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onsemi 1N753A_T50R
- Part No.:
- 1N753A_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N753A_T50R.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:8,699
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Product details
Overview
1N753A_T50R from Fairchild Semiconductor is a 5.6 V, ±5% tolerance silicon Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C, with 7 Ω dynamic impedance at 20 mA and 0.1 µA reverse leakage at 1 V, used for precision voltage regulation in low-power analog reference circuits.
For engineers reviewing the 1N753A_T50R datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, thermal derating behavior, cathode-band polarity marking, and DO-35 lead-form compatibility with through-hole PCB layouts.
Technical Context
This device operates as a two-terminal voltage-reference diode relying on controlled reverse-biased avalanche breakdown. Its 5.6 V nominal zener voltage is specified at 20 mA test current with tight 5% tolerance and low 7 Ω dynamic impedance, enabling stable regulation under moderate load variation.
Thermal performance is defined by absolute maximum ratings: 500 mW power dissipation up to 75°C lead temperature, derating linearly at 4.0 mW/°C above that, with full operational range from –65°C to +200°C junction and storage temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ @ IZ = 20 mA | 5.89 V (min) to 6.51 V (max); defines usable regulation band for precision biasing |
| Tolerance | ±5%; ensures predictable voltage setpoint across production lots |
| ZZ @ IZ = 20 mA | 7 Ω; low dynamic impedance minimizes output voltage shift with load current changes |
| PD @ TL ≤ 75°C | 500 mW; sets maximum continuous power handling before thermal derating applies |
| IR @ VR = 1 V | 0.1 µA; ultra-low leakage preserves accuracy in high-impedance reference nodes |
| Package | DO-35 glass case; industry-standard axial-leaded package with cathode band marking |
Pinout & Package
DO-35 glass axial package with cathode identified by a single color band on the body; no active pin numbering-cathode and anode are unidirectional terminals defined by physical marking.
Key Features
| Feature | Design Value |
|---|---|
| Stable 5.6 V reference | Guaranteed 5.89–6.51 V range at 20 mA enables repeatable circuit calibration |
| Low dynamic impedance | 7 Ω allows <10 mV output deviation per 70 mA load step, critical for sensor excitation |
| Ultra-low leakage | 0.1 µA at 1 V reverse bias prevents error accumulation in high-Z feedback networks |
| Wide temperature range | –65°C to +200°C operation supports automotive under-hood and industrial control environments |
Applications
| Industrial Sensor Reference | Power Supply Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable excitation voltage for resistive temperature detectors (RTDs) in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Voltage reference diode establishing precise 5.6 V bias point for ratiometric measurement circuits. Use Value: ±5% tolerance and 7 Ω impedance ensure <0.5% total error contribution to RTD bridge output over temperature. | Use Scenario: Clamping transient surges on 5 V rail in legacy microcontroller-based motor drive boards. IC Role / Device Role / Timing Role: Shunt protection element diverting excess energy during line transients or ESD events. Use Value: 500 mW rating and DO-35 thermal mass allow safe absorption of 100 ns, 1 A spikes without degradation. |
| Low-Power Analog Front-End | Calibration Voltage Standard |
Use Scenario: Generating reference voltage for 10-bit ADCs in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Passive voltage reference source feeding ADC reference input and op-amp bias networks. Use Value: 0.1 µA leakage avoids loading high-impedance divider networks, preserving resolution down to 5 mV LSB. | Use Scenario: On-board calibration node in handheld multimeters requiring traceable 5.6 V standard. IC Role / Device Role / Timing Role: Primary voltage standard against which internal DAC outputs are trimmed during factory calibration. Use Value: Tight 5% tolerance and stable TC behavior enable ±0.1% calibration accuracy over 0–50°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 5.6 V nominal, but ±5% tolerance and 5 Ω ZZ; manufactured by ON Semiconductor in DO-41 | DO-41 package requires PCB footprint change; higher thermal mass supports 1 W derating | Select when higher power margin or alternate sourcing is required |
| BZX55-C5V6 | 5.6 V ±5%, 10 Ω ZZ, 100 nA IR @ 1 V; manufactured by Vishay in DO-35 | Lower leakage improves high-Z reference stability; identical DO-35 footprint | Select for ultra-low leakage-critical references where 10 Ω ZZ is acceptable |
Compared with 1N753A_T50R, 1N4734A offers higher power capability but requires layout revision, while BZX55-C5V6 matches the DO-35 form factor and improves leakage by 10× at the cost of slightly higher impedance.
Availability
1N753A_T50R is available at Aetrix Electronics and suitable for industrial sensor reference, power supply overvoltage clamp, and low-power analog front-end designs requiring stable component supply and long-term obsolescence management.
Supply support for 1N753A_T50R 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, signal conditioning, and discrete components before its acquisition by ON Semiconductor in 2016.
The 1N753A_T50R belongs to Fairchild's legacy 1N7xxA Zener diode family, designed for general-purpose voltage regulation and clamping in cost-sensitive, space-constrained through-hole applications.
FAQ
What is the nominal zener voltage of the 1N753A_T50R?
The 1N753A_T50R has a nominal zener voltage of 5.6 V, with a guaranteed range of 5.89 V (minimum) to 6.51 V (maximum) measured at 20 mA test current and 25°C ambient. This specification is confirmed in Fairchild's Rev. D1 datasheet for the 1N746A–1N759A series, and the "A" suffix denotes ±5% tolerance. The 1N753A_T50R maintains this voltage stability across its rated operating temperature range.
What package type does the 1N753A_T50R use?
The 1N753A_T50R uses a DO-35 glass axial package with a cathode identification band. This is explicitly stated in the "Absolute Maximum Ratings" section of the Fairchild datasheet, which specifies "DO-35 Glass case" and notes "COLOR BAND DENOTES CATHODE." The top-marking data confirms the device is marked with "LOGO / 53 / A", consistent with Fairchild's 1N7xxA DO-35 marking standard.
What is the maximum power dissipation for the 1N753A_T50R?
The 1N753A_T50R has a maximum power dissipation of 500 mW at lead temperature (TL) ≤ 75°C, with linear derating of 4.0 mW/°C above that temperature. This value is listed under "Absolute Maximum Ratings" in the Fairchild datasheet. Exceeding this limit risks thermal runaway or permanent degradation, especially given the device's 7 Ω dynamic impedance and 0.1 µA leakage profile.
Does the 1N753A_T50R have a specified forward voltage?
Yes-the 1N753A_T50R has a maximum forward voltage (VF) of 1.5 V at 200 mA forward current, as documented in the "Electrical Characteristics" table footnote. While primarily used in reverse breakdown, this VF rating ensures predictable turn-on behavior in dual-role protection circuits and aids in automated optical inspection (AOI) verification of cathode orientation during assembly.
How is the cathode identified on the 1N753A_T50R?
The cathode of the 1N753A_T50R is identified by a single color band on the glass body of the DO-35 package, as stated in the "Zeners" header of the Fairchild datasheet: "COLOR BAND DENOTES CATHODE." This marking convention is consistent across the 1N746A–1N759A series and verified in the top-marking diagram showing "LOGO / 53 / A" orientation relative to the band.
1N753A_T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N753A_T50R FAQ
1.How can I place an order for 1N753A_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N753A_T50R 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 1N753A_T50R reliable?
The price and inventory of 1N753A_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N753A_T50R is usually 5 days.
3.What payment methods are accepted for 1N753A_T50R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N753A_T50R transactions.
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4.How is shipping managed for 1N753A_T50R?
1N753A_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N753A_T50R 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 1N753A_T50R?
For technical support, including 1N753A_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N753A_T50R requirements.
6.How does Aetrix verify that 1N753A_T50R is sourced from the original manufacturer or authorized distributors?
All 1N753A_T50R 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 1N753A_T50R meets industry standards.
7.What is the process for return or replacement of 1N753A_T50R?
All 1N753A_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N753A_T50R, 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 1N753A_T50R part is unused and in its original packaging.
Return procedure for 1N753A_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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