043-0106-01-LF datasheet: Complete specs & test data

2026-01-20 17:29:19

This consolidated reference brings together critical specifications, validated test results, and practical integration guidance for the 043-0106-01-LF. Designed for engineers to streamline evaluation, procurement, and production verification.

Product Background & Part Identification

Part Description & Intended Applications

The 043-0106-01-LF is a high-performance, compact lead-free component designed for circuit protection and signal-conditioning within industrial and consumer power subsystems. This component is specifically engineered for environments where PCB area is constrained and RoHS compliance is mandatory.

Key Features:

RoHS lead-free finish
Versatile axial/radial form factor
High surge current resilience
Stable electrical tolerance across temperature

Application Example:

Ideal for board-level surge protection modules in 24V industrial I/O rails and power distribution units.

Ordering Codes & Variants

Code Suffix	Meaning	Procurement Tip
-LF	Lead-free finish	Mandatory for RoHS compliance requirements.
-T	Tape & Reel	Optimized for automated SMT/THT placement.
-Vx	Voltage/Tolerance variant	Match carefully with system voltage margins.

Electrical & Performance Specifications

Key Electrical Parameters

Parameter	Typical Rating	Test Conditions
Working Voltage (Vw)	50 V	Ta = 25°C
Clamping/Threshold	350 V @ 1 A	1 ms pulse
Series Resistance (Rdc)	0.25 Ω	Measured @ 25°C
Leakage Current		V = Vw, Ta = 25°C

Visual Data: Thermal Derating Analysis

-40°C (Full Performance) 25°C (Nominal) 125°C (Max Limit)

Note: Continuous current capability decreases linearly as ambient temperature exceeds 25°C. For long-term reliability (MTBF), maintain junction temperatures within 80% of maximum ratings.

Mechanical Dimensions & Environmental Ratings

Mechanical Specifications

Dimension	Nominal	Tolerance
Body Length	10.0 mm	±0.2 mm
Body Width	4.5 mm	±0.1 mm
Lead Spacing	5.08 mm	±0.15 mm

Reliability Standards

Stress Test	Limit / Condition
Thermal Cycling	-40 to +125°C, 100 cycles
Vibration	10–2000 Hz, 10 g
Mechanical Cycles	≥ 10,000 cycles

Integration & Verification Checklist

Footprint Verification: Match mechanical drawings with a 0.15 mm tolerance allowance for lead spacing.
Thermal Strategy: Derate working voltage by 20–30% for elevated ambient temperatures; implement thermal vias.
Testability: Incorporate dedicated PCB test points for in-circuit leakage and clamp verification.

Production QA Check:

Leakage Spot-Test

Body Length ±0.2 mm

Solderability 100% Visual

Frequently Asked Questions

What are the recommended electrical specs to check first for 043-0106-01-LF?

Priority should be given to working voltage, clamping threshold at specified pulse current, and steady-state leakage. These values ensure the device protects the circuit without introducing parasitic losses. Always verify these under your system's specific ambient conditions.

How should I interpret thermal derating when designing PCBs for this part?

Derating requires reducing allowable continuous load as temperature rises. Utilize the published θJA (Thermal Resistance) to calculate junction temperature based on your PCB copper area. It is vital to keep the junction temperature below the maximum rated limit to ensure long-term field reliability.

What incoming inspection steps are essential to ensure datasheet compliance?

Key steps include: validating the -LF suffix for RoHS compliance, measuring critical dimensions using go/no-go gauges, and performing electrical spot-checks (leakage and resistance) on a statistically significant sample size per lot.

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