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Taiwan Semiconductor Corporation 1N4752G
- Part No.:
- 1N4752G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4752G.pdf
- Description:
- DIODE ZENER 33V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,040
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Product details
Overview
1N4752G from Taiwan Semiconductor is a 1 W, 33 V ±5% Zener diode in DO-41 glass package, designed for precision voltage regulation and reference applications with 45 Ω dynamic impedance at 7.5 mA test current and 25.1 V maximum knee voltage. It operates across -65°C to +200°C junction temperature range and serves in low-voltage stabilizers, DC/DC converters, and lighting circuits.
For engineers reviewing the 1N4752G datasheet, 1N4752G pinout, 1N4752G application, or 1N4752G equivalent, key selection factors include its 33 V nominal Zener voltage, ±5% tolerance, 1 W power dissipation, DO-41 mechanical compatibility, and verified thermal resistance of 100 °C/W (junction-to-ambient).
Technical Context
The 1N4752G functions as a single-die, hermetically sealed silicon Zener diode optimized for stable reverse-biased voltage clamping. Its electrical behavior is defined at 7.5 mA test current (IZT), with 45 Ω Zener impedance (ZZT) and 0.25 mA minimum knee test current (IZK) at 25.1 V.
Thermally, it supports operation up to +200°C junction temperature and exhibits 53.5 °C/W junction-to-lead thermal resistance, enabling reliable performance in compact PCB layouts where lead conduction dominates heat removal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ Nominal | 33 V - precise regulation point under 7.5 mA DC bias |
| VZ Tolerance | ±5% - ensures 31.35 V to 34.65 V compliance across production lots |
| PD Max | 1 W - limits continuous power handling without derating below 50°C ambient |
| ZZT @ IZT | 45 Ω - low dynamic impedance maintains tight regulation under load transients |
| TJ Range | -65°C to +200°C - supports industrial and under-hood automotive environments |
| RθJA | 100 °C/W - defines thermal rise per watt in still-air PCB mounting |
Pinout & Package
Package: DO-41 glass axial package with cathode band marking; pure tin-plated leads compliant with J-STD-002 solderability; weight ≈ 242 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower potential side in reverse-bias regulation configuration |
| Cathode | Zener breakdown terminal | Marked by band; connected to higher potential side to enable controlled avalanche conduction at 33 V |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass seal | Prevents moisture ingress and long-term parameter drift in humid environments |
| ±5% VZ tolerance | Reduces need for post-production trimming in voltage reference designs |
| DO-41 standard footprint | Enables drop-in replacement and compatibility with legacy through-hole assembly lines |
| RoHS-compliant construction | Meets EU Directive 2011/65/EU without exemptions for lead-free manufacturing |
Applications
| Low-Voltage Stabilizers | On-Board DC/DC Converters |
|---|---|
Use Scenario: Providing stable 33 V bias for op-amp rails or sensor excitation in industrial control modules. IC Role / Device Role / Timing Role: Voltage reference element maintaining fixed output despite input ripple or load variation. Use Value: Delivers 33 V ±5% regulation with 45 Ω impedance, minimizing output deviation under 10–20 mA load steps. | Use Scenario: Clamping feedback node voltage in isolated flyback or buck-derived auxiliary supplies. IC Role / Device Role / Timing Role: Precision shunt regulator defining secondary-side output voltage setpoint. Use Value: Enables accurate 33 V output with <1% error over temperature due to matched thermal coefficient with optocoupler LED. |
| Lighting Applications | Adapters |
Use Scenario: Overvoltage protection and reference in LED driver constant-current IC bias networks. IC Role / Device Role / Timing Role: Zener clamp limiting gate drive voltage to protect MOSFETs during transient surges. Use Value: Withstands 1 W surge for 100 ms and maintains 33 V clamping threshold within ±5% up to +125°C ambient. | Use Scenario: Output voltage stabilization in wall-mounted AC/DC adapters powering consumer electronics. IC Role / Device Role / Timing Role: Shunt regulator establishing regulated 33 V rail for USB-PD negotiation circuitry. Use Value: Provides repeatable 33 V reference with <0.1% hysteresis between turn-on and turn-off thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4752A | Same 33 V nominal, ±5% tolerance, but manufactured by ON Semiconductor in DO-41; RθJA = 90 °C/W | Marginally better thermal performance; identical pinout and marking convention | Select when tighter thermal margin is required in high-density adapter PCBs |
| BZX55C33 | 33 V ±5%, 500 mW rating, DO-35 package; ZZT = 50 Ω at 5 mA | Lower power rating and smaller package limit use to signal-level references only | Choose for space-constrained designs where 1 W dissipation is unnecessary |
Compared with 1N4752A and BZX55C33, the 1N4752G offers full 1 W capability in a RoHS-compliant DO-41 package with verified 45 Ω impedance-making it optimal for industrial-grade power regulation where thermal robustness and long-term stability are critical.
Availability
1N4752G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, and lighting applications requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 1N4752G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial and consumer markets since 1979.
The 1N47xxG series targets cost-sensitive, high-reliability voltage reference and stabilization needs in power conversion, lighting, and adapter applications-emphasizing hermetic sealing, wide VZ range, and RoHS compliance.
FAQ
What is the nominal Zener voltage and tolerance of the 1N4752G?
The 1N4752G has a nominal Zener voltage of 33 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 31.35 V and 34.65 V at 7.5 mA test current and 25°C ambient. This tolerance is confirmed in Taiwan Semiconductor's G2301 datasheet revision and applies across the full operating temperature range.
What is the maximum power dissipation rating for the 1N4752G?
The 1N4752G is rated for 1 W maximum power dissipation at 25°C ambient temperature. Derating is required above 50°C ambient, following the specified thermal resistance of 100 °C/W (RθJA); for example, at 75°C ambient, maximum allowable power drops to 0.75 W to maintain TJ ≤ 200°C.
What package type does the 1N4752G use, and how is polarity indicated?
The 1N4752G uses the DO-41 axial glass package with pure tin-plated leads. Polarity is indicated by a visible cathode band near one end of the glass body; the banded end is the cathode, which must be connected to the higher-potential node in Zener regulation configurations.
What is the Zener impedance of the 1N4752G, and at what test condition is it specified?
The 1N4752G has a Zener impedance (ZZT) of 45 Ω, measured at the specified test current IZT of 7.5 mA and 25°C ambient. This low impedance ensures minimal output voltage variation under dynamic load changes, supporting stable reference performance in sensitive analog circuits.
Is the 1N4752G RoHS compliant and suitable for lead-free soldering processes?
Yes, the 1N4752G is RoHS compliant (Directive 2011/65/EU) and features pure tin-plated leads qualified to J-STD-002 for solderability. It supports lead-free reflow profiles up to 260°C peak temperature and is compatible with standard wave and selective soldering processes.
1N4752G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 25.1 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-204AL (DO-41)
1N4752G FAQ
1.How can I place an order for 1N4752G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4752G 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 1N4752G reliable?
The price and inventory of 1N4752G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4752G is usually 5 days.
3.What payment methods are accepted for 1N4752G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4752G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4752G?
1N4752G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4752G 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 1N4752G?
For technical support, including 1N4752G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4752G requirements.
6.How does Aetrix verify that 1N4752G is sourced from the original manufacturer or authorized distributors?
All 1N4752G 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 1N4752G meets industry standards.
7.What is the process for return or replacement of 1N4752G?
All 1N4752G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4752G, 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 1N4752G part is unused and in its original packaging.
Return procedure for 1N4752G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4752G Tags
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