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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

onsemi 1N753A_T50A

Name: 1N753A_T50A
Brand: onsemi
SKU: 1N753A_T50A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N753A_T50A

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: 1N753A_T50A.pdf

Description:: DIODE ZENER 6.2V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Inventory:5,130

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Product details

Overview

1N753A_T50A from Fairchild Semiconductor is a 6.2 V, ±5% tolerance, 500 mW glass-passivated Zener diode in DO-35 package, 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_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, power derating above 75°C, thermal resistance, cathode band identification, and compatibility with through-hole PCB layouts requiring stable 6.2 V references.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain a stable 6.2 V across its terminals when biased above IZM (60 mA). Its DO-35 glass package ensures hermetic sealing and low parasitic capacitance.

The 1N753A_T50A follows the legacy 1N7xxA series specification, with absolute maximum ratings defined at TL ≤ 75°C and thermal derating of 4.0 mW/°C above that temperature, supporting operation from –65°C to +200°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z @ I_Z = 20 mA	6.2 V nominal, ±5% tolerance - defines precise regulation point for feedback or reference use
Z_Z @ I_Z = 20 mA	7 Ω - low dynamic impedance ensures minimal output voltage variation under load changes
I_ZM Max	60 mA - maximum DC zener current before exceeding 500 mW power limit at T_L ≤ 75°C
I_R @ V_R = 1 V	0.1 µA - ultra-low reverse leakage preserves accuracy in high-impedance bias networks
P_D @ T_L ≤ 75°C	500 mW - sets usable power envelope for continuous regulation without heatsinking
Package	DO-35 glass axial - enables manual soldering, visual cathode band identification, and reliable hermetic sealing
Operating Temp	–65°C to +200°C - supports industrial, automotive under-hood, and military-grade environments

Pinout & Package

DO-35 glass axial package with cathode identified by a single black band on the body. Leads are tinned copper alloy, 3/8″ length standard for thermal testing per JEDEC.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Reference ground node	Connected to circuit common when used in shunt regulation; must sink current from series resistor
Cathode	Reverse-biased breakdown terminal / Output reference node	Delivers regulated 6.2 V relative to anode; marked by black band for polarity assurance

Key Features

Feature	Design Value
±5% V_Z tolerance	Enables direct replacement in legacy 6.2 V reference designs without recalibration or trimming
DO-35 glass construction	Provides hermeticity and long-term stability in humid or corrosive environments
Low 7 Ω Z_Z	Minimizes line and load regulation error in precision analog supply rails
0.1 µA I_R at 1 V	Reduces error contribution in high-resistance divider networks and sensor biasing
500 mW power rating	Supports standalone regulation in low-current applications without external pass devices

Applications

Industrial Sensor Signal Conditioning	Legacy Microcontroller Power Monitoring
Use Scenario: Stabilizing excitation voltage for RTD or strain gauge bridges in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 6.2 V bias to bridge circuitry. Use Value: Maintains measurement accuracy over temperature due to low Z_Z and wide operating range.	Use Scenario: Monitoring 5 V rail integrity via resistive divider into microcontroller ADC, where reference stability affects fault detection threshold. IC Role / Device Role / Timing Role: Precision reference node for voltage-sense divider scaling. Use Value: ±5% V_Z tolerance ensures consistent trip-point calibration across production batches.
Automotive Body Control Module References	Test Equipment Calibration Sources
Use Scenario: Generating stable reference for window lift motor current sensing or HVAC actuator position feedback. IC Role / Device Role / Timing Role: Low-drift voltage clamp in analog front-end signal chains exposed to under-dash thermal cycling. Use Value: –65°C to +200°C rating allows placement near heat sources without derating concerns.	Use Scenario: Serving as traceable 6.2 V source in handheld multimeter internal calibration paths. IC Role / Device Role / Timing Role: Primary shunt reference in self-test and auto-zero subcircuits. Use Value: Glass DO-35 package ensures long-term parameter stability required for metrology-grade instruments.

Industrial Sensor Signal Conditioning

Legacy Microcontroller Power Monitoring

Use Scenario: Stabilizing excitation voltage for RTD or strain gauge bridges in PLC analog input modules.

IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 6.2 V bias to bridge circuitry.

Use Value: Maintains measurement accuracy over temperature due to low Z_Z and wide operating range.

Use Scenario: Monitoring 5 V rail integrity via resistive divider into microcontroller ADC, where reference stability affects fault detection threshold.

IC Role / Device Role / Timing Role: Precision reference node for voltage-sense divider scaling.

Use Value: ±5% V_Z tolerance ensures consistent trip-point calibration across production batches.

Automotive Body Control Module References

Test Equipment Calibration Sources

Use Scenario: Generating stable reference for window lift motor current sensing or HVAC actuator position feedback.

IC Role / Device Role / Timing Role: Low-drift voltage clamp in analog front-end signal chains exposed to under-dash thermal cycling.

Use Value: –65°C to +200°C rating allows placement near heat sources without derating concerns.

Use Scenario: Serving as traceable 6.2 V source in handheld multimeter internal calibration paths.

IC Role / Device Role / Timing Role: Primary shunt reference in self-test and auto-zero subcircuits.

Use Value: Glass DO-35 package ensures long-term parameter stability required for metrology-grade instruments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4735A	6.2 V, ±5%, 1.0 W rating, DO-41 package, 5 Ω Z_Z	Higher power handling but larger footprint; requires different PCB layout	Select when >500 mW dissipation or improved thermal margin is needed
BZX55C6V2	6.2 V, ±5%, 500 mW, DO-35, 10 Ω Z_Z, higher I_R (1 µA @ 1 V)	Same package but looser leakage spec; less suitable for high-Z bias networks	Select when cost sensitivity outweighs ultra-low leakage requirement

Compared with 1N753A_T50A, the 1N4735A offers higher power capability in a larger DO-41 case, while the BZX55C6V2 matches the DO-35 form factor but trades off leakage performance for broader availability - both require validation of thermal and noise behavior in the target circuit.

Availability

1N753A_T50A is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive body control modules, and test equipment calibration requiring stable component supply and long-lifecycle support.

Supply support for 1N753A_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

Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.

The 1N753A_T50A belongs to Fairchild's legacy 1N7xxA Zener diode family, designed for general-purpose voltage regulation and reference applications in cost-sensitive, high-reliability through-hole systems.

FAQ

What is the exact zener voltage tolerance for 1N753A_T50A?

The 1N753A_T50A has a nominal zener voltage of 6.2 V with a guaranteed tolerance of ±5% at 20 mA test current, meaning the actual V_Z falls between 5.89 V and 6.51 V under specified conditions. This tolerance is measured at 25°C with thermal equilibrium at lead temperature of 30°C ±1°C and 3/8″ lead length, per Fairchild Rev. D1 datasheet.

Does 1N753A_T50A support surface-mount assembly?

No, the 1N753A_T50A is packaged exclusively in the DO-35 glass axial leaded format and is not compatible with SMT reflow or pick-and-place processes. It requires through-hole mounting and wave or hand soldering. For SMT alternatives, consider the BZX55C6V2 in DO-35 variant or MELF packages like LL4148 variants with similar V_Z.

What is the maximum allowable junction temperature for 1N753A_T50A?

The 1N753A_T50A does not specify a separate junction temperature limit; instead, its Absolute Maximum Ratings define operating and storage temperature range as –65°C to +200°C. Power dissipation must be derated linearly at 4.0 mW/°C above 75°C lead temperature, ensuring safe operation within this full range when thermal design accounts for package-to-ambient resistance.

How is cathode polarity identified on 1N753A_T50A?

The cathode of the 1N753A_T50A is marked by a single black band on the glass body of the DO-35 package. Per Fairchild marking standards, this band aligns with the third line of top-marking ("A") and corresponds to the cathode terminal. When installed, the banded end connects to the higher-potential side in shunt regulator configurations.

Can 1N753A_T50A replace 1N753A without modification?

Yes, the suffix "_T50A" denotes tape-and-reel packaging per Fairchild's internal ordering convention and does not alter electrical or mechanical specifications. The 1N753A_T50A shares identical V_Z, Z_Z, I_ZM, package, and marking with the base 1N753A, making it a direct functional and physical replacement in all applications.

1N753A_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):: 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_T50A FAQ

1.How can I place an order for 1N753A_T50A through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N753A_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 1N753A_T50A reliable?

The price and inventory of 1N753A_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N753A_T50A is usually 5 days.

3.What payment methods are accepted for 1N753A_T50A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N753A_T50A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N753A_T50A?

1N753A_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N753A_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 1N753A_T50A?

For technical support, including 1N753A_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N753A_T50A requirements.

6.How does Aetrix verify that 1N753A_T50A is sourced from the original manufacturer or authorized distributors?

All 1N753A_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 1N753A_T50A meets industry standards.

7.What is the process for return or replacement of 1N753A_T50A?

All 1N753A_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N753A_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 1N753A_T50A part is unused and in its original packaging.

Return procedure for 1N753A_T50A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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