BZD27C20P RHG Equivalent & Substitute Parts

Part Overview

The BZD27C20P RHG is a Zener diode rated at 20 V nominal voltage with 1 W maximum power dissipation, manufactured by Taiwan Semiconductor Corporation. This surface mount component operates across the temperature range of -55°C to 175°C and is housed in a DO-219AB (Sub SMA) package. The device is ROHS3 compliant and maintains an active product status. Substitute parts are identified to address inventory availability, extended temperature ranges, automotive qualification requirements, or alternative sourcing from established manufacturers within the same electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	20	V
Power - Max	1	W
Tolerance	±6%	-
Impedance (Max)	15	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 15 V
Voltage - Forward (Vf) (Max) @ If	1.2	V @ 200 mA
Operating Temperature	-55 to 175	°C
Package / Case	DO-219AB	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the BZD27C20P RHG is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Zener voltage (Nom): 20 V
Impedance (Max): 15 Ohms
Reverse leakage current: 1 µA @ 15 V
Forward voltage: 1.2 V @ 200 mA

Mechanical Equivalence Requirements:

Package / Case: DO-219AB
Mounting Type: Surface Mount

Compliance Requirements:

RoHS3 Compliant
REACH Unaffected
ECCN: EAR99

The substitute parts identified (BZD27C20P-E3-08, BZD27C20P-HE3-08, BZD27C20P-M3-08) maintain identical electrical characteristics and package specifications. Variations in maximum power rating (800 mW versus 1 W) and operating temperature ranges represent design trade-offs that do not preclude functional substitution in applications where the lower power rating and extended temperature capability are acceptable.

Parameter Comparison

Parameter	BZD27C20P RHG	BZD27C20P-E3-08	BZD27C20P-HE3-08	BZD27C20P-M3-08
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Voltage - Zener (Nom)	20 V	20 V	20 V	20 V
Power - Max	1 W	800 mW	800 mW	800 mW
Impedance (Max)	15 Ohms	15 Ohms	15 Ohms	15 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 15 V	1 µA @ 15 V	1 µA @ 15 V	1 µA @ 15 V
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.2 V @ 200 mA	1.2 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature	-55°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Automotive Qualification	-	-	AEC-Q101	-

Engineering Selection Recommendations

BZD27C20P-E3-08 (Vishay): This substitute maintains full electrical equivalence with identical impedance, leakage current, and forward voltage characteristics. The 800 mW power rating is suitable for applications where the original 1 W specification provides design margin. Extended operating temperature range (-65°C to 175°C) offers improved low-temperature performance. ROHS3 compliance and active product status support long-term availability.

BZD27C20P-HE3-08 (Vishay): This variant is functionally equivalent to BZD27C20P-E3-08 with the addition of AEC-Q101 automotive qualification. Selection of this part is appropriate for automotive applications requiring formal qualification documentation. Electrical and thermal characteristics remain identical to the standard variant.

BZD27C20P-M3-08 (Vishay): This substitute provides equivalent electrical performance with extended temperature range. The BZD27-M series designation indicates a specific manufacturing variant. Electrical parameters, package specifications, and compliance certifications are identical to other Vishay substitutes.

All three substitute parts are manufactured by Vishay General Semiconductor - Diodes Division, an established supplier with high inventory levels (26,983 to 30,645 units in stock). Selection among these substitutes depends on application-specific requirements for automotive qualification and temperature operating range.

Frequently Asked Questions (FAQ)

Q: Can BZD27C20P-E3-08 replace BZD27C20P RHG in all applications?

A: The BZD27C20P-E3-08 maintains identical electrical characteristics (20 V zener voltage, 15 Ohms impedance, 1 µA reverse leakage, 1.2 V forward voltage) and uses the same DO-219AB package. The 800 mW power rating is lower than the original 1 W specification. Substitution is valid where the application power dissipation does not exceed 800 mW. The extended temperature range (-65°C to 175°C) provides additional operating margin at low temperatures.

Q: What is the difference between BZD27C20P-HE3-08 and BZD27C20P-E3-08?

A: Both parts are electrically and mechanically identical. BZD27C20P-HE3-08 carries AEC-Q101 automotive qualification, making it suitable for automotive applications requiring formal qualification documentation. Selection depends on whether automotive qualification is a design requirement.

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

A: All substitute parts use DO-219AB (SMF) package in Tape & Reel (TR) format. The original BZD27C20P RHG uses Sub SMA packaging designation, which is equivalent to DO-219AB. Surface mount compatibility is maintained across all parts.

Q: Do the substitute parts meet the same compliance standards?

A: All substitute parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99, matching the original part's compliance profile. Moisture sensitivity level (MSL) is 1 (Unlimited) for all parts.

Q: What is the significance of the power rating difference (1 W versus 800 mW)?

A: The 800 mW rating on substitute parts represents a lower maximum power dissipation specification. In applications where steady-state or peak power dissipation remains below 800 mW, the substitute parts operate within specification. Applications requiring the full 1 W capability must use the original BZD27C20P RHG or confirm that substitute parts meet thermal requirements through detailed power analysis.

Q: Can BZD27C20P-M3-08 be used interchangeably with BZD27C20P-E3-08?

A: Yes. Both parts share identical electrical specifications, impedance, leakage current, forward voltage, and DO-219AB package. The BZD27-M series designation indicates a manufacturing variant but does not affect functional equivalence. Selection between these parts may be based on inventory availability or supplier preference.

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