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onsemi MMT10B230T3
- Part No.:
- MMT10B230T3
- Manufacturer:
- onsemi
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
MMT10B230T3.pdf
- Description:
- THYRISTOR 170V 100A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MMT10B230T3 from onsemi is a bidirectional thyristor surge protective device (TSPD) designed for secondary overvoltage protection in telecom line interfaces. It features 265 V breakover voltage (min), 100 A 10×1000 µs surge current rating, and fails short-circuit when overstressed-ensuring continued circuit protection. It is used in customer-premises telecom equipment to meet Bellcore 1089, ITU K.20/K.21, and IEC 950 requirements.
For engineers reviewing the MMT10B230T3 datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping behavior, guaranteed 100 A surge capability across −20°C to +65°C, fail-safe shorting mode, SMB (DO-214AA) SMT package compatibility, and compliance with GR-1089 second-level surge testing.
Technical Context
The MMT10B230T3 operates as a breakover-triggered crowbar device: it remains high-impedance until transient voltage exceeds its 265–290 V breakover threshold, then latches into low-impedance conduction until surge current falls below 150–270 mA holding current. Its dv/dt immunity exceeds 2000 V/s, minimizing false triggering from fast transients.
It delivers bidirectional protection without polarity sensitivity, exhibits minimal voltage variation with surge amplitude or slew rate, and maintains stable off-state leakage (<2.0 µA at 50 V) across −40°C to +125°C operating junction temperature. Its 1.53 V on-state voltage at 1.0 A supports low-power dissipation during clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakover Voltage (VBO) | 265–290 V (min–max); defines precise clamping initiation threshold for both polarities under 60 Hz/100 V/s test conditions |
| Surge Current Rating | 100 A peak (10×1000 µs waveform); validated across −20°C to +65°C ambient, enabling robust secondary telecom line protection |
| Holding Current (IH) | 150–270 mA; ensures reliable self-reset after surge decay, preventing latch-up in low-current telecom loops |
| Off-State Leakage (ID1) | <2.0 µA at 50 V; minimizes standby power loss and avoids false triggering in high-impedance tip/ring interfaces |
| Critical dv/dt | 2000 V/s minimum; suppresses spurious turn-on from fast-rising noise or ringing on analog telecom lines |
| On-State Voltage (VT) | 1.53 V typical at 1.0 A; limits power dissipation during clamping to sustain reliability in repeated surge events |
| Capacitance | 65–200 pF at 1–2 V bias; preserves signal integrity for voice-band (0.3–3.4 kHz) and DSL frequencies up to ~2 MHz |
Pinout & Package
SMB package (JEDEC DO-214AA, Case 403C), surface-mount, non-polarized two-terminal device. Dimensions: 4.06 × 3.30 × 2.26 mm (L × W × H). Marking: "AYWW RPDx" where x = F/G/J indicates Pb-free option.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity assignment required |
| MT2 | Anode/Cathode (bidirectional) | Complementary terminal to MT1; forms symmetrical crowbar path for tip/ring or differential line protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional crowbar action | Enables single-device protection of AC-coupled telecom lines (e.g., POTS tip/ring) without external diodes or polarity planning |
| Fail-safe short-circuit mode | Guarantees continued overvoltage blocking even after end-of-life stress, eliminating risk of open-circuit unprotected operation |
| GR-1089 Level 2 compliance (500 A, 2×10 µs) | Validates suitability for carrier-grade secondary protection in outside-plant interface circuits per Telcordia requirements |
| Stable VBO vs. temperature | 0.08 %/°C coefficient ensures predictable clamping across −40°C to +125°C junction range, critical for uncontrolled environments |
| Pb-free SMB packaging | Supports RoHS-compliant manufacturing with standard reflow profiles; footprint compatible with legacy DO-214AA assembly processes |
Applications
| DSL Line Interface Protection | VoIP Gateway Tip/Ring Protection |
|---|---|
Use Scenario: Protects ADSL/VDSL line drivers and receivers from lightning-induced surges entering via copper twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional crowbar clamping device placed between tip/ring and line transformer primary. Use Value: Clamps transients above 265 V while maintaining <2 µA leakage-preserving DSL signal-to-noise ratio and avoiding false disconnects. |
Use Scenario: Secures analog telephony ports in residential VoIP gateways against induced surges from nearby power lines or ESD events. IC Role / Device Role / Timing Role: Secondary surge protector downstream of gas discharge tube (GDT) or PPTC, providing fast-response clamping. Use Value: 100 A surge rating and fail-short behavior ensure sustained protection without compromising voice call continuity during repeated surges. |
| ISDN BRI Protection | Alarm Panel Communication Lines |
Use Scenario: Shields ISDN Basic Rate Interface (2B+D) circuits in PBX or terminal adapters from cross-talk and induction surges. IC Role / Device Role / Timing Role: Bidirectional overvoltage clamp on each B-channel pair and D-channel pair. Use Value: Symmetrical 265 V breakover and 2000 V/s dv/dt immunity prevent false triggering during high-speed digital signaling (144 kbps). |
Use Scenario: Protects wired security alarm panels connected to central monitoring stations via leased telephone lines. IC Role / Device Role / Timing Role: Fail-safe secondary protector installed at panel line interface, upstream of line driver ICs. Use Value: Short-circuit failure mode guarantees alarm signals remain blocked during fault-preventing undetected loss of supervision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thyristor surge protector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SP1003-020 | 220 V breakover voltage; 100 A 8/20 µs rating; TO-220 package (through-hole) | Designed for primary protection; higher capacitance (~300 pF) limits use in high-frequency DSL | Select when through-hole mounting is required and lower clamping voltage suffices for upstream protection stages |
| Vishay V130LA20AP | 130 V RMS (184 V peak) varistor-based; no latching behavior; degrades gradually with surge exposure | Lacks fail-safe shorting; requires coordination with upstream fuse or PPTC for end-of-life safety | Choose only for cost-sensitive, non-safety-critical applications where gradual degradation is acceptable |
Compared with SP1003-020 and V130LA20AP, the MMT10B230T3 provides higher, more stable clamping voltage (265 V), intrinsic fail-short safety, and SMT SMB footprint-making it optimal for secondary telecom line protection where reliability, signal integrity, and automated assembly are essential.
Availability
MMT10B230T3 is available at Aetrix Electronics and suitable for DSL line interface protection, VoIP gateway tip/ring protection, ISDN BRI circuits, and alarm panel communication lines requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MMT10B230T3 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and communications markets.
The MMT10B230T3 belongs to onsemi's Thyristor Surge Protector (TSPD) product line, engineered specifically for secondary overvoltage protection in telecom infrastructure-balancing high surge robustness, fail-safe behavior, and signal-preserving low capacitance.
FAQ
What is the clamping voltage behavior of the MMT10B230T3 during surge events?
The MMT10B230T3 does not clamp like a TVS diode; instead, it operates as a crowbar device. Once transient voltage exceeds its 265–290 V breakover threshold, it switches to low-impedance conduction and holds until current drops below 150–270 mA. This results in near-zero clamping voltage during conduction-typically 1.53 V at 1.0 A-ensuring effective energy diversion without voltage overshoot.
Is the MMT10B230T3 suitable for primary surge protection in telecom applications?
No-the MMT10B230T3 is specified as a secondary protector, intended for use downstream of primary protectors such as GDTs or high-energy MOVs. Its 100 A 10×1000 µs rating and fail-short behavior align with GR-1089 Level 2 requirements for secondary protection, not Level 1 primary surge handling. Using it alone on exposed lines risks premature failure.
Does the MMT10B230T3 require external circuitry to reset after a surge event?
No. The MMT10B230T3 resets automatically when surge current decays below its holding current (150–270 mA). No external gate control, timing circuit, or power cycling is needed. This self-resetting behavior enables unattended operation in telecom equipment deployed in remote locations.
How does the MMT10B230T3 compare to varistors in telecom line protection?
Unlike varistors-which degrade with each surge and lack fail-safe behavior-the MMT10B230T3 offers consistent performance over lifetime and fails short-circuit, preserving protection integrity. Its lower capacitance (65–200 pF vs. >500 pF for many varistors) also better preserves voice and DSL signal fidelity, making it preferred for secondary telecom line stages.
Can the MMT10B230T3 be used in DC power line protection?
The MMT10B230T3 is optimized for AC telecom line protection and is not recommended for DC power rails. Its bidirectional symmetry and breakover mechanism assume alternating polarity transients. In DC systems, sustained overvoltage could cause continuous conduction and thermal runaway unless current is externally limited below holding current-requiring additional design constraints not inherent to the MMT10B230T3.
MMT10B230T3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Breakover:
- 265V
- Voltage - Off State:
- 170V
- Voltage - On State:
- -
- Current - Peak Pulse (8/20µs):
- -
- Current - Peak Pulse (10/1000µs):
- 100 A
- Current - Hold (Ih):
- -
- Number of Elements:
- -
- Capacitance:
- 200pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
MMT10B230T3 FAQ
1.How can I place an order for MMT10B230T3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMT10B230T3 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 MMT10B230T3 reliable?
The price and inventory of MMT10B230T3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMT10B230T3 is usually 5 days.
3.What payment methods are accepted for MMT10B230T3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMT10B230T3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMT10B230T3?
MMT10B230T3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMT10B230T3 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 MMT10B230T3?
For technical support, including MMT10B230T3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMT10B230T3 requirements.
6.How does Aetrix verify that MMT10B230T3 is sourced from the original manufacturer or authorized distributors?
All MMT10B230T3 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 MMT10B230T3 meets industry standards.
7.What is the process for return or replacement of MMT10B230T3?
All MMT10B230T3 units undergo pre-shipment inspection (PSI). If there is an issue with MMT10B230T3, 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 MMT10B230T3 part is unused and in its original packaging.
Return procedure for MMT10B230T3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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