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Nexperia USA Inc. 1N4740A,133
- Part No.:
- 1N4740A,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
1N4740A,133.pdf
- Description:
- DIODE ZENER 10V 1W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:2,072
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Product details
Overview
1N4740A,133 from Nexperia is a 10 V ±5 % Zener voltage regulator diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 1000 mW total power dissipation and 7.6 mA working current at 10 V, used for low-voltage stabilization in linear power supplies and reference circuits.
For engineers reviewing the 1N4740A,133 datasheet, 1N4740A,133 pinout, 1N4740A,133 application, or 1N4740A,133 equivalent, this page delivers verified Zener parameters, cathode/anode terminal mapping, thermal resistance (110 K/W), reverse current limit (0.25 µA at 7.6 V), and direct alternatives for precision voltage reference design.
Technical Context
This device operates as a two-terminal silicon Zener diode, conducting in reverse breakdown to maintain stable DC voltage under varying load and line conditions. It exhibits 7 Ω differential resistance at test current and is characterized at Tj = 25 °C with thermal equilibrium in still air per IEC 60134.
The 1N4740A,133 is designed for continuous DC regulation-not transient suppression-and requires external current limiting. Its junction temperature range (−65 °C to +200 °C) and storage capability support industrial and automotive ambient environments where passive voltage references are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 10 V nominal, ±5 % tolerance - defines precise DC reference point for feedback or bias networks |
| Test current Itest | 25 mA - standardized operating point for VZ measurement and regulation stability validation |
| Differential resistance rdif | 7 Ω - determines output impedance and load regulation error (ΔVZ ≈ ΔIZ × 7 Ω) |
| Reverse current IR | 0.25 µA max at 7.6 V - ensures minimal leakage in high-impedance reference paths |
| Total power dissipation Ptot | 1000 mW - sets maximum steady-state power handling before thermal derating applies |
| Forward voltage VF | 1.2 V max at 200 mA - relevant for forward-bias protection or polarity-checking circuits |
| Junction temperature Tj | −65 °C to +200 °C - enables operation in extended-temperature industrial control modules |
Pinout & Package
Hermetically sealed axial-leaded SOD66 (DO-41) glass package with 2 mm diameter body and 25.4 mm lead length; marking band denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased during normal Zener operation |
| 2 (unbanded end) | Anode | Connected to ground or lower-potential rail; completes current path through series resistor |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or outdoor environments |
| ±5 % VZ tolerance | Enables use without post-manufacture trimming in cost-sensitive consumer power rails |
| 110 K/W thermal resistance | Supports predictable junction-to-lead thermal modeling for PCB copper pour and heatsinking |
| 25 mA test current standardization | Ensures consistent VZ comparison across production lots and supplier alternatives |
| 200 °C max junction temperature | Permits operation in enclosed enclosures with limited airflow, such as industrial sensor housings |
Applications
| Linear Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing 12 V input to generate a clean 10 V reference for op-amp biasing in analog front-ends. IC Role / Device Role / Timing Role: Passive voltage reference element providing fixed potential against which feedback loops regulate output. Use Value: Delivers 10 V ±5 % accuracy with <7 Ω dynamic impedance, minimizing load-induced voltage shift in 1–10 mA current ranges. |
Use Scenario: Clamping transient spikes on 5 V logic rails using series resistor and 1N4740A,133 to prevent IC damage. IC Role / Device Role / Timing Role: Voltage-limiting shunt element that conducts only above 10 V, diverting excess energy to ground. Use Value: Limits peak voltage to ≤10.5 V (10 V + 5 %) with 0.25 µA leakage below clamp threshold, preserving signal integrity. |
| Temperature-Stable Bias Network | Low-Cost ADC Reference |
Use Scenario: Generating a stable bias point for transistor amplifiers in automotive cabin sensors exposed to −40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Zener-based reference source compensating for base-emitter voltage drift via matched thermal coefficient. Use Value: Maintains regulation across −65 °C to +200 °C junction range, enabling reliable biasing without active compensation circuitry. |
Use Scenario: Providing 10 V reference for 10-bit SAR ADC in industrial data loggers requiring <1 % full-scale accuracy. IC Role / Device Role / Timing Role: Precision DC reference node for analog-to-digital conversion scaling. Use Value: Achieves 10 V ±0.5 V absolute accuracy and <7 Ω output impedance, reducing code uncertainty due to reference droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A-T | Same electrical specs; tape-and-reel packaging (3000 pcs/reel) vs. bulk (1N4740A,133 = 1000 pcs/bulk) | No functional difference; optimized for automated SMT placement rather than manual/hand-solder prototyping | Select for high-volume production lines requiring reel-fed pick-and-place feeders |
| BZX55C10 | 10 V ±5 %, but 500 mW Ptot, higher rdif (20 Ω), and DO-35 package (smaller, less robust leads) | Limited to lower-power applications; unsuitable for >500 mW sustained dissipation or mechanical stress environments | Choose only when board space is constrained and thermal load remains below 400 mW |
Compared with 1N4740A,133, the 1N4740A-T offers identical regulation performance with logistics optimization for volume assembly, while BZX55C10 trades power handling and mechanical reliability for compactness-making it viable only in low-dissipation, space-constrained designs.
Availability
1N4740A,133 is available at Aetrix Electronics and suitable for linear power supply references, overvoltage clamping circuits, temperature-stable bias networks, and low-cost ADC references requiring stable component supply and traceable sourcing.
Supply support for 1N4740A,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 specifically for cost-effective, stable DC voltage regulation in industrial, consumer, and automotive auxiliary power systems.
FAQ
What is the maximum continuous reverse current the 1N4740A,133 can handle without degradation?
The 1N4740A,133 is rated for a working current IZ of 7.6 mA at its nominal 10 V Zener voltage. Its non-repetitive peak reverse current IZSM is 454 mA, but continuous operation must remain within the 1000 mW power limit-so at 10 V, maximum sustainable IZ is 100 mA, though derating is required above Tamb = 50 °C per the thermal resistance spec.
Can the 1N4740A,133 be used in place of a 9.1 V Zener like the 1N4739A?
No-Zener diodes are not interchangeable by proximity of voltage rating. The 1N4740A,133 has a nominal 10 V breakdown, while the 1N4739A is 9.1 V. Substituting introduces a 9.9 % error in reference voltage, directly impacting regulation accuracy, feedback loop gain, and system-level calibration. Always match nominal VZ and tolerance class.
Does the 1N4740A,133 require a heatsink in typical applications?
Not under standard conditions: at 7.6 mA and 10 V (76 mW), self-heating is negligible. Even at full 1000 mW dissipation, the 110 K/W thermal resistance implies ~110 K rise above ambient-so heatsinking becomes necessary only if ambient exceeds 90 °C or if long-term reliability at >150 °C junction temperature is required. PCB copper pour suffices for most uses.
How does the 5 % tolerance affect circuit accuracy when used as an ADC reference?
A ±5 % VZ tolerance means the actual regulation voltage may range from 9.5 V to 10.5 V. For a 10-bit ADC with 10 V full scale, this introduces up to ±51 LSB offset error-equivalent to ~5 % full-scale error. To achieve sub-1 % accuracy, additional trimming, calibration, or tighter-tolerance references (e.g., TL431-based) are required.
1N4740A,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):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 7.6 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
1N4740A,133 FAQ
1.How can I place an order for 1N4740A,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4740A,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 1N4740A,133 reliable?
The price and inventory of 1N4740A,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4740A,133 is usually 5 days.
3.What payment methods are accepted for 1N4740A,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4740A,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4740A,133?
1N4740A,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4740A,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 1N4740A,133?
For technical support, including 1N4740A,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4740A,133 requirements.
6.How does Aetrix verify that 1N4740A,133 is sourced from the original manufacturer or authorized distributors?
All 1N4740A,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 1N4740A,133 meets industry standards.
7.What is the process for return or replacement of 1N4740A,133?
All 1N4740A,133 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4740A,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 1N4740A,133 part is unused and in its original packaging.
Return procedure for 1N4740A,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4740A,133 Tags
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