1N5353B-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N5353B-TP is a 16 V, 5 W Zener diode manufactured by Micro Commercial Co, packaged in DO-15 (DO-204AC) axial through-hole configuration. This component is classified as Active product status and is ROHS3 compliant. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or packaging format preferences.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	16	V
Power - Maximum	5	W
Tolerance	±5	%
Impedance (Maximum)	2.5	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 12.2 V
Voltage - Forward (Maximum) @ If	1.2	V @ 1 A
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial

Substitute Part Grouping Explanation

Substitution of the 1N5353B-TP is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Zener (Nominal): 16 V
Tolerance: ±5%
Power - Maximum: 5 W
Impedance (Maximum): 2.5 Ohms
Mounting Type: Through Hole
Package Category: Axial

Substitution Logic:

Parts with identical zener voltage (16 V), tolerance (±5%), power rating (5 W), and impedance (2.5 Ohms) are classified as direct electrical equivalents. These parts maintain functional compatibility in voltage regulation and protection applications.

The 1N4745ATR is identified as a partial substitute. While it maintains the 16 V zener voltage and ±5% tolerance, its power rating is reduced to 1 W and impedance is increased to 16 Ohms. This part is suitable only for applications with lower power dissipation requirements.

Parts 1N5353B/TR8, 1N5353BG, and 1N5353BRLG are classified as full electrical equivalents with identical zener voltage, tolerance, power rating, and impedance specifications. Differences exist only in packaging format (Tape & Reel versus Cut Tape versus Bulk) and supplier device package designation (T-18 versus DO-15 versus Axial).

Parameter Comparison

Parameter	1N5353B-TP (Main)	1N4745ATR	1N5353B/TR8	1N5353BG	1N5353BRLG
Manufacturer	Micro Commercial Co	Fairchild Semiconductor	Microchip Technology	onsemi	onsemi
Voltage - Zener (Nom)	16 V	16 V	16 V	16 V	16 V
Tolerance	±5%	±5%	±5%	±5%	±5%
Power - Max	5 W	1 W	5 W	5 W	5 W
Impedance (Max)	2.5 Ohms	16 Ohms	2.5 Ohms	2.5 Ohms	2.5 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 12.2 V	5 µA @ 12.2 V	1 µA @ 11.5 V	1 µA @ 12.2 V	1 µA @ 12.2 V
Voltage - Forward (Max) @ If	1.2 V @ 1 A	Not Specified	1.2 V @ 1 A	1.2 V @ 1 A	1.2 V @ 1 A
Operating Temperature Range	-55 to 150°C	-65 to 200°C	-65 to 150°C	-65 to 200°C	-65 to 200°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15, Axial	DO-204AL, DO-41, Axial	T-18, Axial	T-18, Axial	T-18, Axial
Packaging Format	Cut Tape (CT)	Bulk	Tape & Reel (TR)	Bulk	Cut Tape (CT)
RoHS Status	ROHS3 Compliant	Not Specified	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Full Electrical Equivalents (1N5353B/TR8, 1N5353BG, 1N5353BRLG):

These three substitute parts maintain identical electrical specifications to the 1N5353B-TP: 16 V zener voltage, 5 W power rating, 2.5 Ohms maximum impedance, and ±5% tolerance. All three are Active product status. The 1N5353BG and 1N5353BRLG are manufactured by onsemi and are ROHS3 compliant, matching the compliance profile of the main part. The 1N5353B/TR8 from Microchip Technology is RoHS non-compliant and should be selected only when RoHS compliance is not a design requirement. Selection among these three should be based on packaging format availability: Tape & Reel (1N5353B/TR8) for automated assembly, Cut Tape (1N5353BRLG) for manual assembly, or Bulk (1N5353BG) for inventory applications.

Partial Electrical Equivalent (1N4745ATR):

The 1N4745ATR maintains the 16 V zener voltage and ±5% tolerance but operates at reduced power (1 W versus 5 W) with increased impedance (16 Ohms versus 2.5 Ohms). This part is suitable for low-power applications where the 5 W rating of the main part is not required. The 1N4745ATR operates across a wider temperature range (-65 to 200°C) compared to the main part (-55 to 150°C). Selection of this part requires verification that circuit power dissipation does not exceed 1 W.

Compliance Considerations:

For applications requiring ROHS3 compliance, select from 1N5353B-TP (main part), 1N5353BG, or 1N5353BRLG. The 1N5353B/TR8 is not suitable for RoHS-compliant designs.

Frequently Asked Questions (FAQ)

Q: Can the 1N4745ATR be used as a direct replacement for the 1N5353B-TP?

A: The 1N4745ATR is not a direct replacement. While both parts share the same 16 V zener voltage and ±5% tolerance, the 1N4745ATR has a maximum power rating of 1 W compared to 5 W for the 1N5353B-TP. The 1N4745ATR also has higher impedance (16 Ohms versus 2.5 Ohms). Use the 1N4745ATR only in applications where power dissipation is limited to 1 W or less.

Q: What is the difference between 1N5353B/TR8, 1N5353BG, and 1N5353BRLG?

A: These three parts are electrically identical to the 1N5353B-TP with 16 V zener voltage, 5 W power rating, and 2.5 Ohms impedance. The differences are in packaging format and supplier device package: 1N5353B/TR8 is supplied in Tape & Reel format (T-18 package), 1N5353BG is supplied in Bulk format (Axial package), and 1N5353BRLG is supplied in Cut Tape format (Axial package). Selection depends on assembly method and inventory requirements.

Q: Are all substitute parts ROHS3 compliant?

A: No. The 1N5353B-TP, 1N5353BG, and 1N5353BRLG are ROHS3 compliant. The 1N5353B/TR8 is RoHS non-compliant. The 1N4745ATR compliance status is not specified. For designs requiring ROHS3 compliance, use only the 1N5353B-TP, 1N5353BG, or 1N5353BRLG.

Q: Can I use the 1N5353BG or 1N5353BRLG in place of the 1N5353B-TP?

A: Yes. Both the 1N5353BG and 1N5353BRLG are full electrical equivalents with identical zener voltage (16 V), power rating (5 W), impedance (2.5 Ohms), and tolerance (±5%). Both are ROHS3 compliant and Active product status. The only differences are packaging format (Bulk versus Cut Tape) and supplier device package designation. Selection should be based on your assembly process and inventory management requirements.

Q: What is the operating temperature range for each substitute part?

A: The 1N5353B-TP operates from -55°C to 150°C. The 1N4745ATR operates from -65°C to 200°C (wider range). The 1N5353B/TR8 operates from -65°C to 150°C. The 1N5353BG and 1N5353BRLG both operate from -65°C to 200°C. For applications requiring operation below -55°C or above 150°C, select from the substitute parts with extended temperature ranges.

Q: Are there any differences in reverse leakage current between the parts?

A: The 1N5353B-TP, 1N5353B/TR8, 1N5353BG, and 1N5353BRLG all have 1 µA reverse leakage current at their specified reverse voltage. The 1N4745ATR has 5 µA reverse leakage current at 12.2 V, which is higher. For applications sensitive to leakage current, the 1 µA parts are preferred.

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