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Microchip Technology 1N6316US/TR
- Part No.:
- 1N6316US/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, B
- Datasheet:
-
1N6316US/TR.pdf
- Description:
- DIODE ZENER 4.7V 500MW SQ-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:52
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Product details
Overview
1N6316US/TR from Microsemi is a military-qualified, hermetically sealed 4.7 V ±5% Zener diode in B-SQ MELF package, rated for 0.5 W steady-state power dissipation at 150 °C end-cap temperature, with 17 Ω dynamic impedance at 20 mA test current and 90 mA maximum Zener current - used for precision voltage reference and regulation in aerospace power conditioning circuits.
For engineers reviewing the 1N6316US/TR datasheet, 1N6316US/TR pinout, 1N6316US/TR application, or 1N6316US/TR equivalent, this part supports high-reliability voltage stabilization across -65 °C to +175 °C, requires no external biasing, delivers stable regulation under wide current variation (5–90 mA), and meets MIL-PRF-19500/533 for JAN/JANTXV reliability levels.
Technical Context
This device operates as a two-terminal voltage regulator in reverse-biased breakdown mode, with Zener voltage specified at 4.7 V ±5% at 20 mA (IZ2), 2.8 V minimum at 250 µA (IZ1), and 0.50 V regulation error (∆VZ) between 10% and 50% of IZM. Its voidless glass construction and internal metallurgical bond ensure mechanical robustness and ESD immunity per MIL-STD-750 Method 1020.
Thermal performance is defined by junction-to-end-cap resistance of 35 °C/W (1N6309US–1N6320US group), enabling operation up to 175 °C junction temperature. It exhibits a negative temperature coefficient of -0.028 %/°C, making it suitable for temperature-compensated reference designs where drift must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.7 V ±5% at 20 mA - defines nominal regulation point for stable reference generation |
| Power Dissipation (PD) | 0.5 W @ TEC = 150 °C - sets maximum continuous thermal load on PCB mount |
| Dynamic Impedance (ZZ) | 17 Ω @ 20 mA - determines output voltage stability under load current variation |
| Max Zener Current (IZM) | 90 mA - establishes upper limit for safe DC operating current without degradation |
| Junction Temp Range | -65 °C to +175 °C - enables deployment in extreme environmental conditions including space and avionics |
| Temp Coefficient (αVZ) | -0.028 %/°C - quantifies voltage drift per degree, critical for precision analog references |
| Reverse Leakage (IR1) | 5 µA @ 1.27 V - specifies maximum off-state current at working peak voltage |
Pinout & Package
Hermetically sealed B-SQ MELF (cylindrical glass) package with copper end caps, tin/lead or RoHS-compliant matte tin finish; cathode indicated by band; weight 0.0945 g; dimensions BD = 0.070–0.085 in (1.78–2.16 mm), BL = 0.165–0.195 in (4.19–4.95 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Reverse breakdown terminal / high-side connection | Banded end; connected to unregulated input rail to enable voltage clamping at 4.7 V |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Prevents moisture ingress and long-term parameter drift in harsh environments |
| MIL-PRF-19500/533 qualification | Validated reliability for JAN, JANTX, JANTXV, and JANS levels - required for defense/aerospace BOMs |
| Category I metallurgical bond | Ensures mechanical integrity under shock/vibration; applies to 1N6321US–1N6355US series |
| ESD immunity (MIL-STD-750 Method 1020) | No functional degradation after exposure to electrostatic discharge events |
| Radiation hardness | Inherently resistant to total ionizing dose (TID), per MicroNote 050 - suitable for space applications |
Applications
| Aerospace Power Conditioning | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary supply rails in satellite power management units exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing stable 4.7 V bias for op-amps and ADC drivers. Use Value: Maintains regulation accuracy within ±5% across -65 °C to +175 °C and withstands 100 krad(Si) TID per MicroNote 050. |
Use Scenario: Setting precise thresholds in missile guidance sensor interface circuits requiring field-replaceable reliability. IC Role / Device Role / Timing Role: Zener clamp protecting analog front-end inputs from overvoltage transients during EMI events. Use Value: Delivers 0.5 W dissipation capability with 17 Ω dynamic impedance to suppress fast transients without latch-up. |
| Avionics Sensor Biasing | High-Reliability Industrial Control |
Use Scenario: Supplying calibrated excitation voltage to strain gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Precision voltage reference source with -0.028 %/°C tempco for minimal thermal drift. Use Value: Enables sub-0.1% full-scale measurement accuracy over operational temperature range without active compensation. |
Use Scenario: Stabilizing setpoint references in nuclear plant instrumentation loops where failure is unacceptable. IC Role / Device Role / Timing Role: Fail-safe voltage regulator maintaining critical logic thresholds during brownout conditions. Use Value: Qualified to JANS level with hermetic seal ensures >20-year shelf life and zero parametric shift in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6316US | Same electrical specs, but supplied in bulk (not tape-and-reel); identical MELF package and MIL-PRF-19500/533 qualification | No automated placement support; suited for manual prototyping or low-volume repair | Select 1N6316US/TR when SMT production line compatibility and traceable reel packaging are required |
| SMF4.7A | Surface-mount SOD-123 package; 4.7 V ±5%; 1 W rating; non-military; RoHS-only; 30 Ω Zz @ 25 mA | Lacks MIL qualification, radiation hardness, and ESD immunity per MIL-STD-750 | Choose SMF4.7A only for commercial-grade cost-sensitive applications where reliability requirements are less stringent |
Compared with 1N6316US/TR, the 1N6316US offers identical performance but lacks tape-and-reel packaging for automated assembly, while SMF4.7A trades military reliability and thermal robustness for higher power rating and lower cost in non-critical systems.
Availability
1N6316US/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference, and avionics sensor biasing requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N6316US/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 1N6316US/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for mission-critical voltage regulation where hermetic sealing, radiation tolerance, and extended temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance and test condition for 1N6316US/TR?
The 1N6316US/TR has a nominal Zener voltage of 4.7 V with ±5% tolerance, measured at a test current (IZ2) of 20 mA and ambient temperature of 25 °C. This tolerance is standard for the series unless tighter 1% or 2% variants are selected via part nomenclature (e.g., "D" or "C" suffix). The 1N6316US/TR uses the base "blank" tolerance designation.
Does 1N6316US/TR meet MIL-PRF-19500/533 requirements?
Yes, the 1N6316US/TR is qualified per MIL-PRF-19500/533 for JAN, JANTX, JANTXV, and JANS reliability levels. Its voidless hermetic glass construction, internal metallurgical bond, and screening per military standards make it suitable for use in defense and space applications requiring certified high-reliability components.
What is the maximum allowable junction temperature for 1N6316US/TR?
The 1N6316US/TR has a junction and storage temperature range of -65 °C to +175 °C. Its thermal resistance junction-to-end-cap is 35 °C/W (for the 1N6309US–1N6320US group), allowing safe operation at full 0.5 W power dissipation only when end-cap temperature is maintained at or below 150 °C per derating curves in the datasheet.
Is 1N6316US/TR RoHS compliant?
The 1N6316US/TR is available in both RoHS-compliant (e3 suffix) and non-RoHS versions. RoHS compliance applies only to commercial-grade units; military-grade variants (JAN/JANTXV/JANS) retain Sn/Pb terminations per exemption. Confirm RoHS status via the full part number suffix when ordering.
How does the temperature coefficient affect 1N6316US/TR performance?
The 1N6316US/TR has a Zener voltage temperature coefficient of -0.028 %/°C, meaning its regulated voltage decreases by approximately 1.32 mV/°C near 4.7 V. This negative drift must be accounted for in precision reference designs operating across wide temperature ranges, especially when paired with positive-coefficient devices for compensation.
1N6316US/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):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 17 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1.5 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
1N6316US/TR FAQ
1.How can I place an order for 1N6316US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6316US/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 1N6316US/TR reliable?
The price and inventory of 1N6316US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6316US/TR is usually 5 days.
3.What payment methods are accepted for 1N6316US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6316US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6316US/TR?
1N6316US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6316US/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 1N6316US/TR?
For technical support, including 1N6316US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6316US/TR requirements.
6.How does Aetrix verify that 1N6316US/TR is sourced from the original manufacturer or authorized distributors?
All 1N6316US/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 1N6316US/TR meets industry standards.
7.What is the process for return or replacement of 1N6316US/TR?
All 1N6316US/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N6316US/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 1N6316US/TR part is unused and in its original packaging.
Return procedure for 1N6316US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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