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Microchip Technology 1N4616-1
- Part No.:
- 1N4616-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4616-1.pdf
- Description:
- DIODE ZENER 2.2V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:3,561
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Product details
Overview
1N4616-1 from Microsemi is a 500 mW, 2.2 V Zener diode in DO-35 glass package, qualified to JANS level per MIL-PRF-19500/435, with 1% voltage tolerance, 1300 Ω dynamic impedance at 250 mA test current, and -0.075 %/°C temperature coefficient - used for precision low-voltage regulation in military power supplies and analog reference circuits.
For engineers reviewing the 1N4616-1 datasheet, 1N4616-1 pinout, 1N4616-1 application, or 1N4616-1 equivalent, this page delivers verified electrical specs, thermal derating behavior, noise density (1 µV/√Hz), RoHS-compliant commercial variants, and mil-spec qualification levels - all critical for high-reliability analog design and radiation-hardened systems.
Technical Context
This device operates as a reverse-biased voltage reference with metallurgically bonded construction ensuring stable breakdown characteristics across -65 °C to +175 °C. Its 2.2 V nominal Zener voltage is specified at 250 mA test current (IZT), with maximum reverse leakage of 2.0 µA at VR = 1.0 V and dynamic impedance of 1300 Ω measured at 10% AC modulation of IZT.
The 1N4616-1 exhibits a negative temperature coefficient (-0.075 %/°C), enabling predictable drift compensation in multi-diode references. Its 500 mW power rating linearly derates from 25 °C ambient to zero at 175 °C on standard FR4 PCBs, and junction-to-lead thermal resistance is 250 °C/W with 10 mm lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.2 V at 250 mA - defines precise regulation point for low-voltage biasing and reference generation. |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact through-hole designs with defined thermal derating curve. |
| Zener Impedance (ZZT) | 1300 Ω at 250 mA - indicates moderate AC impedance affecting regulation stability under varying load currents. |
| Temp Coefficient (αVZ) | -0.075 %/°C - enables predictable voltage drift correction in temperature-compensated reference networks. |
| Noise Density (ND) | 1 µV/√Hz at 250 mA - ultra-low broadband noise suitable for precision analog signal chains and sensor excitation. |
| Reverse Leakage (IR) | 2.0 µA at VR = 1.0 V - ensures minimal parasitic current in high-impedance reference nodes. |
| Max Zener Current (IZM) | 100 mA - sets absolute DC current limit before exceeding rated power at elevated temperatures. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package: hermetically sealed, cathode indicated by band, tin-lead or RoHS-compliant matte-tin plating, weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires cathode at higher potential. |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated voltage node; must be held positive relative to anode for Zener conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures long-term parameter stability and reduced parameter shift under thermal cycling and high-reliability stress. |
| JANS-level qualification | Validated for space-grade and nuclear-hardened applications per MIL-PRF-19500/435 with full lot traceability. |
| 1% Zener voltage tolerance | Enables tighter system-level voltage accuracy without external trimming in critical analog subsystems. |
| Ultra-low noise density | 1 µV/√Hz at 2.2 V allows use in low-noise instrumentation amplifiers and precision ADC reference buffers. |
| Hermetic glass sealing | Prevents moisture ingress and parameter degradation in harsh environments including high-humidity and vacuum conditions. |
Applications
| Military Power Supply Regulation | Precision Analog Reference Generation |
|---|---|
Use Scenario: Regulating auxiliary rails in airborne radar power modules operating across -55 °C to +125 °C. IC Role / Device Role / Timing Role: Zener diode providing stable 2.2 V reference for op-amp biasing and comparator thresholds. Use Value: JANS qualification and -0.075 %/°C TC ensure predictable regulation drift over extreme temperature excursions without recalibration. | Use Scenario: Generating low-drift reference for 16-bit SAR ADC front-end in satellite telemetry systems. IC Role / Device Role / Timing Role: Primary voltage reference element in a temperature-compensated reference string. Use Value: 1 µV/√Hz noise density prevents added quantization error; hermetic DO-35 package maintains long-term stability in vacuum. |
| Radiation-Hardened Sensor Interface | Low-Voltage Bias Network Stabilization |
Use Scenario: Biasing photodiode preamplifiers in nuclear reactor monitoring sensors exposed to total ionizing dose >100 krad(Si). IC Role / Device Role / Timing Role: Low-voltage Zener clamp protecting amplifier inputs while maintaining reference integrity. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in high-dose environments. | Use Scenario: Stabilizing base-emitter voltage in discrete transistor amplifiers for RF receiver IF stages. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed 2.2 V bias point for BJT bias networks. Use Value: 1300 Ω dynamic impedance provides sufficient regulation stiffness against supply ripple while minimizing quiescent current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4616UR-1 | Same electrical specs, DO-213AA surface-mount package instead of DO-35 axial lead. | Required for automated SMT assembly; lacks axial mounting flexibility and manual prototyping compatibility. | Select when board space constraints or production automation mandate surface-mount packaging. |
| 1N5221B | 2.4 V nominal Zener, 5% tolerance, 500 mW, DO-35 - no mil-spec qualification or 1% tolerance option. | Suitable only for commercial-grade applications; not rated for radiation exposure or extended temperature operation. | Choose only for cost-sensitive non-mil designs where ±5% regulation accuracy suffices. |
Compared with 1N4616UR-1, the 1N4616-1 offers mechanical mounting versatility and legacy compatibility; compared with 1N5221B, it delivers tighter tolerance, lower noise, and full military qualification - making it irreplaceable in aerospace, defense, and radiation-intensive analog systems.
Availability
1N4616-1 is available at Aetrix Electronics and suitable for military power supply regulation, precision analog reference generation, radiation-hardened sensor interface requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for 1N4616-1 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 belongs to Microsemi's legacy MIL-PRF-19500/435-qualified Zener diode family, designed specifically for precision voltage regulation in mission-critical analog circuits where parameter stability, low noise, and environmental survivability are mandatory.
FAQ
What is the Zener voltage tolerance for the 1N4616-1?
The 1N4616-1 has a nominal Zener voltage of 2.2 V with a 1% tolerance, meaning its actual breakdown voltage falls within 2.178 V to 2.222 V at 250 mA test current and 25 °C ambient. This tight tolerance is achieved via post-process screening and is documented in the Electrical Characteristics table of T4-LDS-0245-2 Rev. 1.
Is the 1N4616-1 suitable for surface-mount assembly?
No - the 1N4616-1 uses the axial-leaded DO-35 (DO-204AH) glass package and is not compatible with reflow soldering or pick-and-place equipment. For surface-mount equivalents, Microsemi offers the 1N4616UR-1 in DO-213AA package, which shares identical electrical specifications but differs mechanically.
What is the maximum allowable reverse current for the 1N4616-1 at 1.0 V?
The 1N4616-1 has a maximum reverse leakage current (IR) of 2.0 µA when biased at VR = 1.0 V and measured at 25 °C. This value is specified in the Electrical Characteristics table and reflects the diode's low-leakage performance critical for high-impedance reference nodes.
Does the 1N4616-1 meet RoHS requirements?
Yes - RoHS-compliant versions of the 1N4616-1 are available with "e3" suffix (e.g., 1N4616-1e3), featuring annealed matte-tin plating. These are qualified for commercial-grade use only; mil-spec variants (JAN/JANTX/JANTXV/JANS) retain traditional tin-lead plating per MIL-STD-750.
How does the temperature coefficient affect the 1N4616-1 in practical circuits?
The 1N4616-1 has a temperature coefficient of -0.075 %/°C, meaning its Zener voltage decreases by approximately 1.65 mV per °C rise from 25 °C. This predictable negative drift enables compensation in multi-diode reference strings and must be factored into thermal design margins for systems operating beyond 25 °C.
1N4616-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for 1N4616-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4616-1 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 reliable?
The price and inventory of 1N4616-1 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 is usually 5 days.
3.What payment methods are accepted for 1N4616-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4616-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4616-1?
1N4616-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4616-1 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?
For technical support, including 1N4616-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4616-1 requirements.
6.How does Aetrix verify that 1N4616-1 is sourced from the original manufacturer or authorized distributors?
All 1N4616-1 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 meets industry standards.
7.What is the process for return or replacement of 1N4616-1?
All 1N4616-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4616-1, 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 part is unused and in its original packaging.
Return procedure for 1N4616-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4616-1 Tags
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