Request Quote
(Ships tomorrow)
AS1909C20-T Equivalent & Substitute Parts
Part Overview
The AS1909C20-T is a single-channel power supply supervisor IC manufactured by ams-OSRAM USA INC. in the SOT-23-3 surface mount package. This device functions as a simple reset/power-on reset controller with open drain or open collector output, monitoring a single voltage rail at a 2V threshold with a 100ms minimum reset timeout.
The AS1909C20-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.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Category | Power Management (PMIC) |
| Type | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 |
| Voltage - Threshold | 2V |
| Output Configuration | Open Drain or Open Collector |
| Reset Logic | Active Low |
| Reset Timeout | 100ms Minimum |
| Operating Temperature Range | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | TO-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | SOT-23-3 |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the AS1909C20-T is determined by strict equivalence across the following critical parameters:
Functional Parameters:
- Single voltage monitoring channel
- 2V threshold voltage
- Open drain or open collector output topology
- Active low reset logic
- 100ms minimum reset timeout
Physical Parameters:
- SOT-23-3 package (TO-236-3, SC-59)
- Surface mount configuration
Environmental Parameters:
- Operating temperature range: -40°C ~ 125°C
- Moisture sensitivity level: 1 (Unlimited)
The MAX6334UR20D3+T from Analog Devices Inc./Maxim Integrated meets all specified parameters and qualifies as a parametric equivalent. This substitution is based on identical functional specifications, package compatibility, and environmental operating conditions.
Parameter Comparison
| Parameter | AS1909C20-T | MAX6334UR20D3+T |
|---|---|---|
| Manufacturer | ams-OSRAM USA INC. | Analog Devices Inc./Maxim Integrated |
| Category | Power Management (PMIC) | Power Management (PMIC) |
| Type | Simple Reset/Power-On Reset | Simple Reset/Power-On Reset |
| Number of Voltages Monitored | 1 | 1 |
| Voltage - Threshold | 2V | 2V |
| Output Configuration | Open Drain or Open Collector | Open Drain or Open Collector |
| 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 |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 |
| Supplier Device Package | SOT-23-3 | SOT-23-3 |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The MAX6334UR20D3+T is the qualified substitute for the AS1909C20-T based on the following factors:
Product Status: The AS1909C20-T is obsolete, while the MAX6334UR20D3+T maintains active product status with Analog Devices Inc./Maxim Integrated, ensuring ongoing availability and manufacturing support.
Compliance & Certifications: Both parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8542.39.0001). The MAX6334UR20D3+T carries RoHS3 compliance certification.
Parametric Equivalence: All critical electrical and mechanical parameters are identical, including voltage threshold, output topology, reset timing, operating temperature range, and package configuration.
Supply Chain: The MAX6334UR20D3+T is available in higher inventory quantities (1174 Pcs) compared to remaining AS1909C20-T stock (847 Pcs), supporting long-term production continuity.
Frequently Asked Questions (FAQ)
Q: Can the MAX6334UR20D3+T be used as a direct replacement for the AS1909C20-T?
A: Yes. Both parts are functionally equivalent across all specified parameters: single-channel voltage monitoring at 2V threshold, open drain/open collector output, active low reset logic, 100ms minimum reset timeout, and identical SOT-23-3 package configuration. No circuit modifications are required.
Q: Are there any differences in package handling or moisture sensitivity?
A: No. Both parts are specified with MSL 1 (Unlimited), indicating identical moisture sensitivity levels and handling requirements. Both use the SOT-23-3 package (TO-236-3, SC-59) with surface mount configuration.
Q: What is the primary reason to transition from AS1909C20-T to MAX6334UR20D3+T?
A: The AS1909C20-T is obsolete. The MAX6334UR20D3+T is an active product with ongoing manufacturing support, ensuring supply chain continuity and long-term availability for production requirements.
Q: Are there compliance or certification differences between these parts?
A: Both parts share identical REACH status, ECCN classification, and HTSUS codes. The MAX6334UR20D3+T includes RoHS3 compliance certification, providing additional regulatory alignment for modern manufacturing standards.
Q: What is the operating temperature range for both parts?
A: Both the AS1909C20-T and MAX6334UR20D3+T operate across -40°C to 125°C (TA), supporting identical thermal specifications for industrial and commercial applications.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts