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Taiwan Semiconductor Corporation SMCJ58CH
- Part No.:
- SMCJ58CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58CH.pdf
- Description:
- 1500W, 71.6V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,616
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Product details
Overview
SMCJ58CH from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, designed for robust ESD and surge protection in automotive and industrial power rails. It features a 58V working stand-off voltage (VWM), 64.4–78.7V breakdown voltage (VBR), 103V maximum clamping voltage (VC) at 15A peak impulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ58CH datasheet, SMCJ58CH pinout, SMCJ58CH application, or SMCJ58CH equivalent, this device is selected for high-energy transient suppression in 12V/24V vehicle subsystems, DC power input stages, and industrial I/O interfaces where fast response (<1.0 ps), low leakage (<1 µA @ 58V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The SMCJ58CH employs a glass-passivated silicon junction optimized for unidirectional transient suppression. Its clamping behavior is defined by a 10/1000 µs waveform per REA standards, with thermal performance characterized by RθJC = 10°C/W and RθJA = 55°C/W - enabling reliable operation up to TJ = +150°C under pulsed conditions.
It meets ISO 7637-2 for automotive load-dump and switching transients and supports bidirectional variants via CH suffix (e.g., SMCJ58CH denotes unidirectional; SMCJ58CAH would be bidirectional). Polarity is marked by cathode band; VF = 3.5 V @ 100 A applies only to SMCJ5.0H–SMCJ90H devices - confirmed for SMCJ58CH per datasheet Note 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping initiates; sets system-level overvoltage threshold for 12V/24V rail protection. |
| VBR min/max | 64.4 V / 78.7 V @ IT = 1 mA - Confirmed breakdown range ensures predictable turn-on margin above VWM for noise immunity. |
| VC @ IPPM | 103 V @ 15 A - Clamping voltage during 10/1000 µs surge defines worst-case voltage seen by downstream ICs. |
| PPK | 1500 W - Peak pulse power rating determines survivability against high-energy transients like ISO 7637-2 Pulse 5a. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves battery life and avoids false triggering in always-on circuits. |
| TJ max | +150 °C - Junction temperature limit enables use in under-hood automotive environments without derating. |
| Package | DO-214AB (SMC) - Surface-mount outline with 0.210 g mass, UL 94V-0 molding, and matte tin-plated leads per J-STD-002. |
Pinout & Package
DO-214AB (SMC) package: Cathode-marked unidirectional TVS diode with two terminals - anode (unmarked end) and cathode (banded end). Designed for automated placement and reflow soldering; polarity critical for correct circuit protection orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; completes clamping loop during transient events. |
| Cathode | High-side protected node | Connected to protected line (e.g., 12V supply); conducts surge current to ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains. |
| Glass passivated junction | Ensures stable VBR over temperature and long-term reliability in humid or thermally cycled environments. |
| Clamping response <1.0 ps | Protects sensitive CAN, LIN, or microcontroller I/O pins before damage-inducing voltage overshoot occurs. |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Guarantees immunity to real-world automotive transients including load dump, alternator ripple, and inductive switch-off. |
| Moisture sensitivity level 1 | Enables standard SMT assembly without baking; compatible with J-STD-020 handling requirements. |
Applications
| Automotive Power Input Protection | Industrial DC Power Rail Clamp |
|---|---|
Use Scenario: Protecting 12V/24V power inputs of infotainment head units, telematics modules, and body control units from load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients exceeding 58V. Use Value: Limits voltage to ≤103V during 15A 10/1000µs pulses, preventing damage to upstream DC-DC converters and PMICs. |
Use Scenario: Safeguarding programmable logic controllers (PLCs), motor drives, and sensor signal conditioners connected to factory floor 24V DC supplies. IC Role / Device Role / Timing Role: Standoff protector on main DC bus to absorb switching-induced spikes from contactors and solenoids. Use Value: Withstands 1500W peak pulses and maintains <1 µA leakage at 58V, ensuring minimal standby power loss and long-term stability. |
| Telecom Interface Surge Suppression | Consumer Electronics Port Protection |
Use Scenario: Shielding RS-485/RS-232 communication ports in base station power supplies and remote I/O modules from lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on differential pair or single-ended line referenced to local ground plane. Use Value: Fast <1.0 ps response captures edge-of-surge energy before it couples into data lines, preserving signal integrity. |
Use Scenario: Hardening USB-C PD input stages, smart home hub power adapters, and battery management systems against ESD and hot-plug transients. IC Role / Device Role / Timing Role: Front-end clamping element on AC/DC output or battery charge path. Use Value: AEC-Q101 qualification and halogen-free construction meet global safety and environmental mandates for consumer OEMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ58A | Same DO-214AC (SMA) package; lower PPK (400W); VBR = 64.4–71.2V; VC = 93.6V @ 12.1A. | Lower surge capacity suits cost-sensitive consumer designs but not automotive load-dump duty cycles. | Select SMAJ58A only if peak pulse energy is ≤400W and AEC-Q101 is not required. |
| ON Semiconductor 1.5KE56A | Through-hole DO-201AE package; PPK = 1500W; VBR = 62.2–68.8V; VC = 93.6V @ 16A; no AEC-Q101. | Not surface-mountable; lacks automotive qualification and ISO 7637-2 validation. | Choose 1.5KE56A only for legacy through-hole boards where rework tolerance outweighs automotive compliance needs. |
Compared with SMAJ58A and 1.5KE56A, the SMCJ58CH delivers higher surge robustness in a compact SMC package, full AEC-Q101 validation, and documented ISO 7637-2 compliance - making it the preferred choice for new automotive and industrial SMT designs requiring guaranteed transient immunity.
Availability
SMCJ58CH is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply, AEC-Q101 assurance, and high-energy transient suppression capability.
Supply support for SMCJ58CH 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 developed specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, ISO 7637-2 conformance, and robust thermal performance in surface-mount packages.
FAQ
What is the polarity configuration of the SMCJ58CH?
The SMCJ58CH is a unidirectional TVS diode with clearly marked cathode band on the DO-214AB (SMC) package. The cathode connects to the protected line (e.g., 12V rail), while the anode connects to ground. This configuration ensures clamping only during positive transients - essential for DC power rail protection where reverse voltage is not expected. Correct orientation is mandatory for SMCJ58CH to function as intended.
Does the SMCJ58CH meet automotive qualification standards?
Yes, the SMCJ58CH is AEC-Q101 qualified and explicitly validated for automotive applications. It meets ISO 7637-2 test pulses 1, 2a, 2b, 3a, and 3b - covering key vehicle electrical disturbance scenarios including load dump, supply interruption, and coupled transients. This certification is documented in Taiwan Semiconductor's official datasheet Version A2102 and confirms suitability for under-hood and cabin ECUs.
What is the maximum clamping voltage of the SMCJ58CH and at what current is it specified?
The SMCJ58CH has a maximum clamping voltage (VC) of 103 V, measured at a peak impulse current (IPPM) of 15 A using the standardized 10/1000 µs waveform per REA and ANSI/IEEE C62.35. This value represents the worst-case voltage imposed on protected circuitry during a high-energy transient - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMCJ58CH differ from the SMCJ58AH variant?
The SMCJ58CH and SMCJ58AH share identical VWM (58 V) and package (DO-214AB), but differ in breakdown voltage range: SMCJ58CH specifies VBR = 64.4–78.7 V, while SMCJ58AH tightens the upper bound to 71.2 V (min 64.4 V). This narrower VBR window improves consistency in clamping onset across production lots, making SMCJ58AH preferable where tighter voltage tolerances are required - though both are valid for general-purpose 58V rail protection.
Is the SMCJ58CH RoHS and halogen-free compliant?
Yes, the SMCJ58CH is fully RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002 for reliable solderability. These material qualifications are confirmed in the official Taiwan Semiconductor datasheet and support global environmental compliance requirements for automotive and industrial OEMs.
SMCJ58CH 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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 15A
- 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)
SMCJ58CH FAQ
1.How can I place an order for SMCJ58CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58CH 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 SMCJ58CH reliable?
The price and inventory of SMCJ58CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58CH is usually 5 days.
3.What payment methods are accepted for SMCJ58CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58CH?
SMCJ58CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58CH 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 SMCJ58CH?
For technical support, including SMCJ58CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58CH requirements.
6.How does Aetrix verify that SMCJ58CH is sourced from the original manufacturer or authorized distributors?
All SMCJ58CH 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 SMCJ58CH meets industry standards.
7.What is the process for return or replacement of SMCJ58CH?
All SMCJ58CH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58CH, 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 SMCJ58CH part is unused and in its original packaging.
Return procedure for SMCJ58CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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