ZXCL300H5TA Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The ZXCL300H5TA is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to provide a fixed 3V output at 150mA in a compact SC-70-5 surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The device features enable control, over-current protection, and over-temperature protection across an operating range of -40°C to 85°C.

Substiute Parts

ZXCL300H5TA

Diodes IncorporatedIn Stock: 140818ZXCL300H5TA Datasheet

Current PartRFQ

AP7115-30SEG-7

Diodes IncorporatedIn Stock: 3477AP7115-30SEG-7 Datasheet

Parametric EquivalentRFQ

ZXCL5213V30H5TA

Diodes IncorporatedIn Stock: 9406ZXCL5213V30H5TA Datasheet

Parametric EquivalentRFQ

ISL9008AIEMZ-T

Renesas Electronics CorporationIn Stock: 2098ISL9008AIEMZ-T Datasheet

MFR RecommendedRFQ

LP5951MGX-3.0/NOPB

Texas InstrumentsIn Stock: 1042LP5951MGX-3.0/NOPB Datasheet

MFR RecommendedRFQ

RT9198-30GU5R

Richtek USA Inc.In Stock: 4037RT9198-30GU5R Datasheet

MFR RecommendedRFQ

TLV70030DCKR

Texas InstrumentsIn Stock: 17202TLV70030DCKR Datasheet

MFR RecommendedRFQ

TLV70030DCKT

Texas InstrumentsIn Stock: 2276TLV70030DCKT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ZXCL300H5TA is determined by the following critical parameters:

• Output voltage fixed at 3V
• Output current capability of 150mA or greater
• Maximum input voltage of 5.5V or higher
• SC-70-5 or SOT-353 package compatibility
• Surface mount mounting type
• Enable control feature
• Over-current and over-temperature protection

Substitute parts are grouped into two categories: parametric equivalents (matching all core electrical specifications) and manufacturer-recommended alternatives (offering enhanced features or higher current ratings while maintaining 3V output and package compatibility).

Parameter Comparison

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred for Pin-Compatible Replacement)

ZXCL5213V30H5TA and AP7115-30SEG-7 provide the closest electrical match to the ZXCL300H5TA with identical 3V output and 150mA current rating. Both are active products with ROHS3 compliance. ZXCL5213V30H5TA maintains the SC-70-5 package and identical dropout characteristics. AP7115-30SEG-7 uses the SOT-353 package variant with marginally higher dropout (0.3V vs 0.28V) but offers higher quiescent current specification.

Manufacturer-Recommended Alternatives (Enhanced Performance)

ISL9008AIEMZ-T (Renesas) provides higher input voltage tolerance (6.5V maximum) and additional protection features including soft start and under-voltage lockout. LP5951MGX-3.0/NOPB (Texas Instruments) extends operating temperature to 125°C and includes short-circuit protection with PSRR specification of 60dB to 50dB across 100Hz to 10kHz. TLV70030DCKR and TLV70030DCKT (Texas Instruments) offer 200mA output current with superior dropout performance (0.25V @ 200mA), extended temperature range to 125°C, and comprehensive protection including reverse polarity and UVLO.

Higher Current Alternative

RT9198-30GU5R (Richtek USA) doubles the output current to 300mA while maintaining 3V output and SC-70-5R package compatibility. This option suits applications requiring higher current delivery with the same form factor.

All substitute parts maintain ROHS3 compliance and are currently in active production status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can I directly replace ZXCL300H5TA with ZXCL5213V30H5TA?

A: Yes. ZXCL5213V30H5TA is a parametric equivalent with identical output voltage (3V), current rating (150mA), dropout voltage (0.28V @ 100mA), quiescent current (50 µA), and SC-70-5 package. Both feature enable control and identical protection mechanisms. This is the recommended direct replacement.

Q: What is the difference between SC-70-5 and SOT-353 packages?

A: SC-70-5 and SOT-353 are equivalent package designations for the same 5-pin surface mount form factor. AP7115-30SEG-7 uses SOT-353 nomenclature while maintaining identical pinout and footprint compatibility with SC-70-5 devices.

Q: Why would I choose TLV70030DCKR over the direct equivalent?

A: TLV70030DCKR offers higher output current (200mA vs 150mA), superior dropout performance (0.25V @ 200mA), extended operating temperature range (-40°C to 125°C), and additional protection features including reverse polarity and UVLO. Select this part if your application requires higher current delivery or operates at elevated temperatures.

Q: Is ISL9008AIEMZ-T compatible with higher input voltages?

A: Yes. ISL9008AIEMZ-T accepts input voltages up to 6.5V compared to 5.5V for the ZXCL300H5TA. This provides additional design margin for input supply variations. The part also includes soft start and UVLO protection features.

Q: Can I use RT9198-30GU5R as a drop-in replacement?

A: RT9198-30GU5R is mechanically compatible (SC-70-5R package) and electrically compatible (3V output, 5.5V maximum input). However, it provides 300mA output current versus 150mA. Use this part only if your circuit can tolerate higher current capability or if you require the additional current margin.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original ZXCL300H5TA specification.

Q: Which substitute offers the best dropout performance?

A: TLV70030DCKR and TLV70030DCKT both deliver 0.25V dropout at 200mA, the lowest among all listed alternatives. This provides superior efficiency in applications with tight input-to-output voltage margins.