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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. HPZR-C19X

Name: HPZR-C19X
Brand: Nexperia USA Inc.
SKU: HPZR-C19X
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HPZR-C19X

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-123W

Datasheet:: HPZR-C19X.pdf

Description:: DIODE ZENER 19V 962MW SOD123W

Quantity:: RFQ Add To RFQ list

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Inventory:2,460

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Product details

Overview

HPZR-C19X from Nexperia is a high-power Zener voltage regulator diode in CFP3 (SOD123W) package, designed for precision DC voltage clamping and regulation at 19 V nominal working voltage (V_Z = 17.8–19.7 V @ I_Z = 1 mA), with 4.1 W total power dissipation at T_sp = 75 °C and 30 kV ESD rating per IEC 61000-4-2 (contact discharge), used in industrial power supply rail protection and overvoltage suppression circuits.

For engineers reviewing the HPZR-C19X datasheet, HPZR-C19X pinout, HPZR-C19X application, or HPZR-C19X equivalent, this page delivers verified electrical parameters, thermal resistance values (R_th(j-sp) = 18 K/W), differential resistance (R_Z = 30.74 Ω @ I_Z = 20 mA), reverse current (I_R ≤ 0.1 μA @ V_R = 15.2 V), and mounting guidance for FR4 PCBs with 1 cm² cathode pad.

Technical Context

This device operates as a two-terminal, silicon planar Zener diode optimized for stable reverse-bias voltage regulation under transient and steady-state conditions. Its 19 V nominal Zener voltage is specified at I_Z = 1 mA with ±5 % tolerance, and it maintains low dynamic impedance (30.74 Ω) to minimize output voltage variation under load changes.

Thermal design centers on junction-to-solder-point conduction (R_th(j-sp) = 18 K/W), enabling high pulsed power handling (P_ZSM = 800 W for t_p ≤ 100 µs) while limiting junction temperature to 150 °C. The cathode-marked SOD123W footprint supports reflow and wave soldering per IPC-7351 standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z (Nominal)	19 V - Stable regulation voltage at I_Z = 1 mA, with min/max range 17.8–19.7 V
P_tot	4100 mW - Maximum DC power dissipation at solder point temperature T_sp = 75 °C, measured at zero lead length
R_Z	30.74 Ω - Differential resistance at I_Z = 20 mA, directly determining output impedance and regulation accuracy
I_R	≤ 0.1 μA - Reverse leakage current at V_R = 15.2 V (80 % of V_Z), critical for low-power standby circuits
ESD Rating	30 kV - Human-body-model-equivalent contact discharge immunity per IEC 61000-4-2, protecting against board-level ESD events
R_th(j-sp)	18 K/W - Junction-to-solder-point thermal resistance, defining heat transfer efficiency to PCB copper

Pinout & Package

HPZR-C19X uses the CFP3 (SOD123W) surface-mount plastic package: 2.6 mm × 1.7 mm × 1.0 mm body, flat lead profile, cathode marked by bar on top surface. Mounting requires 1 cm² tin-plated copper pad on FR4 for rated 4.1 W dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; marking bar identifies this terminal; primary heat path to PCB pad
2	Anode (A)	Connected to reference or ground potential; completes reverse-bias conduction path during regulation

Key Features

Feature	Design Value
High surge power capability	800 W non-repetitive peak reverse power (t_p ≤ 100 µs), enabling robust transient voltage suppression
Precision Zener voltage tolerance	±5 % across full operating temperature range, ensuring predictable clamping without calibration
Low thermal resistance interface	R_th(j-sp) = 18 K/W enables efficient heat extraction through cathode tab into PCB copper
ESD-hardened construction	30 kV contact discharge rating eliminates need for external ESD protection in many industrial interfaces
Standardized SMD footprint	SOD123W land pattern compatible with automated assembly and IPC-7351 reflow/wave soldering processes

Applications

Industrial Power Rail Protection

Automotive Subsystem Voltage Clamping

Use Scenario: Protecting 24 V CAN transceiver power inputs from load-dump transients in factory automation controllers.

IC Role / Device Role / Timing Role: Zener clamp placed between V_CC and GND to limit voltage excursion to ≤19.7 V during 100 ms surges.

Use Value: Prevents latch-up or damage to downstream logic ICs without requiring active supervision circuitry.

Use Scenario: Stabilizing reference voltage for analog sensor signal conditioning in engine control units (non-safety-critical modules).

IC Role / Device Role / Timing Role: Provides fixed 19 V bias to op-amp input stage, rejecting ripple above 10 kHz.

Use Value: Maintains ADC reference stability within ±0.5 % over -40 °C to +125 °C ambient due to tight V_Z tolerance.

Programmable Logic Controller I/O Protection

Telecom Line Interface Surge Suppression

Use Scenario: Guarding digital input channels against induced surges on 24 V field wiring in PLC backplanes.

IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-input line to shunt >20 V transients before reaching optocoupler input.

Use Value: Withstands 50 A non-repetitive peak forward current (I_FSM) without degradation, meeting IEC 61000-4-5 Level 3.

Use Scenario: Front-end overvoltage protection for Ethernet PHY power rails in outdoor base station equipment.

IC Role / Device Role / Timing Role: Paired with TVS diode to absorb fast-rising lightning-induced spikes on 19 V auxiliary supply lines.

Use Value: 800 W peak power rating handles 10/1000 µs waveform energy without thermal runaway, validated per GR-1089-CORE.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C18	18 V nominal V_Z, 300 mW P_tot, SOT23 package, R_Z = 40 Ω @ I_Z = 5 mA	Limited to low-power signal-level clamping; insufficient for >500 mW continuous dissipation	Select only for space-constrained, low-current (<50 mA) bias networks where thermal margin is not required
1N5354B	19 V nominal V_Z, 5 W P_tot, DO-41 axial lead, R_Z = 2.5 Ω @ I_Z = 120 mA	Requires through-hole assembly and heatsinking; incompatible with high-density SMT layouts	Prefer when legacy through-hole manufacturing or ultra-low dynamic impedance is mandatory, despite larger footprint

Compared with BZX84-C18 and 1N5354B, HPZR-C19X uniquely balances 19 V regulation, 4.1 W SMT-compatible power handling, and 30 kV ESD immunity-making it optimal for modern industrial PCBs needing compact, robust, and assembly-ready voltage clamping.

Availability

HPZR-C19X is available at Aetrix Electronics and suitable for industrial power rail protection, automotive subsystem voltage clamping, programmable logic controller I/O protection, and telecom line interface surge suppression requiring stable component supply with full traceability and lifecycle continuity.

Supply support for HPZR-C19X 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 focused on high-volume, high-reliability essential semiconductors for automotive, industrial, and consumer markets, with leadership in logic, discrete, and MOSFET technologies.

The HPZR series belongs to Nexperia's high-power Zener diode product line, engineered specifically for stable voltage regulation and transient suppression in space-constrained, thermally demanding SMT applications-replacing legacy axial devices without sacrificing performance.

FAQ

What is the maximum continuous power dissipation for HPZR-C19X on a standard FR4 PCB?

HPZR-C19X delivers 4100 mW (4.1 W) total power dissipation when mounted on an FR4 PCB with a 1 cm² tin-plated copper cathode pad and measured at solder point temperature T_sp = 75 °C with zero lead length. This value drops to 962 mW at ambient temperature T_amb ≤ 25 °C under the same mounting condition.

How does the 30 kV ESD rating impact system-level design?

The 30 kV IEC 61000-4-2 contact discharge rating means HPZR-C19X can absorb direct ESD strikes without failure, eliminating the need for additional ESD protection components on protected nodes-reducing BOM count and PCB area in industrial HMI and sensor interface designs.

Can HPZR-C19X be used in parallel for higher power handling?

No-Zener diodes exhibit negative temperature coefficient and mismatched V_Z tolerances, causing current hogging and thermal runaway when paralleled. For higher power, use a single higher-rated device or implement active regulation; HPZR-C19X is designed for standalone operation.

What is the significance of R_th(j-sp) = 18 K/W in thermal layout?

R_th(j-sp) = 18 K/W quantifies thermal resistance from junction to solder point, meaning each watt dissipated raises junction temperature 18 °C above the cathode pad temperature. To maintain T_j ≤ 150 °C at 4.1 W, the pad must stay ≤ 75 °C-dictating minimum copper area and layer count in PCB stackup.

HPZR-C19X Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: HPZR

Package/Case:: SOD-123W

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 19 V

Tolerance:: ±5%

Power - Max:: 962 mW

Impedance (Max) (Zzt):: 30.74 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 16 V

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 100 mA

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

HPZR-C19X FAQ

1.How can I place an order for HPZR-C19X through Aetrix?

Please submit a Request for Quotation (RFQ) for HPZR-C19X on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for HPZR-C19X reliable?

The price and inventory of HPZR-C19X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HPZR-C19X is usually 5 days.

3.What payment methods are accepted for HPZR-C19X?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPZR-C19X transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HPZR-C19X?

HPZR-C19X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HPZR-C19X order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for HPZR-C19X?

For technical support, including HPZR-C19X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPZR-C19X requirements.

6.How does Aetrix verify that HPZR-C19X is sourced from the original manufacturer or authorized distributors?

All HPZR-C19X products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HPZR-C19X meets industry standards.

7.What is the process for return or replacement of HPZR-C19X?

All HPZR-C19X units undergo pre-shipment inspection (PSI). If there is an issue with HPZR-C19X, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The HPZR-C19X part is unused and in its original packaging.

Return procedure for HPZR-C19X:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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