HSMP-3814-BLKG RF PIN Diode Equivalent & Substitute Parts

Part Overview

The HSMP-3814-BLKG is an RF PIN diode manufactured by Broadcom Limited, configured as a 1 Pair Common Cathode device in SOT-23-3 packaging. This component is rated for 100V peak reverse voltage with 1A maximum current capability and features 0.35pF capacitance at 50V, 1MHz. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

HSMP-3814-BLKG

Broadcom LimitedIn Stock: 13664HSMP-3814-BLKG Datasheet

Current PartRFQ

BAP64-05-TP

Micro Commercial CoIn Stock: 84741BAP64-05-TP Datasheet

MFR RecommendedRFQ

MADP-007167-0287DT

MACOM Technology SolutionsIn Stock: 1404MADP-007167-0287DT Datasheet

MFR RecommendedRFQ

SMP1307-004LF

Skyworks Solutions Inc.In Stock: 1498SMP1307-004LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HSMP-3814-BLKG is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package type: SOT-23-3 (TO-236-3, SC-59)
• Diode configuration: PIN diode topology
• Voltage rating: Must equal or exceed 100V peak reverse voltage
• Current handling: Must support application requirements
• Capacitance and resistance characteristics: Must be compatible with RF circuit performance

Substitution Logic: The three identified substitute parts maintain SOT-23-3 packaging and PIN diode topology. All candidates exceed the original 100V voltage specification, providing design margin. Differences in diode pair configuration (common cathode vs. parallel), current ratings, and resistance characteristics determine suitability based on specific circuit requirements. Product status and compliance certifications are secondary selection factors.

Parameter Comparison

Engineering Selection Recommendations

MADP-007167-0287DT (MACOM Technology Solutions) is the preferred substitute for new designs. This part carries Active product status, ensuring long-term availability and manufacturing support. The 200V voltage rating provides adequate margin above the original 100V specification. The higher operating temperature rating of 175°C (TJ) exceeds the original 150°C specification. However, the 4 Pair Parallel configuration differs from the original 1 Pair Common Cathode topology, requiring circuit-level verification of pin compatibility and electrical performance.

SMP1307-004LF (Skyworks Solutions Inc.) is the secondary recommendation. This part maintains the original 1 Pair Common Cathode configuration and identical 3Ohm resistance at 100mA, 100MHz, ensuring direct electrical compatibility. Active product status and ROHS3 compliance support long-term supply chain stability. The 200V voltage rating and 250mW power dissipation specification provide design margin.

BAP64-05-TP (Micro Commercial Co) maintains the 1 Pair Common Cathode configuration and is electrically compatible. However, obsolete product status limits its suitability for new production. The 100mA current rating is significantly lower than the original 1A specification, restricting application scope.

Frequently Asked Questions (FAQ)

Q: Can MADP-007167-0287DT directly replace HSMP-3814-BLKG without circuit modification?

A: The MADP-007167-0287DT uses a 4 Pair Parallel configuration versus the original 1 Pair Common Cathode topology. Pin-to-pin compatibility must be verified against your specific circuit schematic. Electrical performance characteristics differ, particularly in resistance and capacitance behavior, requiring functional validation.

Q: Why does BAP64-05-TP have lower current rating than the original part?

A: The BAP64-05-TP is rated for 100mA maximum current, compared to the HSMP-3814-BLKG 1A rating. This reflects different design specifications and intended applications. Selection depends on your circuit's actual current requirements at the diode junction.

Q: Are all substitute parts available in the same SOT-23-3 package?

A: Yes. All three substitute parts use SOT-23-3 packaging (also designated TO-236-3 or SC-59), ensuring mechanical and thermal compatibility with the original footprint.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active status indicates ongoing manufacturing and supply chain support. Obsolete parts may have limited inventory and no guaranteed future availability. For production designs, Active status parts (MADP-007167-0287DT and SMP1307-004LF) are preferred.

Q: How do capacitance differences affect RF circuit performance?

A: Capacitance values are specified at different reverse voltages and frequencies. The original part specifies 0.35pF @ 50V, 1MHz. Substitute parts range from 0.3pF to 0.35pF at different bias points. Circuit performance depends on your specific RF frequency and impedance matching requirements. Functional testing is necessary to confirm performance in your application.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 indicates the lowest moisture sensitivity level, requiring no special moisture control during storage or handling. All parts listed, including the original, carry this classification.