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PM3602-68-B-RC Equivalent & Substitute Parts
Part Overview
The PM3602-68-B-RC is an unshielded 2-coil inductor array manufactured by Bourns Inc. from the PM3600 series. This component provides dual inductance configurations: 68 µH in parallel connection and 272 µH in series connection, with a maximum DC resistance of 260 mOhm in parallel mode. The part is classified as obsolete, necessitating identification of active equivalent components for ongoing production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Bourns Inc. |
| Series | PM3600 |
| Number of Coils | 2 |
| Inductance - Parallel | 68 µH |
| Inductance - Series | 272 µH |
| Tolerance | ±20% |
| Current Rating - Parallel | 720 mA |
| Current Rating - Series | 360 mA |
| DC Resistance (DCR) - Parallel | 260 mOhm Max |
| DC Resistance (DCR) - Series | 1.04 Ohm Max |
| Shielding | Unshielded |
| Operating Temperature Range | -55°C to 125°C |
| Mounting Type | Surface Mount |
| Package / Case | Nonstandard |
| Physical Dimensions | 0.452" L x 0.354" W x 0.225" H (11.48mm x 8.99mm x 5.72mm) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the PM3602-68-B-RC is determined by strict equivalence across the following critical parameters:
- Inductance values in both parallel (68 µH) and series (272 µH) configurations
- Current ratings for parallel (720 mA) and series (360 mA) modes
- DC resistance specifications (260 mOhm max parallel, 1.04 Ohm max series)
- Dual-coil architecture with identical tolerance (±20%)
- Unshielded construction
- Surface mount technology with nonstandard package dimensions
- Operating temperature range (-55°C to 125°C)
- Compliance certifications (ROHS3, MSL 1)
The PM3602-68-RC qualifies as a direct substitute based on identical electrical and mechanical specifications. The primary distinction is packaging format and product status.
Parameter Comparison
| Parameter | PM3602-68-B-RC (Main Part) | PM3602-68-RC (Substitute) |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Series | PM3600 | PM3600 |
| Number of Coils | 2 | 2 |
| Inductance - Parallel | 68 µH | 68 µH |
| Inductance - Series | 272 µH | 272 µH |
| Tolerance | ±20% | ±20% |
| Current Rating - Parallel | 720 mA | 720 mA |
| Current Rating - Series | 360 mA | 360 mA |
| DC Resistance (DCR) - Parallel | 260 mOhm Max | 260 mOhm Max |
| DC Resistance (DCR) - Series | 1.04 Ohm Max | 1.04 Ohm Max |
| Shielding | Unshielded | Unshielded |
| Operating Temperature Range | -55°C to 125°C | -55°C to 125°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | Nonstandard | Nonstandard |
| Physical Dimensions | 0.452" L x 0.354" W x 0.225" H | 0.452" L x 0.354" W x 0.225" H |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
| Packaging Format | Bulk | Tape & Reel (TR) |
Engineering Selection Recommendations
The PM3602-68-RC is the qualified substitute for the obsolete PM3602-68-B-RC. Both components are manufactured by Bourns Inc. within the PM3600 series and maintain identical electrical specifications and physical dimensions. The substitute part carries active product status, ensuring continued availability and supply chain reliability.
The primary operational difference is packaging format: the main part is supplied in bulk configuration, while the substitute is supplied in Tape & Reel format. This distinction affects handling, storage, and automated assembly processes but does not impact electrical performance or functional compatibility.
Both parts maintain ROHS3 compliance and MSL 1 rating, confirming suitability for standard manufacturing and storage environments without moisture sensitivity constraints.
Frequently Asked Questions (FAQ)
Q: Are the PM3602-68-B-RC and PM3602-68-RC electrically identical?
A: Yes. Both components provide identical inductance values (68 µH parallel, 272 µH series), current ratings (720 mA parallel, 360 mA series), and DC resistance specifications (260 mOhm max parallel, 1.04 Ohm max series). Electrical performance is equivalent across all operating conditions within the -55°C to 125°C temperature range.
Q: What is the difference between these two part numbers?
A: The primary difference is packaging format. The PM3602-68-B-RC is supplied in bulk packaging, while the PM3602-68-RC is supplied in Tape & Reel format. The PM3602-68-RC also carries active product status, whereas the PM3602-68-B-RC is classified as obsolete.
Q: Can I use PM3602-68-RC in place of PM3602-68-B-RC in existing designs?
A: Yes. The substitute part is mechanically and electrically compatible. Physical dimensions, mounting type, and all electrical parameters are identical. Tape & Reel packaging is compatible with standard surface mount assembly equipment.
Q: Are there any compliance or certification differences?
A: No. Both parts maintain identical ROHS3 compliance status and MSL 1 rating. Environmental and regulatory certifications are equivalent.
Q: Why is the original part classified as obsolete?
A: The PM3602-68-B-RC is obsolete due to manufacturer discontinuation. The PM3602-68-RC remains in active production and is the recommended replacement for new designs and ongoing production requirements.
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