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onsemi 1N5235B_S00Z
- Part No.:
- 1N5235B_S00Z
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5235B_S00Z.pdf
- Description:
- DIODE ZENER 6.8V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:9,771
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Product details
Overview
1N5235B_S00Z from ON Semiconductor is a 6.8 V ±5% tolerance, 500 mW DO-35 glass-encapsulated Zener diode optimized for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers 6.8 V nominal Zener voltage at 20 mA test current, with 5 Ω dynamic impedance and ±0.05 %/°C temperature coefficient.
For engineers reviewing the 1N5235B_S00Z datasheet, pinout, applications, or equivalent options, this part supports stable voltage clamping in power supply feedback loops, sensor biasing networks, and microcontroller reset circuitry where tight tolerance and low leakage are critical.
Technical Context
The 1N5235B_S00Z operates as a two-terminal, reverse-biased silicon junction device that maintains a stable voltage across its terminals when conducting in breakdown. Its Zener mechanism dominates conduction above ~5 V, enabling predictable regulation with minimal dependence on current variation within its rated 0.25–20 mA operating range.
Designed for thermal stability in ambient temperatures from –65 °C to +200 °C, it features a 5.0 μA maximum reverse leakage at 5.0 V and a forward voltage of ≤1.2 V at 200 mA - confirming suitability for bidirectional clamp or dual-purpose bias applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.46–7.14 V at IZ = 20 mA - defines precise clamping threshold for voltage reference or overvoltage protection circuits. |
| Power Dissipation (PD) | 500 mW at TA = 25 °C - sets maximum continuous power handling without derating; supports compact PCB layouts with no heatsink required. |
| Zener Impedance (ZZ) | 5.0 Ω max at IZ = 20 mA - ensures minimal output voltage shift under load transients, critical for stable feedback references. |
| Reverse Leakage (IR) | 3.0 μA max at VR = 5.0 V - guarantees low quiescent current draw in battery-powered or high-impedance sensing nodes. |
| Temperature Coefficient (TC) | +0.05 %/°C - enables predictable drift compensation in temperature-sensitive analog designs without external trimming. |
| Package | DO-35 glass axial - hermetically sealed, JEDEC-compliant, 0.137 g weight; supports wave/solder reflow with 230 °C lead temp limit. |
Pinout & Package
DO-35 glass package: axial-leaded, hermetically sealed, cathode indicated by color band. Total length 4.56 mm, body diameter 1.91 mm, lead diameter 0.46 mm. Weight: 0.137 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener breakdown return path | Connected to lower-potential node in regulation circuits; carries full load current during forward bias or Zener conduction. |
| Cathode | Zener breakdown anode / voltage reference output node | Marked with color band; serves as regulated voltage source point in shunt regulator topologies and feedback dividers. |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables single-part selection for cost-sensitive designs requiring guaranteed regulation within 0.34 V of nominal 6.8 V. |
| Low dynamic impedance (5 Ω) | Minimizes output voltage deviation under 10 mA load step changes - essential for ADC reference stability and op-amp biasing. |
| Hermetic DO-35 glass construction | Ensures long-term reliability in humid or corrosive environments; eliminates moisture-induced parameter drift over 10+ year service life. |
| Wide operating junction temperature (–65 to +200 °C) | Supports deployment in automotive engine control modules, industrial sensors, and downhole instrumentation without thermal derating. |
| 0.25 μA typical leakage at 1 V reverse bias | Reduces error contribution in high-impedance voltage divider networks used with precision op-amps or SAR ADCs. |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 6.8 V bias to Wheatstone bridge, rejecting supply ripple. Use Value: Low 5 Ω ZZ prevents gain error from load current variation; ±5% tolerance eliminates need for post-calibration trimming. |
Use Scenario: Generating reliable power-on reset signal for ARM Cortex-M0+ microcontrollers in smart meters. IC Role / Device Role / Timing Role: Zener-clamped RC delay network triggering reset until VCC exceeds 6.8 V × voltage divider ratio. Use Value: 3.0 μA max IR at 5 V ensures fast, deterministic reset release without capacitor discharge delay. |
| Low-Power Analog Front-End Reference | Overvoltage Clamp in RS-485 Transceivers |
Use Scenario: Supplying reference voltage to 16-bit delta-sigma ADCs in portable medical monitors. IC Role / Device Role / Timing Role: Precision shunt regulator establishing stable 6.8 V reference for internal DAC and PGA stages. Use Value: +0.05 %/°C TC limits reference drift to <±1.7 mV over 0–70 °C ambient, meeting EN 60601-1 accuracy requirements. |
Use Scenario: Protecting RS-485 receiver inputs against ESD and surge events exceeding ±15 kV contact discharge. IC Role / Device Role / Timing Role: Bidirectional transient suppressor (with series diode) clamping common-mode voltage to ±6.8 V. Use Value: 1.2 V forward drop allows low-threshold forward conduction during negative surges; glass package withstands repeated 8.3 ms pulse stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | 6.8 V nominal, 1 W rating, DO-41 package, 10 Ω ZZ, ±5% tolerance | Higher power dissipation supports higher-current shunt loads but requires larger PCB footprint and thermal margin. | Select when >500 mW regulation power is needed; not suitable for space-constrained DO-35 footprints. |
| BZX55C6V8 | 6.8 V nominal, 500 mW, DO-35, 10 Ω ZZ, ±5% tolerance, 100 nA IR at 4.5 V | Lower leakage improves high-impedance node accuracy but higher ZZ degrades transient response in feedback paths. | Prefer for ultra-low-power sensor biasing; avoid in closed-loop regulator feedback where 5 Ω ZZ is critical. |
Compared with 1N5235B_S00Z, the 1N4734A offers higher power headroom at the cost of size and impedance, while the BZX55C6V8 trades leakage performance for reduced regulation stiffness - making 1N5235B_S00Z optimal for mid-current, precision-shunt applications demanding both low ZZ and proven thermal robustness.
Availability
1N5235B_S00Z is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset circuits, low-power analog front-end references, and RS-485 overvoltage clamping requiring stable component supply and long-lifecycle support.
Supply support for 1N5235B_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 power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The 1N5235B_S00Z belongs to the legacy 1N52xxB Zener diode family, engineered for general-purpose voltage regulation and reference in cost-sensitive, high-reliability linear circuits where DO-35 packaging and ±5% tolerance meet design requirements.
FAQ
What is the nominal Zener voltage and tolerance of the 1N5235B_S00Z?
The 1N5235B_S00Z has a nominal Zener voltage of 6.8 V with a tolerance of ±5%, meaning its actual breakdown voltage falls between 6.46 V and 7.14 V when tested at 20 mA. This tolerance is verified per ON Semiconductor's 1N5221B–1N5263B datasheet Rev. 3, and applies directly to the 1N5235B_S00Z variant as confirmed in the Electrical Characteristics table.
Does the 1N5235B_S00Z have a specified forward voltage rating?
Yes, the 1N5235B_S00Z specifies a maximum forward voltage (VF) of 1.2 V at 200 mA forward current. This value is documented in the "Electrical Characteristics" section of the ON Semiconductor datasheet and confirms usability in bidirectional clamp configurations where forward conduction may occur during negative transients.
What is the maximum reverse leakage current for the 1N5235B_S00Z, and at what voltage is it measured?
The 1N5235B_S00Z exhibits a maximum reverse leakage current (IR) of 3.0 μA at a reverse voltage (VR) of 5.0 V. This parameter is explicitly listed in the datasheet's Electrical Characteristics table for the 1N5235B entry and reflects worst-case leakage under sub-breakdown bias conditions.
Is the 1N5235B_S00Z packaged in a DO-35 case, and what are its key mechanical dimensions?
Yes, the 1N5235B_S00Z uses the DO-35 glass axial package per JEDEC DO-204AH. Key dimensions include overall length ≥4.56 mm, body diameter 1.91 mm, lead diameter 0.46 mm, and weight 0.137 g - all confirmed in the "Package Outline Drawing" section of the official ON Semiconductor datasheet.
What is the temperature coefficient of the 1N5235B_S00Z, and how does it affect regulation stability?
The 1N5235B_S00Z has a temperature coefficient of +0.05 %/°C, indicating its Zener voltage increases by approximately 3.4 mV per °C rise in junction temperature. This low, positive TC enables predictable drift behavior in ambient temperature ranges from –65 °C to +200 °C, supporting stable operation in unregulated thermal environments without active compensation.
1N5235B_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):
- 6.8 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 5 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
1N5235B_S00Z FAQ
1.How can I place an order for 1N5235B_S00Z through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5235B_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 1N5235B_S00Z reliable?
The price and inventory of 1N5235B_S00Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5235B_S00Z is usually 5 days.
3.What payment methods are accepted for 1N5235B_S00Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5235B_S00Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5235B_S00Z?
1N5235B_S00Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5235B_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 1N5235B_S00Z?
For technical support, including 1N5235B_S00Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5235B_S00Z requirements.
6.How does Aetrix verify that 1N5235B_S00Z is sourced from the original manufacturer or authorized distributors?
All 1N5235B_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 1N5235B_S00Z meets industry standards.
7.What is the process for return or replacement of 1N5235B_S00Z?
All 1N5235B_S00Z units undergo pre-shipment inspection (PSI). If there is an issue with 1N5235B_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 1N5235B_S00Z part is unused and in its original packaging.
Return procedure for 1N5235B_S00Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5235B_S00Z Tags
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