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Microchip Technology 1N4736CE3/TR13
- Part No.:
- 1N4736CE3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4736CE3/TR13.pdf
- Description:
- DIODE ZENER 6.8V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,076
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Product details
Overview
1N4736CE3/TR13 from Microsemi is a 6.8 V, ±2% tolerance, 1 W axial-lead silicon Zener diode in DO-41 package, rated for 37 mA test current (IZT), 3.5 Ω dynamic impedance (ZZT), and 700 μA reverse leakage at 4 V (IR), used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4736CE3/TR13 datasheet, 1N4736CE3/TR13 pinout, 1N4736CE3/TR13 application, or 1N4736CE3/TR13 equivalent, key selection factors include its tight ±2% VZ tolerance (C suffix), RoHS-compliant matte-tin plating (e3), tape-and-reel packaging (TR13), and thermal resistance of 45 °C/W junction-to-lead at 10 mm lead length.
Technical Context
This Zener operates in reverse breakdown to maintain stable 6.8 V output across 1–660 mA regulation current (IZM = 660 mA at TA = 50 °C), with knee current IZK = 1 mA and corresponding ZZK = 133 Ω. Its temperature coefficient is near zero (~0 mV/°C) due to the 6.8 V nominal voltage, minimizing drift over -65 °C to +150 °C operating range.
The device uses void-free UL94V-0 epoxy encapsulation with cathode band polarity marking, tin-lead or RoHS-compliant annealed matte-tin terminals, and meets MIL-STD-750 Method 1020 for ESD insensitivity. It is moisture-sensitive Level 1 per J-STD-020B - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±2% at IZT = 37 mA - ensures precise reference stability for feedback loops and analog sensing. |
| Power Dissipation | 1.0 W at TL < 105 °C (3/8″ lead length) - defines maximum continuous thermal load without derating. |
| Dynamic Impedance (ZZT) | 3.5 Ω at IZT = 37 mA - low AC impedance enables sharp regulation under varying load conditions. |
| Reverse Leakage (IR) | 10 μA max at VR = 4 V - guarantees minimal standby current in undervoltage detection circuits. |
| Thermal Resistance | 45 °C/W junction-to-lead - supports reliable heat transfer through axial leads into PCB copper. |
| Operating Temperature | -65 °C to +150 °C - suitable for industrial, automotive, and aerospace environments with wide thermal cycling. |
| Forward Voltage | 1.2 V max at IF = 200 mA - confirms standard silicon diode conduction behavior during forward bias. |
Pinout & Package
Package: DO-41 (DO-204AL) - axial-lead, plastic-encapsulated, 0.7 g weight, UL94V-0 compliant epoxy body, cathode indicated by colored band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; reverse-biased operation requires this terminal at lower voltage than cathode. |
| Cathode (banded end) | Zener regulation output / voltage reference node | Provides stable 6.8 V relative to anode when reverse-biased above breakdown; must be held positive w.r.t. anode for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance (C suffix) | Enables high-accuracy voltage references without post-calibration in power supply feedback networks. |
| RoHS-compliant matte-tin plating (e3 suffix) | Ensures lead-free solder compatibility and long-term intermetallic reliability per JEDEC J-STD-020B. |
| Tape-and-reel packaging (TR13 suffix) | Supports automated SMT placement despite axial form factor - compatible with pick-and-place feeders using carrier tape. |
| Moisture sensitivity Level 1 | Eliminates bake-out requirement before assembly - reduces manufacturing cost and process complexity. |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Permits handling in standard workstations without special ESD controls - lowers production floor overhead. |
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 setpoint to error amplifier input. Use Value: Maintains ±2% output accuracy over 1–660 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 exceeding 6.8 V. IC Role / Device Role / Timing Role: Shunt clamping device diverting surge current away from sensitive inputs. Use Value: Limits voltage to 6.8 V with 3.5 Ω dynamic impedance, absorbing up to 660 mA peak current without failure. |
| Signal Level Translation | Temperature-Stable Bias Generator |
Use Scenario: Converting 12 V logic signals to 6.8 V-compatible levels for mixed-voltage interface circuits. IC Role / Device Role / Timing Role: Passive level-shifter using Zener breakdown as clamping threshold. Use Value: Provides repeatable 6.8 V clamp with <10 μA leakage at 4 V, minimizing loading on source drivers. |
Use Scenario: Generating bias voltages for op-amp input stages requiring low-drift references. IC Role / Device Role / Timing Role: Precision DC reference source leveraging near-zero tempco at 6.8 V. Use Value: Delivers <±0.005 %/°C drift over -25 °C to +85 °C, outperforming higher-voltage Zeners in stability-critical designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4736A (Microsemi) | Same 6.8 V ±5% (A suffix), non-RoHS tin-lead plating, bulk packaging | Acceptable where RoHS compliance and tape-and-reel are not required | Select for legacy industrial systems with Pb-based solder processes and manual assembly. |
| BZX55C6V8 (Vishay) | 6.8 V ±5%, DO-35 package, 500 mW rating, 10 Ω ZZT at 5 mA | Lower power and impedance performance; unsuitable for >500 mW loads | Choose only for space-constrained boards where 1 W dissipation is unnecessary and DO-35 footprint fits. |
Compared with 1N4736A and BZX55C6V8, the 1N4736CE3/TR13 delivers tighter ±2% tolerance, full 1 W capability, and RoHS-compliant tape-and-reel delivery - making it optimal for new-design power references requiring precision, thermal headroom, and modern assembly compatibility.
Availability
1N4736CE3/TR13 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, and signal level translation applications requiring stable component supply, consistent parametric performance, and RoHS-compliant logistics.
Supply support for 1N4736CE3/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 timing components for aerospace, defense, and industrial markets.
The 1N47xx series was designed specifically for robust, low-cost voltage regulation in harsh-environment power systems - emphasizing thermal resilience, ESD immunity, and long-term parametric stability.
FAQ
What is the Zener voltage tolerance of 1N4736CE3/TR13?
The 1N4736CE3/TR13 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in the part number. This means its measured VZ at 37 mA test current falls within 6.664 V to 6.936 V at 25 °C lead temperature. This tighter tolerance supports high-accuracy feedback loops without calibration, distinguishing it from the ±5% 1N4736A variant.
Does 1N4736CE3/TR13 require dry packing before PCB assembly?
No, the 1N4736CE3/TR13 is moisture sensitivity Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored and assembled without dry pack or baking. Its void-free UL94V-0 epoxy encapsulation and Level 1 classification eliminate moisture-related popcorning risk during reflow, simplifying manufacturing flow.
What is the maximum steady-state current for 1N4736CE3/TR13 at 50 °C ambient?
The maximum regulator current (IZM) for 1N4736CE3/TR13 is 660 mA at TA = 50 °C, as specified in the Electrical Characteristics table. This value reflects the highest continuous reverse current the device can sustain while maintaining regulation at 6.8 V without exceeding its 1 W power limit under those thermal conditions.
How does the thermal resistance of 1N4736CE3/TR13 affect PCB layout?
The 1N4736CE3/TR13 has a junction-to-lead thermal resistance of 45 °C/W at 10 mm lead length. To maintain safe operation, PCB traces connected to its leads should provide adequate copper area (e.g., ≥4 mm² pads) and avoid excessive trace length - especially critical when dissipating >500 mW continuously in enclosed enclosures or high-ambient environments.
Is 1N4736CE3/TR13 compatible with lead-free soldering processes?
Yes, the 1N4736CE3/TR13 features RoHS-compliant annealed matte-tin plating (e3 suffix) and is rated for 260 °C for 10 seconds - fully compatible with standard lead-free reflow profiles. Its UL94V-0 epoxy body withstands repeated thermal excursions without delamination or cracking, ensuring reliability in Pb-free assembly lines.
1N4736CE3/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):
- 6.8 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)
1N4736CE3/TR13 FAQ
1.How can I place an order for 1N4736CE3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4736CE3/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 1N4736CE3/TR13 reliable?
The price and inventory of 1N4736CE3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4736CE3/TR13 is usually 5 days.
3.What payment methods are accepted for 1N4736CE3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4736CE3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4736CE3/TR13?
1N4736CE3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4736CE3/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 1N4736CE3/TR13?
For technical support, including 1N4736CE3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4736CE3/TR13 requirements.
6.How does Aetrix verify that 1N4736CE3/TR13 is sourced from the original manufacturer or authorized distributors?
All 1N4736CE3/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 1N4736CE3/TR13 meets industry standards.
7.What is the process for return or replacement of 1N4736CE3/TR13?
All 1N4736CE3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4736CE3/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 1N4736CE3/TR13 part is unused and in its original packaging.
Return procedure for 1N4736CE3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4736CE3/TR13 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
Diodes Incorporated
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Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MM5Z5V1ST1G
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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Diodes Incorporated
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