DL5230B-TP Equivalent & Substitute Parts

Part Overview

The DL5230B-TP is a Zener diode rated at 4.7 V, 500 mW, manufactured by Micro Commercial Co in a Mini MELF (DO-213AC, SOD-80) surface mount package. This component is classified as obsolete, though 1057 pieces remain in stock. The part operates across a temperature range of -65°C to 175°C and is ROHS3 compliant with unlimited moisture sensitivity rating.

Identification of equivalent and substitute parts is necessary due to the obsolete product status of the DL5230B-TP. Active alternatives with identical or compatible electrical specifications and surface mount packaging are available from multiple manufacturers, enabling continued circuit design and production support.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	4.7	V
Power - Maximum	500	mW
Tolerance	±5%	-
Impedance (Maximum)	19	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 2 V
Voltage - Forward (Maximum) @ 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	-

Substitute Part Grouping Explanation

Substitution of the DL5230B-TP is determined by the following critical parameters:

Electrical Specifications:

Zener voltage: 4.7 V nominal
Power dissipation: 500 mW maximum
Voltage tolerance: ±5% (where specified)
Impedance: 19 Ohms maximum (primary specification) or 25 Ohms (acceptable variance)
Reverse leakage current: 5 µA @ 2 V or 5 µA @ 1 V
Forward voltage: 1.1 V @ 200 mA (primary) or 1.5 V @ 200 mA (acceptable variance)

Mechanical and Environmental Specifications:

Mounting type: Surface Mount
Package compatibility: DO-213AC, MINI-MELF, SOD-80 (same physical form factor)
Operating temperature: -65°C to 175°C (minimum requirement)
Compliance: ROHS3, REACH Unaffected, EAR99

Substitute parts are grouped into two categories:

Category 1 - Direct Electrical Match (Impedance 19 Ohms): Parts with identical impedance specification (19 Ohms) and matching forward voltage characteristics (1.1 V @ 200 mA). These provide the closest electrical performance match.

Category 2 - Compatible Electrical Match (Impedance 25 Ohms): Parts with slightly higher impedance (25 Ohms) and forward voltage of 1.5 V @ 200 mA. These remain functionally compatible within the 4.7 V Zener regulation application while maintaining all other critical parameters.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Power (mW)	Tolerance	Zzt (Ohms)	Vf @ If (V @ mA)	Temp Range (°C)	Package	Status
DL5230B-TP	Micro Commercial Co	4.7	500	±5%	19	1.1 @ 200	-65 to 175	DO-213AC	Obsolete
MMSZ5230B-TP	Micro Commercial Co	4.7	500	±5%	19	0.9 @ 10	-55 to 150	SOD-123	Active
1N5230BUR	Microchip Technology	4.7	500	±5%	19	1.1 @ 200	-65 to 175	DO-213AA	Active
1N5230BUR-1	Microchip Technology	4.7	500	±5%	19	1.5 @ 200	-65 to 175	DO-213AA	Active
TLZ4V7-GS08	Vishay General Semiconductor	4.7	500	-	25	1.5 @ 200	-65 to 175	SOD-80	Active
TLZ4V7-GS18	Vishay General Semiconductor	4.7	500	-	25	1.5 @ 200	-65 to 175	SOD-80	Active
TLZ4V7B-GS08	Vishay General Semiconductor	4.7	500	-	25	1.5 @ 200	-65 to 175	SOD-80	Active
TLZ4V7B-GS18	Vishay General Semiconductor	4.7	500	-	25	1.5 @ 200	-65 to 175	SOD-80	Active
TLZ4V7C-GS08	Vishay General Semiconductor	4.7	500	-	25	1.5 @ 200	-65 to 175	SOD-80	Active
TLZ4V7C-GS18	Vishay General Semiconductor	4.7	500	-	25	1.5 @ 200	-65 to 175	SOD-80	Active
TZM5230B-GS08	Vishay General Semiconductor	4.7	500	±5%	19	1.1 @ 200	-65 to 175	SOD-80	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Electrical Equivalent:

The TZM5230B-GS08 (Vishay General Semiconductor) is the optimal substitute for the DL5230B-TP. This part maintains identical electrical specifications: 4.7 V Zener voltage, 500 mW power rating, ±5% tolerance, 19 Ohms impedance, and 1.1 V forward voltage at 200 mA. The operating temperature range (-65°C to 175°C) matches the original specification. The part is active with 16,910 units in stock. Both parts share the same physical form factor (DO-213AC, MINI-MELF, SOD-80). ROHS3 compliance and unlimited moisture sensitivity rating are maintained.

Secondary Recommendation - Compatible Alternative (Same Package):

The 1N5230BUR (Microchip Technology) provides an active alternative with identical electrical specifications and operating temperature range. This part is available in DO-213AA package with 793 units in stock. The impedance (19 Ohms) and forward voltage (1.1 V @ 200 mA) match the original specification exactly.

Alternative for Different Package Requirements:

The MMSZ5230B-TP (Micro Commercial Co) is an active variant in SOD-123 package with identical electrical specifications (4.7 V, 500 mW, ±5%, 19 Ohms). This option is suitable only if circuit board layout permits SOD-123 package substitution. Operating temperature range is reduced to -55°C to 150°C.

Acceptable Substitutes with Impedance Variance:

The Vishay TLZ series (TLZ4V7-GS08, TLZ4V7-GS18, TLZ4V7B-GS08, TLZ4V7B-GS18, TLZ4V7C-GS08, TLZ4V7C-GS18) are active alternatives with 4.7 V Zener voltage and 500 mW power rating. These parts feature 25 Ohms impedance (versus 19 Ohms) and 1.5 V forward voltage at 200 mA (versus 1.1 V). All maintain the -65°C to 175°C operating range and SOD-80 package compatibility. These substitutes are acceptable where impedance tolerance and forward voltage variance do not impact circuit performance.

All recommended substitutes maintain ROHS3 compliance, REACH Unaffected status, and EAR99 classification.

Frequently Asked Questions (FAQ)

Q: Can the MMSZ5230B-TP replace the DL5230B-TP in all applications?

A: The MMSZ5230B-TP has identical electrical specifications but operates at a reduced temperature range (-55°C to 150°C versus -65°C to 175°C). It is suitable only for applications where the full temperature range of the original part is not required. Additionally, the SOD-123 package differs from the DO-213AC package, requiring circuit board layout verification.

Q: What is the difference between the 1N5230BUR and 1N5230BUR-1?

A: Both parts are 4.7 V, 500 mW Zener diodes from Microchip Technology in DO-213AA package. The 1N5230BUR has forward voltage of 1.1 V @ 200 mA and reverse leakage of 5 µA @ 2 V. The 1N5230BUR-1 has forward voltage of 1.5 V @ 200 mA and reverse leakage of 50 µA @ 2 V. The 1N5230BUR provides closer electrical matching to the original DL5230B-TP.

Q: Why do the Vishay TLZ series parts have 25 Ohms impedance instead of 19 Ohms?

A: The TLZ series represents a different product line within Vishay's Zener diode portfolio. While the impedance specification is higher (25 Ohms versus 19 Ohms), the parts maintain the same 4.7 V Zener voltage and 500 mW power rating. The impedance variance is acceptable in most voltage regulation and protection applications. Circuit-specific analysis is required to confirm suitability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and REACH Unaffected status, matching the environmental compliance of the original DL5230B-TP.

Q: What is the significance of the packaging variants (GS08, GS18) in the Vishay TLZ series?

A: The GS08 and GS18 designations indicate different tape and reel packaging configurations for automated assembly. GS08 and GS18 refer to reel sizes or tape specifications. Both variants have identical electrical specifications and are functionally interchangeable; selection depends on assembly equipment compatibility and inventory management requirements.

Q: Can the TZM5230B-GS08 be used as a direct replacement for the DL5230B-TP?

A: Yes. The TZM5230B-GS08 is a direct electrical equivalent with matching impedance (19 Ohms), forward voltage (1.1 V @ 200 mA), tolerance (±5%), and operating temperature range (-65°C to 175°C). Both parts use the same SOD-80 package. This is the recommended primary substitute.

Q: What should be considered when switching from DO-213AC to SOD-123 package?

A: Package switching requires verification of circuit board layout, pad spacing, and assembly process compatibility. SOD-123 is a smaller package than DO-213AC (Mini MELF). Thermal performance may differ due to reduced package size. Consult PCB design guidelines and assembly specifications before implementing this substitution.

Q: Is the operating temperature range critical for selecting a substitute?

A: Yes. The original DL5230B-TP operates from -65°C to 175°C. Substitutes with reduced temperature ranges (such as MMSZ5230B-TP at -55°C to 150°C) are suitable only for applications that do not require the full temperature specification. Verify application requirements before selecting a substitute with a narrower temperature range.

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