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onsemi 1N5241B_T50A
- Part No.:
- 1N5241B_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5241B_T50A.pdf
- Description:
- DIODE ZENER 11V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:2,184
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Product details
Overview
1N5241B_T50A from ON Semiconductor is a 5% tolerance, 11 V Zener diode in DO-35 glass package, rated for 500 mW power dissipation at 25°C, with 22 Ω dynamic impedance at 20 mA test current and ±0.076 %/°C temperature coefficient - used for precision voltage reference and overvoltage protection in low-power analog circuits.
For engineers reviewing the 1N5241B_T50A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, cathode identification, and direct-fit alternatives for board-level voltage regulation and clamping design.
Technical Context
This device operates as a silicon planar Zener diode with controlled avalanche breakdown at nominal 11 V, designed for stable reverse-bias voltage regulation under DC or low-frequency transient conditions. Its DO-35 hermetically sealed glass package ensures long-term parameter stability and low leakage.
It exhibits 2.0 μA maximum reverse leakage at 8.4 V (90% of VZ), 1.2 V forward voltage at 200 mA, and junction temperature range from –65°C to +200°C - enabling use in industrial sensor signal conditioning and automotive body-control modules where ambient thermal cycling occurs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.0 V nominal, min 10.45 V / max 11.55 V at IZ = 20 mA - defines regulated output voltage under stable bias conditions. |
| Power Dissipation (PD) | 500 mW at TA = 25°C, derates 4.0 mW/°C above 50°C - sets maximum continuous power handling before thermal runaway. |
| Dynamic Impedance (ZZ) | 22 Ω at IZ = 20 mA - determines regulation stiffness; lower value improves load regulation in reference circuits. |
| Reverse Leakage (IR) | 2.0 μA max at VR = 8.4 V - critical for low-current bias networks where leakage could shift operating points. |
| Temperature Coefficient (TC) | ±0.076 %/°C - quantifies VZ drift per degree Celsius; enables prediction of reference error across operating temperature range. |
| Forward Voltage (VF) | 1.2 V max at IF = 200 mA - defines conduction threshold when used bidirectionally or in series-clamp configurations. |
Pinout & Package
DO-35 glass axial package: hermetically sealed, 0.533 mm diameter, 4.56 mm length, cathode identified by single color band. Weight: 0.137 g. JEDEC DO-204AH compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to ground or lower potential in Zener regulation mode | Provides current entry path during forward conduction; referenced to cathode for reverse-bias voltage clamp setup. |
| Cathode | Negative terminal in forward bias; connected to higher potential in Zener regulation mode | Marked by color band; serves as regulated output node in shunt regulator configuration; must be held at target voltage relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 5% Zener voltage tolerance | Ensures predictable regulation window without post-production trimming; suitable for cost-sensitive consumer and industrial references. |
| Low dynamic impedance (22 Ω) | Maintains tight output voltage under varying load currents up to 20 mA - critical for stable feedback in LDO pre-regulators. |
| Hermetic DO-35 glass package | Guarantees long-term parameter stability and moisture resistance - essential for reliability in unsealed industrial enclosures. |
| Wide junction temperature range (–65°C to +200°C) | Supports operation in under-hood automotive electronics and high-temperature industrial sensors without derating penalties. |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
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 11 V bias to Wheatstone bridge. Use Value: Maintains <±1% output accuracy across –40°C to +85°C ambient due to low TC and stable ZZ. |
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as crowbar element to limit voltage to 11.55 V peak. Use Value: Responds within nanoseconds to ESD pulses; 500 mW rating handles 8.3 ms surge per JEDEC spec. |
| Low-Power Microcontroller Reset Circuit | Legacy RS-232 Line Receiver Biasing |
Use Scenario: Generating clean reset threshold for 3.3 V MCUs using resistor-divider + Zener clamp. IC Role / Device Role / Timing Role: Precision voltage clamp defining logic-high threshold for RC-based reset generator. Use Value: 2.0 μA leakage at 8.4 V prevents capacitor discharge delay drift in long-duration reset timing. |
Use Scenario: Providing negative bias voltage for RS-232 receiver input stage in legacy industrial serial interfaces. IC Role / Device Role / Timing Role: Reverse-connected Zener generating –11 V rail from positive supply via charge pump. Use Value: Stable 11 V Zener voltage enables accurate –12 V compliance margin per RS-232 standard. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A | 10 V nominal, 5% tolerance, 1.0 W power rating, DO-41 package | Higher power handling but larger footprint; less precise TC (±0.05%/°C) and higher ZZ (17 Ω) | Select when >500 mW surge energy absorption is required and board space allows DO-41. |
| BZX55C11 | 11 V nominal, 5% tolerance, 500 mW, DO-35 package, 100 nA IR at 8.4 V | Lower leakage (100 nA vs. 2.0 μA) but higher ZZ (30 Ω) and wider VZ spread (10.4–11.6 V) | Prefer for ultra-low-power battery monitoring where leakage dominates error budget. |
Compared with 1N5241B_T50A, 1N4740A offers higher surge capacity but requires PCB layout change, while BZX55C11 improves leakage performance at the expense of regulation stiffness - making 1N5241B_T50A optimal for balanced precision, size, and thermal robustness in compact analog designs.
Availability
1N5241B_T50A is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and low-power microcontroller reset circuits requiring stable component supply and consistent Zener voltage performance.
Supply support for 1N5241B_T50A 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 power management, analog, sensor, and discrete solutions for automotive, industrial, and cloud power applications.
The 1N52xxB series is part of ON Semiconductor's legacy Zener diode portfolio, engineered for general-purpose voltage regulation and clamping in cost-sensitive, thermally demanding environments.
FAQ
What is the Zener voltage tolerance and test condition for 1N5241B_T50A?
The 1N5241B_T50A has a ±5% Zener voltage tolerance, specified as 10.45 V minimum to 11.55 V maximum at a test current of 20 mA and lead temperature of 30°C ±1°C. This tolerance reflects manufacturing variation under standardized thermal conditions and is confirmed in the ON Semiconductor 1N5221B–1N5263B datasheet Rev. 3.
Does 1N5241B_T50A have a defined forward voltage specification?
Yes, the 1N5241B_T50A specifies a maximum forward voltage of 1.2 V at 200 mA forward current. This parameter is relevant when the device is used in forward-conduction mode - for example, in series protection or dual-direction clamp configurations - and ensures predictable conduction loss under high-current transients.
How does thermal derating apply to 1N5241B_T50A in real-world PCB layouts?
The 1N5241B_T50A derates linearly at 4.0 mW/°C above 50°C ambient, meaning its usable power drops to 400 mW at 75°C and 300 mW at 100°C. In PCB designs with limited copper area or airflow, actual junction temperature rise must be calculated using package thermal resistance (RθJA ≈ 250°C/W for DO-35) to avoid exceeding the 200°C maximum junction rating.
Can 1N5241B_T50A be used in place of 1N5241B without considering the "_T50A" suffix?
Yes - the "_T50A" suffix denotes tape-and-reel packaging per ON Semiconductor's ordering convention and does not affect electrical or mechanical specifications. The 1N5241B_T50A shares identical Zener voltage, impedance, leakage, and package dimensions with the bulk 1N5241B, and both comply with DO-35 mechanical standards and JEDEC DO-204AH.
What is the cathode identification method for 1N5241B_T50A?
The cathode of the 1N5241B_T50A is marked by a single color band on the DO-35 glass body, consistent with industry-standard polarity marking. This band must be oriented toward the higher-potential node in shunt regulation applications and is verified in ON Semiconductor's top-mark information diagram showing "1st line: ON Semiconductor Logo / 2nd line: 24 / 3rd line: 1B" for this variant.
1N5241B_T50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N5241B_T50A FAQ
1.How can I place an order for 1N5241B_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5241B_T50A 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 1N5241B_T50A reliable?
The price and inventory of 1N5241B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5241B_T50A is usually 5 days.
3.What payment methods are accepted for 1N5241B_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5241B_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5241B_T50A?
1N5241B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5241B_T50A 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 1N5241B_T50A?
For technical support, including 1N5241B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5241B_T50A requirements.
6.How does Aetrix verify that 1N5241B_T50A is sourced from the original manufacturer or authorized distributors?
All 1N5241B_T50A 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 1N5241B_T50A meets industry standards.
7.What is the process for return or replacement of 1N5241B_T50A?
All 1N5241B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5241B_T50A, 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 1N5241B_T50A part is unused and in its original packaging.
Return procedure for 1N5241B_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5241B_T50A Tags
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MMBZ5240B-7-F
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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