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onsemi 1N5243B_S00Z
- Part No.:
- 1N5243B_S00Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5243B_S00Z.pdf
- Description:
- DIODE ZENER 13V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:2,261
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Product details
Overview
1N5243B_S00Z from ON Semiconductor is a 13 V, ±5% tolerance, 500 mW glass-passivated Zener diode in DO-35 package, designed for precision voltage regulation and reference applications in low-power analog circuits, power supply feedback loops, and overvoltage protection. It delivers 13.65 V maximum Zener voltage at 9.5 mA test current with 13 Ω dynamic impedance and 0.5 μA reverse leakage at 10.4 V.
For engineers reviewing the 1N5243B_S00Z datasheet, pinout, applications, or equivalent options, key selection criteria include its 13 V nominal Zener voltage, DO-35 axial glass package compatibility with through-hole assembly, 500 mW power rating, low 13 Ω Zener impedance, and ±0.079 %/°C temperature coefficient - critical for stable reference performance across industrial temperature ranges.
Technical Context
This device operates as a two-terminal voltage reference using controlled avalanche and Zener breakdown mechanisms. Its 13 V nominal Zener voltage is specified at IZ = 9.5 mA, with guaranteed min/max limits of 12.35 V and 13.65 V. The 13 Ω dynamic impedance (ZZ) ensures tight regulation under varying load conditions.
Thermal design is supported by a -65 °C to +200 °C operating junction temperature range and 4.0 mW/°C derating above 50 °C ambient. The DO-35 hermetically sealed glass package provides reliable long-term stability and moisture resistance for industrial-grade applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 13 V - precise DC reference point for feedback and clamping circuits |
| Zener Voltage Range | 12.35 V to 13.65 V at 9.5 mA - ensures ±5% tolerance compliance for calibration-critical designs |
| Zener Impedance | 13 Ω at 9.5 mA - low dynamic resistance minimizes output voltage variation with current changes |
| Power Dissipation | 500 mW - supports continuous operation in compact low-power regulator stages |
| Reverse Leakage Current | 0.5 μA at 10.4 V - enables ultra-low standby current in battery-backed reference circuits |
| Temperature Coefficient | +0.079 %/°C - positive TC allows predictable drift compensation in multi-diode references |
| Package | DO-35 - standard axial glass package with cathode band marking, compatible with legacy through-hole PCB layouts |
Pinout & Package
DO-35 glass axial package: hermetically sealed, 0.137 g weight, 4.56 mm body length, 1.91 mm max diameter, cathode indicated by color band. Lead length ≥25.4 mm per JEDEC DO-204AH.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode bias reference | Connected to lower potential side in reverse-biased regulation; defines polarity for proper orientation on PCB |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher potential side; delivers stable 13 V reference when reverse biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables use without post-manufacturing trimming in cost-sensitive consumer and industrial power supplies |
| Low 13 Ω dynamic impedance | Maintains <1% output deviation across 5–15 mA load current variations in feedback networks |
| +0.079 %/°C tempco | Allows predictable thermal drift modeling for temperature-compensated reference strings |
| 0.5 μA max reverse leakage at 10.4 V | Reduces quiescent current error in high-impedance voltage divider references |
| DO-35 glass package | Provides >10-year parametric stability under 85 °C/85% RH environmental stress testing |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener reference node defining secondary-side error amplifier threshold. Use Value: 13 V nominal Zener voltage sets precise 12–13.8 V output window; ±5% tolerance avoids need for external trim resistors. | Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 13 V. IC Role / Device Role / Timing Role: Shunt clamp limiting input voltage during ESD or inductive kick events. Use Value: 13.65 V max Zener voltage ensures clamping before damage threshold of 15 V-rated GPIOs. |
| Low-Power Analog Reference | Temperature-Stable Bias Generator |
Use Scenario: Providing stable bias for op-amp comparators in battery-operated sensor nodes. IC Role / Device Role / Timing Role: Precision DC reference source for comparator hysteresis thresholds. Use Value: 0.5 μA reverse leakage preserves battery life; +0.079 %/°C TC enables predictable offset correction. | Use Scenario: Generating fixed bias current for BJT amplifiers in instrumentation front-ends. IC Role / Device Role / Timing Role: Stable voltage reference driving constant-current source resistor. Use Value: 13 Ω Zener impedance ensures <0.13 V shift over 10 mA current variation, maintaining gain stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V nominal, 1 Ω higher ZZ, same DO-41 package | Slightly lower reference voltage; requires circuit recalibration for 13 V target | Select when 12 V reference suffices and DO-41 footprint is preferred |
| BZX55C13 | Same 13 V rating, 10 Ω ZZ, DO-35 package, tighter 2% tolerance | Higher cost; better regulation but no advantage in systems tolerant of ±5% | Select when tighter voltage tolerance is required and budget permits premium grade |
Compared with 1N4742A and BZX55C13, the 1N5243B_S00Z offers optimal balance of cost, DO-35 footprint compatibility, and ±5% tolerance - making it ideal for high-volume industrial power supplies where 13 V reference accuracy and long-term stability are prioritized over sub-1% precision.
Availability
1N5243B_S00Z is available at Aetrix Electronics and suitable for power supply feedback reference, overvoltage clamp protection, and low-power analog reference applications requiring stable component supply and long-lifecycle support.
Supply support for 1N5243B_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, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The 1N52xxB series belongs to ON Semiconductor's general-purpose Zener diode product line, engineered for reliable voltage regulation and reference in cost-sensitive, high-volume power management and protection circuits.
FAQ
What is the nominal Zener voltage of the 1N5243B_S00Z?
The 1N5243B_S00Z has a nominal Zener voltage of 13 V, with a guaranteed range of 12.35 V to 13.65 V at 9.5 mA test current. This value is measured under thermal equilibrium conditions at lead temperature 30°C ±1°C, per ON Semiconductor's electrical characterization methodology. The 1N5243B_S00Z is rated for ±5% tolerance, consistent with industry-standard Zener diode specifications.
What package type does the 1N5243B_S00Z use?
The 1N5243B_S00Z uses the DO-35 glass axial package, defined by JEDEC DO-204AH. It features a hermetically sealed glass body, cathode band marking, 4.56 mm body length, and 1.91 mm maximum diameter. This package supports through-hole mounting and provides long-term parametric stability under industrial environmental stress conditions.
What is the Zener impedance of the 1N5243B_S00Z and why does it matter?
The 1N5243B_S00Z has a Zener impedance (ZZ) of 13 Ω at 9.5 mA test current. This low dynamic impedance ensures minimal output voltage variation when load current changes - critical for maintaining regulation accuracy in feedback loops and reference circuits. For example, a 1 mA current shift causes only ~13 mV deviation, directly supporting stable performance in precision analog designs.
Does the 1N5243B_S00Z have a specified temperature coefficient?
Yes, the 1N5243B_S00Z has a temperature coefficient of +0.079 %/°C. This positive coefficient indicates that its Zener voltage increases predictably with rising temperature, enabling accurate thermal drift modeling in reference string designs. The coefficient is measured across the full -65 °C to +200 °C junction temperature range and supports stable operation in extended industrial environments.
What is the maximum reverse leakage current for the 1N5243B_S00Z?
The 1N5243B_S00Z specifies a maximum reverse leakage current of 0.5 μA at 10.4 V (90% of nominal Zener voltage). This ultra-low leakage supports energy-efficient operation in battery-powered and high-impedance reference circuits, minimizing parasitic current paths that could degrade accuracy or reduce standby time in portable electronics.
1N5243B_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):
- 13 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 13 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 9.9 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
1N5243B_S00Z FAQ
1.How can I place an order for 1N5243B_S00Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5243B_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 1N5243B_S00Z reliable?
The price and inventory of 1N5243B_S00Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5243B_S00Z is usually 5 days.
3.What payment methods are accepted for 1N5243B_S00Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5243B_S00Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5243B_S00Z?
1N5243B_S00Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5243B_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 1N5243B_S00Z?
For technical support, including 1N5243B_S00Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5243B_S00Z requirements.
6.How does Aetrix verify that 1N5243B_S00Z is sourced from the original manufacturer or authorized distributors?
All 1N5243B_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 1N5243B_S00Z meets industry standards.
7.What is the process for return or replacement of 1N5243B_S00Z?
All 1N5243B_S00Z units undergo pre-shipment inspection (PSI). If there is an issue with 1N5243B_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 1N5243B_S00Z part is unused and in its original packaging.
Return procedure for 1N5243B_S00Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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