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Microchip Technology 1N4699-1
- Part No.:
- 1N4699-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4699-1.pdf
- Description:
- DIODE ZENER 12V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,869
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Product details
Overview
1N4699-1 from Microsemi is a 12.0 V, ±5% tolerance, 500 mW axial-leaded Zener diode in DO-35 (DO-204AH) glass package, rated for 50 µA test current, 0.12 V voltage regulation (∆VZ), and 0.05 µA reverse leakage at 10.0 V, used for precision low-power voltage reference and regulation in analog sensor signal conditioning circuits.
For engineers reviewing the 1N4699-1 datasheet, 1N4699-1 pinout, 1N4699-1 application, or 1N4699-1 equivalent, this page delivers verified electrical specs, thermal derating behavior, DO-35 mechanical dimensions, cathode band polarity marking, and RoHS-compliant plating options - all critical for legacy industrial control and aerospace-grade analog power rail stabilization.
Technical Context
The 1N4699-1 operates as a silicon-based Zener regulator with metallurgical bond construction, enabling stable breakdown characteristics across -65 °C to +175 °C junction temperature range and radiation-hardened performance per MicroNote 050. Its 12.0 V nominal Zener voltage is specified at IZT = 50 µA with ∆VZ = 0.12 V between 10 µA and 100 µA.
Thermal resistance is 250 °C/W junction-to-lead (3/8″ lead length) and 310 °C/W junction-to-ambient on FR4 board; maximum steady-state power dissipation is 0.5 W at TL < 50 °C. Reverse leakage is guaranteed ≤0.05 µA at VR = 10.0 V, and forward voltage is 1.1 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 12.0 V at IZT = 50 µA - defines primary regulation point for low-current bias networks |
| Zener Voltage Tolerance | ±5% - standard commercial grade; tighter 2% (C suffix) and 1% (D suffix) available |
| Voltage Regulation (∆VZ) | 0.12 V (10 µA to 100 µA) - quantifies dynamic impedance stability over operating current range |
| Max Reverse Leakage (IR) | 0.05 µA at VR = 10.0 V - ensures minimal error contribution in high-impedance reference paths |
| Max Zener Current (IZM) | 40.8 mA - derived from 0.5 W rating and VZ, sets absolute DC current limit before thermal runaway |
| Junction Temperature Range | -65 °C to +175 °C - supports operation in extended-environment avionics and downhole instrumentation |
| Package | DO-35 (DO-204AH) glass axial-leaded - hermetically sealed, ESD-insensitive per MIL-STD-750 Method 1020 |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package: hermetically sealed cylindrical body with two tinned leads; cathode identified by single black band; polarity requires banded end to be positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to circuit ground or lower potential node when regulating; forms reference return path |
| Cathode | Zener breakdown terminal | Banded end; connected to regulated voltage node; must be held at higher potential than anode for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Enables repeatable Zener knee characteristics and long-term parameter stability under thermal cycling |
| Guaranteed regulation from 10 µA to 100 µA | Validates usable current range for ultra-low-power sensor biasing without external amplification |
| Minimal capacitance (~1.5 pF at 0 V) | Preserves high-frequency signal integrity in RF detector and timing circuit applications |
| Inherent radiation hardness | Supports deployment in space-qualified analog subsystems without additional shielding or screening |
| RoHS-compliant matte-tin plating (commercial grade) | Enables lead-free reflow compatibility while maintaining solderability per MIL-STD-750 Method 2026 |
Applications
| Industrial Sensor Signal Conditioning | Aerospace Power Rail Stabilization |
|---|---|
Use Scenario: Providing stable 12 V reference for 4–20 mA transmitter front-end op-amps in hazardous-area pressure transmitters. IC Role / Device Role / Timing Role: Precision shunt voltage reference establishing fixed bias point for instrumentation amplifier input stage. Use Value: ±5% tolerance and 0.12 V regulation ensure <±0.15 V output drift over 10–100 µA load variation, meeting SIL-2 analog accuracy requirements. |
Use Scenario: Regulating auxiliary 12 V supply for flight-control microcontroller reset circuitry in UAV avionics modules. IC Role / Device Role / Timing Role: Low-power Zener clamp protecting POR (Power-On Reset) threshold against rail sag during cold-start battery conditions. Use Value: -65 °C to +175 °C operation and radiation hardness eliminate need for derating or redundancy in unheated airframe bays. |
| Legacy Test Equipment Calibration | Downhole Oilfield Instrumentation |
Use Scenario: Serving as traceable 12 V reference in handheld multimeter internal ADC reference divider networks. IC Role / Device Role / Timing Role: Primary voltage standard replacing battery-based references in portable metrology tools requiring 1-year calibration stability. Use Value: Hermetic DO-35 glass package prevents humidity-induced parameter shift, supporting ±0.5% annual drift specification. |
Use Scenario: Biasing high-temperature op-amps in borehole logging tools exposed to 150 °C ambient wellbore environments. IC Role / Device Role / Timing Role: Shunt regulator maintaining stable 12 V node for analog front-end amplifiers in real-time seismic data acquisition. Use Value: 175 °C max junction temperature and metallurgical bond structure prevent parametric degradation after 500+ hours at 150 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V, ±5%, 1 W rating, DO-41 package, IZT = 21 mA, ∆VZ = 1.2 V (1 mA–70 mA) | Higher power, higher current operation; unsuitable for µA-range biasing due to larger knee region | Select only when >500 mW dissipation or PCB through-hole footprint compatibility with DO-41 is required |
| BZX55C12 | 12 V, ±5%, 500 mW, DO-35 package, IZT = 5 mA, ∆VZ = 0.4 V (1 mA–20 mA) | Higher test current and looser regulation; lacks radiation hardness and MIL-PRF-19500 up-screening capability | Acceptable for commercial-grade consumer electronics where radiation tolerance and military screening are not mandated |
Compared with 1N4699-1, the 1N4742A offers higher power handling but poorer low-current regulation, while the BZX55C12 matches package and power but sacrifices regulation tightness and radiation resilience - making 1N4699-1 uniquely suited for µA-biased, high-reliability analog systems.
Availability
1N4699-1 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, aerospace power rail stabilization, and downhole oilfield instrumentation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 1N4699-1 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 analog and mixed-signal components.
The 1N4699-1 belongs to Microsemi's legacy JEDEC-registered 1N4678–1N4717 Zener series, engineered for precision voltage regulation in mission-critical analog subsystems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance for the 1N4699-1?
The 1N4699-1 has a nominal Zener voltage of 12.0 V with a standard tolerance of ±5%. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are also available upon request. This tolerance applies at the specified test current of 50 µA and ambient temperature of 25 °C, as defined in the Microsemi T4-LDS-0240 datasheet.
Does the 1N4699-1 support RoHS-compliant assembly processes?
Yes, the 1N4699-1 is available in RoHS-compliant versions with matte-tin plating (designated by the "e3" suffix), exclusively for commercial-grade units. These devices meet J-STD-020 moisture sensitivity level 1 and are qualified for lead-free reflow soldering up to 260 °C for 10 seconds, per MIL-STD-750 Method 2026.
What is the maximum reverse leakage current for the 1N4699-1?
The 1N4699-1 guarantees a maximum reverse leakage current (IR) of 0.05 µA when biased at VR = 10.0 V and measured at 25 °C. This ultra-low leakage ensures minimal loading error in high-impedance reference divider networks and supports accurate biasing in µA-level sensor interfaces.
Can the 1N4699-1 be used in high-temperature environments like downhole tools?
Yes, the 1N4699-1 is rated for junction temperatures from -65 °C to +175 °C and features metallurgical bond construction that maintains parameter stability under thermal stress. It has been deployed in downhole oilfield instrumentation operating continuously at 150 °C ambient, supported by its hermetic DO-35 glass package and radiation-hardened design.
How does the voltage regulation (∆VZ) of the 1N4699-1 compare to other 12 V Zeners?
The 1N4699-1 exhibits ∆VZ = 0.12 V between 10 µA and 100 µA - significantly tighter than standard alternatives like the BZX55C12 (∆VZ = 0.4 V) or 1N4742A (∆VZ = 1.2 V). This reflects superior low-current regulation, essential for precision analog biasing where load current varies minimally across operating conditions.
1N4699-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 50 nA @ 9.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4699-1 FAQ
1.How can I place an order for 1N4699-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4699-1 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 1N4699-1 reliable?
The price and inventory of 1N4699-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4699-1 is usually 5 days.
3.What payment methods are accepted for 1N4699-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4699-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4699-1?
1N4699-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4699-1 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 1N4699-1?
For technical support, including 1N4699-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4699-1 requirements.
6.How does Aetrix verify that 1N4699-1 is sourced from the original manufacturer or authorized distributors?
All 1N4699-1 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 1N4699-1 meets industry standards.
7.What is the process for return or replacement of 1N4699-1?
All 1N4699-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4699-1, 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 1N4699-1 part is unused and in its original packaging.
Return procedure for 1N4699-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4699-1 Tags
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