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Taiwan Semiconductor Corporation 1N4750A A0G
- Part No.:
- 1N4750A A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750A A0G.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,426
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Product details
Overview
1N4750A A0G from Taiwan Semiconductor is a 1 W, 27 V nominal Zener diode in DO-41 package, with ±5% voltage tolerance, 9.5 Ω dynamic impedance at 35 mA test current, and maximum leakage current of 5 μA at 20.6 V reverse bias. It serves as a precision voltage reference and overvoltage clamp in power supply regulation and ESD protection circuits.
For engineers reviewing the 1N4750A A0G datasheet, 1N4750A A0G pinout, 1N4750A A0G application, or 1N4750A A0G equivalent, key selection criteria include zener voltage accuracy, thermal stability up to +150°C junction temperature, low-inductance DO-41 package suitability for PCB-level transient suppression, and compliance with RoHS and halogen-free standards.
Technical Context
This discrete Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and line conditions. Its glass-passivated junction ensures long-term reliability and low leakage, while built-in strain relief and pure tin-plated leads support robust soldering and mechanical durability.
The device exhibits a positive temperature coefficient above ~6 V, with typical TC of +5.5 mV/°C at 27 V, enabling predictable drift compensation in temperature-sensitive references. Surge capability reaches 170 A (non-repetitive, 1/120 s), validated per JEDEC standards using 100% production testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.65–28.35 V at IZT = 35 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (Ptot) | 1 W at TA = 50°C - sets maximum continuous DC power handling before thermal derating begins |
| Zener Impedance (ZZT) | 9.5 Ω at IZT = 35 mA - determines AC regulation stiffness and ripple rejection in feedback paths |
| Leakage Current (IR) | <5 μA at VR = 20.6 V - ensures minimal standby current draw in high-impedance bias networks |
| Junction Temperature Range | −55°C to +150°C - supports operation in automotive under-hood and industrial control environments |
| Package | DO-204AL (DO-41) - industry-standard axial leaded package with UL 94V-0 molding compound and JESD 201 Class 2 whisker resistance |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, glass-passivated silicon diode with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002; weight ≈ 0.300 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side reference node | Connected to ground or lower-potential rail in shunt regulator configuration |
| Cathode | Reverse-biased Zener terminal / regulated output node | Provides stable 27 V reference when biased above breakdown; marked by black band |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term VZ drift <0.1%/1000 h and IR stability under humidity stress |
| Built-in strain relief | Prevents lead fracture during board flexure or thermal cycling in high-vibration environments |
| Low inductance construction | Supports effective high-frequency transient clamping (e.g., ESD pulses >100 MHz) |
| AEC-Q101 qualification option | H-suffix variants available for automotive-grade reliability validation (not applicable to A0G variant) |
| Halogen-free per IEC 61249-2-21 | Meets environmental compliance requirements for industrial and consumer electronics manufacturing |
Applications
| Switch-Mode Power Supply Feedback | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Provides precise 27 V reference for optocoupler-based feedback loop in 48 V input DC-DC converters. IC Role / Device Role / Timing Role: Shunt voltage reference regulating error amplifier input to maintain ±1% output voltage accuracy. Use Value: Low ZZT (9.5 Ω) minimizes loop gain variation across line/load transients, improving dynamic response. |
Use Scenario: Generates clean reset signal for ARM Cortex-M4 microcontrollers during brown-out events. IC Role / Device Role / Timing Role: Clamps reset line to 27 V threshold until supply stabilizes above 20.6 V. Use Value: Sub-5 μA leakage prevents false triggering in high-impedance RC timing networks. |
| Industrial Sensor Signal Conditioning | Automotive LED Driver Overvoltage Protection |
Use Scenario: Stabilizes excitation voltage for 4–20 mA current-loop pressure transmitters operating at 24 V rail. IC Role / Device Role / Timing Role: Zener shunt regulator maintaining constant 27 V bias for bridge sensor amplification stage. Use Value: ±5% VZ tolerance and +5.5 mV/°C TC enable calibrated offset compensation over −40°C to +85°C. |
Use Scenario: Protects constant-current LED driver ICs from load-dump transients in 24 V truck lighting systems. IC Role / Device Role / Timing Role: Fast-clamping element diverting surge energy above 28.35 V to ground. Use Value: 170 A non-repetitive surge rating handles ISO 7637-2 Pulse 5a without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A-T | Same electrical specs; tape-and-reel packaging (5,000 pcs) vs. ammo box (3,000 pcs); identical DO-41 package | No functional difference; optimized for automated SMT placement rather than manual/hand-soldered prototyping | Select 1N4750A-T for high-volume production lines requiring pick-and-place compatibility |
| BZX85C27 | 27 V Zener, 1.3 W rating, higher ZZT (15 Ω), wider VZ tolerance (±10%), different DO-41 mechanical dimensions (longer body) | Lower regulation precision and thermal stability; unsuitable where <±5% accuracy or low-TC operation is required | Choose BZX85C27 only if cost sensitivity outweighs voltage accuracy and surge performance requirements |
Compared with 1N4750A A0G, the 1N4750A-T offers identical electrical behavior with logistics optimization for volume assembly, while BZX85C27 trades regulation precision and surge margin for broader availability and lower unit cost in non-critical applications.
Availability
1N4750A A0G is available at Aetrix Electronics and suitable for switch-mode power supplies, microcontroller reset circuits, industrial sensor conditioning, and automotive LED driver overvoltage protection requiring stable component supply and full traceability.
Supply support for 1N4750A A0G 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, automotive, and consumer markets since 1979.
The 1N47xxA series was developed to deliver high-reliability, low-drift Zener references for power management and protection in harsh-environment applications, emphasizing process-controlled VZ uniformity and long-term parametric stability.
FAQ
What is the exact Zener voltage range for 1N4750A A0G at 35 mA test current?
The 1N4750A A0G has a guaranteed Zener voltage range of 25.65 V to 28.35 V when measured at IZT = 35 mA and lead temperature maintained at 30°C ±1°C. This ±5% tolerance is specified per JEDEC registration and applies to all units shipped under this part number.
Does 1N4750A A0G meet automotive qualification standards?
The 1N4750A A0G variant is not AEC-Q101 qualified. However, Taiwan Semiconductor offers the 1N4750AH and 1N4750AHA0G versions with full AEC-Q101 certification for automotive applications. The A0G suffix denotes ammo box packaging only-not reliability grade.
What is the maximum non-repetitive surge current rating for 1N4750A A0G?
The 1N4750A A0G is rated for 170 A peak non-repetitive reverse surge current, defined as a 1/120 second duration half-sine or equivalent pulse superimposed on the 35 mA test current, per JEDEC standards. Actual capability may exceed this value as shown in Figure 11 of the datasheet.
Can 1N4750A A0G be used in surface-mount designs?
No-1N4750A A0G uses the axial DO-41 (DO-204AL) package and is not compatible with surface-mount assembly. For SMD equivalents, consider Taiwan Semiconductor's TZM series or ON Semiconductor's MMBZ52xxLT1G family, which offer comparable 27 V Zener performance in SOT-23 packages.
What is the thermal resistance from junction to lead for 1N4750A A0G?
The junction-to-lead thermal resistance (θJL) for 1N4750A A0G is approximately 100°C/W when mounted with 0.25-inch lead length to a heat sink, as shown in Figure 10 of the datasheet. Derating follows 6.67 mW/°C above 50°C ambient when mounted on a 5 mm × 5 mm copper pad.
1N4750A A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 20.6 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4750A A0G FAQ
1.How can I place an order for 1N4750A A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750A A0G 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 1N4750A A0G reliable?
The price and inventory of 1N4750A A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750A A0G is usually 5 days.
3.What payment methods are accepted for 1N4750A A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750A A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750A A0G?
1N4750A A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750A A0G 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 1N4750A A0G?
For technical support, including 1N4750A A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750A A0G requirements.
6.How does Aetrix verify that 1N4750A A0G is sourced from the original manufacturer or authorized distributors?
All 1N4750A A0G 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 1N4750A A0G meets industry standards.
7.What is the process for return or replacement of 1N4750A A0G?
All 1N4750A A0G units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750A A0G, 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 1N4750A A0G part is unused and in its original packaging.
Return procedure for 1N4750A A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750A A0G Tags
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