3R600L Alternative / Equivalent / Replacement

YINT Electronics — Gas Discharge Tube (GDT)

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1. Introduction

The 3R600L is a three-electrode gas discharge tube (GDT) rated at 600V DC breakdown with 10kA surge capability. It protects telecom lines, broadband equipment, and power supplies from lightning strikes and severe transient surges. The device switches from high impedance to low impedance when the voltage across its terminals exceeds 600V, safely diverting surge current to ground. With ultra-low capacitance of 1pF, it preserves signal integrity in high-speed data lines and RF circuits.

The YINT 3R600L-6×8 is a direct replacement for industry-standard 600V three-electrode GDTs from Bourns, Littelfuse, EPCOS/TDK, Eaton, and other major manufacturers. It comes in a standard 6×8mm DIP package with the same pin arrangement, making it a drop-in alternative without PCB modification. The 10kA impulse discharge current rating (8/20µs, 10 hits) provides reliable primary protection for equipment exposed to outdoor and industrial environments.

2. Product Overview

The 3R series is YINT Electronics' line of three-electrode gas discharge tubes covering DC breakdown voltages from 75V to 800V in the 6×8mm DIP package. Three-electrode GDTs offer balanced protection for both signal lines (tip and ring) in telecom and data applications by firing both gaps simultaneously. This symmetrical triggering prevents damaging voltage differentials between the two protected lines during a transient event.

The YINT 3R600L-6×8 is optimized for 600V DC line protection where high surge capacity and low capacitance are critical. It delivers 10kA impulse discharge current (8/20µs) with a fast impulse spark-over voltage of 1400V (1kV/µs). The DC breakdown tolerance of ±20% ensures consistent triggering across production lots. YINT manufactures this GDT with hermetic ceramic-metal construction for stable operation from -40°C to +85°C, making it suitable for outdoor telecom cabinets, base stations, and industrial control panels exposed to harsh environmental conditions.

YINT produces the full 3R series from 3R75L through 3R800L in the 6×8mm package. This complete voltage coverage allows customers to source all three-electrode GDT needs from one manufacturing partner. The 3R600L-6×8 uses proven gas discharge technology with strict process controls for consistent breakdown voltage and surge current performance. YINT's 19+ years of experience in circuit protection manufacturing means every GDT benefits from mature production processes that deliver reliable long-term protection.

3. Key Features

• DC Breakdown: 600V — ±20% tolerance for consistent triggering
• Impulse Spark-over: 1400V — Fast response at 1kV/µs slew rate
• Impulse Discharge: 10kA — 8/20µs, 10 hits, robust surge handling
• Capacitance: 1pF — Ultra-low, preserves high-speed signal integrity
• Three-Electrode Design — Balanced protection for pair-conductor lines
• DIP Package: 6×8mm — Industry-standard through-hole footprint
• Hermetic Seal — Ceramic-metal construction, stable over life
• RoHS Compliant — Lead-free and environmentally friendly

4. Specifications

5. Cross Reference

The 600V three-electrode GDT is a widely used standard in telecom and industrial surge protection. YINT's 3R600L-6×8 is a direct replacement compatible with major brands. Engineers searching for a 3R600L equivalent can confidently choose YINT as a cross-reference option.

6. Comparison with Similar Models

Engineers often compare the 3R600L with nearby voltage variants and competitive 600V GDTs. The table below shows key differences to help select the right GDT for each design.

The YINT 3R600L-6×8 is electrically and mechanically identical to Bourns 3R600L, EPCOS B88069X6001B, and Eaton GT-3R-600. All four three-electrode models deliver 600V DC breakdown, 10kA surge rating, and 1pF capacitance in the same 6×8mm DIP package. For lower-voltage designs, the YINT 3R470L-6×8 offers the same 10kA surge and 1pF capacitance with a 470V DC breakdown threshold. The Littelfuse SL6002A is a 2-electrode SMD GDT with a smaller 5×5mm package and 5kA discharge current, suitable for space-constrained PCB designs where lower surge capacity is acceptable. Choose the YINT 3R600L-6×8 when you need a reliable three-electrode drop-in replacement for Bourns or EPCOS 600V GDTs with identical electrical characteristics and full 10kA surge capability. Its 1400V impulse spark-over ensures fast triggering under steep transient waveforms, protecting sensitive downstream equipment without excessive delay.

7. Applications

• Telecom central office and access network line card primary protection (tip/ring)
• Broadband and xDSL subscriber line overvoltage protection
• CATV and RF distribution amplifier input surge protection
• Base station antenna feed line and power port transient suppression
• Industrial Ethernet and RS-485/PROFIBUS communication port protection
• Lightning surge protection per ITU-T K.12, ITU-T K.20, and IEC 61643-311
• UPS and DC power distribution rail surge clamping
• LED street lighting and smart grid communication port protection
• Security, fire alarm, and building management system communication lines
• EV charging station communication interface surge protection (PLC lines)
• Medical equipment signal line protection (non-patient connected)
• Solar inverter DC-side communication and monitoring port protection

8. Why Choose YINT

• 19+ years of manufacturing expertise in circuit protection and power semiconductors since 2006
• 40+ patents and certifications with robust process control per ITU-T and IEC standards
• Global sales network serving North America, Europe, Asia, and Latin America with responsive service
• Full 3R series from 75V to 800V for one-stop three-electrode GDT sourcing across all voltage ratings
• Direct OEM replacement — pin-to-pin compatible with 3R600L from Bourns, EPCOS, Eaton, and other brands
• Engineering team available for application assistance and cross-reference verification
• Free samples for testing and qualification upon request
• Direct manufacturer pricing with volume discounts available
• Short lead times with active production status — no obsolescence risk
• All devices fully RoHS compliant with lead-free ceramic-metal construction

9. Ordering Information

10. FAQ

Q1: Is YINT 3R600L-6×8 a direct replacement for Bourns 3R600L?
A: Yes. The YINT 3R600L-6×8 has identical 600V DC breakdown, 10kA surge, 1pF capacitance, and 6×8mm DIP package. It drops in without PCB redesign.

Q2: What is the difference between 3-electrode and 2-electrode GDTs?
A: Three-electrode GDTs provide balanced protection for paired conductors (tip and ring) by triggering both gaps simultaneously. Two-electrode GDTs protect a single line. Use 3-electrode for telecom and data pair protection.

Q3: What is the impulse spark-over voltage of 3R600L?
A: 1400V measured at 1kV/µs slew rate. This ensures fast triggering under steep lightning transients while maintaining the 600V DC hold-off for normal operation.

Q4: Can 3R600L be used for 600V AC mains protection?
A: No. GDTs are not recommended for direct AC mains protection. Use varistors or TVS diodes for AC power lines. The 3R600L is designed for telecom and signal line DC protection.

Q5: What is the lifetime of the 3R600L under repeated surge events?
A: The 3R600L is rated for 10 hits at 10kA 8/20µs waveform. Under lower surge levels, it can withstand hundreds to thousands of events. For extreme surge environments, pair with a PTC thermistor for additional current limitation.

Q6: How does the 3R600L compare with the YINT 3R470L?
A: Both share the same 6×8mm package, 10kA surge rating, 1pF capacitance, and ±20% tolerance. The 3R600L triggers at 600V DC breakdown with 1400V impulse spark-over, while the 3R470L triggers at 470V DC with 1200V impulse spark-over. Use 3R600L for higher-voltage 600V telecom lines and 3R470L for 470V-rated equipment.

11. Conclusion

YINT Electronics' 3R600L-6×8 is a reliable, high-performance three-electrode GDT replacement for industry-standard models from Bourns, EPCOS/TDK, Eaton, Littelfuse, and other major brands. It delivers 600V DC breakdown, 10kA surge capacity, and 1pF capacitance in a standard 6×8mm DIP package for telecom, broadband, and industrial surge protection.

Contact YINT Electronics at global@yint.com.cn for datasheets, samples, or pricing. Our engineering team is ready to assist with cross-references and application support.