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Microchip Technology 1N4735E3/TR13
- Part No.:
- 1N4735E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4735E3/TR13.pdf
- Description:
- DIODE ZENER 6.2V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,919
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Product details
Overview
1N4735E3/TR13 from Microsemi is a 6.2 V, 1 W axial-lead silicon Zener diode in DO-41 package with ±5% voltage tolerance, 41 mA test current, and 2 Ω dynamic impedance at IZT, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4735E3/TR13 datasheet, 1N4735E3/TR13 pinout, 1N4735E3/TR13 application, or 1N4735E3/TR13 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (45 °C/W junction-to-lead), surge current rating (730 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR13).
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. It delivers regulated voltage with low dynamic impedance (2 Ω at 41 mA) and exhibits a temperature coefficient near zero at 6.2 V, minimizing drift over -65 °C to +150 °C operating range.
Designed for through-hole mounting, it features void-free UL94V-0 epoxy encapsulation, cathode band polarity marking, and JEDEC-standard DO-41 mechanical dimensions. Its 1.0 W steady-state power rating derates linearly above 45 °C ambient on FR4 board or 105 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V ±5% - precise reference voltage for feedback loops and clamp thresholds |
| Power Dissipation | 1.0 W at TL < 105 °C - supports continuous regulation without forced cooling |
| Test Current (IZT) | 41 mA - defines nominal operating point for specified VZ and ZZT |
| Dynamic Impedance (ZZT) | 2 Ω at IZT - ensures minimal output voltage variation under load transients |
| Max Reverse Current (IR) | 10 μA at 4.96 V - guarantees low leakage below knee voltage |
| Surge Current (ISM) | 730 mA (½-sine, 1/120 s) - withstands short-duration overvoltage events |
| Thermal Resistance | 45 °C/W junction-to-lead - enables thermal design with standard 3/8″ lead length |
Pinout & Package
DO-41 (JEDEC DO-204AL) axial-lead plastic package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node; reverse-biased during regulation |
| Cathode | Zener breakdown terminal | Banded end; connected to higher-potential node to enable reverse breakdown at 6.2 V |
Key Features
| Feature | Design Value |
|---|---|
| RoHS-compliant "e3" suffix | Matte-tin plating meets EU Directive 2011/65/EU without lead or hazardous substances |
| Moisture sensitivity Level 1 | No dry pack required per IPC/JEDEC J-STD-020B - simplifies SMT handling and storage |
| Tape-and-reel packaging (TR13) | EIA-296 compliant carrier tape - enables automated pick-and-place assembly |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - eliminates need for special ESD handling in production |
| Plastic P-suffix construction | Lower thermal resistance vs. glass-body G-suffix variants - improves power handling reliability |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or op-amp-based shunt regulators. IC Role / Device Role / Timing Role: Provides fixed 6.2 V reference to control output voltage accuracy. Use Value: Maintains ±5% regulation across 1–730 mA operating range with only 2 Ω dynamic impedance. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes on sensor lines. IC Role / Device Role / Timing Role: Shunts excess energy above 6.2 V to ground before damage occurs. Use Value: Absorbs 730 mA surge pulses without degradation, leveraging 1 W steady-state rating. |
| Voltage Monitor Threshold | Signal Level Translation |
Use Scenario: Detecting brown-out conditions in battery-powered instrumentation. IC Role / Device Role / Timing Role: Acts as comparator input threshold via resistor divider biasing. Use Value: Delivers stable 6.2 V trigger point with <10 μA leakage at 4.96 V, ensuring clean transitions. | Use Scenario: Biasing analog front-end stages requiring precise DC offset. IC Role / Device Role / Timing Role: Sets fixed bias point for op-amp inputs or ADC reference dividers. Use Value: Enables accurate level-shifting with minimal temperature-induced drift near zero TC point. |
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" RoHS suffix; Sn/Pb plating; same VZ, IZT, ZZT, package | Not suitable for RoHS-compliant production; requires leaded solder process | Select 1N4735E3/TR13 for new designs requiring compliance and automated assembly. |
| MMSZ4685-TP | Surface-mount SOD-123; 6.2 V ±5%; 500 mW rating; 3 Ω ZZT; different thermal profile | Used where board space or reflow compatibility is prioritized over power handling | Choose MMSZ4685-TP only when footprint constraints prohibit DO-41 or power demand is ≤0.5 W. |
Compared with 1N4735A and MMSZ4685-TP, the 1N4735E3/TR13 uniquely combines RoHS compliance, 1 W power capability, DO-41 mechanical robustness, and tape-and-reel readiness-making it optimal for industrial through-hole power regulation where reliability and regulatory alignment are critical.
Availability
1N4735E3/TR13 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage monitor threshold applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N4735E3/TR13 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, RF, and discrete components for aerospace, defense, and industrial markets.
The 1N47xxAP series was developed to deliver JEDEC-standard, high-stability Zener regulation in ruggedized plastic packages for mission-critical power conditioning and protection functions.
FAQ
What is the Zener voltage tolerance for 1N4735E3/TR13?
The 1N4735E3/TR13 has a nominal Zener voltage of 6.2 V with a tolerance of ±5%, as indicated by the "A" suffix in its base part number. This tolerance is verified at 41 mA test current and 25 °C lead temperature, and applies across the full operating temperature range of -65 °C to +150 °C.
Does 1N4735E3/TR13 support automated assembly?
Yes, the 1N4735E3/TR13 is supplied in EIA-296 compliant tape-and-reel packaging (TR13 designation), enabling direct use in high-speed pick-and-place equipment. Its matte-tin RoHS-compliant plating ensures reliable solder wetting during reflow or wave soldering processes.
What is the maximum surge current rating for 1N4735E3/TR13?
The 1N4735E3/TR13 is rated for a maximum non-repetitive reverse surge current (ISM) of 730 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating supports transient suppression in unprotected input rails without device failure.
How does the thermal resistance of 1N4735E3/TR13 affect PCB layout?
The 1N4735E3/TR13 has a junction-to-lead thermal resistance of 45 °C/W when leads are trimmed to 3/8″ (10 mm) from the body. To maintain 1 W dissipation, keep lead length ≥10 mm and avoid excessive copper pour under the body; FR4 board derating begins at 45 °C ambient with defined pad geometry.
Is 1N4735E3/TR13 compatible with lead-free soldering processes?
Yes, the 1N4735E3/TR13 uses RoHS-compliant annealed matte-tin plating qualified per MIL-STD-750 Method 2026 and supports peak solder temperatures up to 260 °C for 10 seconds-fully compatible with standard lead-free reflow profiles including JEDEC J-STD-020.
1N4735E3/TR13 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)
1N4735E3/TR13 FAQ
1.How can I place an order for 1N4735E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4735E3/TR13 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 1N4735E3/TR13 reliable?
The price and inventory of 1N4735E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4735E3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4735E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4735E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4735E3/TR13?
1N4735E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4735E3/TR13 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 1N4735E3/TR13?
For technical support, including 1N4735E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4735E3/TR13 requirements.
6.How does Aetrix verify that 1N4735E3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4735E3/TR13 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 1N4735E3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4735E3/TR13?
All 1N4735E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4735E3/TR13, 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 1N4735E3/TR13 part is unused and in its original packaging.
Return procedure for 1N4735E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4735E3/TR13 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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Diodes Incorporated
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MM5Z5V1ST1G
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