DL5262B-TP Equivalent & Substitute Parts

Part Overview

The DL5262B-TP is a Zener diode rated at 51 V, 500 mW, manufactured by Micro Commercial Co in a Mini MELF surface mount package. This component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for applications utilizing this diode specification.

Key Parameters

Parameter	Value
Voltage - Zener (Nom)	51 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max)	125 Ohms
Current - Reverse Leakage @ Vr	100 nA @ 39 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
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the DL5262B-TP is determined by strict electrical and mechanical parameter matching. The critical parameters that define substitutability are:

Electrical Parameters:

Zener voltage: 51 V nominal
Tolerance: ±5% (allows for equivalent tolerance specifications)
Power dissipation: 500 mW
Impedance: 125 Ohms maximum
Reverse leakage current: 100 nA @ 39 V
Forward voltage: 1.1 V @ 200 mA
Operating temperature range: -65°C ~ 175°C

Mechanical Parameters:

Mounting type: Surface Mount
Package compatibility: DO-213AC, MINI-MELF, SOD-80 footprints

Substitute parts are grouped into the following categories:

Similar Manufacturer Part (Package Variant): MMSZ5262B-TP differs in package type (SOD-123) and forward voltage specification (900 mV @ 10 mA), with a narrower operating temperature range (-55°C ~ 150°C). This part maintains electrical equivalence for the primary zener parameters but operates within reduced temperature limits.

Direct Manufacturer Equivalent: CDLL5262B from Microchip Technology provides identical electrical specifications in DO-213AB MELF packaging with full temperature range support (-65°C ~ 175°C). RoHS compliance status differs (non-compliant vs. ROHS3 compliant).

Upgrade Part: 1N5262BUR-1 from Microchip Technology offers identical electrical and thermal specifications in DO-213AA packaging with active product status and full temperature range support.

Parametric Equivalents (Vishay General Semiconductor): TZM5262B-GS08, TZM5262B-GS18, TZMB51-GS08, TZMB51-GS18, TZMC51-GS08, TZMC51-GS18, and TZMC51-M-08 all maintain the 51 V, 500 mW specification with SOD-80 MiniMELF packaging. Variations include tolerance (±2% vs. ±5%), forward voltage (1.5 V @ 200 mA vs. 1.1 V @ 200 mA), and automotive qualification (AEC-Q101).

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Zzt (Max)	Vf (Max) @ If	Temp Range	Package	Product Status	RoHS Status
DL5262B-TP	Micro Commercial Co	51 V	±5%	500 mW	125 Ω	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Obsolete	ROHS3 Compliant
MMSZ5262B-TP	Micro Commercial Co	51 V	±5%	500 mW	125 Ω	900 mV @ 10 mA	-55°C ~ 150°C	SOD-123	Active	ROHS3 Compliant
CDLL5262B	Microchip Technology	51 V	±5%	Not specified	125 Ω	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AB, MELF	Active	RoHS non-compliant
1N5262BUR-1	Microchip Technology	51 V	±5%	500 mW	125 Ω	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AA	Active	RoHS non-compliant
TZM5262B-GS08	Vishay General Semiconductor	51 V	±5%	500 mW	125 Ω	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZM5262B-GS18	Vishay General Semiconductor	51 V	±5%	500 mW	125 Ω	1.1 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMB51-GS08	Vishay General Semiconductor	51 V	±2%	500 mW	125 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMB51-GS18	Vishay General Semiconductor	51 V	±2%	500 mW	125 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMC51-GS08	Vishay General Semiconductor	51 V	±5%	500 mW	125 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMC51-GS18	Vishay General Semiconductor	51 V	±5%	500 mW	125 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant
TZMC51-M-08	Vishay General Semiconductor	51 V	±5%	500 mW	125 Ω	1.5 V @ 200 mA	-65°C ~ 175°C	DO-213AC, MINI-MELF, SOD-80	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Electrical and Thermal Equivalence with Identical Package:

TZM5262B-GS08 and TZM5262B-GS18 from Vishay General Semiconductor provide the closest functional replacement for DL5262B-TP. Both parts maintain identical zener voltage (51 V), tolerance (±5%), power rating (500 mW), impedance (125 Ohms), forward voltage (1.1 V @ 200 mA), and operating temperature range (-65°C ~ 175°C). The packaging is identical (DO-213AC, MINI-MELF, SOD-80). Both parts are active products with ROHS3 compliance. The difference between GS08 and GS18 variants relates to tape reel specifications and inventory availability (13,386 pcs vs. 700 pcs respectively).

For Active Product Status with Full Temperature Support:

1N5262BUR-1 from Microchip Technology offers identical electrical specifications (51 V, ±5%, 500 mW, 1.1 V @ 200 mA, -65°C ~ 175°C) in DO-213AA packaging. This part is active and maintains full backward compatibility with the original specification. RoHS compliance differs (non-compliant vs. ROHS3 compliant on the original part).

For Automotive-Qualified Applications:

TZMC51-GS08, TZMC51-GS18, and TZMC51-M-08 from Vishay General Semiconductor provide automotive-grade alternatives with AEC-Q101 qualification. These parts maintain the 51 V, 500 mW specification with ±5% tolerance and full temperature range support. Forward voltage is specified at 1.5 V @ 200 mA (higher than the original 1.1 V @ 200 mA). TZMB51-GS08 and TZMB51-GS18 offer tighter tolerance (±2%) with automotive qualification, suitable for applications requiring enhanced voltage accuracy.

For Reduced Temperature Range Applications:

MMSZ5262B-TP from Micro Commercial Co maintains the same manufacturer as the original part with active product status. This part operates within -55°C ~ 150°C and uses SOD-123 packaging. Forward voltage is specified at 900 mV @ 10 mA. This option is suitable only for applications that do not require the full -65°C ~ 175°C temperature range of the original part.

For MELF Package Compatibility:

CDLL5262B from Microchip Technology provides DO-213AB MELF packaging with identical electrical specifications (51 V, ±5%, 1.1 V @ 200 mA, -65°C ~ 175°C). This part is active but RoHS non-compliant.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5262B-TP be used as a direct replacement for DL5262B-TP?

A: MMSZ5262B-TP is electrically equivalent for the primary zener parameters (51 V, 500 mW, ±5%) but differs in two critical aspects: package type (SOD-123 vs. Mini MELF) and operating temperature range (-55°C ~ 150°C vs. -65°C ~ 175°C). Use this part only if your PCB layout accommodates SOD-123 footprint and your application does not require operation below -55°C or above 150°C.

Q: What is the difference between TZM5262B-GS08 and TZMC51-GS08?

A: Both parts are 51 V, 500 mW zener diodes in SOD-80 MiniMELF packaging with identical operating temperature range (-65°C ~ 175°C) and ROHS3 compliance. The primary difference is forward voltage specification: TZM5262B-GS08 specifies 1.1 V @ 200 mA (matching the original DL5262B-TP), while TZMC51-GS08 specifies 1.5 V @ 200 mA. Both are automotive-qualified (AEC-Q101). Select based on your circuit's forward voltage requirements.

Q: Are the automotive-qualified parts (TZMB51, TZMC51) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts meet or exceed the electrical and reliability specifications required for non-automotive applications. The AEC-Q101 qualification indicates enhanced quality and testing standards. These parts are fully compatible with non-automotive designs and offer superior reliability margins.

Q: What does the GS08 and GS18 designation mean in Vishay part numbers?

A: The GS08 and GS18 designations refer to different tape reel configurations for surface mount packaging. Both variants are electrically identical. GS08 and GS18 differ only in tape specifications and packaging format. Select based on your assembly equipment compatibility and inventory requirements.

Q: Can I use 1N5262BUR-1 if my design requires ROHS3 compliance?

A: 1N5262BUR-1 is RoHS non-compliant. If your design or end-product application requires ROHS3 compliance, select from the Vishay alternatives (TZM5262B-GS08, TZM5262B-GS18, TZMB51-GS08, TZMB51-GS18, TZMC51-GS08, TZMC51-GS18, or TZMC51-M-08), which are all ROHS3 compliant.

Q: Is the higher forward voltage (1.5 V) of TZMC51 and TZMB51 parts a concern?

A: Forward voltage specification applies to forward-biased operation. In typical zener diode applications, the diode operates in reverse-bias (zener) mode. The forward voltage difference (1.1 V vs. 1.5 V @ 200 mA) is relevant only if your circuit includes forward-bias current paths. For standard zener regulation applications, this difference is not a functional concern. Verify your circuit topology to confirm whether forward voltage specifications impact your design.

Q: What inventory levels should I consider for long-term supply?

A: TZMC51-GS08 has the highest inventory (52,900 pcs), followed by TZM5262B-GS08 (13,386 pcs). If supply continuity is critical, TZMC51-GS08 provides the strongest long-term availability. All listed alternatives are active products, ensuring continued manufacturing support.

Q: Can I mix different substitute parts in the same production run?

A: All listed substitute parts are electrically equivalent within the specified parameters. However, mixing different manufacturers or part numbers in the same production run introduces traceability and quality documentation complexity. Standardize on a single substitute part number for each production batch to maintain consistent documentation and supply chain control.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message