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1N4741A-TP Zener Diode Equivalent & Substitute Parts
Part Overview
The 1N4741A-TP is an 11 V, 1 W Zener diode manufactured by Micro Commercial Co in DO-41G axial through-hole packaging. This component is classified as obsolete, though 659 pieces remain in stock as new original inventory. The part operates across a temperature range of -65°C to 200°C and is ROHS3 compliant. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nominal) | 11 | V |
| Tolerance | ±5% | % |
| Power - Maximum | 1 | W |
| Impedance (Maximum) | 8 | Ohms |
| Current - Reverse Leakage @ Vr | 5 | µA @ 8.4 V |
| Voltage - Forward (Maximum) @ If | 1.2 | V @ 200 mA |
| Operating Temperature Range | -65 to 200 | °C |
| Mounting Type | Through Hole | |
| Package / Case | DO-204AL, DO-41, Axial |
Substitute Part Grouping Explanation
Substitution eligibility for the 1N4741A-TP is determined by the following critical parameters:
Primary Matching Criteria:
- Zener voltage: 11 V nominal
- Tolerance: ±5%
- Impedance (Maximum): 8 Ohms
- Current - Reverse Leakage @ Vr: 5 µA @ 8.4 V
- Voltage - Forward (Maximum) @ If: 1.2 V @ 200 mA
- Mounting Type: Through Hole
- Package / Case: DO-204AL, DO-41, Axial
Secondary Considerations:
- Power rating: 1 W minimum (higher ratings acceptable)
- Operating temperature range: -65°C minimum to 150°C minimum (full 200°C range preferred)
- Product status: Active status preferred for long-term availability
- RoHS compliance: ROHS3 compliant preferred
Substitute parts are grouped into two categories: direct equivalents matching all primary parameters, and compatible alternatives with enhanced power ratings or temperature specifications that maintain electrical compatibility.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Vz (V) | Tolerance | Power (W) | Zzt (Ohms) | Ir @ Vr (µA) | Vf @ If (V) | Temp Range (°C) | Package | Status |
|---|---|---|---|---|---|---|---|---|---|---|
| 1N4741A-TP | Micro Commercial Co | 11 | ±5% | 1 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 200 | DO-41G | Obsolete |
| 1N4741AP-TP | Micro Commercial Co | 11 | ±5% | 1 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 150 | DO-41 | Active |
| 1N4741A-T50A | onsemi | 11 | ±5% | 1 | 8 | 5 @ 8.4 | Not specified | -65 to 200 | DO-41 | Active |
| BZX85C11 | Taiwan Semiconductor Corporation | 11 | ±5% | 1.3 | 8 | 0.5 @ 8.2 | 1.2 @ 10 mA | -65 to 200 | DO-204AL (DO-41) | Active |
| 1N4741A | Lumimax Optoelectronic Technology | 11 | ±5% | 1 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 200 | DO-41G | Active |
| 1N4741A,133 | NXP Semiconductors | 11 | ±5% | 1 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 200 | DO-41 | Active |
| 1N4741A-TAP | Vishay General Semiconductor - Diodes Division | 11 | ±5% | 1.3 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 175 | DO-204AL (DO-41) | Active |
| 1N4741A-TR | Vishay General Semiconductor - Diodes Division | 11 | ±5% | 1.3 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 175 | DO-204AL (DO-41) | Active |
| 1N4741AGE3 | Microchip Technology | 11 | ±5% | 1 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 175 | DO-41 | Active |
| 1N4741AP/TR12 | Microchip Technology | 11 | ±5% | 1 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 150 | DO-204AL (DO-41) | Active |
| 1N4741AP/TR8 | Microchip Technology | 11 | ±5% | 1 | 8 | 5 @ 8.4 | 1.2 @ 200 mA | -65 to 150 | DO-204AL (DO-41) | Active |
Engineering Selection Recommendations
Direct Equivalents (Preferred for Replacement):
The following parts provide direct electrical and mechanical equivalence to the 1N4741A-TP with active product status:
-
1N4741A (Lumimax Optoelectronic Technology) - Identical electrical specifications and full temperature range (-65°C to 200°C). Available in high volume (62,070 pcs). RoHS compliant. Recommended as primary replacement.
-
1N4741A,133 (NXP Semiconductors) - Identical electrical specifications and full temperature range (-65°C to 200°C). Available in high volume (19,510 pcs). ROHS3 compliant. Suitable for direct substitution.
-
1N4741A-T50A (onsemi) - Identical electrical specifications and full temperature range (-65°C to 200°C). Available in high volume (6,866 pcs). ROHS3 compliant. Suitable for direct substitution.
Compatible Alternatives (Enhanced Specifications):
The following parts provide enhanced power ratings or improved leakage characteristics while maintaining electrical compatibility:
-
BZX85C11 (Taiwan Semiconductor Corporation) - Increased power rating (1.3 W vs. 1 W) and improved reverse leakage (500 nA vs. 5 µA). Full temperature range (-65°C to 200°C). ROHS3 compliant. Suitable for applications requiring lower leakage or higher power dissipation.
-
1N4741A-TAP (Vishay General Semiconductor - Diodes Division) - Increased power rating (1.3 W vs. 1 W). AEC-Q101 automotive qualified. Temperature range -65°C to 175°C. ROHS3 compliant. Suitable for automotive applications.
-
1N4741A-TR (Vishay General Semiconductor - Diodes Division) - Increased power rating (1.3 W vs. 1 W). AEC-Q101 automotive qualified. Temperature range -65°C to 175°C. ROHS3 compliant. Suitable for automotive applications.
Acceptable Alternatives (Limited Temperature Range):
The following parts are electrically equivalent but operate at reduced maximum temperature (-65°C to 150°C):
-
1N4741AP-TP (Micro Commercial Co) - Same manufacturer as original part. Active status. Identical electrical specifications. Temperature range limited to -65°C to 150°C.
-
1N4741AP/TR12 (Microchip Technology) - Identical electrical specifications. Temperature range limited to -65°C to 150°C.
-
1N4741AP/TR8 (Microchip Technology) - Identical electrical specifications. Temperature range limited to -65°C to 150°C.
Compliance Considerations:
All recommended substitutes maintain ROHS3 compliance and REACH unaffected status. The 1N4741AP/TR12 and 1N4741AP/TR8 are noted as RoHS non-compliant and should be avoided in applications requiring RoHS certification.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with a higher power rating than the original 1N4741A-TP?
A: Yes. Parts with 1.3 W power ratings (BZX85C11, 1N4741A-TAP, 1N4741A-TR) are electrically compatible and provide enhanced thermal performance. Higher power ratings do not affect circuit operation when all other electrical parameters remain identical.
Q: What is the difference between DO-41 and DO-41G packaging?
A: Both designations refer to the same axial through-hole package format (DO-204AL). The "G" suffix indicates a specific variant or supplier designation. Parts specified as DO-41 or DO-41G are mechanically and electrically interchangeable.
Q: Why do some substitute parts have a maximum operating temperature of 150°C instead of 200°C?
A: The 1N4741AP-TP, 1N4741AP/TR12, and 1N4741AP/TR8 are rated to 150°C maximum junction temperature. These parts are suitable for applications operating below 150°C. For applications requiring the full -65°C to 200°C range, select alternatives rated to 200°C.
Q: Is the 1N4741A-TP still available for purchase?
A: The 1N4741A-TP is classified as obsolete. While 659 pieces remain in stock as new original inventory, long-term availability is not guaranteed. Active alternatives should be selected for new designs and ongoing procurement.
Q: What is the difference between reverse leakage specifications in the parameter table?
A: Reverse leakage current is specified at different voltage and temperature conditions across manufacturers. The 1N4741A-TP specifies 5 µA @ 8.4 V, while BZX85C11 specifies 500 nA @ 8.2 V. Lower leakage values indicate superior performance in high-impedance applications. Both values are acceptable for standard voltage regulation applications.
Q: Can I use 1N4741A-TAP or 1N4741A-TR in non-automotive applications?
A: Yes. Automotive-qualified parts (AEC-Q101) exceed the requirements of standard industrial applications. These parts are fully compatible with non-automotive designs and provide additional reliability assurance.
Q: What packaging format should I select for my application?
A: The original 1N4741A-TP uses Tape & Reel (TR) packaging. Equivalent parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT), Tape & Box (TB), and Bulk. Select packaging based on your procurement volume and assembly process requirements. All formats contain identical components.
Q: Are all substitute parts ROHS3 compliant?
A: Most substitute parts are ROHS3 compliant. The 1N4741AP/TR12 and 1N4741AP/TR8 are noted as RoHS non-compliant. Verify RoHS compliance status for your specific application requirements before selection.
Q: What is the base product number for the 1N4741A-TP?
A: The base product number is 1N4741. Variations in the suffix (A, AP, etc.) and packaging designation indicate different manufacturers, packaging formats, or temperature ratings, but all share the same core 1N4741 design.
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