BZD27C22P Equivalent & Substitute Parts

Part Overview

The BZD27C22P is a surface mount Zener diode manufactured by Taiwan Semiconductor Corporation, rated at 22.05 V nominal with 1 W maximum power dissipation in a Sub SMA (DO-219AB) package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identification of equivalent and substitute parts is necessary to support existing designs, facilitate production continuity, and enable transition to active product alternatives where applicable.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	22.05	V
Tolerance	±5.66%	—
Power - Max	1	W
Impedance (Max)	15	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 16 V
Voltage - Forward (Vf) (Max) @ If	1.2	V @ 200 mA
Operating Temperature	-55 to 175	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	DO-219AB	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BZD27C22P is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Zener voltage nominal rating (22.05 V or 22 V)
Voltage tolerance (±5% or ±5.66%)
Maximum power dissipation (1 W)
Impedance maximum (15 Ohms)
Reverse leakage current (1 µA @ 16 V)
Forward voltage drop (1 V to 1.2 V @ 200 mA)
Operating temperature range (-55°C to 175°C)

Mechanical Compatibility Criteria:

Surface mount mounting type
Package configuration (Sub SMA DO-219AB or alternative surface mount package)
RoHS3 compliance
Moisture sensitivity level (MSL 1)

Substitute parts are classified into two categories:

Parametric Equivalents (Same Package): Parts maintaining identical electrical specifications and Sub SMA packaging with different manufacturing date codes or tape/reel configurations.
Manufacturer Recommended Substitute (Different Package): BZD27C22PW offers equivalent electrical performance in an alternative SOD-123W surface mount package with active product status.

Parameter Comparison

Part Number	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Vf (Max) @ If	Package	Product Status	Inventory
BZD27C22P	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Not For New Designs	801 Pcs
BZD27C22P M2G	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	1150 Pcs
BZD27C22P MHG	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	1177 Pcs
BZD27C22P MTG	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	1050 Pcs
BZD27C22P R3G	22.05 V	±5%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	7035 Pcs
BZD27C22P RFG	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	1169 Pcs
BZD27C22P RHG	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	851 Pcs
BZD27C22P RQG	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	978 Pcs
BZD27C22P RTG	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	868 Pcs
BZD27C22P RUG	22.05 V	±5.66%	1 W	15 Ω	1.2 V @ 200 mA	DO-219AB (Sub SMA)	Active	975 Pcs
BZD27C22PW	22 V	±5%	1 W	15 Ω	1 V @ 200 mA	SOD-123W	Active	20355 Pcs

Engineering Selection Recommendations

For Existing Designs Requiring Same Package (DO-219AB Sub SMA):

The following active product alternatives maintain identical mechanical and electrical compatibility with the BZD27C22P:

BZD27C22P R3G: Highest inventory availability (7035 Pcs) with ±5% tolerance specification. Recommended for new production orders requiring Sub SMA package retention.
BZD27C22P M2G, MHG, MTG, RFG, RHG, RQG, RTG, RUG: All maintain ±5.66% tolerance and full electrical equivalence. Selection among these variants is determined by supplier availability and manufacturing date code requirements.

For New Designs or Package Flexibility:

BZD27C22PW: Manufacturer-recommended substitute offering active product status with significantly higher inventory (20355 Pcs). Requires PCB layout modification to accommodate SOD-123W package. Electrical specifications are equivalent with ±5% tolerance and 1 V forward voltage drop.

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and -55°C to 175°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can BZD27C22P R3G be used as a direct replacement for BZD27C22P?

A: Yes. BZD27C22P R3G is a parametric equivalent with identical electrical specifications (22.05 V nominal, 1 W power, 15 Ω impedance) and identical Sub SMA package configuration. The primary difference is product status (Active vs. Not For New Designs) and manufacturing date code designation (R3G suffix).

Q: What is the difference between BZD27C22P variants with different suffixes (M2G, MHG, MTG, R3G, RFG, RHG, RQG, RTG, RUG)?

A: The suffixes represent different manufacturing date codes and tape/reel configurations. All variants maintain identical electrical parameters and DO-219AB Sub SMA packaging. Selection is based on supplier availability and inventory status.

Q: Is BZD27C22PW a direct replacement for BZD27C22P?

A: BZD27C22PW is electrically equivalent but uses a different surface mount package (SOD-123W instead of Sub SMA). PCB layout and footprint modifications are required. This substitute is recommended only when package change is acceptable and higher inventory availability is beneficial.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Zener voltage (22.05 V or 22 V nominal), power rating (1 W), impedance (15 Ω maximum), reverse leakage current (1 µA @ 16 V), and forward voltage drop (1 V to 1.2 V @ 200 mA). All listed substitutes meet these criteria.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, consistent with the original BZD27C22P specification.

Q: What is the moisture sensitivity level for these Zener diodes?

A: All parts, including the main part and all substitutes, carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: Why is BZD27C22P marked as "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status. Active alternatives with identical specifications are available. For new designs, BZD27C22P R3G or BZD27C22PW are recommended.

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