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onsemi 1N5236B_T50A
- Part No.:
- 1N5236B_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N5236B_T50A.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:3,736
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Product details
Overview
1N5236B_T50A from ON Semiconductor is a 7.5 V, 500 mW silicon Zener diode in DO-35 glass package with ±5% tolerance, 6.0 Ω dynamic impedance at 20 mA, and -65°C to +200°C operating junction temperature. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the 1N5236B_T50A datasheet, pinout, applications, or equivalent options, this page delivers verified Zener voltage, thermal derating behavior, cathode identification, leakage current at rated VR, and direct alternatives for voltage reference design validation.
Technical Context
This device operates as a two-terminal voltage reference using reverse-biased Zener breakdown. Its 7.5 V nominal Zener voltage is specified at 20 mA test current (IZ), with 6.0 Ω dynamic impedance (ZZ) ensuring stable regulation under load variation. Temperature coefficient is +0.058 %/°C, indicating positive drift with rising temperature.
The DO-35 hermetically sealed glass package supports axial lead mounting and enables reliable operation up to 200°C junction temperature. Power dissipation is rated at 500 mW at 25°C, derating linearly by 4.0 mW/°C above 50°C ambient - critical for thermal design in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.5 V nominal at IZ = 20 mA - defines precise regulation point for reference and clamp applications |
| Power Dissipation (PD) | 500 mW at TA = 25°C - sets maximum continuous power handling before thermal shutdown risk |
| Dynamic Impedance (ZZ) | 6.0 Ω at IZ = 20 mA - determines output voltage stability against current fluctuations |
| Zener Tolerance | ±5% - ensures VZ falls between 7.125 V and 7.875 V, enabling predictable circuit margining |
| Reverse Leakage (IR) | 3.0 μA max at VR = 6.0 V - confirms low standby current in high-impedance bias networks |
| Temperature Coefficient | +0.058 %/°C - quantifies VZ drift magnitude per degree Celsius rise in junction temperature |
| Package | DO-35 glass - axial-leaded, hermetically sealed, 0.137 g weight, JEDEC DO-204AH compliant |
Pinout & Package
DO-35 glass package: axial leads, cathode identified by color band (black or dark stripe) on body end. Total length 4.56 mm, body diameter 1.91 mm, lead diameter 0.46 mm. Hermetically sealed, weight 0.137 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node in reverse-bias configuration; establishes reference return path |
| Cathode | Zener breakdown terminal / regulated output node | Marked with color band; supplies stable 7.5 V when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| Stable 7.5 V reference | Guaranteed 7.125–7.875 V range at 20 mA enables accurate analog sensing and feedback loops |
| Low dynamic impedance | 6.0 Ω maintains <15 mV output shift across ±5 mA load change - critical for precision references |
| Wide temperature range | -65°C to +200°C TJ operation supports automotive under-hood, industrial motor control, and aerospace environments |
| Hermetic glass seal | DO-35 construction prevents moisture ingress and long-term parameter drift in humid or corrosive conditions |
| Standardized marking | "236B" top mark (per ON spec) enables rapid visual identification and automated optical inspection compatibility |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Reset Circuitry |
|---|---|
Use Scenario: Stabilizing ADC reference voltage in 4–20 mA loop-powered transmitters operating at 85°C ambient. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference for op-amp buffer driving SAR ADC input. Use Value: 7.5 V output with ±5% tolerance and +0.058 %/°C TC ensures <0.5% full-scale error across temperature without calibration. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ MCU in battery-backed smart meter design. IC Role / Device Role / Timing Role: Reverse-biased Zener clamping VDD rail to 7.5 V during brown-out detection. Use Value: 3.0 μA leakage at 6.0 V minimizes quiescent current drain while maintaining fast response to supply dips. |
| DC-DC Converter Feedback Network | ESD Protection Clamp |
Use Scenario: Setting regulated output of isolated flyback converter (12 V → 5 V) with optocoupler feedback. IC Role / Device Role / Timing Role: Zener referenced to secondary-side ground, defining error amplifier setpoint. Use Value: 6.0 Ω ZZ ensures <10 mV output ripple contribution even with 100 kHz switching noise coupling. |
Use Scenario: Protecting RS-485 transceiver inputs against ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp diverting transient energy to ground before IC damage. Use Value: DO-35 package capacitance <2 pF avoids signal integrity degradation on 10 Mbps differential bus lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | 5.6 V nominal, 1 W power rating, 5 Ω ZZ at 45 mA - higher power but lower voltage | Requires resistor recalculation in 7.5 V reference designs; unsuitable for space-constrained DO-35 footprints | Select only if system requires >500 mW dissipation or 5.6 V regulation; verify thermal layout for 1 W rating |
| BZX55C7V5 | 7.5 V nominal, ±5% tolerance, 600 mW rating, DO-35 package - same voltage, higher PD, different manufacturer | Identical electrical function and footprint; differs in TC (+0.06 %/°C vs. +0.058 %/°C) and IR (5 μA @ 6 V) | Drop-in replacement where 5 μA leakage is acceptable; confirm BOM compliance for ON Semi vs. NXP sourcing |
Compared with 1N5236B_T50A, 1N4734A offers higher power but mismatched voltage, while BZX55C7V5 matches voltage and package but has slightly higher leakage and divergent TC - both require validation in thermal and noise-sensitive reference paths.
Availability
1N5236B_T50A is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, microcontroller reset circuitry, DC-DC converter feedback networks, and ESD protection clamps requiring stable component supply and consistent Zener voltage performance.
Supply support for 1N5236B_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 (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor components for automotive, industrial, cloud computing, and IoT applications.
The 1N52xxB series is part of ON Semiconductor's legacy Zener diode portfolio designed for general-purpose voltage regulation, reference, and protection in cost-sensitive, high-reliability analog circuits.
FAQ
What is the exact Zener voltage range for 1N5236B_T50A at 20 mA?
The 1N5236B_T50A has a guaranteed Zener voltage range of 7.125 V to 7.875 V at IZ = 20 mA and TA = 25°C, reflecting its ±5% tolerance specification. This range remains valid across the full -65°C to +200°C junction temperature range, though actual VZ shifts predictably per its +0.058 %/°C temperature coefficient. The 1N5236B_T50A datasheet confirms these limits in the Electrical Characteristics table.
Does 1N5236B_T50A have a defined forward voltage specification?
Yes - the 1N5236B_T50A specifies a maximum forward voltage (VF) of 1.2 V at IF = 200 mA, per the Absolute Maximum Ratings section. This value applies only during forward conduction and is not used in standard Zener regulation mode. The 1N5236B_T50A does not define VF at lower currents like 10 mA, and forward characteristics are secondary to its reverse-breakdown function.
How is the cathode identified on the 1N5236B_T50A DO-35 package?
The cathode of the 1N5236B_T50A is marked by a distinct color band (typically black or dark gray) located at one end of the DO-35 glass body. This band aligns with the cathode terminal, which must be connected to the higher-potential node in reverse-bias regulation configurations. The 1N5236B_T50A top marking "236B" appears adjacent to the anode end per ON Semiconductor's marking standard.
What is the thermal derating behavior of 1N5236B_T50A above 50°C ambient?
The 1N5236B_T50A derates linearly at 4.0 mW/°C above 50°C ambient temperature. Starting from its 500 mW rating at 25°C, usable power drops to 400 mW at 75°C and 300 mW at 100°C ambient. This derating curve is defined in the Absolute Maximum Ratings table and must be applied in thermal design to avoid exceeding the 200°C maximum junction temperature. The 1N5236B_T50A datasheet provides no derating below 50°C.
Can 1N5236B_T50A be used in place of 1N5236B without considering the "_T50A" suffix?
Yes - the "_T50A" suffix denotes tape-and-reel packaging per ON Semiconductor's ordering nomenclature and does not affect electrical or thermal specifications. The 1N5236B_T50A shares identical Zener voltage, impedance, leakage, temperature coefficient, and package dimensions with the base 1N5236B. All parametric data in the 1N5221B–1N5263B datasheet apply directly to the 1N5236B_T50A variant.
1N5236B_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):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 6 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
1N5236B_T50A FAQ
1.How can I place an order for 1N5236B_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5236B_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 1N5236B_T50A reliable?
The price and inventory of 1N5236B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5236B_T50A is usually 5 days.
3.What payment methods are accepted for 1N5236B_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5236B_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5236B_T50A?
1N5236B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5236B_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 1N5236B_T50A?
For technical support, including 1N5236B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5236B_T50A requirements.
6.How does Aetrix verify that 1N5236B_T50A is sourced from the original manufacturer or authorized distributors?
All 1N5236B_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 1N5236B_T50A meets industry standards.
7.What is the process for return or replacement of 1N5236B_T50A?
All 1N5236B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N5236B_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 1N5236B_T50A part is unused and in its original packaging.
Return procedure for 1N5236B_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5236B_T50A Tags
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