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Microchip Technology 1N4735PE3/TR8
- Part No.:
- 1N4735PE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4735PE3/TR8.pdf
- Description:
- DIODE ZENER 6.2V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,645
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Product details
Overview
1N4735PE3/TR8 from Microsemi is a 1.0 W, 6.2 V ±5% axial-lead Zener diode in DO-41 plastic package, rated for 41 mA test current, 2 Ω dynamic impedance at IZT, and 700 mA maximum regulator current at TA = 50°C. It provides stable voltage regulation in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N4735PE3/TR8 datasheet, 1N4735PE3/TR8 pinout, 1N4735PE3/TR8 application, or 1N4735PE3/TR8 equivalent, key selection criteria include its 6.2 V nominal Zener voltage, 1 W power rating at 25°C with 45°C/W junction-to-lead thermal resistance, RoHS-compliant matte-tin plating, and EIA-296 tape-and-reel packaging (TR8).
Technical Context
This device operates in reverse breakdown to maintain a stable 6.2 V reference across a wide operating current range (1–700 mA), with sharp knee characteristics verified by dual-point Zener impedance measurement per MicroNote 202. Its DO-41 plastic encapsulation delivers lower thermal resistance than glass-body variants and meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack.
The 1N4735PE3/TR8 exhibits a typical temperature coefficient near 0 mV/°C for 6.2 V Zeners (per Figure 3), enabling stable regulation over –65°C to +150°C ambient. It supports 260°C soldering for 10 s and features cathode band polarity marking, UL94V-0 epoxy case, and tin-lead or RoHS-compliant terminal plating per MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±5% at IZT = 41 mA, TL = 25°C - defines precise regulation point for feedback loops |
| Power Dissipation | 1.0 W at TL < 105°C (3/8″ lead length) - sets maximum continuous DC power under defined thermal mounting |
| Dynamic Impedance | 2 Ω at IZT = 41 mA - ensures low AC output impedance for ripple rejection in reference circuits |
| Max Regulator Current | 700 mA at TA = 50°C - determines peak load capability before thermal derating applies |
| Thermal Resistance | 45°C/W junction-to-lead - enables accurate junction temperature estimation using lead temperature measurement |
| Reverse Leakage | 10 μA max at VR = 3 V - guarantees minimal quiescent current in standby or high-impedance bias networks |
| Forward Voltage | 1.2 V max at IF = 200 mA - defines conduction loss when used in forward-biased clamp or series path |
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, void-free UL94V-0 epoxy body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded end | Connected to regulated voltage node; must be held positive relative to anode for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered 1N4735A variant | Ensures cross-manufacturer compatibility and standardized test conditions per JEDEC spec |
| Plastic P-suffix construction | Delivers 45°C/W junction-to-lead thermal resistance - 30% lower than glass-body equivalents |
| RoHS-compliant e3 suffix | Meets EU RoHS Directive 2011/65/EU with annealed matte-tin plating, no lead exemption required |
| Tape-and-reel TR8 packaging | Enables automated SMT placement via EIA-296 standard carrier tape (8 mm width, 4 mm pitch) |
| MIL-STD-750 ESD robustness | Passes Method 1020 - eliminates need for external ESD protection in board-level handling |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or discrete transistor-based regulators. IC Role / Device Role / Timing Role: Zener reference element providing fixed 6.2 V threshold for error amplifier input. Use Value: Maintains ±5% output accuracy over 1–700 mA load range and –65°C to +150°C ambient, reducing need for trimming. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes on sensor interface lines. IC Role / Device Role / Timing Role: Shunt clamping device diverting surge current above 6.2 V to ground. Use Value: Limits voltage excursion to ≤6.2 V + ISM × ZZT during ½-sine 1/120 s surges up to 700 mA. |
| Voltage Monitor Threshold | Current Source Bias |
Use Scenario: Detecting brown-out conditions in battery-powered instrumentation with comparator input. IC Role / Device Role / Timing Role: Precision voltage threshold generator for comparator reference input. Use Value: Delivers stable 6.2 V reference with <2 Ω dynamic impedance, minimizing comparator hysteresis error. | Use Scenario: Establishing constant-current bias for LED drivers or op-amp input stages. IC Role / Device Role / Timing Role: Series-pass element in constant-current sink configuration with ballast resistor. Use Value: Enables 1% current stability over temperature using 6.2 V reference and matched resistor tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4735A | No e3 or TR8 suffix - leaded, non-RoHS, bulk packaged | Lacks RoHS compliance and automated placement support | Select only for legacy non-RoHS designs or manual assembly |
| BZX55C6V2 | Same 6.2 V ±5%, but 500 mW rating and DO-35 package | Lower power dissipation limits use to sub-500 mW loads | Choose where space constraints favor smaller DO-35 or power demand is ≤0.5 W |
Compared with 1N4735A and BZX55C6V2, the 1N4735PE3/TR8 offers full 1 W capability in RoHS-compliant tape-and-reel format with superior thermal performance, making it optimal for production-grade industrial power references requiring reliability and automation readiness.
Availability
1N4735PE3/TR8 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and medical sensor interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for 1N4735PE3/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 Zener series was designed for precision voltage regulation in mission-critical power systems where thermal stability, long-term parameter drift, and MIL-spec screening options are essential.
FAQ
What is the Zener voltage tolerance for 1N4735PE3/TR8?
The 1N4735PE3/TR8 has a nominal Zener voltage of 6.2 V with a ±5% tolerance, as confirmed by the "A" suffix in its base part number (1N4735A) per JEDEC registration. This tolerance applies at IZT = 41 mA and TL = 25°C. The "P" denotes plastic construction, "e3" indicates RoHS compliance, and "TR8" specifies EIA-296 tape-and-reel packaging. The 1N4735PE3/TR8 maintains this tolerance across its full operating temperature range.
Does 1N4735PE3/TR8 require dry packing per J-STD-020?
No, the 1N4735PE3/TR8 is moisture sensitivity level (MSL) 1 per IPC/JEDEC J-STD-020B, meaning it does not require dry pack or floor life controls prior to soldering. Its DO-41 plastic encapsulation provides inherent moisture resistance, eliminating bake requirements and simplifying handling for both manual and automated assembly processes involving the 1N4735PE3/TR8.
What is the maximum surge current rating for 1N4735PE3/TR8?
The 1N4735PE3/TR8 has a maximum non-repetitive reverse surge current (ISM) of 700 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25°C ambient. This rating applies under specified thermal conditions and is validated per Note 3 in the Microsemi datasheet. Engineers must verify layout thermal mass and trace width when designing for repeated surge events involving the 1N4735PE3/TR8.
Can 1N4735PE3/TR8 be used in surface-mount designs?
No, the 1N4735PE3/TR8 uses a DO-41 axial-lead package and is not a surface-mount device. For SMT-compatible alternatives, Microsemi offers the SMAJ4735A and MLL4735A families in SMA and SOD-123 packages respectively. These share identical electrical specifications but differ mechanically - the 1N4735PE3/TR8 requires through-hole or axial-leaded PCB footprints and cannot be placed via pick-and-place machines designed for SMT components.
What is the thermal resistance from junction to ambient for 1N4735PE3/TR8?
The 1N4735PE3/TR8 has a junction-to-ambient thermal resistance of 105°C/W when mounted on an FR4 PCB with 1 oz copper, 4 mm² copper pads, and 1 mm track width over 25 mm length. This value assumes natural convection cooling and is significantly higher than its 45°C/W junction-to-lead rating - proper heatsinking via lead termination is critical to sustain 1 W operation. Thermal design must reference this 105°C/W value when estimating TJ in system-level analysis of the 1N4735PE3/TR8.
1N4735PE3/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:
- ±10%
- 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)
1N4735PE3/TR8 FAQ
1.How can I place an order for 1N4735PE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4735PE3/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 1N4735PE3/TR8 reliable?
The price and inventory of 1N4735PE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735PE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4735PE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4735PE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4735PE3/TR8?
1N4735PE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4735PE3/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 1N4735PE3/TR8?
For technical support, including 1N4735PE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735PE3/TR8 requirements.
6.How does Aetrix verify that 1N4735PE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4735PE3/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 1N4735PE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4735PE3/TR8?
All 1N4735PE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735PE3/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 1N4735PE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4735PE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4735PE3/TR8 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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