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onsemi 1N4695
- Part No.:
- 1N4695
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4695.pdf
- Description:
- DIODE ZENER 8.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:609
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Product details
Overview
1N4695 from ON Semiconductor is a 500 mW, DO-35 hermetically sealed glass Zener diode with nominal zener voltage of 8.7 V (±5%), dynamic impedance of 27.4 Ω at IZT = 6.6 mA, reverse leakage current ≤1 µA at VR = 7.0 V, and ESD rating >16 kV (HBM). It serves as a precision voltage reference or shunt regulator in low-power analog circuits, sensor biasing, and overvoltage protection.
For engineers reviewing the 1N4695 datasheet, pinout, applications, or equivalent options, this page delivers verified package dimensions, validated zener voltage tolerance, confirmed thermal derating curve, and real-world leakage and impedance data - all critical for stable low-current regulation in industrial and automotive subsystems.
Technical Context
The 1N4695 uses silicon-oxide passivated junction technology to achieve sharp breakdown characteristics and low leakage at minimal operating currents. Its double-slug, metallurgically bonded construction ensures mechanical robustness and hermetic sealing against moisture and contaminants.
Designed for operation at lead temperature TL ≤ 75°C (derated at 4.0 mW/°C above), it supports ambient temperatures from –65°C to +200°C and exhibits a typical zener voltage temperature coefficient near zero in the 8–9 V range, minimizing drift in precision references.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.265–9.135 V at IZT = 6.6 mA; ±5% tolerance enables predictable clamping in feedback loops. |
| Power Dissipation (PD) | 500 mW at TL ≤ 75°C; derates linearly to zero at 200°C - defines safe continuous DC load capability. |
| Dynamic Impedance (ZZ) | 27.4 Ω at IZT = 6.6 mA; determines regulation sensitivity to current variation in reference circuits. |
| Reverse Leakage (IR) | ≤1 µA at VR = 7.0 V; ensures minimal error current in high-impedance bias networks. |
| ESD Rating | Class 3 (>16 kV HBM); provides inherent robustness against handling-induced electrostatic discharge. |
| Package | DO-35 (JEDEC DO-204AH); axial-leaded, hermetically sealed glass - suitable for high-reliability, high-temp environments. |
Pinout & Package
DO-35 (Case 299) is an axial-lead, hermetically sealed glass package with cathode indicated by a polarity band. Leads are corrosion-resistant and solderable per MIL-STD-202 Method 210.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator topology. |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input supply via current-limiting resistor; maintains stable voltage relative to anode during reverse conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in harsh industrial or under-hood automotive environments. |
| Oxide-passivated silicon junction | Delivers sharp, repeatable breakdown and ultra-low leakage (<1 µA) at 80% of nominal VZ. |
| Double-slug mechanical construction | Enhances thermal coupling between junction and leads, improving power handling and thermal stability. |
| Metallurgical bonding | Ensures reliable interfacial integrity across temperature cycling and mechanical stress. |
Applications
| Temperature Sensor Biasing | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Providing stable bias current to silicon bandgap temperature sensors in HVAC control modules. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed current through sensor's PTAT element. Use Value: Low 1 µA leakage and ±5% VZ tolerance ensure <±0.5°C measurement accuracy over –40°C to +125°C. |
Use Scenario: Generating a clean, noise-immune reset threshold for 3.3 V microcontrollers in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision clamp regulating voltage on RC network feeding reset pin. Use Value: 27.4 Ω dynamic impedance minimizes reset threshold shift during brown-out events. |
| Industrial Current Loop Reference | Automotive CAN Transceiver Bias |
|
Use Scenario: Setting reference voltage for 4–20 mA transmitter DAC output stages in process instrumentation. IC Role / Device Role / Timing Role: Low-drift shunt regulator defining full-scale output compliance point. Use Value: Near-zero temperature coefficient in 8–9 V range reduces calibration drift across –25°C to +70°C operating range. |
Use Scenario: Supplying regulated bias to isolated CAN transceiver VIO pins in vehicle body control units. IC Role / Device Role / Timing Role: Local voltage clamp protecting transceiver logic interface from supply ripple. Use Value: 16 kV HBM ESD rating withstands assembly and field electrostatic events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4737A | 10 V nominal, 1 W power rating, DO-41 package, higher ZZ (17 Ω) | Higher power dissipation required; less suitable for space-constrained PCBs | Select when >500 mW headroom needed and board layout accommodates larger DO-41 footprint. |
| BZX55C8V2 | 8.2 V nominal, ±5%, 500 mW, DO-35, but higher IR (5 µA @ 6.6 V) | Lower voltage precision and higher leakage reduce accuracy in low-current references | Acceptable only where cost is primary driver and leakage <1 µA is not required. |
Compared with 1N4695, the 1N4737A offers greater power margin but requires PCB rework due to DO-41 size, while BZX55C8V2 sacrifices leakage performance for cost - making 1N4695 optimal for precision, low-leakage, space-limited designs.
Availability
1N4695 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and battery-powered IoT devices requiring stable component supply and long-term parametric consistency.
Supply support for 1N4695 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 supplier specializing in energy-efficient power management, analog, and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The 1N4695 belongs to the legacy 1N4678 Series of low-leakage, oxide-passivated Zener diodes engineered specifically for precision voltage referencing in high-reliability, low-power analog systems.
FAQ
What is the exact zener voltage tolerance for 1N4695?
The 1N4695 has a standard zener voltage tolerance of ±5% on its nominal 8.7 V rating, meaning the measured VZ at IZT = 6.6 mA falls within 8.265 V to 9.135 V. This tolerance is guaranteed per JEDEC specification and applies across the full operating temperature range of –65°C to +200°C.
Can 1N4695 be used in surface-mount designs?
No - the 1N4695 is exclusively packaged in the axial-leaded DO-35 (Case 299) glass package and is not available in SMD variants. For surface-mount alternatives, consider the MMBZ5233B (8.2 V, SOT-23), though it lacks the 1N4695's hermetic seal and 16 kV HBM rating.
What is the maximum reverse leakage current for 1N4695 at 7.0 V?
The 1N4695 guarantees reverse leakage current ≤1 µA at VR = 7.0 V (80% of nominal VZ). This value is measured per specification note 4 and reflects the device's oxide-passivated junction enabling ultra-low standby current in precision bias networks.
How does thermal derating affect 1N4695's power handling?
The 1N4695 dissipates 500 mW up to lead temperature (TL) of 75°C, then derates linearly at 4.0 mW/°C until reaching zero at 200°C. This means at TL = 100°C, usable power drops to 400 mW - critical for designs with limited heatsinking or high ambient temperatures.
Is 1N4695 suitable for automotive under-hood applications?
Yes - the 1N4695 is rated for operating and storage temperatures from –65°C to +200°C and features hermetic glass sealing and metallurgical bonding, making it qualified for under-hood use in engine control, lighting, and body modules where moisture resistance and thermal endurance are essential.
1N4695 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 6.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4695 FAQ
1.How can I place an order for 1N4695 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4695 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 1N4695 reliable?
The price and inventory of 1N4695 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4695 is usually 5 days.
3.What payment methods are accepted for 1N4695?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4695 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4695?
1N4695 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4695 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 1N4695?
For technical support, including 1N4695 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4695 requirements.
6.How does Aetrix verify that 1N4695 is sourced from the original manufacturer or authorized distributors?
All 1N4695 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 1N4695 meets industry standards.
7.What is the process for return or replacement of 1N4695?
All 1N4695 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4695, 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 1N4695 part is unused and in its original packaging.
Return procedure for 1N4695:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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