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Microchip Technology 1N4736P/TR12
- Part No.:
- 1N4736P/TR12
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4736P/TR12.pdf
- Description:
- DIODE ZENER 6.8V 1W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,676
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Product details
Overview
1N4736P/TR12 from Microsemi is a 6.8 V, 1 W axial-lead silicon Zener diode in DO-41 plastic package with ±5% voltage tolerance, 37 mA test current, and 3.5 Ω dynamic impedance at IZT, used for precision voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N4736P/TR12 datasheet, 1N4736P/TR12 pinout, 1N4736P/TR12 application, or 1N4736P/TR12 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (45 °C/W junction-to-lead), surge current rating (660 mA), reverse leakage (<10 µA at 4 V), and RoHS-compliant matte-tin plating.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable output voltage across varying load and line conditions. It delivers regulation over -65 °C to +150 °C ambient, with 1.2 V forward voltage max at 200 mA and 105 °C/W junction-to-ambient thermal resistance on FR4 board.
Its DO-41 package features void-free UL94V-0 epoxy body, cathode band polarity marking, and tin-lead or RoHS-compliant annealed matte-tin terminals solderable per MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V ±5% at 37 mA - defines regulated output level with tight tolerance for reference stability |
| Power Dissipation | 1.0 W at 25 °C - supports continuous regulation in compact linear supplies without forced cooling |
| Dynamic Impedance (ZZT) | 3.5 Ω at 37 mA - ensures low output voltage variation under changing load current |
| Reverse Leakage Current | <10 µA at 4 V - minimizes standby power loss in high-impedance bias networks |
| Thermal Resistance | 45 °C/W junction-to-lead - enables reliable operation with 3/8″ lead length heat sinking |
| Surge Current (ISM) | 660 mA (½-sine, 1/120 s) - withstands transient overloads during power-up or fault events |
| Operating Temperature | -65 °C to +150 °C - suitable for industrial and automotive under-hood environments |
Pinout & Package
DO-41 (DO-204AL) plastic axial-leaded package with cathode indicated by colored band; leads are tin-lead or RoHS-compliant matte-tin plated, moisture classified IPC/JEDEC Level 1 (no dry pack required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to lower-potential node; carries forward current or sinks reverse leakage |
| Cathode | Banded end | Connected to higher-potential node; develops regulated Zener voltage drop when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-registered Zener | Complies with industry-standard 1N47xxA series mechanical and electrical specifications |
| Plastic P-suffix construction | Lower thermal resistance vs. glass-body G-suffix variants, improving power handling reliability |
| RoHS-compliant "e3" option | Available with annealed matte-tin plating meeting EU Directive 2011/65/EU requirements |
| Tape-and-reel packaging | TR12 suffix denotes EIA-296 standard 12 mm tape for automated SMT placement compatibility |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - no special handling required in assembly |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator ICs or op-amp-based shunt regulators. IC Role / Device Role / Timing Role: Voltage reference element providing precise 6.8 V基准 for error amplifier comparison. Use Value: Maintains ±5% output regulation across 10–100 mA load range with <3.5 Ω dynamic impedance limiting ripple coupling. | Use Scenario: Clamping transient spikes on DC rails in motor drive control boards. IC Role / Device Role / Timing Role: Shunt protection device diverting excess energy to ground above 6.8 V threshold. Use Value: Absorbs 660 mA surge pulses without degradation, protecting downstream logic and analog circuitry. |
| Signal Level Shifting | Temperature-Stable Biasing |
Use Scenario: Generating fixed offset voltages for sensor signal conditioning amplifiers. IC Role / Device Role / Timing Role: Precision DC bias source referenced to system ground. Use Value: Delivers stable 6.8 V with low tempco (≈+2 mV/°C near 6.8 V) minimizing drift over -40 °C to +85 °C. | Use Scenario: Setting collector current in BJT amplifier stages requiring predictable quiescent point. IC Role / Device Role / Timing Role: Fixed-voltage bias generator replacing resistive divider for improved stability. Use Value: Reduces sensitivity to supply variation and temperature drift compared to resistor-only bias networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4736A | No TR12 tape-and-reel; bulk or ammo pack only; identical electrical specs | Lacks automated placement support; requires manual or vibratory bowl feeding | Select 1N4736P/TR12 for SMT production; choose 1N4736A for prototyping or low-volume hand assembly |
| BZX55-C6V8 | Same 6.8 V/5% spec but DO-35 glass package; higher thermal resistance (60 °C/W) | Less suited for sustained 1 W dissipation; preferred where hermeticity or legacy footprint required | Choose BZX55-C6V8 only if DO-35 footprint is fixed; otherwise 1N4736P/TR12 offers superior thermal performance |
Compared with 1N4736A and BZX55-C6V8, the 1N4736P/TR12 provides tape-and-reel automation readiness and lower thermal resistance in DO-41 plastic, enabling higher reliability in thermally constrained 1 W applications without layout change.
Availability
1N4736P/TR12 is available at Aetrix Electronics and suitable for power supply reference, overvoltage protection, signal level shifting, and temperature-stable biasing applications requiring stable component supply across industrial, automotive, and embedded design cycles.
Supply support for 1N4736P/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, RF, and discrete components for aerospace, defense, and industrial markets.
The 1N47xxAP series was designed to deliver JEDEC-standardized, high-stability Zener regulation in ruggedized plastic packages for mission-critical power management and protection functions.
FAQ
What is the Zener voltage tolerance of the 1N4736P/TR12?
The 1N4736P/TR12 has a nominal Zener voltage of 6.8 V with a ±5% tolerance, as indicated by the "A" suffix in its JEDEC designation. This means the actual measured VZ falls between 6.46 V and 7.14 V when tested at 37 mA and 25 °C lead temperature. The tolerance is guaranteed across the full operating temperature range of -65 °C to +150 °C.
Does the 1N4736P/TR12 require dry packing per J-STD-020?
No, the 1N4736P/TR12 does not require dry packing because it is moisture sensitivity level (MSL) 1 per IPC/JEDEC J-STD-020B. Its void-free transfer-molded epoxy body prevents moisture ingress, allowing indefinite floor life at ambient conditions without baking prior to soldering.
What is the maximum surge current rating for the 1N4736P/TR12?
The 1N4736P/TR12 has a maximum non-repetitive surge current (ISM) of 660 mA, measured using a ½-sine wave pulse of 1/120 second duration at 25 °C ambient. This rating applies to transient overvoltage events such as inductive kickback or ESD-induced spikes, and must be derated per thermal limits for repeated surges.
Is the 1N4736P/TR12 RoHS compliant?
Yes, the 1N4736P/TR12 is RoHS compliant, as confirmed by the "e3" suffix in its full manufacturer part number (1N4736AP,e3). It uses annealed matte-tin plating per MIL-STD-750 Method 2026 and meets EU Directive 2011/65/EU requirements for restricted substances.
How does the thermal resistance of the 1N4736P/TR12 compare between junction-to-lead and junction-to-ambient?
The 1N4736P/TR12 has a junction-to-lead thermal resistance of 45 °C/W at 3/8″ (10 mm) lead length, while junction-to-ambient is 105 °C/W on FR4 board with specified copper pad geometry. This 2.3× difference highlights the importance of proper lead heat sinking: mounting with ≥10 mm unclipped leads reduces thermal stress significantly versus relying solely on PCB conduction.
1N4736P/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:
- ±10%
- 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)
1N4736P/TR12 FAQ
1.How can I place an order for 1N4736P/TR12 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4736P/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 1N4736P/TR12 reliable?
The price and inventory of 1N4736P/TR12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4736P/TR12 is usually 5 days.
3.What payment methods are accepted for 1N4736P/TR12?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4736P/TR12 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4736P/TR12?
1N4736P/TR12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4736P/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 1N4736P/TR12?
For technical support, including 1N4736P/TR12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4736P/TR12 requirements.
6.How does Aetrix verify that 1N4736P/TR12 is sourced from the original manufacturer or authorized distributors?
All 1N4736P/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 1N4736P/TR12 meets industry standards.
7.What is the process for return or replacement of 1N4736P/TR12?
All 1N4736P/TR12 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4736P/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 1N4736P/TR12 part is unused and in its original packaging.
Return procedure for 1N4736P/TR12:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4736P/TR12 Tags
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