DZ2S056M0L Zener Diode Equivalent & Substitute Parts

Part Overview

The DZ2S056M0L is a 5.6 V, 150 mW surface mount zener diode manufactured by Panasonic Electronic Components in the SSMini2-F5-B package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives. The device operates as a voltage regulation and protection component in surface mount applications requiring precise 5.6 V zener voltage with ±2.5% tolerance and minimal power dissipation.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.6	V
Tolerance	±2.5%	-
Power - Max	150	mW
Impedance (Max)	40	Ohms
Current - Reverse Leakage @ Vr	500 nA @ 2.5 V	-
Voltage - Forward (Vf) (Max) @ If	1 V @ 10 mA	-
Mounting Type	Surface Mount	-
Package / Case	SC-79, SOD-523	-
RoHS Status	RoHS Compliant	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the DZ2S056M0L is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage nominal value: 5.6 V (tolerance range 5.46 V to 5.74 V at ±2.5%)
Package compatibility: SC-79 or SOD-523 surface mount packages
Mounting type: Surface mount
RoHS compliance status

Secondary Compatibility Factors:

Power dissipation rating: 150 mW minimum (higher ratings acceptable for derating applications)
Impedance characteristics: Maximum 40 Ohms (higher impedance acceptable within circuit tolerance)
Reverse leakage current: 500 nA @ 2.5 V (lower leakage acceptable)
Forward voltage: 1 V @ 10 mA (lower forward voltage acceptable)

Substitute parts are grouped into two categories based on power rating: 150 mW direct equivalents and 500 mW higher-power alternatives suitable for applications with thermal margin requirements.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Package	Status	RoHS
DZ2S056M0L	Panasonic	5.6 V	±2.5%	150 mW	40 Ω	SOD-523	Discontinued	Compliant
EDZVT2R5.6B	Rohm Semiconductor	5.6 V	±2%	150 mW	200 Ω	SOD-523	Active	ROHS3
EDZVFHT2R5.6B	Rohm Semiconductor	5.61 V	±2.13%	150 mW	60 Ω	SOD-523	Active	ROHS3
BZX584C5V6_R1_00001	Panjit International	5.6 V	±5%	200 mW	40 Ω	SOD-523	Active	ROHS3
MM5Z5V6ST1G	onsemi	5.61 V	±2%	500 mW	40 Ω	SOD-523	Active	ROHS3
SZMM5Z5V6ST1G	onsemi	5.6 V	±2%	500 mW	40 Ω	SOD-523	Active	ROHS3
SZMM5Z5V6T1G	onsemi	5.6 V	±7%	500 mW	40 Ω	SOD-523	Active	ROHS3

Engineering Selection Recommendations

Direct Equivalents (150 mW Power Rating):

EDZVT2R5.6B (Rohm Semiconductor) provides the closest functional match to the DZ2S056M0L. This part maintains identical 5.6 V nominal zener voltage, 150 mW power rating, and SOD-523 package compatibility. The ±2% tolerance is tighter than the original ±2.5%, providing superior voltage regulation precision. The part is AEC-Q101 qualified and ROHS3 compliant with active product status and high inventory availability (88,598 units).

EDZVFHT2R5.6B (Rohm Semiconductor) offers equivalent 150 mW power rating with 5.61 V nominal zener voltage within acceptable tolerance range. This automotive-grade part (AEC-Q101 qualified) provides enhanced reliability for demanding applications. Higher impedance (60 Ω vs. 40 Ω) may affect circuit performance in precision applications.

Higher Power Alternatives (500 mW Rating):

SZMM5Z5V6ST1G (onsemi) matches the original 5.6 V nominal voltage with ±2% tolerance and provides 500 mW power dissipation capability. AEC-Q101 qualification and automotive-grade designation support use in regulated environments. The increased power rating enables thermal margin in applications approaching the 150 mW limit.

MM5Z5V6ST1G (onsemi) delivers 5.61 V nominal zener voltage with ±2% tolerance and 500 mW power rating. AEC-Q101 qualification and automotive-grade status ensure compliance with stringent reliability requirements. Impedance and forward voltage characteristics match the original specification.

SZMM5Z5V6T1G (onsemi) provides 500 mW power rating with 5.6 V nominal voltage. The ±7% tolerance represents the widest deviation among active substitutes and is suitable only for applications with relaxed voltage regulation requirements.

Secondary Alternative:

BZX584C5V6_R1_00001 (Panjit International) maintains 5.6 V nominal voltage with 200 mW power rating, exceeding the original 150 mW specification. The ±5% tolerance is wider than the original ±2.5% and may not satisfy precision voltage regulation circuits. Active product status and high inventory (46,199 units) support supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can EDZVT2R5.6B directly replace DZ2S056M0L without circuit modification?

A: Yes. Both parts share identical 5.6 V nominal zener voltage, 150 mW power rating, and SOD-523 package. The ±2% tolerance of EDZVT2R5.6B is tighter than the original ±2.5%, ensuring compatible voltage regulation performance. No circuit modifications are required.

Q: What is the difference between the 150 mW and 500 mW substitute options?

A: The 150 mW substitutes (EDZVT2R5.6B, EDZVFHT2R5.6B) match the original power dissipation specification exactly. The 500 mW alternatives (MM5Z5V6ST1G, SZMM5Z5V6ST1G, SZMM5Z5V6T1G) provide higher thermal capacity and are suitable for applications requiring additional power margin or operating near maximum dissipation limits. Both categories use identical SOD-523 packages and are pin-compatible.

Q: Why do some substitutes have 5.61 V nominal voltage instead of 5.6 V?

A: The 5.61 V nominal voltage falls within the acceptable tolerance range of the original 5.6 V ±2.5% specification (5.46 V to 5.74 V). Rohm Semiconductor and onsemi manufacturing processes produce zener diodes with 5.61 V nominal values that meet circuit requirements for 5.6 V regulation. Tolerance specifications ensure voltage regulation performance remains within design parameters.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. The original DZ2S056M0L is RoHS Compliant. All alternatives meet or exceed the original environmental compliance status.

Q: What is the significance of AEC-Q101 qualification on some substitutes?

A: AEC-Q101 qualification indicates automotive-grade reliability testing and qualification. Parts bearing this designation (EDZVFHT2R5.6B, MM5Z5V6ST1G, SZMM5Z5V6ST1G, SZMM5Z5V6T1G) undergo enhanced stress testing and are suitable for automotive and other mission-critical applications. Non-qualified parts remain suitable for general industrial and consumer applications.

Q: Can SZMM5Z5V6T1G with ±7% tolerance replace the original ±2.5% part?

A: SZMM5Z5V6T1G is suitable only for applications with relaxed voltage regulation requirements. The ±7% tolerance produces a voltage range of 5.21 V to 6.03 V, significantly wider than the original ±2.5% range (5.46 V to 5.74 V). Use this part only when circuit design tolerates this wider voltage variation.

Q: What packaging considerations apply to these substitutes?

A: All substitute parts use SC-79 or SOD-523 surface mount packages, identical to the original DZ2S056M0L. Physical dimensions and land patterns are compatible. Moisture sensitivity level remains MSL 1 (Unlimited) across all alternatives, requiring no special handling modifications.

Q: Which substitute offers the best balance of availability and specification match?

A: EDZVT2R5.6B (Rohm Semiconductor) provides optimal specification alignment with 88,598 units in stock. This part matches the original 5.6 V nominal voltage and 150 mW power rating while offering tighter ±2% tolerance. Active product status ensures long-term supply continuity.

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