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Microchip Technology 1N4616-1/TR
- Part No.:
- 1N4616-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4616-1/TR.pdf
- Description:
- DIODE ZENER 2.2V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:8,441
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Product details
Overview
1N4616-1/TR from Microsemi is a 500 mW, 2.2 V Zener diode in DO-35 glass package with 5% voltage tolerance, metallurgical bond construction, and MIL-PRF-19500/435 qualification up to JANS level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the 1N4616-1/TR datasheet, 1N4616-1/TR pinout, 1N4616-1/TR application, or 1N4616-1/TR equivalent, this part delivers stable low-voltage reference regulation with 1.0 µA max reverse leakage at 2.0 V, 1300 Ω dynamic impedance at 250 mA test current, and -0.075 %/°C temperature coefficient - critical for precision analog biasing and overvoltage protection circuits.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 2.2 V reference across load and line variations. Its metallurgically bonded junction ensures low noise density (1 µV/√Hz), minimal capacitance, and radiation hardness per MicroNote 050 - enabling use in low-noise instrumentation and space-grade systems.
Rated for -65 °C to +175 °C operation, it features 300 °C/W junction-to-ambient thermal resistance on FR4 PCBs and linear derating from 500 mW at 25 °C to zero at 175 °C - supporting robust thermal design in sealed or high-temperature enclosures without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.2 V at 250 mA - provides precise low-voltage reference for analog circuit biasing and feedback sensing. |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact axial-leaded designs with defined thermal derating. |
| Zener Impedance ZZT | 1300 Ω at 250 mA - indicates moderate regulation stiffness suitable for non-critical reference applications. |
| Reverse Leakage IR | 2.0 µA max at 2.0 V - ensures low standby current in battery-powered or ultra-low-power monitoring circuits. |
| Temp Coefficient αVZ | -0.075 %/°C - enables predictable voltage drift compensation in wide-temperature-range industrial sensors. |
| Noise Density ND | 1 µV/√Hz - supports low-noise signal conditioning in precision amplifiers and ADC reference stages. |
| Junction Temp Range | -65 °C to +175 °C - meets extended environmental requirements for military avionics and downhole electronics. |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with cathode indicated by band; banded end is positive during Zener regulation. Weight ≈ 0.2 g. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; establishes reference return path for regulated output. |
| Cathode (banded end) | Zener regulation terminal / voltage reference output | Applied positive bias relative to anode to enter breakdown; delivers stable 2.2 V output under specified current range. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Enables radiation hardness and long-term stability in high-reliability aerospace and defense systems per MicroNote 050. |
| MIL-PRF-19500/435 qualification | Validated reliability levels up to JANS support mission-critical applications requiring full screening and lot traceability. |
| Low noise density (1 µV/√Hz) | Minimizes interference in sensitive analog front-ends such as sensor signal chains and precision voltage references. |
| Hermetic glass DO-35 package | Provides moisture and contaminant immunity for operation in harsh environments including high-humidity or vacuum conditions. |
| ESD insensitivity (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection during handling and assembly in automated manufacturing lines. |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters measuring aircraft bus voltage fluctuations. IC Role / Device Role / Timing Role: Zener diode providing stable 2.2 V reference input to ADC driver stage. Use Value: Maintains ±0.5% reference accuracy over -55 °C to +125 °C due to -0.075 %/°C tempco and JANS-level screening. | Use Scenario: Supplying bias voltage to radiation-hardened photodiode amplifiers in Earth observation payloads. IC Role / Device Role / Timing Role: Low-noise 2.2 V Zener reference for op-amp input stage powering optical sensor front-end. Use Value: 1 µV/√Hz noise density prevents signal degradation in sub-microvolt-level photocurrent measurements. |
| Downhole Telemetry Power | Military Radio RF Detector |
Use Scenario: Stabilizing supply rail for pressure/temperature transducers operating at 175 °C in oil well logging tools. IC Role / Device Role / Timing Role: High-temperature Zener regulator maintaining reference integrity under extreme thermal stress. Use Value: Full -65 °C to +175 °C junction rating and hermetic glass seal ensure uninterrupted operation beyond commercial grade limits. | Use Scenario: Providing DC reference for logarithmic RF detector circuits in secure tactical radios. IC Role / Device Role / Timing Role: Low-capacitance Zener diode used in RF envelope detection path to minimize signal distortion. Use Value: Minimal capacitance (typical <2 pF) preserves high-frequency response up to 1 GHz in RF sampling paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4616US-1 | Same electrical specs but in DO-213AA surface-mount package; no axial leads. | Requires SMT reflow process; unsuitable for through-hole prototyping or high-vibration mechanical mounting. | Select when board space is constrained and automated assembly is used; verify thermal pad layout matches RθJL = 250 °C/W requirement. |
| 1N5221B | 2.4 V nominal Zener, 500 mW, DO-35, but only commercial-grade (no MIL-qualified variants or radiation hardening). | Lacks JANTXV/JANS screening, tempco not specified, and no radiation hardness documentation. | Acceptable for cost-sensitive industrial controls where MIL-spec reliability and space-grade performance are not required. |
Compared with 1N4616US-1 and 1N5221B, the 1N4616-1/TR uniquely combines axial-leaded mechanical robustness, full MIL-PRF-19500/435 qualification, and documented radiation hardness - making it irreplaceable in flight-critical and space-qualified systems despite identical nominal voltage and power ratings.
Availability
1N4616-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and downhole telemetry requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for 1N4616-1/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) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and aerospace-grade components.
The 1N4616-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for voltage regulation in defense electronics, satellite subsystems, and high-temperature industrial instrumentation where failure is not an option.
FAQ
What is the Zener voltage tolerance for 1N4616-1/TR?
The 1N4616-1/TR has a nominal Zener voltage of 2.2 V with a standard tolerance of ±5%, as confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current and is consistent across all JAN, JANTX, JANTXV, and JANS reliability levels.
Is 1N4616-1/TR RoHS compliant?
Yes, the 1N4616-1/TR is RoHS compliant (designated by the "e3" suffix in nomenclature), but only in commercial-grade versions. MIL-qualified versions (JAN/JANTX/JANTXV/JANS) are not RoHS compliant per the datasheet note stating RoHS compliance is available "on commercial grade only." The TR suffix indicates tape-and-reel packaging, independent of RoHS status.
What does the "TR" suffix mean in 1N4616-1/TR?
The "TR" suffix in 1N4616-1/TR denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. It does not affect electrical specifications, reliability level, or RoHS status. The base part 1N4616-1 remains unchanged; "TR" only specifies packaging format and requires consultation with the factory for minimum order quantities.
What is the maximum reverse leakage current for 1N4616-1/TR?
The maximum reverse leakage current (IR) for 1N4616-1/TR is 2.0 µA at 2.0 V reverse voltage, as specified in the Electrical Characteristics table. This value is measured at 25 °C and reflects the diode's ability to hold off voltage with minimal standby current - critical for low-power sensor interfaces and battery-backed systems.
Does 1N4616-1/TR require heatsinking in typical applications?
No, 1N4616-1/TR does not require external heatsinking in typical applications due to its 500 mW power rating and 300 °C/W junction-to-ambient thermal resistance on standard FR4 PCBs. However, power must be linearly derated above 25 °C ambient, reaching zero dissipation at 175 °C - so sustained operation near maximum temperature requires careful thermal layout per Figure 2 in the datasheet.
1N4616-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1300 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7
1N4616-1/TR FAQ
1.How can I place an order for 1N4616-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4616-1/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 1N4616-1/TR reliable?
The price and inventory of 1N4616-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4616-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4616-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4616-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4616-1/TR?
1N4616-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4616-1/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 1N4616-1/TR?
For technical support, including 1N4616-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4616-1/TR requirements.
6.How does Aetrix verify that 1N4616-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4616-1/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 1N4616-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4616-1/TR?
All 1N4616-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4616-1/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 1N4616-1/TR part is unused and in its original packaging.
Return procedure for 1N4616-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4616-1/TR Tags
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