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Microchip Technology 1N4697-1
- Part No.:
- 1N4697-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4697-1.pdf
- Description:
- DIODE ZENER 10V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,678
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Product details
Overview
1N4697-1 from Microsemi is a 500 mW axial-leaded Zener diode in DO-35 (DO-204AH) glass package, rated for 10.0 V nominal Zener voltage at 50 µA test current, with ±5% tolerance, 0.10 V maximum voltage regulation (100 µA – 10 µA), and 7.6 V maximum reverse leakage voltage at 1.0 µA. It serves as a precision voltage reference in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the 1N4697-1 datasheet, 1N4697-1 pinout, 1N4697-1 application, or 1N4697-1 equivalent, key selection criteria include its 10.0 V Zener voltage, 0.10 V regulation spread, 49.6 mA maximum Zener current, -65°C to +175°C junction temperature range, and DO-35 mechanical compatibility with through-hole PCB layouts.
Technical Context
The 1N4697-1 operates in reverse breakdown mode with metallurgically bonded construction for stable voltage regulation across temperature and current variations. Its Zener voltage is specified at IZT = 50 µA, and regulation performance is guaranteed between 10 µA and 100 µA - critical for low-current biasing and sensing applications.
Thermal resistance is defined at 250°C/W junction-to-lead (3/8″ lead length) and 310°C/W junction-to-ambient (FR4 board), supporting reliable operation up to 175°C junction temperature. The device exhibits minimal capacitance (<2 pF at 0 V, <1.5 pF at -2 V) and is non-sensitive to ESD per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.0 V at 50 µA - defines stable regulation point for reference and clamping circuits |
| Regulation Spread (∆VZ) | 0.10 V (100 µA – 10 µA) - quantifies voltage stability under varying load current |
| Max Reverse Leakage (IR) | 1.0 µA at 7.6 V - ensures minimal parasitic current in high-impedance bias networks |
| Max Zener Current (IZM) | 49.6 mA - sets absolute upper limit for continuous power dissipation at 0.5 W |
| Power Dissipation (PD) | 0.5 W at TL < 50°C - defines thermal derating envelope for lead-mounted operation |
| Junction Temp Range | -65°C to +175°C - enables use in extended industrial, aerospace, and downhole environments |
| Package | DO-35 (DO-204AH) glass axial - supports manual soldering, wave soldering, and legacy through-hole assembly |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded end | Connected to regulated voltage node; polarity must be observed for proper breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Ensures long-term Zener voltage stability and reduced parameter drift under thermal cycling |
| Guaranteed regulation 10–100 µA | Enables reliable operation in ultra-low-current bias and sensing circuits without external amplification |
| Minimal capacitance (<2 pF) | Preserves signal integrity in RF coupling, timing, and high-frequency clamp applications |
| Radiation-hardened design | Inherently tolerant to total ionizing dose (TID), per Microsemi MicroNote 050, for space-grade use |
| Non-ESD-sensitive | Eliminates need for handling precautions beyond standard JEDEC practices (MIL-STD-750 Method 1020) |
Applications
| Low-Power Voltage Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Providing stable 10 V reference for op-amp comparators and ADC bias networks in battery-powered instrumentation. IC Role / Device Role / Timing Role: Passive voltage reference element establishing precise threshold voltage independent of supply variation. Use Value: Delivers 10.0 V ±0.5 V with 0.10 V regulation spread across 10–100 µA, minimizing calibration drift. |
Use Scenario: Clamping transient surges on 12 V rail inputs in automotive control modules to protect downstream logic ICs. IC Role / Device Role / Timing Role: Shunt protection device conducting excess energy above 10 V to ground during ESD or load-dump events. Use Value: Limits peak voltage to ≤10.1 V at 100 µA while sustaining 1.0 µA leakage at 7.6 V - preserving standby current budget. |
| Feedback Regulation Node | Temperature-Stable Bias Generator |
Use Scenario: Setting output voltage in isolated flyback converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision Zener element defining regulation setpoint in secondary-side feedback path. Use Value: Maintains 10.0 V reference with <±0.1% tempco contribution over -40°C to +85°C ambient. |
Use Scenario: Generating temperature-compensated bias current for analog front-end transconductance amplifiers. IC Role / Device Role / Timing Role: Stable voltage source enabling predictable current mirror ratios across operating temperature. Use Value: Delivers 10.0 V with 0.10 V regulation window and -65°C to +175°C junction capability - supporting wide-temperature designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | 10 V nominal, 1.0 W rating, DO-41 package, ±5% tolerance, 170 mA IZM | Higher power handling but larger footprint; less suitable for space-constrained low-power designs | Select when >0.5 W dissipation or higher surge current capability is required |
| BZX55C10 | 10 V nominal, 500 mW, DO-35 package, ±5% tolerance, 100 mA IZM, 0.2 V ∆VZ | Higher regulation spread (0.2 V vs. 0.10 V); no radiation-hardened qualification | Acceptable for commercial-grade cost-sensitive applications where tighter regulation is not critical |
Compared with 1N4697-1, the 1N4740A offers double the power rating but requires PCB layout changes due to DO-41 size, while BZX55C10 matches the DO-35 form factor but sacrifices regulation precision and radiation tolerance - making 1N4697-1 optimal for high-reliability, low-current, space-constrained systems.
Availability
1N4697-1 is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage clamp protection, and feedback regulation applications requiring stable component supply, long-lifecycle support, and traceable sourcing for aerospace, industrial control, and medical electronics.
Supply support for 1N4697-1 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-tolerant, and military-grade analog and discrete components.
The 1N4697-1 belongs to Microsemi's legacy 1N4678–1N4717-1 family of 500 mW axial Zeners, engineered for precision voltage regulation in mission-critical analog subsystems where stability, longevity, and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4697-1?
The 1N4697-1 has a nominal Zener voltage of 10.0 V with a standard tolerance of ±5%, meaning the actual measured VZ falls between 9.5 V and 10.5 V at 50 µA. Tighter tolerances (±2% and ±1%) are available under different part number suffixes (e.g., "C" or "D"), but the base 1N4697-1 variant is ±5%. This tolerance is verified per JEDEC registration and MIL-PRF-19500 screening standards.
Can 1N4697-1 be used in surface-mount designs?
No - the 1N4697-1 is packaged exclusively in the axial-leaded DO-35 (DO-204AH) glass case and is not a surface-mount device. Microsemi does offer surface-mount equivalents in the same voltage family (e.g., 1N4697UR-1 in DO-213AA), but the 1N4697-1 itself requires through-hole mounting with 3/8″ minimum lead length for thermal compliance. Substituting it into SMT layouts would require mechanical adaptation and invalidate thermal ratings.
What is the maximum reverse leakage current for 1N4697-1?
The maximum reverse leakage current (IR) for 1N4697-1 is 1.0 µA, measured at a reverse voltage (VR) of 7.6 V and ambient temperature of 25°C. This low leakage supports high-impedance bias networks and minimizes quiescent power loss in battery-operated systems - a key advantage over higher-leakage Zeners like the BZX55 series.
Is 1N4697-1 compliant with RoHS requirements?
Yes - RoHS-compliant versions of 1N4697-1 are available with matte-tin plating (designated by the "-1 (e3)" suffix), but only for commercial-grade units. Military-grade variants (e.g., JAN, JANTX) retain tin-lead plating and are exempt from RoHS. Always verify the full part number suffix and ordering code to confirm RoHS status before procurement.
How does the voltage regulation performance of 1N4697-1 compare across current range?
The 1N4697-1 guarantees a maximum voltage regulation spread (∆VZ) of 0.10 V between 10 µA and 100 µA test points - significantly tighter than many general-purpose Zeners. This narrow spread ensures consistent reference accuracy in low-current analog stages, such as sensor biasing or comparator hysteresis networks, where current may vary dynamically within that range.
1N4697-1 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):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 7.6 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-204AH (DO-35)
1N4697-1 FAQ
1.How can I place an order for 1N4697-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4697-1 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 1N4697-1 reliable?
The price and inventory of 1N4697-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4697-1 is usually 5 days.
3.What payment methods are accepted for 1N4697-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4697-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4697-1?
1N4697-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4697-1 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 1N4697-1?
For technical support, including 1N4697-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4697-1 requirements.
6.How does Aetrix verify that 1N4697-1 is sourced from the original manufacturer or authorized distributors?
All 1N4697-1 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 1N4697-1 meets industry standards.
7.What is the process for return or replacement of 1N4697-1?
All 1N4697-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4697-1, 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 1N4697-1 part is unused and in its original packaging.
Return procedure for 1N4697-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4697-1 Tags
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