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HSMS-2804-BLKG Equivalent & Substitute Parts
Part Overview
The HSMS-2804-BLKG is an RF Schottky diode manufactured by Broadcom Limited, configured as a 1 Pair Common Cathode device rated for 70V peak reverse voltage and 1A maximum current in a SOT-23-3 surface mount package. This part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Suitable alternatives must maintain the same electrical characteristics, package form factor, and diode configuration to ensure direct board-level compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Diode Type | Schottky - 1 Pair Common Cathode |
| Voltage - Peak Reverse (Max) | 70V |
| Current - Max | 1 A |
| Capacitance @ Vr, F | 2pF @ 0V, 1MHz |
| Resistance @ If, F | 35Ohm @ 5mA, 1MHz |
| Operating Temperature (TJ) | 150°C |
| Package / Case | TO-236-3, SC-59, SOT-23-3 |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the HSMS-2804-BLKG is determined by the following critical parameters:
- Diode Configuration: Must be 1 Pair Common Cathode Schottky technology
- Voltage Rating: DC Reverse voltage (Vr) must be 70V minimum
- Current Capability: Average rectified current (Io) per diode must support the application requirements
- Package Compatibility: Surface mount TO-236-3, SC-59, or SOT-23-3 package
- Operating Temperature: Junction temperature rating of 150°C or higher
- Mounting Type: Surface mount only
All identified substitute parts meet these core substitution criteria and are classified as active products with current manufacturing status, ensuring long-term availability and supply chain reliability.
Parameter Comparison
| Parameter | HSMS-2804-BLKG (Main) | BAS70-05FILM | BAS70-05,215 | BAS70-05,235 | BAS7005E6327HTSA1 | MADS-001340-12790T |
|---|---|---|---|---|---|---|
| Manufacturer | Broadcom Limited | STMicroelectronics | NXP USA Inc. | Nexperia USA Inc. | Infineon Technologies | MACOM Technology Solutions |
| Diode Configuration | 1 Pair Common Cathode | 1 Pair Common Cathode | 1 Pair Common Cathode | 1 Pair Common Cathode | 1 Pair Common Cathode | Single |
| Technology | Schottky | Schottky | Schottky | Schottky | Schottky | Schottky |
| Voltage - Peak/DC Reverse (Max) | 70V | 70V | 70V | 70V | 70V | 70V |
| Current Rating | 1 A | 70mA (DC) | 70mA (DC) | 70mA (DC) | 70mA (DC) | 200 mA |
| Voltage - Forward (Vf) (Max) @ If | Not specified | 1 V @ 15 mA | 1 V @ 15 mA | 1 V @ 15 mA | 1 V @ 15 mA | Not specified |
| Operating Temperature (TJ) | 150°C | 150°C (Max) | 150°C (Max) | 150°C (Max) | 150°C (Max) | -55°C ~ 125°C |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | SC-79, SOD-523 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| RoHS Status | Not specified | ROHS3 Compliant | Not specified | ROHS3 Compliant | ROHS3 Compliant | Not specified |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Not specified | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Substitutes (Recommended for Direct Replacement)
BAS70-05FILM, BAS70-05,215, BAS70-05,235, and BAS7005E6327HTSA1 are the preferred substitutes for the HSMS-2804-BLKG. These parts maintain identical package geometry (SOT-23-3), diode configuration (1 Pair Common Cathode), and voltage rating (70V). All four are active products with established supply chains. BAS70-05FILM (STMicroelectronics), BAS70-05,235 (Nexperia), and BAS7005E6327HTSA1 (Infineon) carry ROHS3 compliance certification. Current ratings for these alternatives are specified at 70mA DC per diode, which is lower than the original 1A specification; applications requiring the full 1A rating must be evaluated for compatibility.
Alternative Substitute (Limited Application)
MADS-001340-12790T (MACOM Technology Solutions) is a single Schottky diode rated for 70V and 200mA, packaged in SC-79 (SOD-523). This part differs from the main device in both diode configuration (single versus pair common cathode) and package form factor. Selection of this part requires circuit redesign to accommodate the single-diode topology and different pinout. The maximum junction temperature rating of 125°C is lower than the 150°C specification of the main part and alternatives.
Compliance and Availability
All substitute parts are manufactured by established semiconductor suppliers with active product status, ensuring continued availability. Inventory levels range from 4,443 to 32,526 units across the substitute options, supporting both prototype and production volume requirements.
Frequently Asked Questions (FAQ)
Q: Can BAS70-05FILM, BAS70-05,215, BAS70-05,235, or BAS7005E6327HTSA1 be used as direct drop-in replacements for HSMS-2804-BLKG?
A: Yes, these four parts are direct substitutes for board-level compatibility. All maintain the SOT-23-3 package, 1 Pair Common Cathode configuration, and 70V voltage rating. Pin assignments are identical. However, the current rating is reduced to 70mA DC per diode compared to the original 1A specification. Verify that your application does not exceed 70mA per diode at operating conditions.
Q: What is the difference between the BAS70-05 variants (BAS70-05FILM, BAS70-05,215, BAS70-05,235)?
A: These are equivalent parts from different manufacturers (STMicroelectronics, NXP USA Inc., and Nexperia USA Inc., respectively) with identical electrical specifications and package form factors. The suffixes indicate different packaging formats and supplier designations. Selection among these variants is based on supply availability, lead time, and procurement preferences.
Q: Why is MADS-001340-12790T listed as a substitute if it has a different package?
A: MADS-001340-12790T meets the core electrical substitution criteria (70V Schottky technology) but requires circuit redesign due to its single-diode configuration and SC-79 package. This part is suitable only for applications where the circuit topology can be modified to accommodate a single diode instead of a common cathode pair.
Q: Are all substitute parts RoHS compliant?
A: BAS70-05FILM, BAS70-05,235, and BAS7005E6327HTSA1 are certified ROHS3 compliant. BAS70-05,215 and MADS-001340-12790T do not specify RoHS status in the provided data. Verify RoHS compliance requirements with your procurement or quality assurance department before final part selection.
Q: What is the maximum junction temperature for each substitute?
A: BAS70-05FILM, BAS70-05,215, BAS70-05,235, and BAS7005E6327HTSA1 are rated for 150°C maximum junction temperature, matching the original HSMS-2804-BLKG specification. MADS-001340-12790T is rated for a maximum of 125°C, which is 25°C lower. Applications operating near thermal limits must account for this difference.
Q: Can I use multiple MADS-001340-12790T devices in parallel to achieve higher current capacity?
A: Parallel operation of single-diode devices requires additional circuit design considerations including current-sharing resistors and thermal management. This approach is not a direct substitution and requires engineering evaluation specific to your application requirements.
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