Nexperia USA Inc. TDZ9V1J,115

Overview

TDZ9V1J,115 from Nexperia is a single Zener diode in SOD323F (SC-90) package, designed for precision voltage regulation and overvoltage protection in space-constrained PCBs. It delivers a nominal Zener voltage of 9.1 V at 5 mA, with differential resistance ≤100 Ω, reverse current ≤0.50 μA at 7.2 V, temperature coefficient +3.8 mV/K, and total power dissipation up to 500 mW at Tamb ≤25 °C - used in automotive body control modules for ECU reference rail stabilization.

For engineers reviewing the TDZ9V1J,115 datasheet, TDZ9V1J,115 pinout, TDZ9V1J,115 application, or TDZ9V1J,115 equivalent, key selection criteria include Zener voltage tolerance (±1.9%), low thermal resistance (Rth(j-sp) = 25 K/W), AEC-Q101 qualification, and SOD323F footprint compatibility with high-density reflow assembly.

Technical Context

This Zener diode operates in reverse breakdown mode with tightly controlled V_Z (8.92–9.28 V at I_Z = 5 mA) and exhibits positive temperature coefficient (+3.8 mV/K), enabling stable regulation across automotive ambient ranges (−40 °C to +125 °C). Its low differential resistance (≤100 Ω) ensures minimal output voltage variation under load transients.

Thermal performance is optimized via direct cathode pad conduction: R_th(j-sp) = 25 K/W to solder point and R_th(j-a) = 250 K/W in free air. Non-repetitive peak reverse power dissipation is rated at 40 W (t_p = 100 μs), supporting transient surge suppression in 12 V automotive systems.

Key Specifications

Pinout & Package

SOD323F (SC-90) plastic surface-mount package: 2.3–2.7 mm length, 1.15–1.35 mm width, 0.25–0.40 mm height; cathode marked by bar on top surface; optimized for 0.5 mm solder land width and 0.95 mm pad pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Compared with BZX384-B9V1,115, TDZ9V1J,115 offers tighter V_Z tolerance, lower r_dif, and automotive qualification; versus MMSZ5240B-TP, it delivers identical power rating in 45% smaller area but at 9.1 V instead of 10 V - critical for legacy 9 V rail compatibility.

Availability

TDZ9V1J,115 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interfaces, and portable medical diagnostics requiring stable component supply with AEC-Q101 assurance and SOD323F footprint consistency.

Supply support for TDZ9V1J,115 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

Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive-grade quality.

TDZ9V1J,115 belongs to the TDZxJ series of general-purpose Zener diodes engineered for space-constrained voltage regulation and transient protection in automotive and industrial systems where AEC-Q101 compliance and ultra-small SMD packaging are mandatory.

FAQ

What is the maximum steady-state power dissipation for TDZ9V1J,115 at 85 °C ambient?

At T_amb = 85 °C, derated power is 300 mW, calculated using P_tot(T_amb) = P_tot(25 °C) × [1 − (T_amb − 25)/125], based on 150 °C max junction temperature and R_th(j-a) = 250 K/W. This ensures safe operation in engine bay or industrial enclosure environments.

How does the +3.8 mV/K temperature coefficient affect circuit stability?

The positive temperature coefficient means V_Z increases by 3.8 mV per °C rise in junction temperature. In a 9.1 V reference design operating from −40 °C to +125 °C, this results in a total drift of +627 mV - compensated in precision applications using matched NTC networks or digital calibration.

Can TDZ9V1J,115 replace TDZ10J in a 9 V rail design?

No - TDZ10J has V_Z = 9.8–10.2 V, exceeding the 9.1 V target. Substituting would raise reference voltage by ~110 mV, potentially violating microcontroller V_DD tolerance or ADC full-scale range. TDZ9V1J,115's 8.92–9.28 V range is specifically aligned with legacy 9 V systems.

Is reflow soldering profile information available for SOD323F mounting?

Yes - Nexperia specifies JEDEC J-STD-020-compliant reflow: peak temperature 260 °C (max), time above 217 °C = 60–150 s, ramp rate ≤3 °C/s. The SOD323F footprint requires 0.5 mm solder lands and 0.95 mm pad pitch to ensure mechanical reliability and thermal transfer.