Renesas HZM7.5NB3JTL-E

Overview

HZM7.5NB3JTL-E from Renesas Electronics is a silicon epitaxial planar Zener diode designed for precision voltage stabilization in low-power analog and reference circuits. It delivers a nominal zener voltage of 7.52–7.84 V at 5 mA, with dynamic resistance of 4.0 Ω, power dissipation up to 200 mW, and operates within –55°C to +150°C storage temperature range. It is commonly used in voltage regulation for sensor biasing, ADC reference supplies, and overvoltage protection in industrial control modules.

For engineers reviewing the HZM7.5NB3JTL-E datasheet, HZM7.5NB3JTL-E pinout, HZM7.5NB3JTL-E application, or HZM7.5NB3JTL-E equivalent, key selection criteria include its B3-grade zener voltage tolerance (±2.1% typical), MPAK surface-mount package compatibility with high-density PCB layouts, thermal stability at 0.05 mV/°C near 7.5 V, and compliance with JEITA package code PLSP0003ZC-A.

Technical Context

The HZM7.5NB3JTL-E employs a silicon epitaxial planar junction structure optimized for stable reverse-breakdown behavior under DC and pulsed conditions (P_w = 40 ms). Its zener voltage exhibits a positive temperature coefficient of +0.05 mV/°C at 7.5 V, minimizing drift across ambient temperatures from –25°C to +85°C.

Designed for low-current stabilization, it specifies I_Z = 5 mA test condition, maximum I_R = 2 µA at V_R = 5.0 V, and maintains rd ≤ 4.0 Ω - enabling tight regulation in feedback paths of LDOs and bandgap references where load current remains below 10 mA.

Key Specifications

Pinout & Package

MPAK package (JEITA code PLSP0003ZC-A), 3-terminal surface-mount device with 1.0 mm × 1.3 mm body, 0.35–0.5 mm lead width, and 2.2–3.0 mm terminal pitch. Terminal 1 is NC (no internal connection), Terminal 2 is Anode, Terminal 3 is Cathode - polarity critical for correct reverse-bias operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode voltage stabilization applications.

Compared with BZX84-C7V5 and MMSZ5235B, the HZM7.5NB3JTL-E offers superior voltage accuracy (±2.1% vs. ±5%), lower dynamic impedance (4.0 Ω vs. ≥7 Ω), and smallest PCB footprint (MPAK vs. SOT-23/SOD-123), making it optimal for high-density, precision-stabilized analog subsystems.

Availability

HZM7.5NB3JTL-E is available at Aetrix Electronics and suitable for industrial sensor biasing, ADC reference supplies, overvoltage clamp protection, and LDO feedback stabilization requiring stable component supply with full traceability and lifecycle continuity.

Supply support for HZM7.5NB3JTL-E 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 is a global semiconductor leader delivering microcontrollers, analog, power, and timing solutions for industrial, automotive, and infrastructure markets.

The HZM-N Series targets precision voltage stabilization in compact, high-reliability applications - engineered specifically for low-drift, low-leakage, and high-temperature-stable Zener operation in space-constrained PCBs.

FAQ

What is the exact zener voltage range specified for HZM7.5NB3JTL-E?

The HZM7.5NB3JTL-E has a guaranteed zener voltage range of 7.52 V to 7.84 V when tested at I_Z = 5 mA and T_a = 25°C. This B3-grade specification reflects ±2.1% tolerance around the nominal 7.5 V rating, confirmed in Renesas' R07DS0358EJ0600 datasheet, page 2. The HZM7.5NB3JTL-E achieves this tight tolerance via post-process laser trimming during manufacturing.

Is HZM7.5NB3JTL-E compatible with reflow soldering processes?

Yes, the HZM7.5NB3JTL-E's MPAK package is qualified for standard lead-free reflow profiles per J-STD-020. Its maximum junction temperature rating of 150°C and glass-epoxy PCB compatibility (per Fig.3 in R07DS0358EJ0600) support peak reflow temperatures up to 260°C for ≤30 seconds. The HZM7.5NB3JTL-E must be mounted with Terminal 2 (Anode) and Terminal 3 (Cathode) correctly oriented to avoid reverse-bias failure during assembly.

Does HZM7.5NB3JTL-E have a built-in temperature compensation mechanism?

No, the HZM7.5NB3JTL-E does not include active temperature compensation. Its zener voltage exhibits a measured +0.05 mV/°C temperature coefficient near 7.5 V (R07DS0358EJ0600, page 5), which is inherent to the silicon epitaxial planar junction design. System-level compensation - such as pairing with a negative-TC component in a divider network - is required for zero-drift applications. The HZM7.5NB3JTL-E's coefficient is stable and repeatable, enabling predictable calibration.

Can HZM7.5NB3JTL-E replace a 3-terminal voltage reference IC?

The HZM7.5NB3JTL-E can replace basic 3-terminal references in low-current, non-critical applications - e.g., biasing op-amps or setting comparator thresholds - where its 4.0 Ω dynamic resistance and ±2.1% tolerance suffice. However, it lacks features like initial accuracy better than ±0.1%, ultra-low tempco (<10 ppm/°C), or current-sourcing capability found in IC references. For precision ADC references or closed-loop regulation, the HZM7.5NB3JTL-E serves best as a cost-effective, space-saving alternative only when system-level error budgets allow.

What is the meaning of "B3" and "JTL-E" in HZM7.5NB3JTL-E?

In HZM7.5NB3JTL-E, "B3" denotes the zener voltage grade with tightest tolerance (7.52–7.84 V), while "JTL-E" indicates tape-and-reel packaging: "J" = Renesas internal process code, "T" = taping, "L" = 3,000 pcs per reel, and "E" = RoHS-compliant finish. This matches Renesas' ordering convention in R07DS0358EJ0600, page 1. The HZM7.5NB3JTL-E is shipped in TL format (3,000-unit reels) and conforms to JEDEC standards for moisture sensitivity level (MSL) 1.