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Microchip Technology 1N4750P/TR8
- Part No.:
- 1N4750P/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4750P/TR8.pdf
- Description:
- DIODE ZENER 27V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,691
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Product details
Overview
1N4750P/TR8 from Microsemi is a 27 V, 1 W axial-lead silicon Zener diode in DO-41 plastic package with ±5% voltage tolerance, 9.5 mA test current, and 35 Ω dynamic impedance at IZT. It regulates voltage across power supply rails, reference circuits, and overvoltage protection paths in industrial control and instrumentation systems.
For engineers reviewing the 1N4750P/TR8 datasheet, 1N4750P/TR8 pinout, 1N4750P/TR8 application, or 1N4750P/TR8 equivalent, key selection factors include Zener voltage accuracy, thermal resistance (45 °C/W junction-to-lead), surge current rating (750 mA), reverse leakage (<5 µA at 20.6 V), and RoHS-compliant "e3" plating option.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable DC voltage under varying load and temperature conditions. Its 27 V nominal Zener voltage exhibits a positive temperature coefficient above ~5 V, with typical TC of +5.5 mV/°C per Figure 3 in the datasheet.
The device delivers regulated output with 35 Ω dynamic impedance at 9.5 mA test current and supports steady-state dissipation of 1.0 W at lead temperature <105 °C (3/8″ from body) or ambient <45 °C on FR4 board. Forward voltage is ≤1.2 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27 V ±5% - precise regulation point for mid-range voltage references |
| Power Dissipation | 1.0 W at TL < 105 °C - defines maximum continuous thermal load on lead |
| Test Current (IZT) | 9.5 mA - operating point where VZ and ZZT are specified |
| Dynamic Impedance (ZZT) | 35 Ω at IZT - low AC impedance ensures minimal output voltage variation under ripple |
| Reverse Leakage (IR) | <5 µA at 20.6 V - guarantees low standby current in high-impedance bias networks |
| Surge Current (ISM) | 750 mA (½-sine, 1/120 s) - withstands transient overvoltage events without degradation |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design using standard lead-mounting practices |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode band marking; terminals are unidirectional anode/cathode leads for through-hole mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common or lower-potential node during regulation |
| Cathode | Zener breakdown terminal / voltage regulation output | Banded end; connected to higher-potential rail to clamp voltage at 27 V |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC 1N47xxAP registration | Industry-standard footprint and electrical behavior for drop-in replacement in legacy designs |
| Moisture Sensitivity Level 1 | No dry pack required - simplifies handling and eliminates bake-out before assembly |
| RoHS-compliant "e3" plating | Matte-tin termination compatible with Pb-free soldering processes per MIL-STD-750 |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - robust handling in non-ESD-controlled environments |
| Plastic encapsulation (P suffix) | Lower thermal resistance vs. glass-body (G) variants - improves power derating margin |
Applications
| Power Supply Voltage Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Stabilizing feedback node in linear regulator or op-amp reference circuit. IC Role / Device Role / Timing Role: Provides precise 27 V reference voltage independent of input variation. Use Value: Enables ±5% output regulation accuracy with low dynamic impedance (35 Ω) minimizing ripple coupling. | Use Scenario: Protecting microcontroller I/O pins from transient surges exceeding 27 V. IC Role / Device Role / Timing Role: Shunts excess energy to ground when voltage exceeds 27 V breakdown threshold. Use Value: Absorbs 750 mA surge current (1/120 s) without failure, preserving downstream logic integrity. |
| Industrial Sensor Biasing | Automotive Control Module Reference |
Use Scenario: Supplying stable excitation voltage to resistive bridge sensors in PLC analog inputs. IC Role / Device Role / Timing Role: Delivers low-drift 27 V bias under wide temperature range (–65 °C to +150 °C). Use Value: Maintains sensor linearity via tight 5% VZ tolerance and low TC drift above 5 V. | Use Scenario: Generating internal reference for engine control unit (ECU) ADC subsystems. IC Role / Device Role / Timing Role: Serves as rugged, qualified voltage reference in harsh automotive environments. Use Value: Qualified to MIL-PRF-19500 screening levels (with prefix) and rated for –65 °C to +150 °C operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A | No "P" suffix - glass-body DO-35 package; higher thermal resistance (65 °C/W) | Less suitable for high-power-density layouts due to inferior heat transfer | Select 1N4750P/TR8 when plastic DO-41 mechanical robustness and lower RθJL are required |
| MMBZ5260BS-7-F | SOT-23 surface-mount; 27 V, 225 mW; 5% tolerance; 30 Ω ZZT at 3.5 mA | Designed for space-constrained PCBs; not interchangeable without layout change | Choose MMBZ5260BS-7-F only for new SMT designs requiring footprint reduction |
Compared with 1N4750A and MMBZ5260BS-7-F, the 1N4750P/TR8 offers superior thermal performance in through-hole applications and JEDEC-standardized reliability for legacy industrial systems, while the alternatives trade package form factor or power rating for different integration needs.
Availability
1N4750P/TR8 is available at Aetrix Electronics and suitable for industrial control systems, analog sensor interfaces, and automotive ECU reference circuits requiring stable component supply and long-term obsolescence management.
Supply support for 1N4750P/TR8 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
Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed to deliver JEDEC-standardized, high-stability Zener regulation in plastic packages for cost-sensitive yet mission-critical power and reference applications.
FAQ
What is the Zener voltage tolerance for 1N4750P/TR8?
The 1N4750P/TR8 has a nominal Zener voltage of 27 V with ±5% tolerance, as indicated by the "A" suffix in the part number per Microsemi's documentation. This tolerance applies at 25 °C lead temperature with 9.5 mA test current, and is verified per JEDEC 1N47xxA specifications. The 1N4750P/TR8 does not support tighter tolerances like ±1% or ±2% unless explicitly ordered with "C" or "D" suffixes.
Does 1N4750P/TR8 support RoHS compliance?
Yes, the 1N4750P/TR8 is RoHS compliant when ordered with the "e3" suffix (e.g., 1N4750P-e3/TR8), indicating annealed matte-tin plating per MIL-STD-750. The base part number 1N4750P/TR8 may ship with traditional Sn/Pb plating unless otherwise specified; Aetrix Electronics provides both versions with full material declarations upon request.
What is the maximum surge current rating for 1N4750P/TR8?
The 1N4750P/TR8 is rated for a maximum surge current (ISM) of 750 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating reflects its capability to absorb transient overvoltage events without parametric shift or failure, making it suitable for clamping in power supply and interface protection circuits.
How does the thermal resistance of 1N4750P/TR8 compare to glass-body variants?
The 1N4750P/TR8 features a plastic DO-41 package with 45 °C/W junction-to-lead thermal resistance, significantly lower than the 65 °C/W of the glass-body 1N4750A (DO-35). This 31% improvement allows higher continuous power dissipation at the same lead temperature, supporting more compact heatsinking or higher ambient operation in industrial enclosures.
Can 1N4750P/TR8 be used in automotive applications?
Yes, the 1N4750P/TR8 operates across –65 °C to +150 °C and meets MIL-STD-750 ESD requirements, making it suitable for under-hood automotive modules. When ordered with screening prefixes (e.g., MV1N4750P/TR8), it complies with MIL-PRF-19500 JANTXV standards for enhanced reliability. Aetrix Electronics supports automotive qualification documentation and lot traceability for 1N4750P/TR8.
1N4750P/TR8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±10%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 20.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
1N4750P/TR8 FAQ
1.How can I place an order for 1N4750P/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4750P/TR8 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 1N4750P/TR8 reliable?
The price and inventory of 1N4750P/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4750P/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4750P/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4750P/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4750P/TR8?
1N4750P/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4750P/TR8 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 1N4750P/TR8?
For technical support, including 1N4750P/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4750P/TR8 requirements.
6.How does Aetrix verify that 1N4750P/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4750P/TR8 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 1N4750P/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4750P/TR8?
All 1N4750P/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4750P/TR8, 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 1N4750P/TR8 part is unused and in its original packaging.
Return procedure for 1N4750P/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4750P/TR8 Tags
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Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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