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SCHURTER 0034.3952 Equivalent & Substitute Parts
Part Overview
The SCHURTER 0034.3952 is a 500 mA, 250 V AC/DC glass cartridge fuse in 5mm x 20mm form factor, part of the FSQ series. This component requires a fuse holder for installation and is designed for fast-blow response characteristics. The part is currently in active production with 672 pieces in stock. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, response time characteristics, and approval agency certifications to ensure direct functional interchangeability in circuit protection applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Current Rating | 500 mA |
| Voltage Rating (AC) | 250 V |
| Fuse Type | Cartridge, Glass |
| Package / Case | 5mm x 20mm |
| Response Time | Fast Blow |
| Breaking Capacity @ Rated Voltage | 35A |
| Operating Temperature Range | -55°C ~ 125°C |
| Mounting Type | Requires Holder |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the SCHURTER 0034.3952 are qualified based on the following criteria:
Electrical Parameters (Mandatory Match):
- Current Rating: 500 mA
- Voltage Rating (AC): 250 V
- Response Time: Fast Blow
- Breaking Capacity @ Rated Voltage: 35A
Mechanical Parameters (Mandatory Match):
- Package / Case: 5mm x 20mm
- Fuse Type: Cartridge, Glass
- Mounting Type: Requires Holder
Environmental Parameters (Mandatory Match):
- Operating Temperature Range: -55°C ~ 125°C
- RoHS Status: ROHS3 Compliant
Certification Alignment: Substitute parts must maintain compatibility with approval agencies relevant to the application. Parts listed below meet or exceed the certification requirements of the main part.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Current Rating (Amps) | Voltage Rating - AC | Response Time | Package / Case | Breaking Capacity @ Rated Voltage | Melting I²t | Operating Temperature | DC Cold Resistance (Ohms) | Approval Agency | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0034.3952 | SCHURTER Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | Not specified | -55°C ~ 125°C | Not specified | Not specified | 672 |
| 0034.1513 | SCHURTER Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.151 | -55°C ~ 125°C | Not specified | CCC, cURus, VDE | 6101 |
| 0034.1513.G | SCHURTER Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.151 | -55°C ~ 125°C | Not specified | CCC, CE, CSA, cURus, UKCA, UL, VDE | 757 |
| 0235.500MXP | Littelfuse | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.06915 | -55°C ~ 125°C | 0.4265 | CE, CSA, KC, UL | 1275 |
| 0235.500VXP | Littelfuse Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.06915 | -55°C ~ 125°C | 0.4265 | CE, CSA, K-MARK, UL | 886 |
| 5SF 500-R | Bel Fuse Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.4 | -55°C ~ 125°C | 0.32 | CCC, CE, CSA, cURus, IMQ, SEMKO, VDE | 2562 |
| 0217.500HXP | Littelfuse Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.215 | -55°C ~ 125°C | 0.2065 | CCC, CE, CSA, K-MARK, SEMKO, UL, VDE | 2683 |
| 0217.500MXBP | Littelfuse Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.215 | -55°C ~ 125°C | 0.2065 | CCC, CE, CSA, KC, SEMKO, UL, VDE | 991 |
| 0217.500MXP | Littelfuse Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.215 | -55°C ~ 125°C | 0.2065 | CCC, CE, CSA, K-MARK, SEMKO, UL, VDE | 3196 |
| 0217.500TXP | Littelfuse Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.215 | -55°C ~ 125°C | 0.2065 | CCC, CE, CSA, KC, SEMKO, UL, VDE | 711 |
| 0217.500VXP | Littelfuse Inc. | 500 mA | 250 V | Fast Blow | 5mm x 20mm | 35A | 0.215 | -55°C ~ 125°C | 0.2065 | CCC, CE, CSA, KC, SEMKO, UL, VDE | 960 |
Engineering Selection Recommendations
All listed substitute parts meet the mandatory electrical, mechanical, and environmental parameters of the SCHURTER 0034.3952. Selection among equivalents should be based on:
Certification Requirements: The 0034.1513.G variant offers the broadest certification coverage (CCC, CE, CSA, cURus, UKCA, UL, VDE) and is recommended for applications requiring multi-regional compliance. The Littelfuse 0217 series (0217.500HXP, 0217.500MXBP, 0217.500MXP, 0217.500TXP, 0217.500VXP) provides comprehensive certifications (CCC, CE, CSA, SEMKO, UL, VDE) with high inventory availability.
Availability: The 0217.500MXP offers the highest inventory level (3196 pieces), followed by 5SF 500-R (2562 pieces) and 0217.500HXP (2683 pieces).
Thermal Characteristics: Melting I²t values vary across substitutes (0.06915 to 0.4). The SCHURTER 0034.1513 and 0034.1513.G maintain I²t values of 0.151, which aligns with the thermal response profile of the original part. Littelfuse 0217 series parts maintain consistent I²t of 0.215.
DC Cold Resistance: Littelfuse parts in the 0217 and 0235 series specify DC cold resistance values (0.2065 to 0.4265 Ohms), providing additional thermal performance data for circuit analysis.
Frequently Asked Questions (FAQ)
Q: Can I substitute the SCHURTER 0034.3952 with any of the listed parts?
A: Yes. All listed parts are parametric equivalents that match the mandatory electrical ratings (500 mA, 250 V AC), response time (Fast Blow), mechanical dimensions (5mm x 20mm), and operating temperature range (-55°C ~ 125°C). Direct substitution is supported without circuit modification.
Q: What is the difference between the SCHURTER 0034.1513 and 0034.1513.G?
A: Both parts are electrically and mechanically identical with matching Melting I²t values (0.151). The primary difference is certification scope: 0034.1513.G includes additional approvals (CE, UKCA, UL) beyond the base 0034.1513 variant (CCC, cURus, VDE). Select 0034.1513.G for applications requiring broader regional compliance.
Q: How do Melting I²t values affect substitution?
A: Melting I²t characterizes the thermal energy required to melt the fuse element. Variations in I²t (0.06915 to 0.4 across listed parts) indicate different thermal response profiles. For applications with specific thermal requirements, verify that the substitute part's I²t value is compatible with circuit protection coordination. The SCHURTER 0034.1513 series (I²t = 0.151) maintains thermal characteristics closest to the original part.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant, meeting environmental and hazardous substance restrictions.
Q: What does "Requires Holder" mean for mounting?
A: All listed parts are cartridge fuses that require a separate fuse holder for installation. The holder provides electrical contact and mechanical retention. Ensure the fuse holder is rated for 5mm x 20mm cartridge fuses and 250 V AC operation.
Q: Which substitute offers the best certification coverage?
A: The SCHURTER 0034.1513.G provides the broadest certification scope (CCC, CE, CSA, cURus, UKCA, UL, VDE), making it suitable for multi-regional applications. The Littelfuse 0217 series also provides comprehensive coverage (CCC, CE, CSA, SEMKO, UL, VDE) with higher inventory availability.
Q: Can I use these parts interchangeably in the same circuit?
A: Yes, within the constraints of your circuit protection coordination requirements. All parts meet the same electrical and mechanical specifications. However, if your circuit design accounts for specific thermal response characteristics (Melting I²t), verify that the substitute part's I²t value is appropriate for your application.
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