DUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, defense radar bias supply, and satellite onboard computer reference applications requiring stable component supply across extended product lifecycles and rigorous environmental qualification.
Supply support for 1N4465DUS/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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4460US–1N4496US series was designed specifically to replace legacy axial-leaded Zeners in surface-mount military systems while maintaining identical electrical behavior and exceeding MIL-PRF-19500/406 reliability requirements.
FAQ
What does the 'D' suffix in 1N4465DUS/TR signify?
The 'D' suffix in 1N4465DUS/TR indicates ±1% Zener voltage tolerance at 25 °C, verified per MIL-PRF-19500/406 test methods. This tighter tolerance enables direct use in precision reference circuits without trimming or calibration - a key differentiator from the standard ±5% 1N4465US variant.
Is 1N4465DUS/TR RoHS compliant?
The 1N4465DUS/TR is offered in both RoHS-compliant (matte tin termination) and non-RoHS (Sn/Pb) versions. RoHS compliance applies only to commercial-grade units; JANTXV-qualified units retain Sn/Pb terminations to meet MIL-STD-202 and MIL-STD-750 solderability requirements.
What is the maximum continuous Zener current (IZM) for 1N4465DUS/TR?
The maximum continuous Zener current IZM for 1N4465DUS/TR is 300 mA at TA = 25 °C, derived from its 1.5 W power rating and 10.0 V nominal Zener voltage (IZM = PD/VZ). Derating is required above 25 °C per the Figure 2 power derating curve.
Can 1N4465DUS/TR be used in place of axial-leaded 1N4465?
No - 1N4465DUS/TR is a surface-mount MELF device (D-5A package), while the axial-leaded 1N4465 uses DO-41 packaging. Though electrically identical in VZ and tolerance, their mechanical form factors, thermal paths, and mounting methods are incompatible without PCB redesign.
What is the Zener knee current (IZK) specification for 1N4465DUS/TR?
The Zener knee current IZK for 1N4465DUS/TR is 0.25 mA, defined as the current at which the device enters the regulated breakdown region. At this point, dynamic impedance ZZK is 500 Ω max, ensuring predictable turn-on behavior for low-current reference applications.
1N4465DUS/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, A
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±1%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 300 nA @ 8 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
1N4465DUS/TR FAQ
1.How can I place an order for 1N4465DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4465DUS/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 1N4465DUS/TR reliable?
The price and inventory of 1N4465DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4465DUS/TR is usually 5 days.
3.What payment methods are accepted for 1N4465DUS/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4465DUS/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4465DUS/TR?
1N4465DUS/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4465DUS/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 1N4465DUS/TR?
For technical support, including 1N4465DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4465DUS/TR requirements.
6.How does Aetrix verify that 1N4465DUS/TR is sourced from the original manufacturer or authorized distributors?
All 1N4465DUS/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 1N4465DUS/TR meets industry standards.
7.What is the process for return or replacement of 1N4465DUS/TR?
All 1N4465DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4465DUS/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 1N4465DUS/TR part is unused and in its original packaging.
Return procedure for 1N4465DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4465DUS/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…
