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onsemi 1N5246B_S00Z
- Part No.:
- 1N5246B_S00Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5246B_S00Z.pdf
- Description:
- DIODE ZENER 16V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:5,142
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Product details
Overview
1N5246B_S00Z from ON Semiconductor is a 16 V ±5% Zener diode in DO-35 glass package, rated for 500 mW power dissipation at 25°C, with 17 Ω dynamic impedance at 16 mA test current and 0.1 μA reverse leakage at 12.8 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.
For engineers reviewing the 1N5246B_S00Z datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal derating behavior, cathode identification, and direct alternatives for voltage reference design validation and BOM optimization.
Technical Context
This device operates in reverse breakdown mode with a nominal Zener voltage of 16 V at IZ = 16 mA, exhibiting a temperature coefficient of +0.083 %/°C - indicating positive drift with rising junction temperature. Its 17 Ω Zener impedance ensures stable regulation under moderate load variation.
The DO-35 hermetically sealed glass package supports operation across –65°C to +200°C junction temperature range, with 4.0 mW/°C thermal derating above 50°C ambient and 230°C lead-soldering tolerance at 1/16 inch from case for 10 seconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V min / 16.8 V max at IZ = 16 mA - defines tight 5% tolerance band for reference stability |
| Power Dissipation (PD) | 500 mW at TA = 25°C - sets maximum continuous DC power handling before thermal shutdown risk |
| Zener Impedance (ZZ) | 17 Ω at IZ = 16 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | 0.1 μA at VR = 12.8 V - ensures minimal quiescent current in standby clamp configurations |
| Temperature Coefficient | +0.083 %/°C - quantifies voltage drift per degree rise, critical for temperature-compensated references |
| Forward Voltage (VF) | 1.2 V max at IF = 200 mA - defines conduction threshold when used in forward-biased protection paths |
Pinout & Package
DO-35 glass axial package with cathode identified by color band; two-terminal device requiring no PCB footprint adaptation beyond standard 0.375" (9.5 mm) lead spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener breakdown return path | Connected to lower-potential node in shunt regulator or clamp configuration |
| Cathode | Zener breakdown terminal / reference output node | Marked with color band; supplies regulated voltage referenced to anode potential |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables use without external trimming in cost-sensitive 16 V reference designs |
| Hermetic DO-35 glass construction | Guarantees long-term parameter stability and moisture resistance in industrial environments |
| Low 0.1 μA leakage at 80% VZ | Minimizes error contribution in high-impedance bias networks and sensor interfaces |
| +0.083 %/°C tempco | Supports predictable voltage drift modeling for ambient-compensated circuits |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Power Rail Clamp |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 16 V bias to Wheatstone bridge. Use Value: Maintains <±0.5% full-scale accuracy over –40°C to +85°C ambient due to known tempco and low leakage. |
Use Scenario: Protecting 3.3 V or 5 V MCU I/O pins against ESD-induced overvoltage transients. IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor clamping to safe logic levels. Use Value: Limits voltage to ≤16.8 V during fast transients while drawing <0.1 μA in normal operation. |
| Programmable Logic Supply Monitor | Legacy Analog Meter Calibration Reference |
Use Scenario: Generating threshold voltage for comparator-based brown-out detection on 15 V FPGA auxiliary rails. IC Role / Device Role / Timing Role: Precision voltage threshold generator with defined hysteresis margin. Use Value: Enables reliable reset assertion at 15.2–15.8 V window using resistor divider feedback. |
Use Scenario: Calibrating analog panel meters requiring traceable 16 V reference in field service tools. IC Role / Device Role / Timing Role: Portable, battery-operated calibration source with stable open-circuit output. Use Value: Delivers 16.0 V ±0.1 V at 1 mA load with <10 ppm/°C effective drift after thermal stabilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4744A | 14 V nominal, 1 Ω lower ZZ, 1 W rating, DO-41 package | Higher power handling but larger footprint; requires layout change | Select when >500 mW dissipation or lower impedance is required |
| BZX55C16 | Same 16 V rating, 5% tolerance, but 500 mW DO-35 package with tighter 10 Ω ZZ | Identical form factor; superior impedance but different manufacturer qualification | Choose for improved regulation accuracy where ON Semi sourcing is not mandatory |
Compared with 1N5246B_S00Z, 1N4744A offers higher power and lower impedance but demands PCB rework, while BZX55C16 matches the DO-35 footprint and voltage but delivers tighter Zener impedance - making it suitable for higher-precision analog references where supply chain flexibility is prioritized.
Availability
1N5246B_S00Z is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller I/O protection, and programmable logic supply monitoring requiring stable component supply and long-lifecycle support.
Supply support for 1N5246B_S00Z 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 delivering energy-efficient silicon solutions for automotive, industrial, cloud computing, medical, and IoT applications.
The 1N52xxB series belongs to ON Semiconductor's legacy Zener diode product line, designed specifically for general-purpose voltage regulation and clamping in cost-sensitive, low-power analog circuits.
FAQ
What is the exact Zener voltage range for 1N5246B_S00Z at 25°C?
The 1N5246B_S00Z has a guaranteed Zener voltage range of 15.2 V (minimum) to 16.8 V (maximum) at test current IZ = 16 mA and ambient temperature 25°C, reflecting its ±5% tolerance specification per ON Semiconductor's 1N5221B–1N5263B datasheet Rev. 3.
Does 1N5246B_S00Z have a specified forward voltage?
Yes, the 1N5246B_S00Z specifies a maximum forward voltage of 1.2 V at forward current IF = 200 mA, consistent with standard silicon diode conduction characteristics and relevant when used in bidirectional protection schemes.
Can 1N5246B_S00Z be used in surface-mount designs?
No - the 1N5246B_S00Z is packaged exclusively in the through-hole DO-35 glass axial case and lacks SMD variants. For surface-mount equivalents, consider ON Semiconductor's NSZ5246B (SOD-123) or Diodes Inc.'s BZT52-B16.
What is the thermal derating behavior of 1N5246B_S00Z above 50°C?
The 1N5246B_S00Z derates linearly at 4.0 mW/°C above 50°C ambient temperature, reducing its maximum allowable power dissipation from 500 mW at 25°C to 400 mW at 75°C and 300 mW at 100°C ambient.
How is cathode polarity identified on the 1N5246B_S00Z package?
The cathode of the 1N5246B_S00Z is marked by a distinct color band on the DO-35 glass body - a standardized visual indicator used across all 1N52xxB series devices to ensure correct orientation during manual or automated assembly.
1N5246B_S00Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 17 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 12 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N5246B_S00Z FAQ
1.How can I place an order for 1N5246B_S00Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5246B_S00Z 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 1N5246B_S00Z reliable?
The price and inventory of 1N5246B_S00Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5246B_S00Z is usually 5 days.
3.What payment methods are accepted for 1N5246B_S00Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5246B_S00Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5246B_S00Z?
1N5246B_S00Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5246B_S00Z 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 1N5246B_S00Z?
For technical support, including 1N5246B_S00Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5246B_S00Z requirements.
6.How does Aetrix verify that 1N5246B_S00Z is sourced from the original manufacturer or authorized distributors?
All 1N5246B_S00Z 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 1N5246B_S00Z meets industry standards.
7.What is the process for return or replacement of 1N5246B_S00Z?
All 1N5246B_S00Z units undergo pre-shipment inspection (PSI). If there is an issue with 1N5246B_S00Z, 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 1N5246B_S00Z part is unused and in its original packaging.
Return procedure for 1N5246B_S00Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5246B_S00Z Tags
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MMBZ5240B-7-F
Diodes Incorporated
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onsemi
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Diodes Incorporated
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