DL5250B-TP Equivalent & Substitute Parts

Part Overview

The DL5250B-TP is a surface mount Zener diode manufactured by Micro Commercial Co, rated for 20 V nominal Zener voltage with 500 mW maximum power dissipation. The device is packaged in a Mini MELF (DO-213AC, SOD-80) configuration suitable for high-density circuit board applications. This part carries an Obsolete product status, making identification of equivalent alternatives necessary for ongoing design support, maintenance, and production continuity in applications requiring 20 V Zener regulation at 500 mW power levels.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	20	V
Tolerance	±5%	%
Power - Max	500	mW
Impedance (Max)	25	Ohms
Current - Reverse Leakage @ Vr	100	nA @ 15 V
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 200 mA
Operating Temperature Range	-65 to 175	°C
Mounting Type	Surface Mount	—
Package / Case	DO-213AC, MINI-MELF, SOD-80	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DL5250B-TP is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

Zener voltage rating of 20 V nominal
Tolerance of ±5%
Maximum power dissipation of 500 mW
Maximum impedance of 25 Ohms
Reverse leakage current of 100 nA @ 15 V
Forward voltage of 1.1 V maximum @ 200 mA

Mechanical & Environmental Specifications:

Surface mount mounting type
Mini MELF package configuration (DO-213AC, SOD-80)
Operating temperature range of -65°C to 175°C
Moisture sensitivity level 1 (Unlimited)

Compliance & Regulatory:

ROHS3 compliance
REACH Unaffected status

Only components matching all specified parameters within the stated tolerances qualify as direct substitutes. No parameter relaxation or derating is applied in this equivalency determination.

Parameter Comparison

Parameter	DL5250B-TP (Main Part)	DL5250B-TP (Substitute)	Match Status
Manufacturer	Micro Commercial Co	Micro Commercial Co	Identical
Voltage - Zener (Nom)	20 V	20 V	Identical
Tolerance	±5%	±5%	Identical
Power - Max	500 mW	500 mW	Identical
Impedance (Max)	25 Ohms	25 Ohms	Identical
Current - Reverse Leakage @ Vr	100 nA @ 15 V	100 nA @ 15 V	Identical
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.1 V @ 200 mA	Identical
Operating Temperature Range	-65°C to 175°C	-65°C to 175°C	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Identical

Engineering Selection Recommendations

The DL5250B-TP carries an Obsolete product status. When sourcing alternatives for this component, direct parametric equivalents must maintain identical electrical specifications, mechanical packaging, and regulatory compliance certifications.

The substitute part DL5250B-TP is identical to the main part across all specified parameters. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

For applications currently using the DL5250B-TP, component selection should prioritize parts with matching Zener voltage (20 V), power rating (500 mW), impedance specification (25 Ohms maximum), and Mini MELF surface mount packaging. Compliance certifications and moisture sensitivity ratings must remain consistent with the original specification.

Frequently Asked Questions (FAQ)

Q: What makes a part a valid substitute for the DL5250B-TP?

A: A valid substitute must match all electrical parameters (20 V Zener voltage, ±5% tolerance, 500 mW power, 25 Ohms maximum impedance, 100 nA reverse leakage, 1.1 V forward voltage), maintain identical surface mount Mini MELF packaging, support the -65°C to 175°C operating temperature range, and carry ROHS3 compliance with moisture sensitivity level 1.

Q: Can I use a different Zener voltage rating as a substitute?

A: No. The Zener voltage rating of 20 V is a critical electrical parameter. Substitutes must maintain this exact nominal voltage rating with ±5% tolerance. Different voltage ratings will not provide equivalent circuit regulation performance.

Q: Is the Mini MELF package interchangeable with other surface mount packages?

A: The Mini MELF package (DO-213AC, SOD-80) is specific to this component specification. Substitutes must use identical packaging to ensure mechanical compatibility with circuit board layouts and assembly processes. Other surface mount packages are not interchangeable.

Q: What is the significance of the 500 mW power rating?

A: The 500 mW maximum power dissipation rating defines the thermal capability of the device. Substitutes must maintain this exact power rating. Using components with lower power ratings may result in thermal failure under specified operating conditions.

Q: Does the ±5% tolerance apply to all substitute parts?

A: Yes. The ±5% tolerance on Zener voltage is a critical specification for circuit regulation accuracy. All substitute parts must maintain this tolerance band to ensure consistent circuit performance across the specified operating range.

Q: Why is ROHS3 compliance important for substitution?

A: ROHS3 compliance indicates the component meets current regulatory requirements for hazardous substance restrictions in electronic equipment. Substitutes must maintain this compliance status to ensure compatibility with modern manufacturing and end-use regulations.

Q: What does moisture sensitivity level 1 mean for handling?

A: Moisture sensitivity level 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. Substitutes with different moisture sensitivity levels may require specialized storage conditions and handling procedures.

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