TZX14A-TAP Equivalent & Substitute Parts

Part Overview

The TZX14A-TAP is a 14 V, 500 mW Zener diode manufactured by Vishay General Semiconductor - Diodes Division in DO-35 axial through-hole packaging. This component is classified as Active and carries AEC-Q101 automotive qualification. The TZX14A-TAP is supplied in Tape & Box (TB) packaging format with 60,400 units currently in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical parameters that define Zener diode functionality: nominal Zener voltage, maximum power dissipation, package type, and mounting configuration.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	14	V
Power - Max	500	mW
Package / Case	DO-204AH, DO-35, Axial	—
Mounting Type	Through Hole	—
Operating Temperature Range	-65°C ~ 175°C	°C
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—

Substitute Part Grouping Explanation

Substitution eligibility for the TZX14A-TAP is determined by the following criteria:

Primary Electrical Parameters:

Nominal Zener voltage of 14 V
Maximum power dissipation of 500 mW
Through-hole axial mounting configuration in DO-35 package

Secondary Compliance Parameters:

ROHS3 compliance status
Active product status
Operating temperature range compatibility

The substitute parts identified—1N5244B and 1N5244B TR PBFREE—satisfy all primary electrical parameters and maintain equivalent mechanical compatibility. Both substitutes are manufactured to the same nominal Zener voltage and power rating, utilize identical DO-35 axial packaging, and support through-hole mounting. All parts maintain ROHS3 compliance and active product status.

Parameter Comparison

Parameter	TZX14A-TAP (Main)	1N5244B (TSC)	1N5244B TR PBFREE (CSC)
Manufacturer	Vishay General Semiconductor	Taiwan Semiconductor Corporation	Central Semiconductor Corp
Voltage - Zener (Nom)	14 V	14 V	14 V
Tolerance	—	±5%	±5%
Power - Max	500 mW	500 mW	500 mW
Impedance (Max)	35 Ohms	15 Ohms	15 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 11 V	100 nA @ 10 V	100 nA @ 10 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature Range	-65°C ~ 175°C	200°C (TJ)	-65°C ~ 200°C
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Packaging Format	Tape & Box (TB)	Tape & Reel (TR)	Cut Tape (CT)

Engineering Selection Recommendations

1N5244B (Taiwan Semiconductor Corporation)

The 1N5244B is an active, ROHS3-compliant substitute that matches the primary electrical specifications of the TZX14A-TAP. This part maintains 14 V nominal Zener voltage and 500 mW maximum power dissipation with identical DO-35 axial through-hole packaging. The 1N5244B features improved impedance characteristics (15 Ohms versus 35 Ohms) and lower reverse leakage current (100 nA @ 10 V versus 1 µA @ 11 V). The operating temperature specification is provided as junction temperature (200°C TJ) rather than ambient range. Current inventory is 9,465 units. Packaging is supplied in Tape & Reel (TR) format.

1N5244B TR PBFREE (Central Semiconductor Corp)

The 1N5244B TR PBFREE is an active, ROHS3-compliant substitute with identical electrical performance to the Taiwan Semiconductor Corporation variant. This part maintains 14 V nominal Zener voltage and 500 mW maximum power dissipation in DO-35 axial through-hole configuration. Operating temperature range is specified as -65°C ~ 200°C, providing extended upper temperature capability relative to the TZX14A-TAP. Impedance and reverse leakage characteristics match the TSC variant (15 Ohms, 100 nA @ 10 V). Current inventory is 8,198 units. Packaging is supplied in Cut Tape (CT) format with MSL rating of 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for the TZX14A-TAP to be substituted?

A: The nominal Zener voltage (14 V) and maximum power dissipation (500 mW) are the primary electrical parameters that define substitution eligibility. Both substitute parts maintain these specifications. Secondary parameters such as impedance, reverse leakage current, and forward voltage may differ within acceptable ranges for Zener diode applications.

Q: Are the substitute parts mechanically compatible with the TZX14A-TAP?

A: Yes. All three parts utilize DO-35 axial through-hole packaging (DO-204AH case designation). Mechanical compatibility is maintained for PCB mounting, lead spacing, and component footprint applications.

Q: What is the difference between the two substitute parts?

A: Both 1N5244B variants are electrically equivalent with 14 V nominal Zener voltage and 500 mW power rating. The primary differences are manufacturer (Taiwan Semiconductor Corporation versus Central Semiconductor Corp), packaging format (Tape & Reel versus Cut Tape), and operating temperature specification format. The CSC variant specifies an ambient temperature range of -65°C ~ 200°C, while the TSC variant specifies 200°C as junction temperature.

Q: Does the TZX14A-TAP carry automotive qualification?

A: Yes. The TZX14A-TAP is AEC-Q101 qualified and carries Automotive grade designation. The substitute parts are not explicitly marked with automotive qualification in the provided specifications.

Q: What packaging formats are available?

A: The TZX14A-TAP is supplied in Tape & Box (TB) format. The 1N5244B (TSC) is supplied in Tape & Reel (TR) format. The 1N5244B TR PBFREE (CSC) is supplied in Cut Tape (CT) format. Selection depends on assembly process requirements and tape handling capabilities.

Q: Are all parts ROHS3 compliant?

A: Yes. The TZX14A-TAP, 1N5244B, and 1N5244B TR PBFREE are all ROHS3 compliant. All parts are REACH Unaffected and carry EAR99 ECCN classification.

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