My Inquiry
My Account
Taiwan Semiconductor Corporation P6SMB120C
- Part No.:
- P6SMB120C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB120C.pdf
- Description:
- 600W, 120V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,277
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB120C from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal interfaces. It features a standoff voltage of 97.2 V, breakdown voltage range of 108–132 V at 1 mA, clamping voltage of 173 V at 3.6 A peak pulse current, and operates across –55°C to +150°C junction temperature. It is used in switching mode power supplies and automotive electronics to absorb ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P6SMB120C datasheet, P6SMB120C pinout, P6SMB120C application, or P6SMB120C equivalent, key selection criteria include unidirectional vs. bidirectional configuration (C suffix = bidirectional), DO-214AA (SMB) package compatibility, 600 W peak pulse power rating, 173 V clamping voltage under 10/1000 µs surge, and compliance with J-STD-020 moisture sensitivity level 1.
Technical Context
The P6SMB120C implements a glass-passivated silicon avalanche junction optimized for fast transient suppression with typical response time under 1.0 ps. Its bidirectional structure enables symmetrical clamping in both polarities, eliminating need for polarity-aware placement in AC-coupled or floating bus applications.
It meets ISO 7637-2 test requirements for automotive electrical systems (Pulse 1, 2a, 2b, 3a, 3b) and supports steady-state power dissipation up to 3 W at 25°C ambient, with thermal resistance of 10°C/W junction-to-case and 55°C/W junction-to-ambient - critical for board-level thermal design in compact power converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 97.2 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC bias margin. |
| VBR (min/max) | 108 V / 132 V at 1 mA - Breakdown threshold range; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | 173 V at 3.6 A (10/1000 µs) - Clamped voltage during worst-case surge; determines protected circuit's maximum stress level. |
| PPPSM | 600 W - Peak pulse power handling per single transient; defines survivability against high-energy ESD or load dump events. |
| IR @ VWM | <1 µA - Reverse leakage at standoff voltage; ensures minimal quiescent power loss and signal integrity in high-impedance nodes. |
| TJ max | +150°C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial environments. |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band (bidirectional symmetry means no functional polarity marking required for P6SMB120C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; connects across protected line and ground or between differential lines without orientation constraint. |
| Case / Body | Thermal interface | Non-electrical; provides mechanical mounting and contributes to thermal dissipation via PCB copper area under device footprint. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche behavior and long-term reliability under repeated surge stress without parameter drift. |
| ISO 7637-2 compliance | Validated for automotive transient immunity (Pulse 1/2a/2b/3a/3b); eliminates need for additional external filtering in 12 V/24 V vehicle ECUs. |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; supports standard SMT assembly without special handling or dry pack logistics. |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives; suitable for consumer, industrial, and automotive supply chains with strict material compliance mandates. |
Applications
| Switching Mode Power Supply (SMPS) | Automotive Electronics |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier outputs against turn-off spikes and line surges. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across input bulk capacitor or output rail to clamp energy from inductive kickback or lightning-induced coupling. Use Value: Limits voltage overshoot to ≤173 V during 10/1000 µs transients, preventing damage to 200 V-rated MOSFETs and ensuring >100,000 surge cycles per MIL-STD-883H Method 3015.7. | Use Scenario: Load-dump and jump-start protection in body control modules (BCMs), infotainment head units, and ADAS camera power inputs. IC Role / Device Role / Timing Role: Bidirectional clamping element on 12 V battery rail to absorb ISO 7637-2 Pulse 5a (load dump) up to 60 V superimposed on 14 V nominal. Use Value: Withstands 600 W peak pulse without degradation, maintaining <1 µA leakage at 97.2 V to avoid battery drain in always-on modules. |
| Industrial Motor Drives | Consumer Display Power Supplies |
Use Scenario: Snubbing voltage spikes generated by IGBT switching in HVAC inverter stages and servo amplifier outputs. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC bus to clamp commutation spikes before they propagate to upstream capacitors or controllers. Use Value: 173 V clamping voltage ensures protected IGBTs rated for 600 V remain within 30% of their VCEO limit during worst-case 10/1000 µs transients. | Use Scenario: Overvoltage protection on 19 V adapter input rails in LCD/LED monitors and all-in-one PCs exposed to mains-borne surges. IC Role / Device Role / Timing Role: First-line defense against EN 61000-4-5 Level 3 (1 kV line-earth) surges entering via AC/DC adapter interface. Use Value: Fast <1.0 ps response captures sub-nanosecond edge transients, while DO-214AA footprint allows placement directly at connector entry point with minimal trace inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Same DO-214AA package, identical 120 V nominal, but rated for 600 W with slightly higher VC = 176 V at 3.6 A. | Marginally lower clamping ratio (VC/VBRmin = 1.63 vs. 1.60), resulting in ~3 V higher stress on downstream components. | Select when SMBJ-series qualification history is required or when minor clamping voltage increase is acceptable for legacy design reuse. |
| 1.5KE120CA | Through-hole DO-15 package, same 120 V rating and 600 W rating, but larger footprint and higher thermal resistance (RθJA ≈ 65°C/W). | Not suitable for high-density SMT layouts; requires manual or wave soldering; less robust in vibration-prone environments. | Choose only for prototyping, repair, or legacy through-hole designs where rework flexibility outweighs board space and reliability constraints. |
Compared with SMBJ120CA and 1.5KE120CA, the P6SMB120C offers optimal balance of low-profile SMT integration, industry-standard ISO 7637-2 validation, and tightest clamping voltage (173 V), making it preferred for space-constrained automotive and industrial power modules requiring repeatable surge immunity without layout redesign.
Availability
P6SMB120C is available at Aetrix Electronics and suitable for switching mode power supplies, automotive electronics, and industrial motor drives requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB120C 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power ICs for industrial and automotive markets.
The P6SMB series was developed specifically for high-reliability, surface-mount transient suppression in harsh environments - emphasizing ISO 7637-2 compliance, moisture-insensitive packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What does the 'C' suffix indicate in P6SMB120C?
The 'C' suffix in P6SMB120C denotes bidirectional configuration, meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., P6SMB120A), the P6SMB120C has no polarity-dependent cathode marking and functions identically regardless of terminal orientation - essential for AC-coupled or floating bus protection where voltage polarity reverses.
Is P6SMB120C compliant with automotive transient standards?
Yes, P6SMB120C is explicitly validated to meet ISO 7637-2 for automotive electrical disturbances, covering Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a (capacitive coupled noise), and Pulse 3b (inductively coupled noise). This makes P6SMB120C suitable for direct integration into 12 V and 24 V vehicle subsystems without additional transient filtering stages.
What is the maximum clamping voltage of P6SMB120C under surge conditions?
The maximum clamping voltage of P6SMB120C is 173 V when subjected to a 10/1000 µs waveform peak pulse current of 3.6 A. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events - a critical parameter for ensuring protected components remain within their absolute maximum ratings.
Does P6SMB120C require moisture-sensitive handling before reflow?
No, P6SMB120C is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ambient conditions (≤30°C / 60% RH) without baking or dry-pack requirements. This simplifies manufacturing logistics and eliminates risk of popcorning during standard lead-free reflow profiles, supporting high-yield automated assembly.
How does P6SMB120C compare to P6SMB120A in terms of electrical performance?
P6SMB120A is unidirectional with a cathode band and VBR range of 114–126 V, while P6SMB120C is bidirectional with VBR range of 108–132 V and identical 173 V clamping voltage. The P6SMB120C's wider breakdown tolerance accommodates bidirectional symmetry but maintains the same surge robustness - making it the correct choice for AC or polarity-agnostic protection where P6SMB120A would fail to conduct in reverse polarity events.
P6SMB120C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 97.2V
- Voltage - Breakdown (Min):
- 108V
- Voltage - Clamping (Max) @ Ipp:
- 173V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB120C FAQ
1.How can I place an order for P6SMB120C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB120C 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 P6SMB120C reliable?
The price and inventory of P6SMB120C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB120C is usually 5 days.
3.What payment methods are accepted for P6SMB120C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB120C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB120C?
P6SMB120C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB120C 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 P6SMB120C?
For technical support, including P6SMB120C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB120C requirements.
6.How does Aetrix verify that P6SMB120C is sourced from the original manufacturer or authorized distributors?
All P6SMB120C 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 P6SMB120C meets industry standards.
7.What is the process for return or replacement of P6SMB120C?
All P6SMB120C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB120C, 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 P6SMB120C part is unused and in its original packaging.
Return procedure for P6SMB120C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB120C Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
