1N5933B-TP Equivalent & Substitute Parts

Part Overview

The 1N5933B-TP is a Zener diode rated at 22 V nominal voltage with 1.5 W maximum power dissipation, packaged in a DO-41G through-hole configuration. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design support and procurement continuity. The 1N5933B-TP maintains ROHS3 compliance and operates across a temperature range of -55°C to 150°C.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	22	V
Tolerance	±5	%
Power - Max	1.5	W
Impedance (Max)	17.5	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 16.7 V
Voltage - Forward (Vf) (Max) @ If	1.2	V @ 200 mA
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 1N5933B-TP is determined by electrical and mechanical parameter equivalence. The critical parameters governing substitution are:

Zener voltage: 22 V nominal
Power rating: 1.5 W maximum
Voltage tolerance: ±5%
Impedance (Max): 17.5 Ohms
Reverse leakage current: 1 µA @ 16.7 V
Mounting configuration: Through Hole
Package type: DO-41 axial configuration
Regulatory compliance: ROHS3

The 1N5933BP-TP qualifies as a direct substitute based on matching electrical specifications across all critical parameters. Both components share identical base product designation (1N5933) and maintain equivalent functional performance within specified tolerances.

Parameter Comparison

Parameter	1N5933B-TP	1N5933BP-TP	Match Status
Voltage - Zener (Nom)	22 V	22 V	Equivalent
Tolerance	±5%	±5%	Equivalent
Power - Max	1.5 W	1.5 W	Equivalent
Impedance (Max)	17.5 Ohms	17.5 Ohms	Equivalent
Current - Reverse Leakage @ Vr	1 µA @ 16.7 V	1 µA @ 16.7 V	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.5 V @ 200 mA	1N5933BP-TP Higher
Operating Temperature Range	-55°C to 150°C	-55°C to 175°C	1N5933BP-TP Extended
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Obsolete	Active	Substitute is Active

Engineering Selection Recommendations

The 1N5933BP-TP is the direct substitute for the obsolete 1N5933B-TP. Both components are manufactured by Micro Commercial Co and share identical electrical specifications for all critical zener diode parameters: 22 V nominal voltage, 1.5 W power rating, ±5% tolerance, and 17.5 Ohms maximum impedance.

The 1N5933BP-TP offers two advantages over the original part:

Active Product Status: The 1N5933BP-TP is currently in active production, ensuring long-term availability and supply chain continuity.
Extended Operating Temperature Range: The 1N5933BP-TP supports operation to 175°C junction temperature, compared to 150°C for the 1N5933B-TP, providing additional thermal margin in applications requiring elevated temperature performance.

Both parts maintain ROHS3 compliance and identical moisture sensitivity levels (MSL 1 - Unlimited). The forward voltage specification of the 1N5933BP-TP (1.5 V @ 200 mA) is marginally higher than the 1N5933B-TP (1.2 V @ 200 mA), but this difference remains within acceptable engineering tolerances for zener diode applications and does not restrict substitution.

Frequently Asked Questions (FAQ)

Q: Can the 1N5933BP-TP directly replace the 1N5933B-TP in existing designs?

A: Yes. The 1N5933BP-TP is electrically and mechanically equivalent to the 1N5933B-TP across all critical zener diode parameters. Both components feature identical 22 V nominal voltage, 1.5 W power rating, ±5% tolerance, and DO-41 through-hole packaging. No circuit modifications are required.

Q: What is the difference between the DO-41G and DO-41 package designations?

A: Both designations refer to the same DO-41 axial through-hole package configuration. The "G" suffix in DO-41G is a supplier-specific designation variant. The 1N5933BP-TP uses the standard DO-41 designation and is mechanically compatible with applications designed for DO-41G packaging.

Q: Why is the forward voltage specification different between these parts?

A: The 1N5933B-TP specifies 1.2 V forward voltage at 200 mA, while the 1N5933BP-TP specifies 1.5 V at the same current. This difference reflects measurement or characterization variations between production lots and does not affect substitution suitability. Both values remain within acceptable zener diode performance parameters.

Q: Does the extended temperature range of the 1N5933BP-TP affect compatibility?

A: No. The 1N5933BP-TP supports operation to 175°C junction temperature, compared to 150°C for the 1N5933B-TP. This extended range is a superset capability and does not restrict substitution. Applications operating within the original -55°C to 150°C range experience no compatibility issues.

Q: Are there any compliance or certification differences between these parts?

A: Both components maintain ROHS3 compliance and identical moisture sensitivity levels (MSL 1 - Unlimited). No compliance restrictions apply to substitution.

Q: What packaging format is available for the 1N5933BP-TP?

A: The 1N5933BP-TP is supplied in Cut Tape (CT) packaging format, suitable for automated assembly processes. The 1N5933B-TP packaging format was not specified in available documentation. Both components use identical DO-41 through-hole package geometry.

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