P0300LA Alternative / Equivalent / Replacement - TSS Thyristor Surge Suppressor 25V DO-15 | YINT
Are you searching for a P0300LA alternative, P0300LA equivalent, or P0300LA replacement? YINT Electronics offers a direct P0300LA substitute with identical specs to Littelfuse, Bourns, and STMicroelectronics parts for 25V telecom and data line protection.
1. Product Overview
The P0300LA is a thyristor surge suppressor (TSS) that protects 25V telecom and data lines from lightning and power-cross transients. It has an off-state voltage of 25V, switching voltage of 40V, and on-state voltage of 4V. The device switches from high impedance to a low-voltage crowbar state in nanoseconds and handles 150A surge current in the DO-15 package.
Engineers looking for a P0300LA replacement for Littelfuse, Bourns, STMicroelectronics, or ON Semiconductor can confidently specify YINT's P0300LA. It withstands repeated surges without degradation and is suitable for xDSL, ISDN, and RS-485 interfaces.
2. Key Features
Off-State Voltage: 25V — Protects 25V telecom lines
Switching Voltage: 40V max — Fast crowbar trigger
On-State Voltage: 4V max — Minimal clamping loss
Holding Current: 25mA min — Latches until surge clears
Capacitance: 80pF max — Signal-transparent
dI/dt: 500 A/us — Handles fast-rising surges
Repeated Surge Capability — No degradation over life
Package: DO-15 — Proven telecom reliability
RoHS Compliant: Lead-free
3. Recommended YINT Alternative for P0300LA
| Original Part Number | YINT Alternative | Device Type | Package | Notes |
| P0300LA | P0300LA (YINT equivalent) | TSS Thyristor | DO-15 | Drop-in replacement |
4. Key Parameters
| Part Number | P0300LA |
| Package | DO-15 |
| VDRM (V) | 25 |
| Vs (V) | 40 |
| VT (V) | 4 |
| IH (mA) | 25 |
| CO (pF) | 80 |
| Ipp 2/10us (A) | 150 |
| Ipp 8/20us (A) | 150 |
| Ipp 10/1000us (A) | 45 |
5. Cross Reference Guide
| Brand | Original Part | YINT Cross |
| Littelfuse | P0300LA | P0300LA |
| Bourns | P0300LA (class) | P0300LA |
| STMicroelectronics | P0300-class TSS | P0300LA |
| ON Semi | P0300-class TSS | P0300LA |
| Diodes Inc. | P0300-class TSS | P0300LA |
| Taiwan Semi | P0300-class TSS | P0300LA |
| MCC | P0300-class TSS | P0300LA |
| Wayon | P0300-class TSS | P0300LA |
6. Applications
- xDSL and ISDN line interface protection
- Telecom SLIC and line card surge protection
- RS-485 and RS-232 data line protection
- PoE (Power over Ethernet) port protection
- Security and alarm system communication lines
- CATV and broadband access equipment
- ITU-T K.20/K.21 lightning compliance
- Industrial fieldbus communication ports
7. Why Choose YINT
- 19+ years of manufacturing expertise since 2006
- 40+ patents and certifications per MIL-STD and JEDEC
- Global sales network across North America, Europe, Asia
- Full TSS family from P0080 to P3800
- Pin-to-pin compatible with P0300LA from all major brands
- Engineering team for application assistance
- Free samples for testing upon request
- Direct manufacturer pricing with volume discounts
8. FAQ
Q1: Is YINT P0300LA a direct replacement for Littelfuse or Bourns?
A: Yes. Identical specs and DO-15 package. No PCB redesign needed.
Q2: What voltage lines does P0300LA protect?
A: 25V-rated telecom and data lines. The switching voltage is 40V max.
Q3: What is the difference between P0300LA and P0300SA?
A: LA and SA denote package variants (DO-15 through-hole vs SMB surface-mount).
Q4: Can P0300LA handle repeated lightning surges?
A: Yes. TSS crowbar devices withstand repeated surges without degradation.
Q5: What is the off-state capacitance?
A: 80pF max, which keeps signal distortion low on data lines.
Q6: Does YINT provide free samples?
A: Yes. Contact YINT with your project details.
9. Conclusion
YINT Electronics' P0300LA is a reliable, cost-effective replacement for industry-standard TSS thyristor surge suppressors. It delivers 150A surge capability with 40V switching voltage for protecting 25V telecom and data lines. Contact YINT for datasheets, samples, and pricing.
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Need Help Finding the Right Alternative? Contact YINT Electronics at global@yint.com.cn for datasheets, samples, or pricing. |



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