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Microchip Technology 1N6352US/TR
- Part No.:
- 1N6352US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, B
- Datasheet:
-
1N6352US/TR.pdf
- Description:
- DIODE ZENER 150V 500MW SQ-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:7,981
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Product details
Overview
1N6352US/TR from Microsemi is a military-qualified, voidless hermetically sealed glass Zener diode with nominal Zener voltage of 150 V, ±5% tolerance, 0.5 W power rating, and 2.8 Ω dynamic impedance at 1000 mA test current-designed for precision voltage regulation in high-reliability aerospace and defense power supply circuits.
For engineers reviewing the 1N6352US/TR datasheet, 1N6352US/TR pinout, 1N6352US/TR application, or 1N6352US/TR equivalent, this part supports stable reference generation under wide temperature (–65 °C to +175 °C), high surge immunity (114 A @ 8.3 ms), and radiation-hardened operation per MicroNote 050-critical for avionics, satellite power conditioning, and hardened instrumentation.
Technical Context
This Zener diode operates in reverse breakdown with tightly controlled voltage regulation (ΔVZ = 7.00 V over 10–50% IZM at 25 °C) and low noise density (0.065 µV/√Hz, 1–3 kHz). Its internal Category I metallurgical bond ensures mechanical robustness and long-term stability under thermal cycling and vibration.
The device uses a B-SQ MELF (glass cylindrical) package with copper end caps and Sn/Pb finish, rated for 260 °C soldering (10 s), and exhibits a positive temperature coefficient (+0.110 %/°C) above 100 V-enabling predictable drift compensation in precision references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 150 V nominal at 1000 mA - provides stable reference for high-voltage DC-DC feedback loops |
| Power Rating (PD) | 0.5 W @ TEC = 150 °C - requires thermal management via end-cap mounting on heatsink or metal-core PCB |
| Dynamic Impedance (ZZT) | 2.8 Ω @ IZ = 1000 mA - ensures minimal output voltage shift under load transients |
| Max Surge Current (IZSM) | 114 A @ 8.3 ms square wave - withstands lightning-induced surges in MIL-STD-461-compliant systems |
| Temp Coefficient (αVZ) | +0.110 %/°C - enables predictable voltage drift correction in wide-temperature-range designs |
| Junction Temp Range | –65 °C to +175 °C - qualified for extreme-environment deployment without derating penalties |
| Reverse Leakage (IR) | 10 µA max @ VR = 122 V, 150 °C - guarantees low standby power loss in always-on safety monitors |
Pinout & Package
Hermetically sealed B-SQ MELF glass package (0.070–0.085 in diameter × 0.165–0.195 in length); cathode indicated by single black band; copper end caps with Sn/Pb finish; weight: 0.0945 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-impedance return path | Connected to system ground or lower-potential rail during normal forward bias operation |
| Cathode | Zener regulation terminal / high-impedance reference node | Connected to regulated voltage node; band-marked end must face higher potential in reverse-bias configuration |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal delamination-ensures >20-year reliability in vacuum or humid environments |
| Category I metallurgical bond | Guarantees mechanical integrity under 50 g shock and 20 g RMS vibration per MIL-STD-883 Method 2007 |
| JANS-level qualification | Fully compliant with MIL-PRF-19500/533 - certified for spaceflight and nuclear command/control systems |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) ≥ 100 krad(Si) per MicroNote 050 - no shielding required in LEO missions |
| ESD immunity | Non-sensitive per MIL-STD-750 Method 1020 - survives >4 kV HBM without parameter shift |
Applications
| Aerospace Power Regulation | Defense System Reference |
|---|---|
Use Scenario: Regulating 150 V bus in satellite power distribution units where failure is catastrophic. IC Role / Device Role / Timing Role: Primary Zener reference in isolated DC-DC converter feedback network. Use Value: Maintains ±0.75 V regulation over –55 °C to +125 °C ambient with <10 ppm/°C drift after burn-in. | Use Scenario: Providing stable voltage reference for missile guidance sensor biasing in high-G launch environments. IC Role / Device Role / Timing Role: Precision shunt regulator for analog front-end signal conditioning circuitry. Use Value: Survives 20,000 g shock pulses while retaining VZ within ±1.5% of nominal after mechanical stress. |
| Nuclear Instrumentation | Avionics Monitoring |
Use Scenario: Biasing radiation detector photomultiplier tubes in reactor control systems requiring zero field-failure history. IC Role / Device Role / Timing Role: High-stability shunt reference in ultra-low-noise HV supply. Use Value: Delivers 0.065 µV/√Hz noise floor and <0.01% long-term drift over 15-year service life. | Use Scenario: Overvoltage protection and reference clamping in fly-by-wire flight control electronics. IC Role / Device Role / Timing Role: Dual-role Zener clamp and calibration reference in ADC input protection stage. Use Value: Clamps transients up to 114 A (8.3 ms) while maintaining reference accuracy within ±0.5% post-surge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6352US | Same electrical specs and package; TR suffix denotes tape-and-reel packaging only | No functional difference-identical die, bond, and qualification level | Select 1N6352US/TR when automated SMT placement is required; use 1N6352US for manual or bulk assembly |
| SMF150A | Surface-mount SOD-123 package; 150 V, 1 W rating; ±5% tolerance; RoHS-only; no MIL-qualification | Lacks JANS qualification, radiation hardness, and hermetic seal-suitable only for commercial industrial use | Choose SMF150A only for cost-sensitive, non-mission-critical applications where MIL-spec compliance is not required |
Compared with 1N6352US/TR, the 1N6352US offers identical performance in bulk form but lacks tape-and-reel logistics; SMF150A trades military reliability for surface-mount convenience and higher power, making it unsuitable for aerospace or defense deployments requiring MIL-PRF-19500/533 certification.
Availability
1N6352US/TR is available at Aetrix Electronics and suitable for aerospace power regulation, defense system reference design, and nuclear instrumentation requiring stable component supply across extended product lifecycles and stringent environmental certifications.
Supply support for 1N6352US/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 ICs, RF solutions, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N63xxUS series belongs to Microsemi's legacy military Zener diode product line, engineered specifically for fail-safe voltage regulation in mission-critical systems where parameter stability, hermetic integrity, and MIL-spec compliance are non-negotiable.
FAQ
What is the Zener voltage tolerance for 1N6352US/TR?
The 1N6352US/TR has a standard Zener voltage tolerance of ±5% at 1000 mA test current, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0193-1 datasheet. Tighter tolerances (±1%, ±2%) are available under different part number suffixes (e.g., D or C), but the /TR variant retains the base ±5% specification.
Is 1N6352US/TR qualified to MIL-PRF-19500/533?
Yes, the 1N6352US/TR is fully qualified to MIL-PRF-19500/533 at JANS reliability level, as confirmed in the "Qualified Levels" section on page 1 of the datasheet. It meets all screening, testing, and documentation requirements for spaceflight and nuclear command applications.
What is the maximum surge current rating for 1N6352US/TR?
The 1N6352US/TR is rated for a non-repetitive peak Zener surge current (IZSM) of 114 A under an 8.3 ms square-wave pulse, as listed in the Electrical Characteristics table. This value reflects its capability to absorb transient energy without degradation in high-reliability power systems.
Does 1N6352US/TR have radiation hardness specifications?
Yes, the 1N6352US/TR is inherently radiation-hardened per Microsemi MicroNote 050, with documented tolerance to total ionizing dose (TID) ≥ 100 krad(Si). This characteristic stems from its voidless glass construction and Category I metallurgical bond-not added process hardening.
What package type does 1N6352US/TR use?
The 1N6352US/TR uses the B-SQ MELF (Metal Electrode Leadless Face) glass package-a cylindrical, hermetically sealed voidless glass body with copper end caps and Sn/Pb finish, measuring 0.070–0.085 in diameter and 0.165–0.195 in length per page 6 of the datasheet.
1N6352US/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, B
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 150 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1000 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 114 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.4 V @ 1 A
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- B, SQ-MELF
1N6352US/TR FAQ
1.How can I place an order for 1N6352US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6352US/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 1N6352US/TR reliable?
The price and inventory of 1N6352US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6352US/TR is usually 5 days.
3.What payment methods are accepted for 1N6352US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6352US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6352US/TR?
1N6352US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6352US/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 1N6352US/TR?
For technical support, including 1N6352US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6352US/TR requirements.
6.How does Aetrix verify that 1N6352US/TR is sourced from the original manufacturer or authorized distributors?
All 1N6352US/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 1N6352US/TR meets industry standards.
7.What is the process for return or replacement of 1N6352US/TR?
All 1N6352US/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N6352US/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 1N6352US/TR part is unused and in its original packaging.
Return procedure for 1N6352US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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