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Microchip Technology 1N4695
- Part No.:
- 1N4695
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4695.pdf
- Description:
- DIODE ZENER 8.7V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,409
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Product details
Overview
1N4695 from Microsemi is a 500 mW, 8.7 V ±5% axial-leaded Zener diode in DO-7 (DO-204AA) glass package, rated for operation from –65°C to +175°C, with 50 µA test current, 0.10 V max voltage regulation (10–100 µA), and 6.6 V max DC zener current. It serves as a precision voltage reference in low-power analog monitoring circuits.
For engineers reviewing the 1N4695 datasheet, 1N4695 pinout, 1N4695 application, or 1N4695 equivalent, key selection criteria include its 8.7 V nominal zener voltage, tight 0.10 V regulation delta over 10–100 µA, hermetic DO-7 glass construction, MIL-PRF-19500 screening options, and radiation-hardened performance per MicroNote 050.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable voltage across a wide current range (10–100 µA), with guaranteed regulation performance independent of ambient temperature shifts. Its metallurgically bonded junction ensures reliability under thermal cycling and high-temperature storage.
The device exhibits a low temperature coefficient typical for mid-voltage Zeners (~0.05%/°C), and its capacitance is specified per Figure 3 in the datasheet-enabling predictable behavior in noise-sensitive biasing and reference applications where parasitic coupling must be modeled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 8.7 V ±5% - defines stable regulation point for low-current reference circuits |
| Zener Test Current | 50 µA - standardized bias point for measuring VZ and regulation delta |
| Max Voltage Regulation ΔVZ | 0.10 V (10–100 µA) - quantifies voltage stability across operating current range |
| Max Reverse Leakage @ VR | 1.0 µA @ 1.0 V - ensures minimal error current in high-impedance bias networks |
| Max DC Zener Current IZM | 6.6 mA - maximum continuous current before exceeding 500 mW power limit at TL < 25°C |
| Operating Temperature Range | –65°C to +175°C - supports deployment in aerospace, downhole, and military environments |
| Package | DO-7 (DO-204AA) glass axial-leaded - hermetically sealed, MIL-qualified mechanical form factor |
Pinout & Package
DO-7 (DO-204AA) glass axial-leaded package with cathode indicated by color band; leads are tin-lead plated and solderable per MIL-STD-750 Method 2026. Polarity: banded end is cathode (positive terminal during Zener operation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to circuit ground or lower-potential node when regulating |
| Cathode | Banded lead | Connected to regulated voltage node; reverse-biased during operation |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N4695 designation and electrical validation protocol |
| Internally metallurgically bonded junction | Enables robust thermal cycling performance and long-term parameter stability |
| MIL-PRF-19500 screening options | JAN/JANTX/JANTXV/JANS versions available via MQ/MX/MV/MSP prefixes for high-reliability programs |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050-no additional hardening required |
| ESD immunity | Non-sensitive per MIL-STD-750 Method 1020-safe for handling without special ESD controls |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 8.7 V reference for linear regulator feedback or ADC reference divider networks in space-constrained industrial controllers. IC Role / Device Role / Timing Role: Voltage reference element establishing precise bias point for analog signal conditioning stages. Use Value: Delivers 0.10 V regulation delta over 10–100 µA, minimizing drift-induced measurement error in 12-bit+ data acquisition systems. | Use Scenario: Clamping transient surges on low-voltage sensor inputs (e.g., 10 V rail) in avionics environmental monitoring modules. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground before downstream ICs exceed absolute maximum ratings. Use Value: Withstands –65°C to +175°C operation and maintains leakage <1 µA at 1 V, ensuring fail-safe clamping integrity across extreme thermal profiles. |
| Temperature-Stable Biasing | Military Voltage Monitoring |
Use Scenario: Generating temperature-compensated bias currents for op-amp input stages in high-precision instrumentation amplifiers. IC Role / Device Role / Timing Role: Low-noise Zener source enabling stable quiescent current setting despite ambient fluctuations. Use Value: Exhibits low tempco (~0.05%/°C) and 0.10 V regulation window-reducing gain drift to <0.1% over –55°C to +125°C. | Use Scenario: Monitoring 9 V battery health in JANTXV-grade handheld radios deployed in desert or arctic field conditions. IC Role / Device Role / Timing Role: Precision threshold detector verifying battery voltage remains above operational minimum before system reset. Use Value: Hermetic DO-7 package and MIL-PRF-19500 screening ensure consistent 8.7 V turn-on across 20-year shelf life and repeated thermal shock cycles. |
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 | 8.2 V nominal, 1 W rating, DO-41 package, ±5% tolerance | Higher power dissipation but larger footprint; less suitable for high-temp hermetic assemblies | Select when higher current capability (>6.6 mA) is required and board space allows DO-41 mounting |
| BZX55-C8V2 | 8.2 V nominal, 500 mW, DO-35 package, ±5% tolerance, non-hermetic | Lower cost and commercial-grade; lacks MIL screening, radiation hardness, and extended temperature range | Select for cost-sensitive commercial designs where –65°C to +175°C operation and radiation tolerance are not required |
Compared with 1N4695, the 1N4737A offers higher power handling but sacrifices hermeticity and temperature range, while BZX55-C8V2 provides similar power and tolerance at lower cost but omits military qualification, radiation hardness, and extreme-temperature capability-making 1N4695 uniquely suited for high-reliability embedded systems.
Availability
1N4695 is available at Aetrix Electronics and suitable for aerospace power sequencing, downhole sensor biasing, and military battery monitoring requiring stable component supply across extended temperature and radiation-exposed environments.
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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and high-temperature analog and mixed-signal components.
The 1N4695 belongs to Microsemi's legacy 1N4678–1N4717 DO-7 Zener family, engineered for precision voltage regulation in mission-critical aerospace, defense, and industrial systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the nominal Zener voltage and tolerance of the 1N4695?
The 1N4695 has a nominal Zener voltage of 8.7 V with a standard tolerance of ±5%. Tighter tolerances of ±2% (suffix C) and ±1% (suffix D) are available upon request. This voltage is measured at 50 µA test current and is guaranteed over the full –65°C to +175°C operating temperature range.
What package type and construction does the 1N4695 use?
The 1N4695 uses a hermetically sealed DO-7 (DO-204AA) glass axial-leaded package with internally metallurgically bonded junction. Leads are tin-lead plated and solderable per MIL-STD-750 Method 2026. The cathode is marked by a color band on the glass body.
Does the 1N4695 support military-grade screening?
Yes, the 1N4695 supports MIL-PRF-19500 screening levels including JAN, JANTX, JANTXV, and JANS. These variants are obtained by adding MQ, MX, MV, or MSP prefixes respectively to the base part number, enabling use in high-reliability aerospace and defense applications.
What is the maximum voltage regulation specification for the 1N4695?
The 1N4695 guarantees a maximum voltage regulation (ΔVZ) of 0.10 V between 10 µA and 100 µA test currents at 25°C. This tight regulation window ensures minimal output variation in low-current reference and biasing applications.
Is the 1N4695 radiation-hardened?
Yes, the 1N4695 is inherently radiation-hardened as described in Microsemi MicroNote 050. Its DO-7 glass package and metallurgical construction provide natural resistance to total ionizing dose (TID) and single-event effects without requiring external hardening measures.
1N4695 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):
- 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.
1N4695 Tags
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MMBZ5240B-7-F
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MM5Z5V1ST1G
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