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Microchip Technology 1N4735CPE3/TR8
- Part No.:
- 1N4735CPE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4735CPE3/TR8.pdf
- Description:
- DIODE ZENER 6.2V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,021
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Product details
Overview
1N4735CPE3/TR8 from Microsemi is a 6.2 V, ±2% tolerance, 1 W axial-lead Zener diode in DO-41 plastic package, rated for 41 mA test current and 700 mA maximum regulator current at 50°C, used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N4735CPE3/TR8 datasheet, 1N4735CPE3/TR8 pinout, 1N4735CPE3/TR8 application, or 1N4735CPE3/TR8 equivalent, key selection factors include its tight 2% Zener voltage tolerance, low 2 Ω dynamic impedance at 41 mA, -65°C to +150°C operating range, RoHS-compliant matte-tin plating, and tape-and-reel packaging for automated assembly.
Technical Context
This Zener operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be held positive relative to the anode for regulation. Its 6.2 V nominal Zener voltage exhibits a temperature coefficient near zero (±0.05%/°C typical), enabling stable reference performance across industrial temperature ranges.
The device delivers 1.0 W steady-state power dissipation at lead temperature <105°C (3/8" from body) or ambient <45°C on FR4 board with defined copper pad geometry. Thermal resistance is 45°C/W junction-to-lead and 105°C/W junction-to-ambient under specified mounting conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±2% at 41 mA - ensures precise regulation within narrow band for feedback sensing |
| Power Dissipation | 1.0 W at TL < 105°C - supports continuous operation in compact power supplies |
| Dynamic Impedance (ZZT) | 2 Ω max at IZT = 41 mA - minimizes output voltage variation under load transients |
| Maximum Regulator Current (IZM) | 700 mA at TA = 50°C - enables robust shunt regulation in high-current clamp circuits |
| Reverse Leakage Current | 10 μA max at VR = 4.96 V - guarantees low standby power loss in bias networks |
| Operating Temperature | -65°C to +150°C - suitable for under-hood automotive and industrial control environments |
| Forward Voltage | 1.2 V max at 200 mA - allows use as clamping diode in bidirectional protection schemes |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by colored band; terminals are unmarked anode and banded cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; reverse-biased during regulation |
| Cathode (banded end) | Regulated output node | Held at stable 6.2 V above anode; supplies reference voltage or sinks excess current |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces calibration drift in precision feedback paths without trimming |
| RoHS-compliant matte-tin plating (e3 suffix) | Enables lead-free reflow soldering per JEDEC J-STD-020B Level 1 moisture sensitivity |
| Tape-and-reel packaging (TR8 suffix) | Supports high-speed pick-and-place assembly with EIA-296 standard carrier tape |
| Low thermal resistance (45°C/W) | Permits higher power density mounting with minimal heatsinking in space-constrained designs |
Applications
| Switching Power Supply Feedback | Overvoltage Clamp Circuit |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Provides stable 6.2 V reference to TL431 or similar shunt regulator IC. Use Value: Tight ±2% tolerance ensures output accuracy within ±1% over line/load/temperature without secondary trimming. | Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events exceeding 5.5 V. IC Role / Device Role / Timing Role: Acts as shunt clamp to divert surge current when input exceeds 6.2 V. Use Value: 700 mA peak regulator current handles 100 ns–1 µs surges up to 10 A with external series resistance. |
| Industrial Sensor Excitation | Programmable Voltage Reference |
Use Scenario: Biasing resistive bridge sensors (e.g., strain gauges) in PLC analog input modules. IC Role / Device Role / Timing Role: Supplies stable excitation voltage independent of supply rail fluctuations. Use Value: Near-zero tempco and 2 Ω dynamic impedance maintain excitation stability within ±0.02% over -40°C to +85°C. | Use Scenario: Generating fixed reference for ADCs in battery-powered data loggers. IC Role / Device Role / Timing Role: Serves as primary voltage reference in low-power ratiometric measurement chains. Use Value: 10 μA leakage at 4.96 V minimizes quiescent current draw, extending battery life beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | Same 6.2 V rating but ±5% tolerance (A suffix), no RoHS or tape-and-reel designation | Acceptable where calibration margin permits wider voltage spread; not qualified for lead-free assembly | Select 1N4735CPE3/TR8 when ±2% tolerance and RoHS compliance are required for production release |
| BZX55C6V2 | 6.2 V ±5%, DO-35 glass package, 500 mW rating, different thermal profile | Limited to lower-power applications; incompatible with high-current shunt or high-temp PCB layouts | Choose 1N4735CPE3/TR8 for 1 W operation, DO-41 mechanical robustness, and industrial temperature support |
Compared with 1N4735A and BZX55C6V2, the 1N4735CPE3/TR8 offers tighter voltage control, higher power handling, RoHS compliance, and tape-and-reel readiness-making it optimal for volume-manufactured industrial and automotive power systems requiring long-term calibration stability.
Availability
1N4735CPE3/TR8 is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, and industrial sensor excitation requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N4735CPE3/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 specifically for precision voltage regulation in ruggedized power conversion and protection applications where long-term stability and wide temperature operation are critical.
FAQ
What is the Zener voltage tolerance of the 1N4735CPE3/TR8?
The 1N4735CPE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its measured breakdown voltage at 41 mA test current falls between 6.076 V and 6.324 V at 25°C lead temperature. This tighter tolerance improves accuracy in feedback and reference applications compared to standard ±5% variants like the 1N4735A.
Does the 1N4735CPE3/TR8 support lead-free soldering processes?
Yes, the 1N4735CPE3/TR8 features RoHS-compliant annealed matte-tin plating (indicated by the "e3" suffix) and is qualified for lead-free reflow soldering at 260°C for 10 seconds maximum. Its moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1, eliminating the need for dry-packaging prior to assembly.
What is the maximum continuous current the 1N4735CPE3/TR8 can regulate at 50°C ambient?
At 50°C ambient temperature, the 1N4735CPE3/TR8 supports a maximum regulator current (IZM) of 700 mA. This value is derived from its 1.0 W power rating and thermal derating curve, ensuring safe operation when mounted on FR4 with specified copper pad geometry. Exceeding this current risks thermal runaway or parametric shift.
How is polarity marked on the 1N4735CPE3/TR8?
The 1N4735CPE3/TR8 uses a cathode band to indicate polarity: the banded end is the cathode and must be held positive relative to the unbanded (anode) end during Zener regulation. This marking aligns with JEDEC DO-41 standards and is laser-etched or molded into the plastic body for permanent identification during visual inspection and automated placement.
Is the 1N4735CPE3/TR8 suitable for use in automotive under-hood applications?
Yes, the 1N4735CPE3/TR8 is rated for operation from -65°C to +150°C and meets MIL-PRF-19500 screening requirements when ordered with appropriate prefixes (e.g., MV for JANTXV). Its DO-41 plastic package, void-free epoxy body (UL94V-0), and stable Zener characteristics make it suitable for engine control units, battery management systems, and other under-hood electronics where thermal and environmental resilience are essential.
1N4735CPE3/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):
- 6.2 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 2 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 3 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)
1N4735CPE3/TR8 FAQ
1.How can I place an order for 1N4735CPE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4735CPE3/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 1N4735CPE3/TR8 reliable?
The price and inventory of 1N4735CPE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735CPE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4735CPE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4735CPE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4735CPE3/TR8?
1N4735CPE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4735CPE3/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 1N4735CPE3/TR8?
For technical support, including 1N4735CPE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735CPE3/TR8 requirements.
6.How does Aetrix verify that 1N4735CPE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4735CPE3/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 1N4735CPE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4735CPE3/TR8?
All 1N4735CPE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735CPE3/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 1N4735CPE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4735CPE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4735CPE3/TR8 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
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