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Microchip Technology 1N4754CPE3/TR8
- Part No.:
- 1N4754CPE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4754CPE3/TR8.pdf
- Description:
- DIODE ZENER 39V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,066
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Product details
Overview
1N4754CPE3/TR8 from Microsemi is a 39 V, ±2% tolerance, 1 W axial-lead silicon Zener diode in DO-41 plastic package, rated for 6.5 mA test current, 23 Ω dynamic impedance at IZT, and 1000 mA maximum regulator current at TA = 50°C. It provides stable voltage regulation in power supply reference, overvoltage protection, and voltage-clamping circuits across industrial temperature range.
For engineers reviewing the 1N4754CPE3/TR8 datasheet, 1N4754CPE3/TR8 pinout, 1N4754CPE3/TR8 application, or 1N4754CPE3/TR8 equivalent, key selection criteria include its 39 V nominal Zener voltage with tight ±2% tolerance (C suffix), 1 W steady-state dissipation at TL < 105°C, RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR8 suffix) for automated assembly.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable reference voltage across wide current (6.5 mA to 1000 mA) and temperature (–65°C to +150°C) ranges. Its 23 Ω dynamic impedance at 6.5 mA ensures low AC ripple sensitivity, while the 0.25 mA maximum reverse leakage at 29.7 V supports reliable clamping in standby modes.
The DO-41 package delivers 45°C/W junction-to-lead thermal resistance at 10 mm lead length, enabling robust power handling without heatsinking in PCB-mounted applications. Polarity is marked by cathode band; regulation requires cathode-positive bias relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V ±2% at 6.5 mA - precise reference for feedback loops and threshold detection |
| Power Dissipation | 1.0 W at TL < 105°C - supports continuous regulation without forced cooling |
| Dynamic Impedance (ZZT) | 23 Ω @ 6.5 mA - minimizes output voltage variation under load transients |
| Max Regulator Current (IZM) | 1000 mA at TA = 50°C - enables high-current shunt regulation in linear supplies |
| Reverse Leakage (IR) | 5 μA @ 29.7 V - ensures low quiescent current in battery-backed or low-power circuits |
| Thermal Resistance (RθJL) | 45 °C/W junction-to-lead - allows direct thermal path to PCB copper for passive heat sinking |
| Operating Temperature | –65°C to +150°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-lead package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink in reverse bias | Connected to lower-potential node during Zener operation; forward voltage ≤1.2 V @ 200 mA |
| Cathode | Regulated output node | Banded end; held at stable 39 V when reverse-biased above knee voltage; polarity critical for regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables accurate voltage references without post-calibration in precision power supplies |
| RoHS-compliant "e3" termination | Meets global environmental compliance requirements without sacrificing solderability or reliability |
| Tape-and-reel packaging (TR8 suffix) | Supports high-speed pick-and-place assembly with EIA-296 standard carrier tape |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints for manufacturing logistics |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Reduces handling precautions and eliminates need for special ESD workstations |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in adjustable linear regulators like LM317. IC Role / Device Role / Timing Role: Zener diode providing fixed 39 V reference to set output voltage via resistor divider. Use Value: Tight ±2% tolerance ensures output accuracy within ±0.8% over line/load/temperature variations. | Use Scenario: Clamping transient surges on 36 V DC bus in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Shunt protector diverting excess energy to ground when bus exceeds 39 V. Use Value: 1000 mA peak regulator current handles 100 ms surges up to 39 V × 1 A = 39 W without failure. |
| Voltage Threshold Detection | Signal Level Translation |
Use Scenario: Detecting undervoltage condition in 48 V telecom backup systems. IC Role / Device Role / Timing Role: Reverse-biased reference element triggering comparator when input drops below 39 V. Use Value: Low 5 μA leakage at 29.7 V ensures minimal loading on high-impedance sense networks. | Use Scenario: Biasing gate of N-channel MOSFET in 39 V logic-level interface circuit. IC Role / Device Role / Timing Role: Clamp diode limiting gate-source voltage to safe 39 V level. Use Value: 23 Ω dynamic impedance maintains clamp voltage stability even during fast-rising transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4754A | Same 39 V, ±5% tolerance (A suffix), non-RoHS tin-lead plating | Lower cost where RoHS compliance not required; higher voltage drift due to wider tolerance | Select for legacy industrial designs with existing tin-lead assembly lines |
| MMSZ4702T1G | Surface-mount SOD-123 package, same 39 V ±2%, 500 mW rating | Not drop-in compatible; requires PCB redesign; suited for space-constrained consumer electronics | Select when board area is limited and 500 mW power suffices |
Compared with 1N4754A and MMSZ4702T1G, the 1N4754CPE3/TR8 uniquely combines tight ±2% tolerance, 1 W power, RoHS compliance, and tape-and-reel packaging-making it optimal for new industrial power supply designs requiring regulatory compliance and automated assembly.
Availability
1N4754CPE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, telecom backup systems, and PLC I/O protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N4754CPE3/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 for ruggedized voltage regulation in harsh-environment power systems, emphasizing thermal robustness, moisture resilience, and military-grade screening options.
FAQ
What is the Zener voltage tolerance of the 1N4754CPE3/TR8?
The 1N4754CPE3/TR8 has a nominal Zener voltage of 39 V with a ±2% tolerance, indicated by the "C" suffix in the part number. This tolerance is specified at 6.5 mA test current and 25°C lead temperature, enabling tighter regulation than the ±5% 1N4754A variant. The 1N4754CPE3/TR8 maintains this accuracy across its full operating temperature range of –65°C to +150°C.
Does the 1N4754CPE3/TR8 require dry packing before PCB assembly?
No, the 1N4754CPE3/TR8 is moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it has no floor-life limitation and does not require dry packing or baking prior to reflow soldering. This simplifies manufacturing logistics and reduces handling risk compared to higher-MSL components. The 1N4754CPE3/TR8's plastic encapsulation and void-free epoxy body contribute to its moisture resilience.
What is the maximum surge current rating for the 1N4754CPE3/TR8?
The 1N4754CPE3/TR8 has a maximum surge current (ISM) rating of 1000 mA, measured using a ½ sine-wave pulse of 1/120 second duration at 25°C ambient. This rating applies under transient overvoltage conditions and reflects the device's ability to absorb short-duration energy without degradation. The 1N4754CPE3/TR8 achieves this with its 1 W steady-state power capability and low thermal resistance.
Is the 1N4754CPE3/TR8 compatible with lead-free reflow profiles?
Yes, the 1N4754CPE3/TR8 features RoHS-compliant annealed matte-tin plating and is rated for solder temperatures up to 260°C for 10 seconds, fully supporting standard lead-free reflow profiles. Its "e3" suffix confirms compliance with JEDEC J-STD-020 requirements. The 1N4754CPE3/TR8's thermal design also accommodates repeated thermal cycling without bond-wire fatigue or delamination.
How does the thermal resistance of the 1N4754CPE3/TR8 affect PCB layout?
With a junction-to-lead thermal resistance of 45°C/W at 10 mm lead length, the 1N4754CPE3/TR8 relies on copper traces and pads to conduct heat away from the leads. For optimal thermal performance, use ≥4 mm² copper pads per lead and ≥1 mm wide, 25 mm long traces. This layout allows the 1N4754CPE3/TR8 to sustain 1 W dissipation at ambient temperatures up to 45°C on FR4 boards, avoiding derating penalties.
1N4754CPE3/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):
- 39 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 29.7 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)
1N4754CPE3/TR8 FAQ
1.How can I place an order for 1N4754CPE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4754CPE3/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 1N4754CPE3/TR8 reliable?
The price and inventory of 1N4754CPE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4754CPE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4754CPE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4754CPE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4754CPE3/TR8?
1N4754CPE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4754CPE3/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 1N4754CPE3/TR8?
For technical support, including 1N4754CPE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4754CPE3/TR8 requirements.
6.How does Aetrix verify that 1N4754CPE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4754CPE3/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 1N4754CPE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4754CPE3/TR8?
All 1N4754CPE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4754CPE3/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 1N4754CPE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4754CPE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4754CPE3/TR8 Tags
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