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Microchip Technology 1N4736CPE3/TR12
- Part No.:
- 1N4736CPE3/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4736CPE3/TR12.pdf
- Description:
- DIODE ZENER 6.8V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,235
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Product details
Overview
1N4736CPE3/TR12 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 regulates voltage in power supply reference and overvoltage protection circuits across -65°C to +150°C.
For engineers reviewing the 1N4736CPE3/TR12 datasheet, 1N4736CPE3/TR12 pinout, 1N4736CPE3/TR12 application, or 1N4736CPE3/TR12 equivalent, key selection factors include its tight 2% Zener voltage tolerance, low 3.5 Ω dynamic impedance at 37 mA, RoHS-compliant matte-tin plating, tape-and-reel packaging (TR12), and DO-41 mechanical compatibility with axial-lead PCB mounting.
Technical Context
This Zener operates in reverse breakdown to maintain stable voltage under varying load and temperature conditions. Its 6.8 V nominal regulation is specified at 37 mA IZT with ±2% tolerance (C suffix), and it exhibits a sharp knee at 0.5 mA IZK with 133 Ω ZZK - critical for precision reference stability.
Thermal performance is defined by 45°C/W junction-to-lead resistance at 10 mm lead length and 105°C/W junction-to-ambient on FR4 with 4 mm² copper pads. Forward voltage is ≤1.2 V at 200 mA, confirming standard silicon PN junction behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Vz) | 6.8 V ±2% at 37 mA - enables accurate voltage reference in analog feedback loops |
| Power Dissipation | 1.0 W at TL < 105°C - supports continuous regulation in compact linear supplies |
| Dynamic Impedance (ZZT) | 3.5 Ω at IZT = 37 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 700 μA max at VR = 4 V - confirms low standby current in undervoltage detection circuits |
| Test Current (IZT) | 37 mA - defines operating point where Vz and ZZT are guaranteed per JEDEC spec |
| Operating Temperature | -65°C to +150°C - suitable for automotive engine control and industrial motor drive environments |
| Knee Impedance (ZZK) | 133 Ω at IZK = 0.5 mA - provides usable regulation even at low bias currents |
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 | Reverse-biased input terminal | Connected to lower-potential node; accepts reverse current during Zener conduction |
| Cathode (banded end) | Regulated output terminal | Provides stable 6.8 V relative to anode when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Reduces calibration drift in precision voltage references without trimming |
| RoHS-compliant matte-tin plating (e3 suffix) | Enables lead-free reflow soldering per J-STD-020B Level 1 moisture sensitivity |
| Tape-and-reel packaging (TR12 suffix) | Supports automated SMT placement despite axial-lead form factor |
| 45°C/W junction-to-lead thermal resistance | Allows 1 W operation with minimal heatsinking when leads are ≥10 mm from body |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for handling precautions in assembly lines |
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 precise 6.8 V reference to set output voltage via resistor divider. Use Value: ±2% tolerance ensures output accuracy within 0.14 V without post-assembly adjustment. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes exceeding 6.8 V. IC Role / Device Role / Timing Role: Shunts excess current to ground when input exceeds Zener breakdown. Use Value: 3.5 Ω dynamic impedance limits clamping voltage rise to <0.13 V per 37 mA surge. |
| Voltage Monitor Threshold | Current Source Bias |
Use Scenario: Detecting battery voltage drop below 6.8 V in portable equipment. IC Role / Device Role / Timing Role: Acts as stable threshold element in comparator input circuitry. Use Value: Low 700 μA leakage at 4 V ensures minimal loading on high-impedance sense nodes. | Use Scenario: Establishing constant current for LED bias or transistor base drive. IC Role / Device Role / Timing Role: Maintains fixed voltage across series resistor to generate stable current. Use Value: 133 Ω knee impedance allows regulation down to 0.5 mA, enabling microamp-level biasing. |
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 RoHS e3 marking | Acceptable where tighter tolerance not required; legacy non-RoHS design | Select 1N4736CPE3/TR12 for RoHS compliance and ±2% accuracy; choose 1N4736A only if cost or legacy sourcing drives decision |
| BZX55C6V8 | 6.8 V ±5%, DO-35 glass package, 500 mW rating, higher ZZT (~10 Ω) | Limited to lower-power applications; less stable under load due to higher impedance | 1N4736CPE3/TR12 preferred for 1 W, low-ZZT, RoHS, and DO-41 mechanical robustness |
Compared with 1N4736A and BZX55C6V8, the 1N4736CPE3/TR12 delivers tighter voltage control, higher power handling, lower dynamic impedance, and RoHS-compliant packaging - making it optimal for modern industrial and automotive voltage reference designs requiring long-term stability and manufacturability.
Availability
1N4736CPE3/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and voltage monitor applications requiring stable component supply, consistent Zener tolerance, and RoHS-compliant manufacturing.
Supply support for 1N4736CPE3/TR12 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 general-purpose voltage regulation in ruggedized, high-temperature, and mission-critical power systems - emphasizing JEDEC registration, MIL-qualified screening options, and thermal robustness.
FAQ
What is the Zener voltage tolerance of the 1N4736CPE3/TR12?
The 1N4736CPE3/TR12 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its nominal 6.8 V regulation is guaranteed between 6.664 V and 6.936 V when measured at 37 mA test current and 25°C lead temperature. This tighter tolerance supports precision applications where calibration drift must be minimized without external trimming.
Does the 1N4736CPE3/TR12 meet RoHS requirements?
Yes, the 1N4736CPE3/TR12 meets RoHS requirements, confirmed by the "e3" suffix indicating RoHS-compliant annealed matte-tin plating. It is qualified per IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, requires no dry pack, and supports lead-free reflow soldering up to 260°C for 10 seconds - fully compliant with modern environmental directives.
What package type does the 1N4736CPE3/TR12 use?
The 1N4736CPE3/TR12 uses the DO-41 (also designated DO-204AL) axial-leaded plastic package. It features a void-free thermosetting epoxy body rated UL94V-0, tin-lead or RoHS-compliant matte-tin terminals, and cathode identification via a colored band. The TR12 suffix indicates tape-and-reel packaging optimized for automated handling.
What is the maximum power dissipation of the 1N4736CPE3/TR12?
The 1N4736CPE3/TR12 has a maximum steady-state power dissipation of 1.0 W at lead temperature (TL) below 105°C with 10 mm lead length from the body, or at ambient temperature (TA) below 45°C when mounted on FR4 with specified copper pad geometry. Derating is required above these temperatures per the published power derating curve.
How does the dynamic impedance of the 1N4736CPE3/TR12 affect circuit performance?
The 1N4736CPE3/TR12 has a dynamic impedance (ZZT) of 3.5 Ω at 37 mA test current, meaning its regulated output voltage changes by only ~0.13 V for a 37 mA load step. This low impedance ensures minimal regulation error in shunt regulator and voltage reference applications, directly improving stability and accuracy compared to higher-ZZT alternatives like the BZX55C6V8.
1N4736CPE3/TR12 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/TR12 FAQ
1.How can I place an order for 1N4736CPE3/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4736CPE3/TR12 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/TR12 reliable?
The price and inventory of 1N4736CPE3/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4736CPE3/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4736CPE3/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4736CPE3/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4736CPE3/TR12?
1N4736CPE3/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4736CPE3/TR12 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/TR12?
For technical support, including 1N4736CPE3/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4736CPE3/TR12 requirements.
6.How does Aetrix verify that 1N4736CPE3/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4736CPE3/TR12 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/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4736CPE3/TR12?
All 1N4736CPE3/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4736CPE3/TR12, 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/TR12 part is unused and in its original packaging.
Return procedure for 1N4736CPE3/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4736CPE3/TR12 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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