Renesas RD5.6S-T2-A

Overview

RD5.6S-T2-A from Renesas Electronics is a 200 mW, 5.29–5.94 V zener diode in Super Mini Mold (SMD) package, designed for precision voltage regulation and surge suppression in low-power analog circuits. It delivers 5 mA test current, 80 Ω dynamic impedance, and 5 μA reverse leakage at 2.5 V, supporting constant-voltage reference and waveform clipping in consumer power supplies.

For engineers reviewing the RD5.6S-T2-A datasheet, RD5.6S-T2-A pinout, RD5.6S-T2-A application, or RD5.6S-T2-A equivalent, key selection criteria include zener voltage tolerance (±5.7% at 5.6 V), thermal coefficient behavior, PCB space constraints of the 2.5 × 1.7 mm package, and compatibility with 200 mW derated operation on standard FR-4 boards.

Technical Context

This device operates as a two-terminal silicon zener diode with sharp reverse breakdown at nominal 5.6 V, tested under pulsed 40 ms conditions per JEDEC JESD201. Its dynamic impedance of 80 Ω at 5 mA enables stable regulation under moderate load transients.

The RD5.6S-T2-A exhibits a negative temperature coefficient near zero crossing - typical for mid-voltage zeners - and is rated for junction temperatures up to 150°C. It complies with Renesas' Standard quality grade, targeting non-safety-critical applications including office equipment and audio systems.

Key Specifications

Pinout & Package

RD5.6S-T2-A uses a 2-pin Super Mini Mold (SMD) package with cathode indicated by a molded band. No internal terminals beyond anode and cathode; polarity must be observed during placement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar zener diode applications.

Compared with RD5.6S-T2-A, BZX55C5V6 offers higher surge robustness but sacrifices SMT compatibility, while MMSZ5232B improves regulation precision at cost of reduced transient immunity and different thermal profile - making RD5.6S-T2-A optimal for compact, cost-sensitive 5 V clamp/reference roles with defined 10 μs surge exposure.

Availability

RD5.6S-T2-A is available at Aetrix Electronics and suitable for USB peripheral power regulation, audio amplifier bias reference, and microcontroller reset circuitry requiring stable component supply across production volumes and design refresh cycles.

Supply support for RD5.6S-T2-A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a Japanese semiconductor manufacturer formed in 2010 via merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices for industrial and consumer markets.

The RD2.0S–RD150S series was developed to deliver standardized, low-profile zener diodes for cost-sensitive voltage reference and protection functions in mass-produced electronics - emphasizing consistency, SMT compatibility, and JEDEC-compliant parametric grading.

FAQ

What is the exact zener voltage tolerance of RD5.6S-T2-A at 5 mA test current?

The RD5.6S-T2-A has a guaranteed zener voltage range of 5.29 V to 5.94 V at I_Z = 5 mA, corresponding to ±5.7% tolerance about the nominal 5.6 V value. This specification is verified per Renesas datasheet D11444EJ6V0DS, page 3, and applies to all units within the B-class grading. The RD5.6S-T2-A maintains this tolerance under pulsed 40 ms testing conditions at 25°C ambient.

Does RD5.6S-T2-A support reflow soldering, and what are its peak temperature limits?

Yes, RD5.6S-T2-A is qualified for standard Pb-free reflow soldering per J-STD-020. Its maximum peak temperature is 260°C for 10 seconds, consistent with its Super Mini Mold epoxy package construction. The device's 150°C maximum junction temperature and thermal resistance characteristics ensure reliability when mounted on 1.6 mm FR-4 PCBs with typical pad layouts, as confirmed in Figure 1 of the RD2.0S–RD150S datasheet.

Can RD5.6S-T2-A be used as a substitute for a 5.1 V zener in an existing design?

No - RD5.6S-T2-A is not a direct substitute for a 5.1 V zener due to its higher nominal voltage (5.6 V vs. 5.1 V) and distinct dynamic impedance (80 Ω vs. typically 130 Ω for RD5.1S). Using RD5.6S-T2-A in place of RD5.1S-T2-A would raise regulated voltage by ~0.5 V, potentially exceeding IC input tolerances. Always verify operating point shift and thermal dissipation before interchanging zener voltages.

What is the reverse leakage current specification for RD5.6S-T2-A, and at what voltage is it measured?

RD5.6S-T2-A specifies a maximum reverse leakage current (I_R) of 5 μA at V_R = 2.5 V, per datasheet page 3. This parameter reflects off-state conduction before breakdown onset and is critical for low-power battery-backed circuits. The value is measured at 25°C ambient and remains stable across the –55°C to +125°C storage range, supporting reliable performance in wide-temperature consumer applications.

Is RD5.6S-T2-A compliant with RoHS and REACH regulations?

Yes, RD5.6S-T2-A meets EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006 requirements, as confirmed by Renesas Electronics' material declarations and compliance documentation. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and its Super Mini Mold package uses halogen-free epoxy formulation - fully documented in Renesas' environmental reports dated 2006 onward.