My Inquiry
My Account
Taiwan Semiconductor Corporation SMCJ10CH
- Part No.:
- SMCJ10CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ10CH.pdf
- Description:
- 1500W, 12.4V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,074
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ10CH from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for high-energy surge protection in automotive and industrial power rails. It features a 11.1–13.6 V breakdown voltage (VBR), 10 V working stand-off voltage (VWM), and clamps transients to ≤18.8 V at 83 A peak impulse current (IPPM). Used in 12 V battery-supplied systems to protect CAN/LIN interfaces and microcontroller I/O against ISO 7637-2 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the SMCJ10CH datasheet, SMCJ10CH pinout, SMCJ10CH application, or SMCJ10CH equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, thermal resistance (RθJC = 10 °C/W), and bidirectional variant compatibility (SMCJ10CAH).
Technical Context
The SMCJ10CH employs a glass-passivated silicon junction optimized for fast response (<1.0 ps rise time from 0 V to VBR(min)) and low leakage (<5 µA at 10 V). Its unidirectional configuration provides asymmetric clamping-forward conduction at ~3.5 V (per JESD201 Class 2 whisker-tested matte tin leads) and reverse avalanche clamping up to 18.8 V.
Thermally, it sustains 1500 W peak pulse power (tp = 1 ms) with junction temperature rated from –55 °C to +150 °C and RθJA = 55 °C/W. It meets ISO 7637-2 for automotive load-dump and inductive-switching transients, and complies with RoHS and halogen-free (IEC 61249-2-21) requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; matches standard 12 V automotive nominal rail with margin. |
| VBR(min) / VBR(max) | 11.1 V / 13.6 V - Breakdown occurs within this range at 1 mA test current; ensures reliable turn-on before system damage. |
| VC@IPPM | 18.8 V - Clamped voltage at 83 A peak surge (10/1000 µs waveform); defines worst-case overvoltage seen by protected ICs. |
| IPPM | 83 A - Peak impulse current capability; supports robust immunity to ISO 7637-2 Pulse 5a (load dump) events. |
| PPK | 1500 W - Peak pulse power rating at TA = 25 °C; derates linearly above 25 °C per Fig.2. |
| RθJC | 10 °C/W - Junction-to-case thermal resistance; enables effective heat transfer to PCB copper when mounted with adequate thermal pad. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, single-die unidirectional TVS. Cathode indicated by molded band; polarity critical for correct circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in reverse-biased protection configuration | Connected to ground or low-impedance return path; carries full surge current during clamping. |
| Cathode | High-side connection to protected line (e.g., 12 V rail) | Marked with band; reverse-biased during normal operation; avalanches into conduction when VIN exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, HTRB, and ESD stress per AEC standard. |
| Glass-passivated junction | Enhances long-term reliability and moisture resistance vs. epoxy-passivated alternatives; supports MSL Level 1 handling. |
| Clamping ratio (VC/VBR(min)) | 1.69 - Low ratio indicates efficient energy diversion; reduces stress on downstream components versus higher-ratio TVS devices. |
| ISO 7637-2 compliance | Tested against Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (line impedance transients); no external filtering required. |
| Fast response time | <1.0 ps - Enables protection of high-speed digital interfaces (e.g., CAN FD) without signal distortion or timing skew. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protecting 12 V supply inputs and LIN bus lines in BCMs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach MCU power pins and LIN transceivers. Use Value: Limits transient overvoltage to ≤18.8 V, preventing latch-up or permanent damage to 5 V/3.3 V logic supplies derived from the 12 V rail. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers subjected to field-wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff device across input terminals to shunt surge energy away from optocoupler input stages and series current-limiting resistors. Use Value: Withstands 83 A peak current without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 4 testing. |
| Telecom Power Supply Front-End | EV Onboard Charger (OBC) Auxiliary Rail |
Use Scenario: Secondary-side surge suppression on +5 V/+3.3 V bias rails feeding Ethernet PHYs and management MCUs in telecom rectifiers. IC Role / Device Role / Timing Role: Low-leakage (≤5 µA @ 10 V) TVS placed after DC/DC converter output to prevent false resets during ESD events. Use Value: Maintains system uptime by clamping ESD-induced spikes within 1 ps-faster than typical MCU reset timeout windows. |
Use Scenario: Protecting isolated 12 V auxiliary supply feeding gate drivers and communication ICs in EV onboard chargers. IC Role / Device Role / Timing Role: Bidirectional-capable variant (SMCJ10CAH) used where reverse polarity risk exists during service or miswiring. Use Value: Dual-direction clamping (±18.8 V) eliminates need for separate polarity-reversal protection diodes, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | 600 W peak power, SMB package (smaller footprint, higher RθJA = 75 °C/W), same VWM/VBR range | Suitable for space-constrained consumer electronics; not rated for AEC-Q101 or ISO 7637-2 | Select when board area is limited and automotive qualification is unnecessary. |
| SMCJ10AH | Tighter VBR tolerance (11.1–12.3 V vs. 11.1–13.6 V), identical package and clamping (17.0 V @ 92 A) | Preferred where tighter voltage control improves margin for low-voltage tolerant receivers (e.g., 3.3 V CAN transceivers) | Choose for enhanced consistency in production batches requiring narrow VBR spread. |
Compared with SMBJ10A, SMCJ10CH offers 2.5× higher surge power handling and automotive qualification; compared with SMCJ10AH, it trades tighter VBR control for broader manufacturing tolerance-making it more cost-effective for non-critical 12 V rail protection.
Availability
SMCJ10CH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and telecom power supply front-ends requiring stable component supply across multi-year production cycles.
Supply support for SMCJ10CH 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, and MOSFETs for automotive and industrial markets.
The SMCJ series was developed specifically for AEC-Q101-compliant, high-power transient suppression in harsh automotive environments-emphasizing robustness, repeatable clamping, and ISO 7637-2 compliance without external circuitry.
FAQ
What is the maximum clamping voltage of the SMCJ10CH under a 10/1000 µs surge?
The SMCJ10CH clamps to a maximum of 18.8 V when subjected to its rated 83 A peak impulse current (IPPM) using the standardized 10/1000 µs double-exponential waveform. This value is measured at TA = 25 °C and represents the worst-case overvoltage imposed on protected circuitry during surge events. The SMCJ10CH maintains this clamping performance across its full operating temperature range, making it suitable for under-hood automotive applications where ambient temperatures exceed 100 °C.
Is the SMCJ10CH AEC-Q101 qualified and what tests does that include?
Yes, the SMCJ10CH is AEC-Q101 qualified per Version A2102 documentation from Taiwan Semiconductor. Qualification includes stress tests such as high-temperature reverse bias (HTRB), temperature cycling (TC), highly accelerated stress test (HAST), and electrostatic discharge (ESD) per human-body model (HBM) and machine model (MM). These tests validate reliability for automotive underhood use, including exposure to thermal shock, humidity, and repeated surge events. The SMCJ10CH datasheet explicitly states AEC-Q101 qualification-no inference or cross-reference is required.
How does the SMCJ10CH differ from the SMCJ10AH variant?
The SMCJ10CH has a wider breakdown voltage range (11.1–13.6 V) compared to the SMCJ10AH (11.1–12.3 V), reflecting looser manufacturing tolerance. Both share identical package (DO-214AB), clamping voltage (18.8 V vs. 17.0 V), and peak current rating (83 A vs. 92 A). The SMCJ10CH is optimized for cost-sensitive applications where absolute VBR consistency is secondary to surge robustness; the SMCJ10AH suits designs requiring tighter voltage control for precise threshold alignment with downstream ICs.
Can the SMCJ10CH be used in bidirectional configurations?
No-the SMCJ10CH is unidirectional only. For bidirectional protection, the SMCJ10CAH variant must be used; it features symmetrical clamping in both polarities (±18.2 V at ±92 A) and identical package and thermal specs. Using the SMCJ10CH in reverse-biased mode beyond its specified VWM risks permanent junction damage due to lack of reverse avalanche design. The cathode band marking on the SMCJ10CH confirms its unidirectional orientation and must be observed during layout.
What is the thermal resistance and how does it impact PCB layout for the SMCJ10CH?
The SMCJ10CH has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient (RθJA) of 55 °C/W. To maintain safe operation during repetitive surges, the PCB must provide low-thermal-resistance paths from the cathode/anode pads to internal or external copper planes. Recommended layout includes ≥25 mm² of 2-oz copper per terminal, thermal vias under pads, and avoidance of narrow traces. Without adequate copper, junction temperature may exceed 150 °C during sustained 1500 W pulses-even with short duration-leading to parametric shift or failure.
SMCJ10CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 18.8V
- Current - Peak Pulse (10/1000µs):
- 83A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ10CH FAQ
1.How can I place an order for SMCJ10CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ10CH 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 SMCJ10CH reliable?
The price and inventory of SMCJ10CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ10CH is usually 5 days.
3.What payment methods are accepted for SMCJ10CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ10CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ10CH?
SMCJ10CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ10CH 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 SMCJ10CH?
For technical support, including SMCJ10CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ10CH requirements.
6.How does Aetrix verify that SMCJ10CH is sourced from the original manufacturer or authorized distributors?
All SMCJ10CH 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 SMCJ10CH meets industry standards.
7.What is the process for return or replacement of SMCJ10CH?
All SMCJ10CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ10CH, 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 SMCJ10CH part is unused and in its original packaging.
Return procedure for SMCJ10CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ10CH 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…
