1N4741AW-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4741AW-TP is an 11 V, 1 W surface mount zener diode in SOD-123 package manufactured by Micro Commercial Co. This part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical performance across voltage regulation, power dissipation, and thermal operating ranges while accommodating packaging and compliance requirements.

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	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—

Substitute Part Grouping Explanation

Substitution eligibility for the 1N4741AW-TP is determined by the following critical parameters:

Electrical Parameters:

Zener voltage: 11 V nominal
Tolerance: ±5%
Maximum power dissipation: 1 W
Operating temperature range: -55°C to 150°C
Impedance and leakage characteristics within specified limits

Mechanical Parameters:

Mounting type: Surface Mount
Package compatibility: SOD-123 or SOD-123F variants

Compliance Parameters:

RoHS3 compliance required
Moisture Sensitivity Level: 1 (Unlimited)

Parts meeting these criteria are classified as direct substitutes or parametric equivalents. Direct substitutes maintain identical electrical specifications with active product status. Parametric equivalents provide equivalent electrical performance with minor variations in secondary characteristics such as impedance or leakage current within acceptable engineering tolerances.

Parameter Comparison

Parameter	1N4741AW-TP	DFLZ11-TP	MM1W11
Manufacturer	Micro Commercial Co	Micro Commercial Co	NextGen Components
Product Status	Obsolete	Active	Active
Voltage - Zener (Nom)	11 V	11 V	11 V
Tolerance	±5%	±5%	±5%
Power - Max	1 W	1 W	1 W
Impedance (Max)	8 Ohms	7 Ohms	8 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 8.4 V	4 µA @ 8.2 V	5 µA @ 8 V
Voltage - Forward (Max) @ If	1.2 V @ 200 mA	1.2 V @ 200 mA	1.2 V @ 10 mA
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C (TJ)	-55°C ~ 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123	SOD-123F	SOD-123
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

DFLZ11-TP (Direct Substitute - Recommended for Primary Selection)

The DFLZ11-TP is an active product from the original manufacturer, Micro Commercial Co, with identical electrical specifications to the 1N4741AW-TP. This part maintains 11 V nominal zener voltage, ±5% tolerance, and 1 W maximum power rating. The SOD-123F package is mechanically compatible with SOD-123 footprints in standard PCB designs. Impedance is reduced to 7 Ohms (versus 8 Ohms), and reverse leakage current is lower at 4 µA, representing improved performance characteristics. ROHS3 compliance and unlimited moisture sensitivity rating ensure regulatory and environmental compatibility. Active product status guarantees long-term availability and supply chain stability.

MM1W11 (Parametric Equivalent - Alternative Selection)

The MM1W11 from NextGen Components provides parametric equivalence with identical zener voltage, tolerance, and power rating. This part maintains 8 Ohms impedance and 5 µA reverse leakage current, matching the original 1N4741AW-TP specifications. The SOD-123 package provides direct footprint compatibility. RoHS compliance and unlimited MSL rating satisfy environmental requirements. Active product status and higher inventory availability (4400 pcs) support production continuity. Forward voltage specification differs at 1.2 V @ 10 mA versus the original 1.2 V @ 200 mA, reflecting different measurement conditions rather than functional incompatibility.

Frequently Asked Questions (FAQ)

Q: Can DFLZ11-TP replace 1N4741AW-TP in existing designs?

A: Yes. The DFLZ11-TP maintains identical electrical specifications for zener voltage, tolerance, power rating, and operating temperature range. The SOD-123F package is mechanically compatible with SOD-123 PCB footprints. No circuit redesign is required.

Q: What is the difference between SOD-123 and SOD-123F packages?

A: SOD-123F is a variant of the SOD-123 package with enhanced thermal characteristics. Both packages are mechanically compatible with standard SOD-123 PCB footprints. The DFLZ11-TP in SOD-123F package provides improved thermal performance while maintaining electrical equivalence.

Q: Is MM1W11 a direct substitute or parametric equivalent?

A: MM1W11 is a parametric equivalent. It provides identical zener voltage, tolerance, power rating, and impedance specifications. The forward voltage measurement condition differs (10 mA versus 200 mA), but this does not affect functional compatibility in voltage regulation applications.

Q: Why is 1N4741AW-TP classified as obsolete?

A: Product status reflects manufacturer discontinuation. Active alternatives DFLZ11-TP and MM1W11 provide equivalent or superior performance with assured long-term availability.

Q: Are all substitute parts RoHS compliant?

A: Yes. The 1N4741AW-TP is ROHS3 compliant. Both DFLZ11-TP (ROHS3) and MM1W11 (RoHS) meet regulatory compliance requirements for environmental and hazardous substance restrictions.

Q: What is the significance of Moisture Sensitivity Level 1?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All three parts share this rating, eliminating moisture management considerations during substitution.

Q: Can I use MM1W11 if DFLZ11-TP is unavailable?

A: Yes. MM1W11 provides parametric equivalence with identical core electrical specifications. Selection between DFLZ11-TP and MM1W11 depends on availability, supplier preference, and inventory management rather than technical compatibility.

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