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Equivalent & Substitute Parts Reference for STPS2170AFN
Part Overview
The STMicroelectronics STPS2170AFN is a Schottky diode with a maximum reverse DC voltage of 170 V and an average rectified current rating of 2A. It features fast recovery (≤500ns, >200mA Io), low forward voltage drop, and surface mount capability via its SMAflat Notch package. The diode is now classified as obsolete. Engineers seeking to maintain board-level compatibility and electrical performance must identify substitute models with matching key electrical and mechanical parameters.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | STPS2170AFN |
| Manufacturer | STMicroelectronics |
| Category | Diodes, Rectifiers |
| Technology | Schottky |
| Voltage - DC Reverse (Vr) (Max) | 170 V |
| Current - Average Rectified (Io) | 2A |
| Voltage - Forward (Vf) (Max) @ If | 820 mV @ 2 A |
| Speed | Fast Recovery ≤ 500ns, > 200mA (Io) |
| Current - Reverse Leakage @ Vr | 2.8 µA @ 170 V |
| Mounting Type | Surface Mount |
| Package / Case | DO-221AC, SMA Flat Leads |
| Supplier Device Package | SMAflat Notch |
| Operating Temperature - Junction | 175°C |
| RoHS Status | ROHS3 Compliant |
| MSL | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| HTSUS | 8541.10.0080 |
Substitute Part Grouping Explanation
Substitute parts are selected strictly by matching key electrical and mechanical parameters, which include: diode technology, maximum reverse voltage, average rectified current, forward voltage at rated current, recovery speed, reverse leakage at rated voltage, mounting method, package outline, and regulatory compliance. All substitutions listed conform precisely to these specifications.
Parameter Comparison
| Parameter | STPS2170AFN (Obsolete) | STPS2170AF (Active) |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Category | Diodes, Rectifiers | Diodes, Rectifiers |
| Technology | Schottky | Schottky |
| Voltage - DC Reverse (Vr) (Max) | 170 V | 170 V |
| Current - Average Rectified (Io) | 2A | 2A |
| Voltage - Forward (Vf) (Max) @ If | 820 mV @ 2 A | 820 mV @ 2 A |
| Speed | Fast Recovery ≤ 500ns, > 200mA (Io) | Fast Recovery ≤ 500ns, > 200mA (Io) |
| Current - Reverse Leakage @ Vr | 2.8 µA @ 170 V | 2.8 µA @ 170 V |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | DO-221AC, SMA Flat Leads | DO-214AC, SMA Flat Leads |
| Supplier Device Package | SMAflat Notch | SMAflat |
| Operating Temperature - Junction | 175°C | -40°C ~ 175°C |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
| ECCN | EAR99 | EAR99 |
| HTSUS | 8541.10.0080 | 8541.10.0080 |
Engineering Selection Recommendations
STPS2170AFN is obsolete. Select substitute parts with identical regulatory compliance (RoHS3, REACH, ECCN EAR99), Moisture Sensitivity Level (1, Unlimited), and matching electrical/mechanical ratings. STPS2170AF retains active status and conforms to all provided certifications.
Frequently Asked Questions (FAQ)
Q1: What are the primary criteria for substituting STPS2170AFN?
A1: Substitute diodes must match technology type, voltage ratings, current ratings, forward voltage at rated current, recovery speed, reverse leakage, mounting type, package, and compliance certifications.
Q2: Are there package compatibility considerations when replacing STPS2170AFN?
A2: Both original and substitute use surface mount packages with SMA flat leads. Confirm the package type and footprint as provided.
Q3: Does the regulatory compliance status of STPS2170AFN transfer to substitutes?
A3: Substitute parts listed retain ROHS3 and REACH compliance, identical ECCN, and MSL 1 (Unlimited).
Q4: Is there any difference in operating temperature range between STPS2170AFN and STPS2170AF?
A4: STPS2170AF offers a wider junction temperature range (-40°C to 175°C), while STPS2170AFN specifies up to 175°C.
Q5: Is product status important when selecting substitutes?
A5: Only active parts should be selected, as obsolete models may be unavailable for new designs. STPS2170AF is listed as active.
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