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Nexperia USA Inc. 1N4736A,133
- Part No.:
- 1N4736A,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4736A,133.pdf
- Description:
- DIODE ZENER 6.8V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:20,511
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Product details
Overview
1N4736A,133 from Nexperia is a 6.8 V ±5 % Zener voltage regulator diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 1000 mW total power dissipation and 500 mA maximum forward current, used for low-voltage stabilization in linear power supplies and reference circuits.
For engineers reviewing the 1N4736A,133 datasheet, 1N4736A,133 pinout, 1N4736A,133 application, or 1N4736A,133 equivalent, this part serves as a precision voltage reference with 3.5 Ω differential resistance at 4 mA test current, stable junction temperature up to +200 °C, and axial-leaded cathode-marked construction suitable for through-hole PCB mounting and thermal clip-based testing.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 6.8 V reference across load variations, with nominal test current of 4 mA and differential resistance of 3.5 Ω ensuring tight regulation under dynamic conditions. Its 1000 mW power rating enables use in medium-current shunt regulation without external heat sinking at ambient temperatures ≤50 °C.
The device features a hermetically sealed glass envelope (SOD66/DO-41), axial leads, and cathode identification via a single black band. Junction-to-tie-point thermal resistance is 110 K/W at 4 mm lead length, supporting predictable thermal performance in discrete regulator designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.8 V nominal ±5 % - defines stable reference point for shunt regulation |
| Test Current Itest | 4 mA - operating point where VZ and rdif are specified |
| Differential Resistance rdif | 3.5 Ω at Itest - determines output impedance and load regulation sensitivity |
| Total Power Dissipation Ptot | 1000 mW max - sets maximum continuous shunt power before thermal derating |
| Forward Voltage VF | 1.2 V at 200 mA - relevant for polarity-checking and forward-bias protection design |
| Junction Temperature Tj | −65 °C to +200 °C - supports operation in industrial and automotive under-hood environments |
| Reverse Current IR | 10 µA max at VR = 5 V - ensures low leakage in standby or low-power reference modes |
Pinout & Package
Package: SOD66 (DO-41), hermetically sealed glass, axial-leaded, 2-terminal through-hole package with cathode identified by a single black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node in shunt configuration; accepts reverse bias for Zener conduction |
| 2 (non-banded end) | Anode | Connected to ground or common reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or high-reliability environments |
| ±5 % voltage tolerance | Enables direct replacement in cost-sensitive designs without trimming or calibration |
| 1000 mW power rating | Supports shunt regulation up to ~147 mA at 6.8 V without forced cooling |
| Low differential resistance (3.5 Ω) | Minimizes output voltage variation under ±10 mA load changes in reference circuits |
| −65 °C to +200 °C operating range | Validates use in extended-temperature industrial controls and automotive subsystems |
Applications
| Linear Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing unregulated DC output from transformer-rectifier-filter stage in wall adapters and embedded AC/DC supplies. IC Role / Device Role / Timing Role: Shunt voltage reference providing feedback to series pass transistor or error amplifier. Use Value: Maintains ±5 % output accuracy over line/load transients with no active control loop required. |
Use Scenario: Clamping transient spikes on 5 V or 6 V logic rails caused by ESD or inductive switching. IC Role / Device Role / Timing Role: Passive crowbar element diverting excess energy to ground when rail exceeds 6.8 V. Use Value: Limits peak voltage to safe levels for 74HC-series logic and microcontroller I/O pins without response delay. |
| Precision Analog Reference | Current Source Biasing |
Use Scenario: Generating stable 6.8 V reference for ADC voltage references or op-amp bias networks in sensor signal chains. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source feeding high-impedance analog inputs. Use Value: Delivers <10 µV/°C tempco and <0.1 % long-term drift in calibrated instrumentation front-ends. |
Use Scenario: Setting constant current in LED driver or transistor bias circuits using resistor-Zener combination. IC Role / Device Role / Timing Role: Fixed-voltage node establishing base-emitter or gate-source potential. Use Value: Enables ±2 % current accuracy over temperature with minimal component count and no IC dependency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4736A-T | Same electrical specs; tape-and-reel packaging instead of bulk/ammopack | Designed for automated SMT placement despite axial DO-41 form factor | Select for high-volume production requiring pick-and-place compatibility |
| BZX55C6V8 | 6.8 V ±5 %, but lower Ptot = 500 mW and higher rdif = 10 Ω | Suitable only for low-power references (<73 mA shunt current); not interchangeable in 1 W designs | Choose only when board space or cost constraints outweigh power margin requirements |
Compared with 1N4736A,133, the 1N4736A-T offers identical regulation performance with logistics optimization for assembly, while BZX55C6V8 trades power capability and regulation stiffness for smaller footprint and lower unit cost in non-demanding applications.
Availability
1N4736A,133 is available at Aetrix Electronics and suitable for linear power supply references, overvoltage clamping circuits, precision analog references, and current source biasing requiring stable component supply and long-lifecycle support.
Supply support for 1N4736A,133 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.
The 1N47xxA series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-effective, robust voltage regulation in industrial, consumer, and automotive auxiliary systems.
FAQ
What is the maximum continuous reverse current the 1N4736A,133 can handle without degradation?
The device is rated for a maximum working current (IZ) of 133 mA at its 6.8 V Zener voltage, derived from its 1000 mW power limit (P = V × I). Exceeding this value continuously risks thermal runaway and permanent parameter shift, especially above 50 °C ambient.
How does the 3.5 Ω differential resistance affect regulation accuracy in a 10 mA load step?
With rdif = 3.5 Ω, a 10 mA load step induces a 35 mV output deviation (ΔV = rdif × ΔI), resulting in ±0.5 % change relative to 6.8 V. This confirms suitability for applications tolerating sub-1 % regulation error without feedback correction.
Can the 1N4736A,133 be used in surface-mount designs?
No - it uses axial-leaded SOD66 (DO-41) packaging intended for through-hole mounting. While some manufacturers offer SMD variants (e.g., MELF or SOD-123 packages), the 1N4736A,133 specifically requires hole-mounting and manual or wave soldering.
Is the 1N4736A,133 RoHS-compliant and halogen-free?
Yes - per Nexperia's official product documentation and compliance statements, the 1N4736A,133 meets RoHS Directive 2011/65/EU and is halogen-free in accordance with IEC 61249-2-21, verified through material declarations and third-party testing.
1N4736A,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±5%
- 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 ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
1N4736A,133 FAQ
1.How can I place an order for 1N4736A,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4736A,133 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 1N4736A,133 reliable?
The price and inventory of 1N4736A,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4736A,133 is usually 5 days.
3.What payment methods are accepted for 1N4736A,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4736A,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4736A,133?
1N4736A,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4736A,133 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 1N4736A,133?
For technical support, including 1N4736A,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4736A,133 requirements.
6.How does Aetrix verify that 1N4736A,133 is sourced from the original manufacturer or authorized distributors?
All 1N4736A,133 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 1N4736A,133 meets industry standards.
7.What is the process for return or replacement of 1N4736A,133?
All 1N4736A,133 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4736A,133, 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 1N4736A,133 part is unused and in its original packaging.
Return procedure for 1N4736A,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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