AS1907C23-T Equivalent & Substitute Parts Reference

Part Overview

The AS1907C23-T is a single-channel power management supervisor IC manufactured by ams-OSRAM USA INC. in SOT-23-3 surface mount packaging. This device functions as a simple reset/power-on reset supervisor with push-pull totem pole output configuration, designed to monitor a single voltage threshold at 2.3V with an active-low reset signal and 100ms minimum reset timeout.

The AS1907C23-T is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this supervisor topology.

Key Parameters

Parameter	Value
Manufacturer Part Number	AS1907C23-T
Manufacturer	ams-OSRAM USA INC.
Category	Power Management (PMIC)
Package / Case	TO-236-3, SC-59, SOT-23-3
Type	Simple Reset/Power-On Reset
Number of Voltages Monitored	1
Voltage - Threshold	2.3V
Output Configuration	Push-Pull, Totem Pole
Reset Logic	Active Low
Reset Timeout	100ms Minimum
Operating Temperature Range	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the AS1907C23-T are identified based on strict parametric equivalence across the following critical criteria:

Electrical Parameters:

Single voltage monitoring channel
2.3V threshold voltage
Push-pull totem pole output configuration
Active-low reset signal logic
100ms minimum reset timeout duration
Operating temperature range: -40°C to 125°C

Mechanical & Packaging Parameters:

SOT-23-3 package (TO-236-3, SC-59 designations)
Surface mount technology
Moisture sensitivity level 1 (unlimited)

Compliance & Regulatory:

REACH unaffected status
EAR99 export classification
HTSUS code 8542.39.0001

The MAX6333UR23D3+T from Analog Devices Inc./Maxim Integrated meets all specified electrical, mechanical, and regulatory parameters and qualifies as a parametric equivalent substitute.

Parameter Comparison

Parameter	AS1907C23-T	MAX6333UR23D3+T
Manufacturer	ams-OSRAM USA INC.	Analog Devices Inc./Maxim Integrated
Category	Power Management (PMIC)	Power Management (PMIC)
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Type	Simple Reset/Power-On Reset	Simple Reset/Power-On Reset
Number of Voltages Monitored	1	1
Voltage - Threshold	2.3V	2.3V
Output Configuration	Push-Pull, Totem Pole	Push-Pull, Totem Pole
Reset Logic	Active Low	Active Low
Reset Timeout	100ms Minimum	100ms Minimum
Operating Temperature Range	-40°C ~ 125°C (TA)	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS Code	8542.39.0001	8542.39.0001

Engineering Selection Recommendations

Primary Substitute: MAX6333UR23D3+T

The MAX6333UR23D3+T is the qualified parametric equivalent for the obsolete AS1907C23-T. Selection of this substitute is supported by the following factors:

Product Status: The MAX6333UR23D3+T maintains active product status with Analog Devices Inc./Maxim Integrated, ensuring ongoing availability, technical support, and supply chain continuity.

Regulatory Compliance: Both parts share identical REACH status (unaffected), ECCN classification (EAR99), and HTSUS coding (8542.39.0001), eliminating compliance barriers to substitution.

Parametric Alignment: All critical electrical parameters—voltage threshold, output configuration, reset logic, timeout duration, and operating temperature range—are identical between the main part and substitute.

Package Compatibility: Both devices utilize SOT-23-3 surface mount packaging with identical pinout and mechanical dimensions, enabling direct board-level substitution without layout modification.

Packaging Format: The MAX6333UR23D3+T is supplied in Tape & Reel (TR) format, standard for production environments. Current inventory availability is 758 pieces.

Frequently Asked Questions (FAQ)

Q: Can the MAX6333UR23D3+T be used as a direct replacement for the AS1907C23-T?

A: Yes. The MAX6333UR23D3+T is a parametric equivalent with identical electrical specifications, package type, and pinout. Direct substitution is supported at the board level without design modification.

Q: What is the primary reason for substitution?

A: The AS1907C23-T is classified as obsolete. The MAX6333UR23D3+T provides equivalent functionality with active product status and assured long-term availability.

Q: Are there any differences in operating temperature range?

A: No. Both parts operate across the identical temperature range of -40°C to 125°C (TA).

Q: Do both parts have the same voltage threshold?

A: Yes. Both the AS1907C23-T and MAX6333UR23D3+T monitor a single voltage channel with a 2.3V threshold and 100ms minimum reset timeout.

Q: Is the SOT-23-3 package identical between both parts?

A: Yes. Both parts use the SOT-23-3 package (also designated TO-236-3 or SC-59) with identical mechanical dimensions and pinout configuration.

Q: What is the difference in packaging format?

A: The AS1907C23-T packaging format is not specified in available data. The MAX6333UR23D3+T is supplied in Tape & Reel (TR) format, standard for production quantities.

Q: Are regulatory certifications equivalent?

A: Yes. Both parts share identical REACH status (unaffected), ECCN classification (EAR99), and HTSUS code (8542.39.0001).

Q: What is the reset output configuration?

A: Both parts feature push-pull totem pole output with active-low reset logic, providing direct drive capability for microcontroller reset inputs.

Q: Is moisture sensitivity a concern for substitution?

A: No. Both parts carry MSL rating 1 (unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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