ST-0800-BLT-STD Equivalent & Substitute Parts

Part Overview

The ST-0800-BLT-STD is a Gas Discharge Tube (GDT) rated at 800V with 2-pole through-hole configuration, manufactured by Bourns Inc. under the Sparctube™ ST-0800 series. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Gas Discharge Tubes serve as surge protection devices in electronic circuits. The obsolete status of this part necessitates evaluation of active alternative components that maintain electrical and mechanical compatibility with existing designs.

Substiute Parts

ST-0800-BLT-STD

Bourns Inc.In Stock: 3382ST-0800-BLT-STD Datasheet

Current PartRFQ

B88069X2140T502

EPCOS - TDK ElectronicsIn Stock: 10390B88069X2140T502 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ST-0800-BLT-STD is determined by the following critical parameters:

• Voltage Rating (800V DC Spark Over): The substitute must match the nominal spark-over voltage to ensure equivalent surge protection performance in the circuit.
• Pole Configuration (2-Pole): The electrical topology requires a 2-pole device to maintain circuit protection architecture.
• Mounting Type (Through Hole): Physical board integration requires through-hole mounting compatibility.
• Package Form (Axial Cylinder): The mechanical envelope and lead configuration must be compatible with existing PCB layouts.
• Fail Mode (No Fail Short): The device must not short upon failure to maintain circuit integrity.
• Regulatory Compliance (ROHS3): Environmental and hazardous substance restrictions must be met.

The identified substitute B88069X2140T502 satisfies all critical substitution criteria across these parameters.

Parameter Comparison

Engineering Selection Recommendations

The B88069X2140T502 manufactured by EPCOS - TDK Electronics is a direct functional equivalent for the obsolete ST-0800-BLT-STD. Selection is based on the following factors:

• Electrical Equivalence: Identical 800V DC spark-over voltage and 2-pole configuration ensure equivalent surge protection performance.
• Mechanical Compatibility: Axial cylinder through-hole package maintains PCB layout compatibility without redesign.
• Active Product Status: The B88069X2140T502 is classified as active, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both ROHS3 compliance and identical ECCN/HTSUS classifications confirm regulatory alignment.
• Tolerance Consideration: The ±15% tolerance of the substitute is within acceptable engineering variance for gas discharge tube applications and does not compromise circuit protection function.

Frequently Asked Questions (FAQ)

Q: Can the B88069X2140T502 be used as a direct replacement for ST-0800-BLT-STD without circuit modification?

A: Yes. Both components share identical voltage ratings, pole configuration, mounting type, and package form. No circuit redesign is required for substitution.

Q: What is the significance of the ±15% tolerance in the substitute versus the ±12% tolerance in the original part?

A: Both tolerance ranges are within standard specifications for gas discharge tubes. The ±15% tolerance of the B88069X2140T502 does not affect its function as a surge protection device at the 800V rating.

Q: Why is the impulse discharge current specified for the substitute but not for the original part?

A: The impulse discharge current (10kA) is a performance characteristic of the B88069X2140T502. The absence of this specification in the original part documentation does not indicate incompatibility; it reflects differences in manufacturer data sheet conventions.

Q: Are there any packaging differences between the two components?

A: The ST-0800-BLT-STD is supplied in standard packaging, while the B88069X2140T502 is available in Cut Tape (CT) format. Both maintain identical axial cylinder physical dimensions suitable for through-hole PCB assembly.

Q: What is the inventory status of the substitute part?

A: The B88069X2140T502 has 10,373 pieces in stock as new original inventory, providing reliable supply availability for production and replacement applications.