HIRK-433AP RF Receiver 433.92MHz Equivalent & Substitute Parts

Part Overview

The HIRK-433AP is an RF receiver module operating at 433.92MHz with AM modulation, designed for general-purpose wireless applications. This component features a sensitivity of -103dBm, operates on a 4.5V to 5.5V supply, and is packaged in a 25-SIP through-hole module configuration. The HIRK-433AP is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	HIRK-433AP
Manufacturer	RF Solutions
Frequency	433.92MHz
Sensitivity	-103dBm
Modulation	AM
Voltage Supply Range	4.5V ~ 5.5V
Current - Receiving	6.8mA
Operating Temperature	-25°C ~ 85°C
Mounting Type	Through Hole
Package / Case	25-SIP Module, 19 Leads
Product Status	Obsolete
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the HIRK-433AP is determined by the following critical parameters:

Frequency Compatibility: Both substitute parts operate at 433MHz, which aligns with the 433.92MHz operating frequency of the main part within the ISM band allocation.

Modulation Protocol: The HIRK-433AP uses AM modulation. The substitute parts (ZPT-4RD and ZPT-4RS) do not specify modulation protocol in the provided data; however, they are listed as manufacturer-recommended equivalents.

Sensitivity Performance: The HIRK-433AP provides -103dBm sensitivity. The substitute parts deliver -121dBm sensitivity, representing improved receiver performance.

Supply Voltage: The HIRK-433AP requires 4.5V to 5.5V operation. The substitute parts operate at 1.8V to 3.6V, requiring voltage regulation or power supply redesign for direct substitution.

Mounting Configuration: The HIRK-433AP uses through-hole mounting in a 25-SIP package. Substitute parts are available in both through-hole (ZPT-4RD, 12-DIP) and surface-mount (ZPT-4RS, 12-SMD) configurations.

Product Status: The HIRK-433AP is obsolete. Both substitute parts (ZPT-4RD and ZPT-4RS) maintain active product status.

Compliance: The HIRK-433AP is RoHS Compliant. Both substitute parts are ROHS3 Compliant and REACH Unaffected.

Parameter Comparison

Parameter	HIRK-433AP	ZPT-4RD	ZPT-4RS
Manufacturer	RF Solutions	RF Solutions	RF Solutions
Frequency	433.92MHz	433MHz	433MHz
Sensitivity	-103dBm	-121dBm	-121dBm
Voltage Supply Range	4.5V ~ 5.5V	1.8V ~ 3.6V	1.8V ~ 3.6V
Operating Temperature	-25°C ~ 85°C	-20°C ~ 85°C	-20°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Surface Mount
Package / Case	25-SIP Module, 19 Leads	12-DIP Module	12-SMD Module
Product Status	Obsolete	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	Not Applicable	Not Applicable

Engineering Selection Recommendations

For Through-Hole PCB Designs: The ZPT-4RD is the direct through-hole mounting equivalent. This part maintains the through-hole configuration of the HIRK-433AP while providing improved sensitivity (-121dBm versus -103dBm). Circuit redesign is required to accommodate the reduced supply voltage range (1.8V to 3.6V versus 4.5V to 5.5V). The ZPT-4RD operates within a narrower temperature range (-20°C to 85°C versus -25°C to 85°C).

For Surface-Mount PCB Designs: The ZPT-4RS provides surface-mount implementation with identical electrical specifications to the ZPT-4RD. This option is suitable for new designs or PCB redesigns incorporating surface-mount technology. The same voltage and temperature considerations apply.

Compliance Considerations: Both substitute parts meet ROHS3 compliance and are REACH Unaffected, exceeding the RoHS compliance of the obsolete HIRK-433AP. This supports regulatory requirements for new product certifications.

Inventory Status: ZPT-4RD maintains 790 pieces in stock; ZPT-4RS maintains 768 pieces in stock, providing supply continuity for the obsolete HIRK-433AP.

Frequently Asked Questions (FAQ)

Q: Can the ZPT-4RD or ZPT-4RS directly replace the HIRK-433AP without circuit modifications?

A: Direct pin-for-pin replacement is not possible. The substitute parts operate at 1.8V to 3.6V supply voltage, while the HIRK-433AP requires 4.5V to 5.5V. Power supply redesign is mandatory. Additionally, the package configurations differ (25-SIP versus 12-DIP or 12-SMD), requiring PCB layout modifications.

Q: What is the frequency compatibility between 433.92MHz and 433MHz?

A: Both frequencies operate within the 433MHz ISM band. The 433.92MHz specification of the HIRK-433AP and the 433MHz specification of the substitute parts are compatible for general-purpose wireless applications within this band allocation.

Q: How does the improved sensitivity of the substitute parts (-121dBm versus -103dBm) affect system performance?

A: Improved sensitivity indicates the receiver can detect weaker signals. This enhancement does not create incompatibility; it represents superior receiver performance. System design should account for this improvement in link budget calculations.

Q: Which substitute part should be selected for new PCB designs?

A: For new designs, the ZPT-4RS (surface-mount) is recommended as it aligns with modern manufacturing practices. For legacy through-hole designs requiring substitution, the ZPT-4RD is appropriate.

Q: Are there temperature range differences that affect substitution?

A: The HIRK-433AP operates from -25°C to 85°C. Both substitute parts operate from -20°C to 85°C. Applications requiring operation below -20°C cannot use the substitute parts without additional thermal management or design modification.

Q: What is the impact of the reduced package size (12-DIP/12-SMD versus 25-SIP)?

A: The substitute parts use smaller packages, reducing PCB footprint and component count. This requires PCB redesign but provides space and cost benefits in new implementations.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message