My Inquiry
My Account
Taiwan Semiconductor Corporation SMCJ7.5CH
- Part No.:
- SMCJ7.5CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ7.5CH.pdf
- Description:
- 1500W, 9.3V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,843
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ7.5CH from Taiwan Semiconductor is a bidirectional 1500W surface-mount transient voltage suppressor (TVS) in DO-214AB (SMC) package, with 7.5V working stand-off voltage, 8.33–10.30V breakdown voltage at 1mA, and 14.3V maximum clamping voltage at 100A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients and ESD.
For engineers reviewing the SMCJ7.5CH datasheet, SMCJ7.5CH pinout, SMCJ7.5CH application, or SMCJ7.5CH equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, bidirectional clamping behavior, thermal resistance values, and direct alternatives for automotive-grade surge protection design.
Technical Context
The SMCJ7.5CH is a glass-passivated, unidirectional/bidirectional TVS diode configured as a single die in DO-214AB package. Its junction-to-case thermal resistance is 10°C/W and junction-to-ambient is 55°C/W, enabling reliable 1500W peak pulse power dissipation under 1ms pulses per Fig.5 waveform.
It meets AEC-Q101 stress requirements and ISO 7637-2 immunity standards for automotive electronics. Bidirectional operation is enabled by the "CH" suffix, meaning electrical characteristics apply identically in both directions - confirmed by manufacturer's note stating "Electrical characteristics apply in both directions" for CH/CAH-suffix devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit DC bias. |
| VBR min/max | 8.33 V / 10.30 V @ 1 mA - Breakdown threshold range; ensures reliable turn-on during transients without false triggering. |
| VC @ IPPM | 14.3 V @ 100 A - Clamped voltage during worst-case 100A surge; defines maximum overvoltage seen by downstream ICs. |
| PPK | 1500 W - Peak pulse power rating for 1ms 10/1000μs waveform; determines survivability against high-energy load dump events. |
| IR @ VWM | <1 μA - Reverse leakage at 7.5V; negligible power loss and signal integrity impact in standby. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive placement with adequate PCB copper area. |
| RθJA / RθJC | 55 / 10 °C/W - Thermal resistances confirm need for thermal relief pads and define safe power derating above 25°C ambient. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, polarity marked by cathode band (bidirectional function renders polarity irrelevant in practice).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals behave identically; no fixed anode/cathode assignment - enables placement without orientation check. |
| Case (body) | Thermal and mechanical interface | DO-214AB body provides primary heat path to PCB copper; requires ≥25 mm² thermal pad for full 1500W rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity, and mechanical shock - eliminates requalification effort for Tier 1 designs. |
| ISO 7637-2 compliance | Guaranteed immunity to Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - meets OEM EMC requirements out-of-box. |
| Fast response time <1.0 ps | Clamps within picoseconds of transient onset - prevents sub-nanosecond ESD spikes from reaching sensitive CAN/LIN transceivers or microcontrollers. |
| Glass passivated junction | Enables stable VBR over lifetime and humidity exposure - critical for 15+ year automotive service life without parameter drift. |
| Moisture sensitivity level 1 | No bake requirement before reflow - compatible with standard SMT lines without process modification or dry pack handling. |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump (up to 60V) and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of LDOs and MCU power inputs to limit voltage excursion to ≤14.3V. Use Value: Prevents latch-up or permanent damage to 16-bit MCUs and CAN transceivers during ISO 7637-2 Pulse 5a events. | Use Scenario: 24V digital input module in factory automation system subject to inductive kickback from solenoid switching. IC Role / Device Role / Timing Role: Bidirectional TVS across input terminals to shunt reverse- and forward-polarity transients into common ground. Use Value: Eliminates need for dual unidirectional devices - reduces BOM count and PCB area while maintaining symmetrical clamping performance. |
| Telecom Surge Interface | Consumer USB-C Port ESD Hardening |
Use Scenario: Ethernet PHY power supply rail in outdoor telecom node subjected to lightning-induced surges on PoE lines. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), clamping residual energy below IC absolute maximum ratings. Use Value: Achieves <100 ns total response with GDT+SMCJ7.5CH cascade - meets IEC 61000-4-5 Level 4 (4kV) requirements. | Use Scenario: VBUS line in USB-C receptacle where hot-plug events generate ±15kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp between VBUS and chassis ground to divert ESD current away from USB controller. Use Value: Sub-1ps response ensures clamping occurs before ESD pulse edge reaches silicon - validated to pass ±15kV contact/±20kV air discharge tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA | 600W peak power, SMA package (smaller footprint, higher RθJA = 95°C/W), same VWM/VBR/VC specs | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current load dump | Select when space-constrained and surge energy ≤600W; verify thermal margin with reduced copper area. |
| SMCJ7.5CA | Identical 1500W rating and DO-214AB package; differs only in marking code and minor VBR tolerance (min 8.33V vs. SMCJ7.5CH's 8.33–10.30V range) | No functional difference; CA suffix denotes same bidirectional configuration and AEC-Q101 qualification | Drop-in alternative with identical electrical and mechanical behavior - suitable for second-source procurement without redesign. |
Compared with SMCJ7.5CH, SMAJ7.5CA offers smaller size but sacrifices 60% peak power handling and thermal robustness, while SMCJ7.5CA matches all key parameters and qualifications - making it a true functional and mechanical replacement for continuity planning.
Availability
SMCJ7.5CH is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC I/O modules, telecom surge interfaces, and consumer USB-C port hardening requiring stable component supply across multi-year production cycles.
Supply support for SMCJ7.5CH 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 automotive-qualified components.
The SMCJ series was designed specifically for AEC-Q101-compliant automotive and industrial transient suppression, emphasizing robust clamping, low leakage, and reliability under harsh thermal and mechanical stress.
FAQ
What does the "CH" suffix mean in SMCJ7.5CH?
The "CH" suffix in SMCJ7.5CH indicates a bidirectional configuration - meaning the device functions identically in both polarities, with symmetric breakdown and clamping characteristics. This is distinct from "H" (unidirectional) and "CAH" (tighter-tolerance bidirectional) variants. The SMCJ7.5CH is explicitly designated for bidirectional use per TSC documentation, and its electrical specs apply in both directions without polarity dependency.
Is SMCJ7.5CH AEC-Q101 qualified?
Yes, SMCJ7.5CH is AEC-Q101 qualified, as confirmed in the official Taiwan Semiconductor datasheet (Version A2102, Page 1). This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock - validating its suitability for automotive under-hood and cabin applications where reliability over 15 years is required.
What is the maximum clamping voltage of SMCJ7.5CH at rated surge current?
The maximum clamping voltage of SMCJ7.5CH is 14.3 V at 100 A peak pulse current (IPPM), measured using the 10/1000 μs waveform defined in Fig.5 of the datasheet. This value represents the worst-case voltage imposed on the protected circuit during a full-rated 1500W transient event, and is guaranteed across temperature and production lot variations.
Can SMCJ7.5CH replace unidirectional SMCJ7.5H in existing designs?
No - SMCJ7.5CH cannot directly replace unidirectional SMCJ7.5H without layout review. Although both share the same VWM (7.5 V), VBR (8.33–10.30 V), and VC (14.3 V), the SMCJ7.5CH lacks polarity marking and conducts equally in both directions. In circuits relying on directional blocking (e.g., DC power rail with reverse-polarity protection), substituting SMCJ7.5CH may cause unintended conduction paths or failure to block reverse voltage.
Does SMCJ7.5CH meet ISO 7637-2 for automotive transient immunity?
Yes, SMCJ7.5CH meets ISO 7637-2 requirements for Pulses 1, 2a, 2b, 3a, and 3b, as explicitly stated in the Taiwan Semiconductor datasheet (Page 1, FEATURES section). Its 1500W peak power rating, fast <1.0 ps response, and low clamping voltage enable compliance with these standardized automotive transient waveforms without additional external components.
SMCJ7.5CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 110A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ7.5CH FAQ
1.How can I place an order for SMCJ7.5CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ7.5CH 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 SMCJ7.5CH reliable?
The price and inventory of SMCJ7.5CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ7.5CH is usually 5 days.
3.What payment methods are accepted for SMCJ7.5CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ7.5CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ7.5CH?
SMCJ7.5CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ7.5CH 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 SMCJ7.5CH?
For technical support, including SMCJ7.5CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ7.5CH requirements.
6.How does Aetrix verify that SMCJ7.5CH is sourced from the original manufacturer or authorized distributors?
All SMCJ7.5CH 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 SMCJ7.5CH meets industry standards.
7.What is the process for return or replacement of SMCJ7.5CH?
All SMCJ7.5CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ7.5CH, 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 SMCJ7.5CH part is unused and in its original packaging.
Return procedure for SMCJ7.5CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ7.5CH 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…
