1N4749AAlternatives & Equivalent Parts
About 1N4749A
1N4749A is a Zener Diode component manufactured by Taiwan Semiconductor. It comes in a Diodes, Axial Diameter Horizontal Mounting package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | 1N4749ASource | KBP303G | MC7815CTG |
|---|---|---|---|
| Manufacturer | Taiwan Semiconductor | Taiwan Semiconductor | ON Semiconductor |
| Package Type | Diodes, Axial Diameter Horizontal Mounting | Other | Transistor Outline, Vertical |
| Pin Count | 2 | 4 | 3 |
| Temperature Range | -55.0°C ~ 150.0°C | -55.0°C ~ 150.0°C | — |
| Price | $0.0105 | — | $0.1970 |
| Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | OBSOLETE | ACTIVE |
| Electrical Parameters | |||
| Factory Lead Time | 12 Weeks | — | — |
| YTEOL | 5.85 | 0 | 6.01 |
| Case Connection | ISOLATED | ISOLATED | — |
| Configuration | SINGLE | BRIDGE, 4 ELEMENTS | — |
| Diode Element Material | SILICON | SILICON | — |
| Diode Type | ZENER DIODE | BRIDGE RECTIFIER DIODE | — |
| Dynamic Impedance-Max | 25 Ω | — | — |
| JEDEC-95 Code | DO-41 | — | — |
| JESD-30 Code | O-PALF-W2 | R-PSIP-W4 | R-XSFM-T3 |
| JESD-609 Code | e3 | — | e3 |
| Number of Elements | 1 | 4 | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | UNSPECIFIED |
| Package Shape | ROUND | RECTANGULAR | RECTANGULAR |
| Package Style | LONG FORM | IN-LINE | FLANGE MOUNT |
| Peak Reflow Temperature (Cel) | 260 | 260 | — |
| Polarity | UNIDIRECTIONAL | — | — |
| Power Dissipation-Max | 1 W | — | — |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified |
| Reference Voltage-Nom | 24 V | — | — |
| Surface Mount | NO | NO | NO |
| Technology | ZENER | — | BIPOLAR |
| Terminal Finish | Matte Tin (Sn) | PURE TIN | Matte Tin (Sn) - annealed |
| Terminal Form | WIRE | WIRE | THROUGH-HOLE |
| Terminal Position | AXIAL | SINGLE | SINGLE |
| Voltage Tol-Max | 5% | — | — |
| Working Test Current | 10.5 mA | — | — |
| Breakdown Voltage-Min | — | 200 V | — |
| Forward Voltage-Max (VF) | — | 1.1 V | — |
| Non-rep Pk Forward Current-Max | — | 80 A | — |
| Number of Phases | — | 1 | — |
| Output Current-Max | — | 3 A | — |
| Reference Standard | — | UL RECOGNIZED | — |
| Rep Pk Reverse Voltage-Max | — | 200 V | — |
| Pbfree Code | — | — | Yes |
| Manufacturer Package Code | — | — | 221AB |
| Adjustability | — | — | FIXED |
| Dropout Voltage1-Nom | — | — | 2 V |
| Input Voltage Absolute-Max | — | — | 35 V |
| Input Voltage-Max | — | — | 30 V |
| Input Voltage-Min | — | — | 17.9 V |
| Line Regulation-Max | — | — | 0.03% |
| Load Regulation-Max | — | — | 0.055% |
| Number of Functions | — | — | 1 |
| Number of Outputs | — | — | 1 |
| Operating Temperature TJ-Max | — | — | 125 °C |
| Output Current1-Max | — | — | 1 A |
| Output Voltage1-Max | — | — | 15.75 V |
| Output Voltage1-Min | — | — | 14.25 V |
| Output Voltage1-Nom | — | — | 15 V |
| Package Equivalence Code | — | — | SIP3,.1TB |
| Packing Method | — | — | RAIL |
| Regulator Type | — | — | FIXED POSITIVE SINGLE OUTPUT STANDARD REGULATOR |
| Terminal Pitch | — | — | 2.54 mm |
| Voltage Tolerance-Max | — | — | 5% |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
Get one quote covering all 2 alternatives for 1N4749A — response within 24 hours.
Quick Links
Why Look for Alternatives?
Finding alternatives for 1N4749A is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating 1N4749A replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to 1N4749A?
Known equivalents for 1N4749A include KBP303G, MC7815CTG. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of 1N4749A?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify 1N4749A alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.