GDZ8V2B-E3-08 Equivalent & Substitute Parts

Part Overview

The GDZ8V2B-E3-08 is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 8.2 V nominal with 200 mW power dissipation in SOD-323 surface mount packaging. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The part is supplied in Tape & Reel (TR) packaging format with 860 pieces currently in stock inventory.

Equivalent and substitute parts are identified when design requirements permit tolerance variations, power rating adjustments, or alternative manufacturer sourcing while maintaining the core electrical specifications of 8.2 V zener voltage and SOD-323 package form factor.

Key Parameters

Parameter	GDZ8V2B-E3-08 Specification
Voltage - Zener (Nom)	8.2 V
Tolerance	±2%
Power - Max	200 mW
Impedance (Max)	30 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 5 V
Operating Temperature Range	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	SC-76, SOD-323
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the GDZ8V2B-E3-08 is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 8.2 V nominal
Package type: SOD-323 (SC-76)
Mounting: Surface Mount
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1 or equivalent

Secondary Variation Parameters:

Tolerance: ±2% to ±6% acceptable range
Power rating: 200 mW minimum (250 mW, 300 mW, 320 mW acceptable as higher ratings)
Impedance: 8 to 30 Ohms
Reverse leakage current: 100 nA to 700 nA @ specified voltage
Operating temperature: -55°C to -65°C minimum acceptable

Substitute parts are grouped into three categories: Parametric Equivalents (identical electrical specifications with different packaging options), Direct Manufacturer Alternatives (different manufacturer, matching core specifications), and MFR Recommended Substitutes (manufacturer-approved alternatives with minor parameter variations).

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Impedance (Max)	Temp Range	Grade	Inventory
GDZ8V2B-E3-08	Vishay	8.2 V	±2%	200 mW	30 Ohms	-55°C ~ 150°C	Standard	860 Pcs
GDZ8V2B-HE3-08	Vishay	8.2 V	±2%	200 mW	30 Ohms	-55°C ~ 150°C	Automotive (AEC-Q101)	65200 Pcs
UDZ8V2B-7	Diodes Inc.	8.2 V	±2%	200 mW	30 Ohms	-65°C ~ 150°C	Standard	23400 Pcs
BZT52C8V2SQ-7-F	Diodes Inc.	8.2 V	±6.1%	200 mW	15 Ohms	-65°C ~ 150°C	Automotive (AEC-Q101)	670 Pcs
CMDZ5237B TR PBFREE	Central Semiconductor	8.2 V	±5%	250 mW	8 Ohms	-65°C ~ 150°C	Standard	6694 Pcs
DDZ9694S-7	Diodes Inc.	8.2 V	±5%	200 mW	Not specified	-65°C ~ 150°C	Standard	2997 Pcs
MM3Z8V2T1G	onsemi	8.2 V	±6%	300 mW	15 Ohms	-65°C ~ 150°C	Standard	20100 Pcs
PZU8.2B3A,115	Nexperia	8.2 V	±2%	320 mW	10 Ohms	-55°C ~ 150°C	Standard	1323 Pcs
SZMM3Z8V2ST1G	onsemi	8.2 V	±2%	300 mW	15 Ohms	-65°C ~ 150°C	Automotive (AEC-Q101)	86300 Pcs
SZMM3Z8V2T1G	onsemi	8.2 V	±6%	300 mW	15 Ohms	-65°C ~ 150°C	Automotive (AEC-Q101)	587400 Pcs

Engineering Selection Recommendations

Parametric Equivalent - Highest Compatibility: GDZ8V2B-HE3-08 (Vishay) provides identical electrical specifications to the primary part with automotive-grade qualification (AEC-Q101). This part is suitable for applications requiring enhanced reliability standards. Inventory availability is significantly higher at 65,200 pieces.

Direct Manufacturer Alternative - Standard Applications: UDZ8V2B-7 (Diodes Incorporated) matches all core electrical parameters with extended minimum operating temperature (-65°C versus -55°C). This part is appropriate for general-purpose applications with no automotive requirements. Inventory level of 23,400 pieces supports production needs.

Higher Power Rating Options: SZMM3Z8V2T1G (onsemi) offers 300 mW power rating with automotive qualification and ±6% tolerance. This part provides design margin for applications with thermal constraints. Exceptional inventory availability of 587,400 pieces ensures supply continuity. SZMM3Z8V2ST1G provides identical power rating with tighter ±2% tolerance and automotive qualification.

Nexperia Alternative: PZU8.2B3A,115 (Nexperia) delivers 320 mW power rating with ±2% tolerance matching the primary part's accuracy specification. This option is suitable for designs requiring maximum power dissipation capability within the 8.2 V zener class.

Tolerance-Relaxed Options: BZT52C8V2SQ-7-F (Diodes Incorporated) and CMDZ5237B (Central Semiconductor) accept ±6.1% and ±5% tolerance respectively. These parts are applicable to non-critical voltage regulation circuits where tighter tolerance is not required.

Frequently Asked Questions (FAQ)

Q: Can GDZ8V2B-E3-08 be directly replaced with GDZ8V2B-HE3-08? A: Yes. Both parts share identical electrical specifications (8.2 V ±2%, 200 mW, SOD-323). The HE3-08 variant includes automotive-grade qualification (AEC-Q101) and is supplied in alternative packaging format (Cut Tape & Digi-Reel). Functional compatibility is complete.

Q: What is the difference between ±2% and ±6% tolerance zener diodes? A: Tolerance defines the acceptable deviation from nominal zener voltage. ±2% tolerance (GDZ8V2B-E3-08) restricts zener voltage to 8.036 V - 8.364 V range. ±6% tolerance (SZMM3Z8V2T1G) allows 7.708 V - 8.692 V range. Applications requiring precise voltage regulation must use tighter tolerance parts.

Q: Is higher power rating (300 mW vs 200 mW) a direct substitute? A: Higher power rating is a valid substitute when circuit design permits. MM3Z8V2T1G and SZMM3Z8V2T1G (300 mW) can replace GDZ8V2B-E3-08 (200 mW) in any application. The higher rating provides thermal margin and does not degrade circuit performance. Lower power rating substitutes are not acceptable.

Q: What does AEC-Q101 automotive qualification mean? A: AEC-Q101 is an automotive industry standard qualification for discrete semiconductors. Parts bearing this qualification (GDZ8V2B-HE3-08, BZT52C8V2SQ-7-F, SZMM3Z8V2ST1G, SZMM3Z8V2T1G) meet enhanced reliability, temperature cycling, and quality requirements. These parts are mandatory for automotive applications.

Q: Can I use a substitute part with extended temperature range (-65°C minimum vs -55°C)? A: Yes. Extended temperature range is a superset capability. UDZ8V2B-7 and all onsemi parts rated to -65°C are fully compatible with applications specified for -55°C minimum. The extended range provides additional design margin for extreme environment applications.

Q: What is the significance of impedance (Zzt) parameter variation? A: Impedance affects dynamic zener voltage regulation under load transients. GDZ8V2B-E3-08 specifies 30 Ohms maximum impedance. Lower impedance values (8-15 Ohms in substitute parts) provide superior transient response and tighter voltage regulation. Higher impedance is not acceptable as a substitute.

Q: Are all listed parts ROHS3 compliant? A: Yes. All substitute parts listed carry ROHS3 compliance certification. All parts are also REACH Unaffected and classified as EAR99 for export control purposes.

Q: Which substitute offers best inventory availability? A: SZMM3Z8V2T1G (onsemi) provides maximum inventory at 587,400 pieces. This part combines high availability with automotive qualification and 300 mW power rating, making it suitable for high-volume production requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message