DL5266B-TP Equivalent & Substitute Parts

Part Overview

The DL5266B-TP is a Zener Diode rated at 68 V, 500 mW, manufactured by Micro Commercial Co in a Mini MELF surface mount package. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The part is RoHS3 compliant with unlimited moisture sensitivity rating and operates across a temperature range of -65°C to 175°C.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	68 V
Power - Max	500 mW
Tolerance	±5%
Impedance (Max)	230 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 52 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80

Substitute Part Grouping Explanation

Substitution of the DL5266B-TP is determined by the following critical parameters: nominal Zener voltage (68 V), maximum power dissipation (500 mW), voltage tolerance (±5%), impedance (230 Ohms maximum), reverse leakage current (100 nA @ 52 V), forward voltage (1.1 V @ 200 mA), and operating temperature range (-65°C to 175°C). Surface mount mounting type and compatible package configurations are required for mechanical and electrical interchangeability.

Substitute parts are grouped into three categories:

Direct Manufacturer Equivalent: CDLL5266B maintains identical electrical specifications and operating temperature range but differs in package designation (DO-213AB MELF) and RoHS compliance status.

Upgrade Equivalent: 1N5266BUR-1 provides identical electrical performance and temperature range in a DO-213AA package with active product status, though RoHS non-compliant.

Parametric Equivalents: TZM5266B-GS08 and TZM5266B-GS18 deliver matching electrical specifications and temperature range in SOD-80 MiniMELF packaging with RoHS3 compliance and active product status.

Similar Specification Alternative: MMSZ5266B-TP offers reduced operating temperature range (-55°C to 150°C) in SOD-123 packaging with identical power rating and voltage tolerance.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Power (Max)	Tolerance	Zzt (Max)	Leakage @ Vr	Vf (Max) @ If	Temp Range	Package	Product Status	RoHS Status
DL5266B-TP	Micro Commercial Co	68 V	500 mW	±5%	230 Ω	100 nA @ 52 V	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Obsolete	ROHS3 Compliant
CDLL5266B	Microchip Technology	68 V	500 mW	±5%	230 Ω	100 nA @ 52 V	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AB, MELF	Active	RoHS Non-compliant
1N5266BUR-1	Microchip Technology	68 V	500 mW	±5%	230 Ω	100 nA @ 52 V	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AA	Active	RoHS Non-compliant
TZM5266B-GS08	Vishay General Semiconductor	68 V	500 mW	±5%	230 Ω	100 nA @ 52 V	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZM5266B-GS18	Vishay General Semiconductor	68 V	500 mW	±5%	230 Ω	100 nA @ 52 V	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
MMSZ5266B-TP	Micro Commercial Co	68 V	500 mW	±5%	—	—	—	-55°C ~ 150°C	SOD-123	Active	ROHS3 Compliant

Engineering Selection Recommendations

For RoHS3 Compliance with Identical Specifications and Package Compatibility: TZM5266B-GS08 and TZM5266B-GS18 are direct parametric equivalents manufactured by Vishay General Semiconductor. Both parts maintain the complete electrical specification set (68 V, 500 mW, ±5% tolerance, 230 Ω impedance, 100 nA leakage, 1.1 V forward voltage) and full operating temperature range (-65°C to 175°C). Both are active products with RoHS3 compliance. TZM5266B-GS08 offers significantly higher inventory availability (22,800 pcs) compared to TZM5266B-GS18 (926 pcs).

For Active Product Status with Full Electrical Equivalence: 1N5266BUR-1 manufactured by Microchip Technology provides complete electrical and thermal equivalence with active product status. This part maintains all specified electrical parameters and the full -65°C to 175°C operating range. The DO-213AA package is mechanically compatible with Mini MELF applications. RoHS non-compliance must be evaluated against design requirements.

For Direct Manufacturer Equivalent: CDLL5266B from Microchip Technology delivers identical electrical specifications and operating temperature range. Active product status and unlimited moisture sensitivity rating align with the original part. RoHS non-compliance status requires assessment for regulatory requirements.

For Reduced Temperature Range Applications: MMSZ5266B-TP from Micro Commercial Co maintains electrical specifications and RoHS3 compliance but operates within -55°C to 150°C range. This part is suitable for applications not requiring the full -65°C to 175°C thermal envelope. SOD-123 packaging requires PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can TZM5266B-GS08 and TZM5266B-GS18 be used as direct replacements for DL5266B-TP?

A: Yes. Both Vishay parts maintain identical electrical specifications (68 V, 500 mW, ±5%, 230 Ω, 100 nA leakage, 1.1 V forward voltage) and full operating temperature range (-65°C to 175°C). Package designation is DO-213AC/MINI-MELF/SOD-80, matching the original part. Both are RoHS3 compliant and active products.

Q: What is the difference between TZM5266B-GS08 and TZM5266B-GS18?

A: Both parts are electrically and thermally identical. The primary difference is inventory availability: TZM5266B-GS08 has 22,800 pcs in stock, while TZM5266B-GS18 has 926 pcs. The suffix designations reflect different packaging configurations (tape & reel specifications) from Vishay.

Q: Why does MMSZ5266B-TP have a reduced operating temperature range?

A: MMSZ5266B-TP is specified for -55°C to 150°C operation, compared to the original -65°C to 175°C range. This reflects the SOD-123 package thermal characteristics. Selection of this part requires confirmation that the application does not require operation below -55°C or above 150°C.

Q: Are there RoHS compliance differences between substitute options?

A: Yes. TZM5266B-GS08, TZM5266B-GS18, and MMSZ5266B-TP are RoHS3 compliant. CDLL5266B and 1N5266BUR-1 are RoHS non-compliant. Design requirements and regulatory obligations determine which compliance status is acceptable.

Q: Can 1N5266BUR-1 be used in place of DL5266B-TP?

A: Yes, from an electrical and thermal perspective. 1N5266BUR-1 maintains all specified electrical parameters and the full -65°C to 175°C operating range. The DO-213AA package is mechanically compatible with Mini MELF applications. RoHS non-compliance status must be evaluated against design and regulatory requirements.

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

A: Substitution compatibility is determined by: nominal Zener voltage (68 V), maximum power dissipation (500 mW), voltage tolerance (±5%), impedance (230 Ω maximum), reverse leakage current (100 nA @ 52 V), forward voltage (1.1 V @ 200 mA), and operating temperature range (-65°C to 175°C). Surface mount mounting type and compatible package configurations are required for mechanical interchangeability.

Q: Is CDLL5266B a suitable replacement?

A: CDLL5266B from Microchip Technology provides complete electrical and thermal equivalence with active product status. All electrical specifications and the full operating temperature range match the original part. The DO-213AB MELF package is mechanically compatible. RoHS non-compliance status requires evaluation against design requirements.

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