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Microchip Technology 1N4736CPE3/TR8
- Part No.:
- 1N4736CPE3/TR8
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4736CPE3/TR8.pdf
- Description:
- DIODE ZENER 6.8V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,874
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Product details
Overview
1N4736CPE3/TR8 from Microsemi is a 6.8 V, ±2% tolerance, 1 W silicon Zener diode in DO-41 plastic package, rated for 37 mA test current (IZT), 3.5 Ω dynamic impedance (ZZT), and 700 μA reverse leakage at 4 V (IR). It provides precision voltage regulation in power supply reference and overvoltage protection circuits across industrial temperature range (–65°C to +150°C).
For engineers reviewing the 1N4736CPE3/TR8 datasheet, 1N4736CPE3/TR8 pinout, 1N4736CPE3/TR8 application, or 1N4736CPE3/TR8 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (45°C/W junction-to-lead), surge current rating (660 mA), RoHS-compliant matte-tin plating, and tape-and-reel packaging (TR8) for automated assembly.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable output voltage under varying load and line conditions. Its sharp knee characteristic-verified by dual-point Zener impedance measurement per MicroNote 202-ensures reliable regulation at low currents (IZK = 1 mA, ZZK = 133 Ω).
The DO-41 package enables axial-lead mounting with flexible PCB layout, while moisture sensitivity level 1 (per J-STD-020B) eliminates dry-pack requirements. Thermal performance is specified at 3/8" lead length (45°C/W) and on FR4 board (105°C/W), supporting both leaded and board-level thermal design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±2% at IZT = 37 mA - ensures tight regulation for reference circuits requiring <±136 mV deviation |
| Power Dissipation | 1.0 W at TL ≤ 105°C - supports continuous operation without derating up to 105°C lead temperature |
| Dynamic Impedance | 3.5 Ω at IZT - minimizes output voltage variation under load transients |
| Reverse Leakage | 700 μA max at VR = 4 V - guarantees low standby power loss in clamp applications |
| Surge Current (ISM) | 660 mA (½-sine, 1/120 s) - withstands short-duration overvoltage events without degradation |
| Thermal Resistance | 45°C/W junction-to-lead - enables direct thermal path to heatsink via lead termination |
| Operating Temp | –65°C to +150°C - suitable for automotive under-hood and industrial control environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by color band; terminals are anode and cathode, designed for through-hole mounting with 3/8" (10 mm) lead length standard for thermal rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during regulation; defines polarity for reverse-bias operation |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input; maintains 6.8 V relative to anode when reverse-biased above knee voltage |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener tolerance (C suffix) | Enables high-accuracy voltage references without external trimming components |
| RoHS-compliant matte-tin plating (e3 suffix) | Ensures solderability and reliability under Pb-free reflow profiles (260°C/10 s) |
| Tape-and-reel packaging (TR8 suffix) | Supports high-volume SMT-compatible pick-and-place assembly with EIA-296 compliance |
| Moisture sensitivity Level 1 | Eliminates baking or dry-pack handling prior to assembly, reducing manufacturing overhead |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits handling in standard workstations without special static-control infrastructure |
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 6.8 V threshold for error amplifier comparison. Use Value: Maintains ±2% output accuracy across –65°C to +150°C, reducing need for calibration in field-deployed equipment. | 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 excess energy to ground when line voltage exceeds 6.8 V. Use Value: Limits peak voltage to 6.8 V + forward drop of series resistor, preventing latch-up in 5 V logic systems. |
| Voltage Monitor Threshold | Current Source Bias |
Use Scenario: Detecting brown-out conditions in battery-powered instrumentation using comparator input. IC Role / Device Role / Timing Role: Precision voltage reference for comparator hysteresis or trip-point setting. Use Value: Delivers stable 6.8 V threshold independent of supply ripple, enabling reliable low-battery detection at 7.0 V nominal. | Use Scenario: Establishing constant-current bias for LED drivers or op-amp input stages. IC Role / Device Role / Timing Role: Voltage reference defining current through series resistor (I = (VCC − 6.8 V)/R). Use Value: Achieves <±2% current stability over temperature, critical for consistent LED brightness or analog signal conditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4736A | Same 6.8 V, ±5% tolerance (A suffix), no e3 RoHS marking | Lower accuracy requirement; non-RoHS assembly environments | Select when ±5% regulation suffices and Pb-free compliance is not mandated |
| MMSZ4685T1G | 6.8 V, ±5%, SOD-123 surface-mount package, 500 mW rating | Space-constrained PCBs requiring automated SMT placement | Choose for compact layouts where DO-41 axial leads are impractical |
Compared with 1N4736A and MMSZ4685T1G, the 1N4736CPE3/TR8 delivers tighter ±2% tolerance and full 1 W power handling in a tape-and-reel–ready DO-41 package, making it optimal for high-reliability through-hole designs requiring precision and RoHS compliance.
Availability
1N4736CPE3/TR8 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and voltage monitoring applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for 1N4736CPE3/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 engineered for robust voltage regulation in harsh-environment power systems, emphasizing thermal stability, ESD immunity, and extended temperature operation.
FAQ
What is the Zener voltage tolerance of the 1N4736CPE3/TR8?
The 1N4736CPE3/TR8 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its nominal 6.8 V breakdown voltage is guaranteed between 6.664 V and 6.936 V when measured at 37 mA test current and 25°C lead temperature, supporting high-accuracy reference designs where tighter regulation than standard ±5% parts is required.
Does the 1N4736CPE3/TR8 require dry packing before assembly?
No, the 1N4736CPE3/TR8 does not require dry packing before assembly. It is moisture sensitivity level 1 per IPC/JEDEC J-STD-020B, meaning it can be stored and handled in ambient conditions without baking or desiccant packaging-a benefit confirmed in Microsemi's official documentation and simplifying manufacturing logistics for the 1N4736CPE3/TR8.
What is the maximum surge current rating for the 1N4736CPE3/TR8?
The 1N4736CPE3/TR8 has a maximum surge current (ISM) rating of 660 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25°C ambient. This rating allows the 1N4736CPE3/TR8 to safely absorb transient overvoltage events in clamp and protection circuits without permanent parameter shift or failure.
Is the 1N4736CPE3/TR8 RoHS compliant?
Yes, the 1N4736CPE3/TR8 is RoHS compliant, as indicated by the "e3" suffix. It features annealed matte-tin plating on its leads and meets all substance restrictions defined in Directive 2011/65/EU. The 1N4736CPE3/TR8 is qualified for Pb-free reflow soldering up to 260°C for 10 seconds, ensuring compatibility with modern assembly processes.
What package type and marking does the 1N4736CPE3/TR8 use?
The 1N4736CPE3/TR8 uses the DO-41 (JEDEC DO-204AL) axial-leaded plastic package, with cathode polarity marked by a visible color band. Its body is void-free thermosetting epoxy meeting UL94V-0 flammability rating, and it is marked with the full part number "1N4736CPE3" for traceability. The "TR8" suffix confirms EIA-296–compliant tape-and-reel packaging for automated placement.
1N4736CPE3/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):
- 6.8 V
- Tolerance:
- ±2%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 3.5 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 4 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)
1N4736CPE3/TR8 FAQ
1.How can I place an order for 1N4736CPE3/TR8 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4736CPE3/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 1N4736CPE3/TR8 reliable?
The price and inventory of 1N4736CPE3/TR8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4736CPE3/TR8 is usually 5 days.
3.What payment methods are accepted for 1N4736CPE3/TR8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4736CPE3/TR8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4736CPE3/TR8?
1N4736CPE3/TR8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4736CPE3/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 1N4736CPE3/TR8?
For technical support, including 1N4736CPE3/TR8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4736CPE3/TR8 requirements.
6.How does Aetrix verify that 1N4736CPE3/TR8 is sourced from the original manufacturer or authorized distributors?
All 1N4736CPE3/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 1N4736CPE3/TR8 meets industry standards.
7.What is the process for return or replacement of 1N4736CPE3/TR8?
All 1N4736CPE3/TR8 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4736CPE3/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 1N4736CPE3/TR8 part is unused and in its original packaging.
Return procedure for 1N4736CPE3/TR8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4736CPE3/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
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MM5Z5V1ST1G
onsemi
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