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onsemi 1N5240CRL
- Part No.:
- 1N5240CRL
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N5240CRL.pdf
- Description:
- RECTIFIER DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:147,660
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Product details
Overview
1N5240CRL from ON Semiconductor is a 10 V ±2% tolerance, 500 mW hermetically sealed glass Zener diode in DO-204AH (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 stable 10 V zener voltage at 20 mA test current with 17 Ω dynamic impedance and +0.075 %/°C temperature coefficient.
For engineers reviewing the 1N5240CRL datasheet, pinout, applications, or equivalent options, this device serves as a tight-tolerance voltage reference requiring minimal bias current, stable thermal performance across –65°C to +200°C, and compatibility with standard axial-leaded PCB layouts and automated tape-and-reel assembly.
Technical Context
This discrete Zener diode operates in reverse breakdown mode to maintain a precise 10 V reference under regulated DC current conditions. Its double-slug metallurgically bonded glass construction ensures hermetic sealing, low thermal resistance, and long-term stability in harsh environments.
It exhibits a nominal zener voltage of 10 V at IZT = 20 mA, with maximum zener impedance of 17 Ω at that current and 600 Ω at knee current (IZK = 0.25 mA), enabling accurate regulation across varying load conditions while maintaining low leakage (<3 µA at 8 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10 V ±2% at 20 mA - provides tight reference accuracy for feedback networks and calibration circuits |
| Power Dissipation (PD) | 500 mW at TL ≤ 75°C - supports continuous operation in compact, non-heatsinked designs |
| Zener Impedance (ZZT) | 17 Ω max at 20 mA - ensures minimal output voltage variation under load transients |
| Temperature Coefficient | +0.075 %/°C - enables predictable, low-drift behavior in industrial temperature ranges |
| Reverse Leakage (IR) | 3 µA max at 8 V - guarantees low quiescent current in battery-powered or high-impedance reference nodes |
| Package | DO-204AH (DO-35) glass axial - compatible with legacy through-hole assembly and manual prototyping |
Pinout & Package
Hermetically sealed DO-204AH (DO-35) glass package with axial leads: cathode indicated by color band; anode and cathode terminals are non-polarized in forward bias but require correct orientation for zener regulation (cathode positive relative to anode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in zener regulator configuration | Connected to system ground or lower-potential rail; forms return path for zener current |
| Cathode | Regulated output node in zener regulator configuration | Provides stable 10 V output when biased above breakdown; marked with color band |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables tighter regulation than standard ±5% variants (e.g., 1N5240B), reducing need for external trimming |
| Double-slug metallurgical bonding | Improves thermal coupling between die and leads, lowering junction-to-lead thermal resistance for stable VZ |
| Hermetically sealed glass case | Ensures long-term reliability in humid or chemically aggressive environments without encapsulation |
| –65°C to +200°C operating range | Supports deployment in automotive engine compartments, industrial controls, and aerospace subsystems |
Applications
| Industrial Power Supply Feedback | Portable Instrument Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-derived auxiliary supplies. IC Role / Device Role / Timing Role: Zener diode provides precise 10 V reference for optocoupler-based feedback loop. Use Value: ±2% tolerance eliminates need for post-production calibration; 17 Ω ZZT minimizes load-induced error in <10 mA feedback paths. |
Use Scenario: Generating stable reference for 12-bit ADCs in handheld multimeters or data loggers. IC Role / Device Role / Timing Role: Serves as primary voltage reference for analog front-end conditioning circuitry. Use Value: Low 3 µA leakage at 8 V preserves battery life; +0.075 %/°C TC ensures <±1 LSB drift over 0–70°C operating range. |
| Overvoltage Clamp Protection | LED Current Regulation |
Use Scenario: Clamping transient surges on 12 V rail in automotive body control modules. IC Role / Device Role / Timing Role: Shunts excess energy during load-dump events to protect downstream ICs. Use Value: 500 mW rating handles short-duration pulses per Figure 7a; glass package withstands high-energy transients without degradation. |
Use Scenario: Setting constant current for indicator LEDs in industrial HMI panels. IC Role / Device Role / Timing Role: Forms simple two-resistor current source with series resistor. Use Value: Stable 10 V reference enables predictable LED brightness across input voltage variations from 12–24 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5240B | Same 10 V nominal rating but ±5% tolerance; identical DO-35 package and 17 Ω ZZT | Suitable where cost sensitivity outweighs precision; requires wider design margins in feedback loops | Select 1N5240B only if ±5% VZ meets system accuracy requirements and BOM cost reduction is prioritized |
| BZX55C10 | 10 V ±5%, same DO-35 package, 20 Ω ZZT, 500 mW rating; manufactured by Vishay/ON Semi | Industry-standard footprint and sourcing; slightly higher impedance affects regulation under fast load steps | Choose BZX55C10 for multi-source procurement flexibility when ±5% tolerance is acceptable |
Compared with 1N5240B and BZX55C10, the 1N5240CRL offers superior initial accuracy (±2% vs. ±5%) critical for closed-loop systems, while retaining identical thermal and mechanical compatibility-making it ideal for high-reliability analog references where calibration overhead must be minimized.
Availability
1N5240CRL is available at Aetrix Electronics and suitable for industrial power supplies, portable instrumentation, overvoltage protection circuits, and LED biasing applications requiring stable component supply and long-lifecycle support.
Supply support for 1N5240CRL 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 management, analog, and sensor solutions for automotive, industrial, and consumer markets.
The 1N52xxCRL series belongs to ON Semiconductor's legacy Zener diode product line, engineered for high-precision voltage reference and regulation in cost-sensitive, high-volume applications demanding reliability and JEDEC-compliant packaging.
FAQ
What is the zener voltage tolerance of the 1N5240CRL?
The 1N5240CRL has a zener voltage tolerance of ±2% at 10 V nominal, verified per JEDEC specification with test current IZT = 20 mA. This tighter tolerance distinguishes it from the ±5% 1N5240B variant and supports higher-accuracy regulation without external trimming components in the 1N5240CRL design.
What is the maximum power dissipation rating for the 1N5240CRL?
The 1N5240CRL is rated for 500 mW DC power dissipation at lead temperature (TL) ≤ 75°C, with linear derating of 4 mW/°C above that temperature. This rating assumes 3/8″ lead length and applies to steady-state operation in free-air or minimally heatsinked configurations per the official ON Semiconductor datasheet for the 1N5240CRL.
Does the 1N5240CRL have a specified temperature coefficient?
Yes, the 1N5240CRL has a nominal zener voltage temperature coefficient of +0.075 %/°C, measured between 25°C and 125°C at IZT = 20 mA. This positive coefficient indicates VZ increases with temperature, enabling predictable compensation in temperature-stable reference designs using the 1N5240CRL.
What package type does the 1N5240CRL use?
The 1N5240CRL uses the DO-204AH (commonly called DO-35) hermetically sealed glass axial package, with cathode identified by a color band. Its dimensions conform to JEDEC case outline 299-02, and it is supplied in tape-and-reel format (5,000 units per reel) as indicated by the "RL" suffix in the 1N5240CRL part number.
How does the 1N5240CRL compare to the 1N5240B in terms of electrical performance?
The 1N5240CRL and 1N5240B share identical nominal zener voltage (10 V), test current (20 mA), power rating (500 mW), and package (DO-35), but differ in tolerance: 1N5240CRL is ±2%, while 1N5240B is ±5%. All other parameters-including ZZT (17 Ω), temperature coefficient (+0.075 %/°C), and leakage-are identical per the ON Semiconductor datasheet for both 1N5240CRL and 1N5240B.
1N5240CRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1N5240CRL FAQ
1.How can I place an order for 1N5240CRL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5240CRL 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 1N5240CRL reliable?
The price and inventory of 1N5240CRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5240CRL is usually 5 days.
3.What payment methods are accepted for 1N5240CRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5240CRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5240CRL?
1N5240CRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5240CRL 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 1N5240CRL?
For technical support, including 1N5240CRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5240CRL requirements.
6.How does Aetrix verify that 1N5240CRL is sourced from the original manufacturer or authorized distributors?
All 1N5240CRL 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 1N5240CRL meets industry standards.
7.What is the process for return or replacement of 1N5240CRL?
All 1N5240CRL units undergo pre-shipment inspection (PSI). If there is an issue with 1N5240CRL, 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 1N5240CRL part is unused and in its original packaging.
Return procedure for 1N5240CRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5240CRL Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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