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Diodes Incorporated 1N4753A-T
- Part No.:
- 1N4753A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4753A-T.pdf
- Description:
- DIODE ZENER 36V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:9,765
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Product details
Overview
1N4753A-T from Diodes Incorporated is a 1.0 W, 36 V nominal Zener diode in DO-41 glass package with ±5% voltage tolerance, 50 Ω maximum Zener impedance at 7.0 mA test current, and 27.4 V minimum surge voltage for 8.3 ms, used for precision voltage regulation in power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N4753A-T datasheet, 1N4753A-T pinout, 1N4753A-T application, or 1N4753A-T equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (175 °C/W), surge current rating (125 A), reverse leakage (<5 µA at 27.4 V), and DO-41 mechanical compatibility in legacy linear regulator designs.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 36 V nominal Zener voltage is specified at 7.0 mA test current (IZT), with a temperature coefficient of +0.06 to +0.095 %/°C indicating positive drift above 25 °C.
The device exhibits 50 Ω dynamic impedance (ZZT) at IZT and 1000 Ω at knee current (IZK = 0.25 mA), confirming sharp breakdown characteristics suitable for voltage-clamping and shunt regulation. Thermal derating begins at 50 °C, with 6.67 mW/°C reduction beyond that point when leads are held at 50 °C with 9.5 mm length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V nominal at 7.0 mA - defines regulated output voltage in shunt regulator topologies |
| Power Dissipation | 1.0 W at 25 °C - sets maximum continuous power handling before thermal derating |
| Zener Impedance | 50 Ω max at IZT - determines regulation stiffness and AC ripple rejection |
| Reverse Leakage | <5 µA at 27.4 V - ensures low standby current in high-impedance bias networks |
| Surge Current | 125 A for 8.3 ms - supports transient overvoltage clamping per IEC 61000-4-5 |
| Thermal Resistance | 175 °C/W junction-to-ambient - requires heatsinking or lead-length control for >50 °C ambient |
| Temperature Coefficient | +0.06 to +0.095 %/°C - quantifies voltage drift magnitude and sign across operating range |
Pinout & Package
DO-41 glass axial package with cathode band marking; two-terminal device with no internal pin numbering-cathode identified by painted band, anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in shunt regulation; establishes reference ground for feedback divider |
| Cathode | Reverse breakdown terminal / Zener voltage output node | Provides stable 36 V reference relative to anode; carries full load current in shunt configuration |
Key Features
| Feature | Design Value |
|---|---|
| 1.0 W Power Rating | Enables use in medium-power linear regulator feedback paths without external series resistor derating |
| ±5% Zener Tolerance | Supports cost-sensitive applications where tighter tolerance is not required for system-level accuracy |
| DO-41 Glass Package | Provides UL 94V-0 flammability rating and reliable hermetic sealing for industrial environments |
| RoHS-Compliant Finish | Sn96.5Ag3.5 termination meets lead-free soldering requirements per MIL-STD-202, Method 208 |
| Sharp Breakdown Knee | Verified by dual-point Zener impedance testing (IZT and IZK) to reject unstable units |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Provides precise 36 V reference for optocoupler-based feedback in offline AC/DC converters. IC Role / Device Role / Timing Role: Shunt voltage reference regulating TL431-equivalent loop error signal. Use Value: Maintains ±1% output regulation despite line/load transients due to low ZZT and stable TC. | Use Scenario: Supplies stable excitation voltage to 4–20 mA current-loop pressure transducers. IC Role / Device Role / Timing Role: Precision voltage source for ratiometric sensor bridge biasing. Use Value: Enables <0.1% full-scale error over –40 to +85 °C via predictable +0.075 %/°C drift. |
| Overvoltage Clamp Protection | Legacy Linear Regulator Reference |
Use Scenario: Clamps 48 V telecom input surges to protect downstream DC/DC controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 8.3 ms lightning-induced spikes. Use Value: Withstands 125 A surge current while limiting clamped voltage to ≤42 V. | Use Scenario: Sets output voltage in LM317-based adjustable regulators via resistive divider. IC Role / Device Role / Timing Role: Fixed reference replacing adjustable potentiometer for production consistency. Use Value: Eliminates trimmer drift and improves long-term stability with ±5% initial tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DFLZ36-7-F | Surface-mount SOD-123FL package; 36 V, 500 mW; 30 Ω ZZT at 5 mA | Designed for automated PCB assembly; lower power rating limits use in >500 mW shunt loads | Select for new designs requiring RoHS-compliant SMT layout and reduced board space |
| 1N4753A-A | Identical electrical specs; DO-41 in 5 k-piece ammo pack instead of tape-and-reel | No functional difference; packaging optimized for manual/hand-solder prototyping | Choose for low-volume evaluation or repair where reel feeding is unnecessary |
Compared with DFLZ36-7-F and 1N4753A-A, the 1N4753A-T offers identical Zener performance in tape-and-reel format for high-volume through-hole manufacturing, balancing legacy compatibility with automated placement efficiency.
Availability
1N4753A-T is available at Aetrix Electronics and suitable for switch-mode power supply feedback, industrial sensor reference, and overvoltage clamp protection requiring stable component supply across extended production lifecycles.
Supply support for 1N4753A-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The 1N47xxA series belongs to Diodes' standard Zener diode product line, engineered for general-purpose voltage regulation and reference applications where cost, reliability, and broad voltage coverage are prioritized over ultra-low noise or tight tolerance.
FAQ
What is the maximum allowable ambient temperature for continuous 1.0 W operation?
The 1N4753A-T sustains full 1.0 W dissipation only up to 50 °C ambient. Above this, power must be linearly derated at 6.67 mW/°C, reaching zero watt capability at 200 °C ambient-assuming leads are maintained at 50 °C with 9.5 mm length from case per Note 1.
How does the +0.06 to +0.095 %/°C temperature coefficient affect circuit design?
This positive coefficient means the Zener voltage increases with temperature: at 100 °C, VZ rises by ~4.2–6.6 V above its 25 °C value. Designers must account for this drift in precision references-e.g., by using complementary TC components or calibrating at operating temperature.
Is the 1N4753A-T suitable for surge protection per IEC 61000-4-5?
Yes-the 125 A 8.3 ms surge rating aligns with Level 4 (4 kV) combination wave testing. However, it must be paired with appropriate series impedance (e.g., 10 Ω resistor) to limit peak current and avoid thermal runaway during repeated surges.
Why is the 1N4753A-T marked "Not Recommended for New Design"?
Diodes Incorporated recommends DFLZxx devices for new designs due to superior SMT manufacturability, smaller footprint, and improved thermal performance. The 1N4753A-T remains fully supported for legacy through-hole systems but lacks modern packaging and efficiency enhancements.
1N4753A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 50 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 27.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
1N4753A-T FAQ
1.How can I place an order for 1N4753A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4753A-T 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 1N4753A-T reliable?
The price and inventory of 1N4753A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4753A-T is usually 5 days.
3.What payment methods are accepted for 1N4753A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4753A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4753A-T?
1N4753A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4753A-T 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 1N4753A-T?
For technical support, including 1N4753A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4753A-T requirements.
6.How does Aetrix verify that 1N4753A-T is sourced from the original manufacturer or authorized distributors?
All 1N4753A-T 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 1N4753A-T meets industry standards.
7.What is the process for return or replacement of 1N4753A-T?
All 1N4753A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1N4753A-T, 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 1N4753A-T part is unused and in its original packaging.
Return procedure for 1N4753A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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