2M16ZH Zener Diode Equivalent & Substitute Parts

Part Overview

The 2M16ZH is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 16 V nominal Zener voltage and 2 W maximum power dissipation in a DO-204AC (DO-15) axial through-hole package. This component is qualified to AEC-Q101 automotive standards and complies with ROHS3 and REACH requirements. Substitute parts are identified when equivalent electrical performance is required, inventory availability is a consideration, or alternative packaging formats are acceptable within the application's mechanical and thermal constraints.

Substiute Parts

2M16ZH

Taiwan Semiconductor CorporationIn Stock: 10362M16ZH Datasheet

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1N5352B-TP

Micro Commercial CoIn Stock: 186631N5352B-TP Datasheet

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1N5353B-TP

Micro Commercial CoIn Stock: 40391N5353B-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2M16ZH is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage (Vz) nominal value: 16 V
• Voltage tolerance: ±5%
• Mounting type: Through Hole
• Package compatibility: DO-15 / DO-204AC axial format
• Operating temperature range: minimum -55°C to 175°C
• Compliance status: ROHS3 and REACH requirements

Secondary Considerations:

• Power rating: The 2M16ZH is rated 2 W maximum. Substitute parts with higher power ratings (5 W) remain functionally compatible in applications where the 2 W rating is sufficient, as they do not exceed the thermal or electrical requirements of the original design.
• Impedance (Zzt): Substitute parts with lower impedance values provide improved transient response characteristics.
• Reverse leakage current: Substitute parts with lower leakage current values indicate improved device quality.

The identified substitute parts 1N5353B-TP and 1N5352B-TP meet the core electrical and mechanical compatibility requirements. The 1N5353B-TP maintains the 16 V Zener voltage specification. The 1N5352B-TP operates at 15 V, which falls within the ±5% tolerance band of the 16 V nominal specification and is therefore electrically compatible.

Parameter Comparison

Engineering Selection Recommendations

1N5353B-TP Selection: The 1N5353B-TP is the primary direct substitute for the 2M16ZH. Both devices maintain identical 16 V Zener voltage specifications and ±5% tolerance. The 1N5353B-TP provides higher power dissipation capability (5 W versus 2 W), lower impedance (2.5 Ohms versus 8 Ohms), and improved reverse leakage characteristics. Both parts are ROHS3 compliant and REACH unaffected. The 1N5353B-TP operates across -55°C to 150°C, which covers the primary operating range of the 2M16ZH. All three components share identical package specifications (DO-15 / DO-204AC axial through-hole format), ensuring mechanical and electrical compatibility on printed circuit boards.

1N5352B-TP Selection: The 1N5352B-TP operates at 15 V nominal Zener voltage. Within the ±5% tolerance specification, this represents a 6.25% deviation from the 16 V nominal value of the 2M16ZH. This part is electrically compatible in applications where the Zener voltage tolerance band permits operation at 15 V. The 1N5352B-TP offers the same advantages as the 1N5353B-TP regarding power rating, impedance, and leakage current performance. Selection of this part requires confirmation that the application circuit tolerates the lower Zener voltage.

Compliance and Inventory: All three parts maintain active product status and full regulatory compliance (ROHS3, REACH, EAR99 classification). The 1N5353B-TP and 1N5352B-TP are available in higher inventory quantities (4012 and 18577 units respectively) compared to the 2M16ZH (1010 units), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 1N5353B-TP directly replace the 2M16ZH in all applications?

A: Yes. The 1N5353B-TP maintains the same 16 V Zener voltage and ±5% tolerance as the 2M16ZH. Both devices use identical DO-15 / DO-204AC axial through-hole packaging. The higher power rating (5 W) and lower impedance of the 1N5353B-TP do not create compatibility issues; these characteristics represent performance improvements. Both parts are ROHS3 compliant and REACH unaffected.

Q: What is the significance of the 15 V rating on the 1N5352B-TP?

A: The 1N5352B-TP is rated 15 V nominal with ±5% tolerance. This tolerance band spans 14.25 V to 15.75 V. The 2M16ZH is rated 16 V with ±5% tolerance, spanning 15.2 V to 16.8 V. The tolerance bands overlap between 15.2 V and 15.75 V. The 1N5352B-TP is electrically compatible in applications where the circuit design accommodates operation at 15 V nominal Zener voltage.

Q: Does the higher power rating of the substitute parts affect circuit operation?

A: No. Power rating indicates the maximum power dissipation the device can safely handle. A device rated for 5 W can operate in circuits designed for 2 W dissipation without adverse effects. The substitute parts will not generate excess heat or current in the original application.

Q: Are the substitute parts available in the same packaging format?

A: Yes. All three parts (2M16ZH, 1N5353B-TP, and 1N5352B-TP) use DO-15 / DO-204AC axial through-hole packaging. Physical dimensions and lead spacing are identical, permitting direct board-level substitution without layout modifications.

Q: What is the operating temperature difference between the main part and substitutes?

A: The 2M16ZH operates across -55°C to 175°C. The 1N5353B-TP and 1N5352B-TP operate across -55°C to 150°C. The substitute parts cover the primary operating range but do not extend to the upper temperature limit of the 2M16ZH. Applications requiring operation above 150°C must retain the 2M16ZH.

Q: Are all three parts automotive-qualified?

A: The 2M16ZH carries AEC-Q101 automotive qualification. The 1N5353B-TP and 1N5352B-TP specifications provided do not explicitly state AEC-Q101 qualification. Automotive applications requiring AEC-Q101 certification should confirm qualification status with the manufacturer before substitution.

Q: How do impedance differences affect circuit performance?

A: Impedance (Zzt) affects transient response and voltage regulation characteristics. The 2M16ZH has 8 Ohms maximum impedance. The substitute parts have 2.5 Ohms maximum impedance, representing lower impedance. Lower impedance provides faster response to load transients and improved voltage regulation. This is a performance enhancement in most applications.

Q: What is the significance of reverse leakage current differences?

A: The 2M16ZH specifies 500 nA reverse leakage at 12.2 V. The substitute parts specify 1 µA reverse leakage (1N5353B-TP at 12.2 V; 1N5352B-TP at 11.5 V). Lower leakage current indicates superior device quality and reduced standby power consumption. The substitute parts' higher leakage values do not create compatibility issues in standard applications.