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onsemi 1N5247B_S00Z
- Part No.:
- 1N5247B_S00Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5247B_S00Z.pdf
- Description:
- DIODE ZENER 17V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:8,703
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Product details
Overview
1N5247B_S00Z from ON Semiconductor is a 5% tolerance, 17 V nominal Zener diode in DO-35 glass package, rated for 500 mW power dissipation at 25°C, with 19 Ω dynamic impedance at 12 mA test current and 0.1 μA reverse leakage at 13.6 V. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the 1N5247B_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, power supply feedback, and signal clamping.
Technical Context
The 1N5247B_S00Z operates as a silicon planar Zener diode with avalanche breakdown mechanism above 6 V, exhibiting a positive temperature coefficient of +0.084 %/°C. Its junction is hermetically sealed in a DO-35 glass package with axial leads and cathode band marking.
It is characterized at 25°C with 12 mA Zener test current (IZ), 13.6 V rated reverse voltage (VR) for leakage measurement, and 1.2 V maximum forward voltage at 200 mA. Thermal resistance from junction-to-ambient is 250 °C/W (calculated from 500 mW PD and 4.0 mW/°C derating above 50°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16.15 V min / 17.0 V typ / 17.85 V max @ IZ = 12 mA - defines stable regulation range under nominal bias |
| Dynamic Impedance (ZZ) | 19 Ω @ IZ = 12 mA - determines output voltage stability against load current variation |
| Reverse Leakage (IR) | 0.1 μA @ VR = 13.6 V - ensures minimal quiescent current in standby regulation paths |
| Power Dissipation (PD) | 500 mW @ TA = 25°C - sets maximum continuous DC power handling before thermal shutdown risk |
| Temperature Coefficient (TC) | +0.084 %/°C - quantifies VZ drift per degree Celsius rise, critical for temperature-sensitive references |
| Forward Voltage (VF) | 1.2 V max @ IF = 200 mA - specifies conduction loss when used in bidirectional clamp or polarity protection |
Pinout & Package
DO-35 glass axial package: hermetically sealed, 0.137 g mass, 4.56 mm body length, 1.91 mm body diameter, 3.05 mm lead spacing, cathode identified by single color band near one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal during forward bias | Connected to lower-potential node in Zener regulation; carries full load current in shunt configuration |
| Cathode | Negative terminal during forward bias; Zener breakdown terminal | Marked with color band; connected to regulated output node; sinks current to maintain reference voltage |
Key Features
| Feature | Design Value |
|---|---|
| 5% Zener voltage tolerance | Enables cost-effective selection without tight-bin sorting while maintaining ±0.85 V regulation window at 17 V |
| DO-35 hermetic glass package | Provides long-term parameter stability and moisture resistance for industrial and automotive under-hood environments |
| Low reverse leakage (0.1 μA) | Minimizes error current in high-impedance reference dividers and battery-powered sensor circuits |
| Controlled temperature coefficient (+0.084 %/°C) | Supports predictable VZ drift compensation in temperature-critical analog front-ends |
| JEDEC DO-204AH compliant | Ensures mechanical interchangeability with legacy 1N52xx series across global manufacturing and repair workflows |
Applications
| Industrial Sensor Reference | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 17 V reference for 16-bit ADC biasing in factory-floor temperature transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference regulating excitation voltage for bridge sensors and scaling amplifier gain. Use Value: 19 Ω ZZ and 0.084 %/°C TC enable <±0.5 LSB error contribution over –40°C to +85°C operating range. |
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in embedded host controllers. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor limiting peak voltage to 17.85 V during ESD or load-dump events. Use Value: 500 mW PD rating sustains 100 ns, 1 A surge pulses without degradation; 0.1 μA IR avoids standby power drain. |
| Programmable Power Supply Feedback | Legacy Microcontroller Reset Circuit |
Use Scenario: Setting adjustable output voltage in lab-grade bench PSUs using TL431-based feedback loop with external Zener. IC Role / Device Role / Timing Role: Precision voltage reference defining upper threshold of optocoupler-driven feedback path. Use Value: Tight 5% VZ tolerance and low ZZ ensure ±0.3% output voltage accuracy across 0–3 A load range. |
Use Scenario: Generating clean 17 V reset threshold for vintage 8051-based control modules with discrete reset logic. IC Role / Device Role / Timing Role: Zener-triggered comparator input establishing brown-out detection level. Use Value: Cathode-band polarity and DO-35 footprint allow drop-in replacement in 20+ year-old PCBs without layout change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5247B (no suffix) | Same electrical specs and DO-35 package; S00Z denotes tape-and-reel packaging per ON Semi standard. | No functional difference; S00Z variant optimized for automated SMT placement via 24 mm tape width and 2 mm pitch. | Select 1N5247B_S00Z for high-volume pick-and-place assembly; use bare 1N5247B for hand-solder prototyping or through-hole rework. |
| BZX55C16 | 16 V nominal, 5% tolerance, DO-35, but higher ZZ (30 Ω) and higher IR (0.5 μA @ 12.8 V). | Less precise regulation in low-current references; acceptable for non-critical clamping where tighter VZ not required. | Choose BZX55C16 only if 17 V regulation is not mandatory and higher leakage is tolerable in battery-backed systems. |
Compared with 1N5247B_S00Z, the base 1N5247B offers identical electrical performance but different packaging format, while BZX55C16 trades 1 V lower nominal voltage and degraded impedance/leakage for broader distributor availability in legacy designs.
Availability
1N5247B_S00Z is available at Aetrix Electronics and suitable for industrial sensor reference, USB port overvoltage clamp, and programmable power supply feedback requiring stable component supply, JEDEC-compliant packaging, and traceable lot-level documentation.
Supply support for 1N5247B_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 manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N52xxB series was designed as a general-purpose, high-reliability Zener diode family for voltage regulation and protection in cost-sensitive, high-volume applications across industrial and computing segments.
FAQ
What is the Zener voltage tolerance of the 1N5247B_S00Z?
The 1N5247B_S00Z has a guaranteed Zener voltage tolerance of ±5% around its nominal 17 V rating, meaning measured VZ falls between 16.15 V and 17.85 V when tested at 12 mA and 25°C. This tolerance is specified in the ON Semiconductor datasheet Rev. 3 and applies to all units shipped under this part number, including the S00Z tape-and-reel variant.
Does the 1N5247B_S00Z have a cathode marking, and how is it identified?
Yes, the 1N5247B_S00Z uses a single color band on the DO-35 glass body to denote the cathode terminal, consistent with JEDEC DO-204AH standards. The banded end must be connected to the higher-potential node in Zener regulation mode. This marking is visible under standard visual inspection and confirmed in the mechanical drawing DO35AREV03 referenced in the official datasheet.
What is the maximum power dissipation for the 1N5247B_S00Z at 75°C ambient?
At 75°C ambient, the 1N5247B_S00Z is derated linearly from its 500 mW rating at 25°C using the specified 4.0 mW/°C slope. The allowable power is 500 mW − (75 − 25) × 4.0 mW = 300 mW. Exceeding this value risks junction overheating beyond the +200°C absolute maximum TJ, potentially causing parametric shift or failure.
Can the 1N5247B_S00Z be used in forward-bias applications?
Yes, the 1N5247B_S00Z supports forward conduction with a maximum forward voltage of 1.2 V at 200 mA, as specified in the Absolute Maximum Ratings table. It is commonly used in bidirectional ESD clamps or polarity protection circuits where both forward and reverse characteristics matter, though its primary design intent remains Zener regulation in reverse bias.
How does the temperature coefficient affect the 1N5247B_S00Z in a precision reference circuit?
The 1N5247B_S00Z has a temperature coefficient of +0.084 %/°C, meaning its Zener voltage increases by approximately 14.3 mV per °C rise from 25°C. In a precision reference circuit spanning –25°C to +75°C, this introduces up to ±86 mV drift - a key factor requiring compensation or calibration if sub-0.1% voltage stability is required across temperature.
1N5247B_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):
- 17 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 19 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 13 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
1N5247B_S00Z FAQ
1.How can I place an order for 1N5247B_S00Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5247B_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 1N5247B_S00Z reliable?
The price and inventory of 1N5247B_S00Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5247B_S00Z is usually 5 days.
3.What payment methods are accepted for 1N5247B_S00Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5247B_S00Z transactions.
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4.How is shipping managed for 1N5247B_S00Z?
1N5247B_S00Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5247B_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 1N5247B_S00Z?
For technical support, including 1N5247B_S00Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5247B_S00Z requirements.
6.How does Aetrix verify that 1N5247B_S00Z is sourced from the original manufacturer or authorized distributors?
All 1N5247B_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 1N5247B_S00Z meets industry standards.
7.What is the process for return or replacement of 1N5247B_S00Z?
All 1N5247B_S00Z units undergo pre-shipment inspection (PSI). If there is an issue with 1N5247B_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 1N5247B_S00Z part is unused and in its original packaging.
Return procedure for 1N5247B_S00Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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