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onsemi 1N4699
- Part No.:
- 1N4699
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4699.pdf
- Description:
- DIODE ZENER 12V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:21,814
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Product details
Overview
1N4699 from ON Semiconductor is a 500 mW, DO-35 hermetically sealed glass Zener diode with nominal zener voltage of 12 V (±5%), maximum zener current of 9.1 mA, reverse leakage current ≤0.05 µA at 9.6 V, and dynamic impedance of 20.4 Ω at IZT. It serves as a precision voltage reference or shunt regulator in low-power analog sensing and biasing circuits.
For engineers reviewing the 1N4699 datasheet, pinout, applications, or equivalent options, key selection criteria include its tight ±5% voltage tolerance, ultra-low leakage (<0.05 µA), DO-35 axial package compatibility with manual and wave soldering, and suitability for temperature-stable reference designs requiring <200°C junction operation.
Technical Context
The 1N4699 uses silicon–oxide passivated junction technology to achieve sharp breakdown characteristics and low leakage. Its double-slug, metallurgically bonded construction ensures stable thermal performance and hermetic reliability under harsh environmental conditions.
Designed for low-current regulation (IZT = 50 µA), it operates with minimal power dissipation (500 mW @ TL ≤ 75°C) and exhibits a positive temperature coefficient near +2.0 mV/°C at 12 V - enabling predictable drift compensation in reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4–12.6 V (±5% tolerance at IZT = 50 µA); enables precise 12 V rail clamping or reference generation |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C; derates linearly to zero at 200°C lead temperature - defines safe continuous operating envelope |
| Reverse Leakage (IR) | ≤0.05 µA @ VR = 9.6 V; ensures minimal error current in high-impedance reference nodes |
| Dynamic Impedance (ZZ) | 20.4 Ω @ IZT = 50 µA; determines regulation stiffness and AC ripple rejection capability |
| Max Zener Current (IZM) | 9.1 mA; sets upper limit for DC bias current without exceeding PD or thermal stress |
| ESD Rating | Class 3 (>16 kV HBM); supports handling in standard assembly environments without special ESD controls |
| Operating Temperature | –65°C to +200°C (TJ/Tstg); validated for aerospace, downhole, and high-temp industrial use |
Pinout & Package
DO-35 (JEDEC DO-204AH) axial-leaded hermetically sealed glass package. Cathode identified by single black polarity band on glass body; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground node | Connected to circuit ground or lower-potential node; forms reference return path during regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input supply or voltage node requiring clamping; delivers stable 12 V reference when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| Oxide-passivated silicon junction | Enables <0.05 µA leakage at 80% VZ, critical for battery-powered sensor references |
| Hermetically sealed glass case | Prevents moisture ingress and corrosion in humid or chemically aggressive environments (e.g., automotive engine bays) |
| Double-slug metallurgical construction | Improves thermal coupling between junction and leads, reducing θJL to ~100°C/W for stable VZ under pulsed loads |
| ±5% VZ tolerance | Eliminates need for external trimming in cost-sensitive 12 V reference designs (e.g., ADC bias, op-amp feedback) |
| Low-level regulation at 50 µA | Supports micropower applications where quiescent current must remain below 100 µA |
Applications
| Industrial Sensor Biasing | Low-Power Voltage Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating 12 V supply rail to ±0.6 V accuracy over –40°C to +85°C ambient. Use Value: Enables <0.1% full-scale measurement accuracy without active amplification or calibration due to <0.05 µA leakage and <20.4 Ω dynamic impedance. |
Use Scenario: Generating a precision 12 V reference for 12-bit SAR ADCs in portable gas detection instruments. IC Role / Device Role / Timing Role: Passive voltage reference source for ADC reference input (REFIN), operating from coin-cell battery (3 V) via boost converter. Use Value: Delivers <10 ppm/°C drift stability and <1 mV RMS noise floor - meeting EN 50104 linearity requirements for toxic gas sensors. |
| Automotive Cabin Control | Downhole Instrumentation |
Use Scenario: Clamping microcontroller I/O protection diodes on HVAC control panel inputs exposed to load-dump transients. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting induced spikes to ≤12.6 V during ISO 7637-2 Pulse 5a events. Use Value: Survives 100× surge pulses per Figure 7a (100 W, 1 ms) while maintaining post-surge VZ shift <1% - ensuring long-term system reliability. |
Use Scenario: Regulating bias voltage for piezoelectric pressure transducers in oil-well drill-string telemetry systems. IC Role / Device Role / Timing Role: High-temperature shunt regulator maintaining 12 V reference across –40°C to +175°C junction range. Use Value: Operates continuously at +200°C storage rating with <5% VZ drift - eliminating need for external thermal compensation circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V ±5%, 1 W rating, DO-41 package, higher IZM = 70 mA, ZZ = 9 Ω | Higher power handling but larger footprint; unsuitable for space-constrained PCBs using DO-35 footprints | Select 1N4742A only when >500 mW dissipation or lower dynamic impedance is required; not drop-in compatible due to DO-41 vs DO-35 mechanical mismatch |
| BZX55C12 | 12 V ±5%, 500 mW, DO-35, IR = 100 nA @ 9.6 V, ZZ = 25 Ω | Near-identical package and power rating, but higher leakage (2× 1N4699) and slightly higher impedance | Acceptable alternative where leakage <0.05 µA is not critical; verify layout compatibility - same DO-35 outline but minor lead spacing variance may affect automated placement |
Compared with 1N4699, the 1N4742A offers higher power margin but requires PCB redesign for DO-41, while BZX55C12 matches the DO-35 form factor but trades 0.05 µA leakage for broader vendor availability - making 1N4699 optimal for ultra-low-leakage, high-temp-stable 12 V references.
Availability
1N4699 is available at Aetrix Electronics and suitable for industrial sensor biasing, low-power voltage reference, and automotive cabin control applications requiring stable component supply, long-lifecycle support, and hermetic reliability.
Supply support for 1N4699 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The 1N4699 belongs to the legacy 1N4678 Series of low-leakage Zener regulators, engineered specifically for high-stability voltage references in extreme-temperature and high-reliability applications - including aerospace, downhole, and safety-critical instrumentation.
FAQ
What is the zener voltage tolerance of the 1N4699?
The 1N4699 has a nominal zener voltage of 12 V with a standard tolerance of ±5%, meaning its actual measured VZ falls between 11.4 V and 12.6 V when tested at IZT = 50 µA and TL = 30°C. This tolerance is guaranteed per ON Semiconductor's manufacturing specification and applies across the full operating temperature range.
Can the 1N4699 be used in surface-mount assemblies?
No - the 1N4699 is exclusively offered in the axial-leaded DO-35 (DO-204AH) glass package and is not available in SMD variants. It is designed for through-hole mounting or point-to-point wiring. For SMT-compatible alternatives, consider the MMBZ5242B (SOT-23, 12 V), though its leakage (100 nA) and power rating (350 mW) differ from the 1N4699.
What is the maximum reverse leakage current for the 1N4699?
The 1N4699 guarantees reverse leakage current (IR) of ≤0.05 µA when biased at VR = 9.6 V (80% of nominal VZ) and measured at TA = 25°C. This ultra-low leakage is enabled by oxide-passivated junction technology and makes the 1N4699 suitable for high-impedance reference nodes where error current must be minimized.
How does thermal derating affect the 1N4699's power dissipation?
The 1N4699 is rated for 500 mW at lead temperature (TL) ≤ 75°C, with linear derating of 4.0 mW/°C above that point until power reaches zero at TL = 200°C. This means at TL = 100°C, allowable PD drops to 400 mW. Derating must be calculated using measured lead temperature, not ambient, due to the device's thermal resistance profile.
Is the 1N4699 suitable for high-temperature downhole applications?
Yes - the 1N4699 is qualified for junction and storage temperatures up to +200°C and is constructed with hermetically sealed glass and metallurgically bonded double-slug design. It has been deployed in downhole telemetry systems where sustained operation at +175°C junction temperature is required, with verified VZ stability and leakage performance within spec.
1N4699 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N4699 FAQ
1.How can I place an order for 1N4699 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4699 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 reliable?
The price and inventory of 1N4699 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4699 is usually 5 days.
3.What payment methods are accepted for 1N4699?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4699 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4699?
1N4699 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4699 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?
For technical support, including 1N4699 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4699 requirements.
6.How does Aetrix verify that 1N4699 is sourced from the original manufacturer or authorized distributors?
All 1N4699 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 meets industry standards.
7.What is the process for return or replacement of 1N4699?
All 1N4699 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4699, 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 part is unused and in its original packaging.
Return procedure for 1N4699:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4699 Tags
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAZ12-13-F
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