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Taiwan Semiconductor Corporation SMCJ58H
- Part No.:
- SMCJ58H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58H.pdf
- Description:
- 1500W, 71.6V, 10%, UNIDIRECTIONA
- Quantity:
- Payment:
- Shipping:
Inventory:8,391
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Product details
Overview
SMCJ58H from Taiwan Semiconductor is a unidirectional 1500W surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 58V working stand-off voltage (VWM), 64.4–78.7V breakdown voltage (VBR), and 103V maximum clamping voltage (VC) at 15A peak pulse current - designed for automotive-grade ESD and load-switching surge protection in power supply rails and I/O lines.
For engineers reviewing the SMCJ58H datasheet, SMCJ58H pinout, SMCJ58H application, or SMCJ58H equivalent, this device delivers AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, <1µA leakage above 10V, and robust thermal performance (RθJA = 55°C/W) - critical for high-reliability 12V/24V automotive and industrial control systems.
Technical Context
The SMCJ58H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve fast transient suppression with minimal capacitance. Its clamping behavior follows the 10/1000μs standard waveform per R.E.A., delivering precise overvoltage limiting without parasitic turn-on during normal operation.
Designed for single-die configuration in DO-214AB, it supports automated placement and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity. Thermal derating begins above 25°C ambient, with junction temperature rated from –55°C to +150°C and steady-state power dissipation of 5W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC rail margin for 12V/24V systems. |
| VBR min/max | 64.4 V / 78.7 V @ 1 mA - Breakdown threshold range ensures reliable triggering across process variation and temperature. |
| VC @ IPPM | 103 V @ 15 A - Clamped voltage under 10/1000μs surge; limits downstream IC stress to safe levels during load dump events. |
| PPK | 1500 W - Peak pulse power rating at TA = 25°C; supports high-energy transients like ISO 7637-2 Pulse 5a (load dump). |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves battery life and signal integrity in always-on circuits. |
| RθJA | 55 °C/W - Junction-to-ambient thermal resistance; enables thermal design with standard PCB copper area in automotive ECUs. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads, UL 94V-0 molding compound, 0.210g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; forms clamping path when cathode exceeds VWM. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) waveforms - essential for vehicle ECU immunity. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime; eliminates risk of metallization corrosion in humid environments. |
| Sub-1 ps response time | Enables protection of high-speed interfaces (e.g., CAN FD, LIN) by clamping before transient energy couples into sensitive logic. |
| J-STD-020 Level 1 MSL | Allows unlimited floor life and reflow compatibility without baking - simplifies SMT manufacturing flow. |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting 12V/24V power inputs in body control modules (BCM) and lighting ECUs against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients exceeding 58V. Use Value: Limits clamped voltage to 103V, preventing damage to 36V-rated DC-DC converters and microcontrollers in harsh automotive environments. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to inductive switching noise from solenoids and relays. IC Role / Device Role / Timing Role: Standoff protector on 24V dry-contact inputs, absorbing repetitive 10/1000μs transients up to 1500W peak. Use Value: Maintains <1µA leakage at 24V, ensuring clean logic thresholds while surviving >100,000 surge cycles per IEC 61000-4-5. |
| Telecom Power Supply Rails | Consumer Appliance Motor Drivers |
|
Use Scenario: Secondary-side overvoltage protection on 48V telecom rectifier outputs feeding PoE injectors and baseband processors. IC Role / Device Role / Timing Role: Fast-clamping TVS on DC output bus, triggered only during lightning-induced surges or hot-swap transients. Use Value: Achieves 103V clamping at 15A with 55°C/W thermal resistance, enabling compact heatsink-free layout in space-constrained telecom modules. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Bidirectional-capable variant not required; unidirectional SMCJ58H placed across motor terminals with polarity aligned to DC bus. Use Value: Withstands 200A non-repetitive forward surge (IFSM), protecting H-bridge MOSFETs from destructive inductive kickback during PWM commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | Lower PPK (600W), SMB package (smaller footprint, higher RθJA = 85°C/W), same VWM/VBR range. | Suitable for lower-energy transients (e.g., ESD-only) or space-constrained consumer boards where 1500W rating is unnecessary. | Select SMBJ58A only if system-level testing confirms 600W surge capability suffices and thermal margin permits higher junction temperature rise. |
| 1.5KE56A | Through-hole DO-201 package, 1500W rating, but slower response (>1ns), higher leakage (5µA), no AEC-Q101 or ISO 7637-2 validation. | Acceptable for cost-sensitive industrial AC/DC supplies where automotive qualification and fast response are not required. | Choose 1.5KE56A only for non-automotive, non-automated assembly contexts where leaded mounting and legacy qualification are acceptable. |
Compared with SMBJ58A and 1.5KE56A, the SMCJ58H uniquely combines AEC-Q101 qualification, ISO 7637-2 compliance, sub-1ps response, and surface-mount DO-214AB packaging - making it the only option validated for automotive power rail protection requiring both high energy handling and fast transient immunity.
Availability
SMCJ58H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom power systems, and consumer appliance motor drives requiring stable component supply across long production lifecycles.
Supply support for SMCJ58H 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 since 1992.
The SMCJ58H belongs to TSC's AEC-Q101-qualified SMCJ-H series of high-power TVS diodes, engineered specifically for automotive and industrial surge immunity where reliability under ISO 7637-2 and thermal stability across –55°C to +150°C are mandatory.
FAQ
What is the clamping voltage of SMCJ58H at its rated peak pulse current?
The SMCJ58H has a maximum clamping voltage (VC) of 103 V at 15 A peak pulse current (IPPM), measured under the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across temperature and process variation, ensuring predictable overvoltage limiting for downstream 36V-rated ICs in automotive power rails. The SMCJ58H achieves this clamping performance while maintaining <1 µA leakage at its 58 V working stand-off voltage.
Is SMCJ58H suitable for bidirectional transient protection?
No, the SMCJ58H is a unidirectional TVS diode intended for DC rail protection with defined polarity (cathode to line, anode to ground). For bidirectional applications such as AC lines or data buses, the SMCJ58AH variant - which uses a symmetrical bipolar structure - must be selected instead. The SMCJ58H lacks reverse-direction breakdown capability and will conduct continuously if reverse-biased beyond its 58 V VWM, potentially causing failure.
Does SMCJ58H meet automotive qualification standards?
Yes, the SMCJ58H is AEC-Q101 qualified and explicitly validated for automotive use, including full compliance with ISO 7637-2 test pulses (Pulse 1, 2a, 2b, 3a, 3b). It also meets JESD201 Class 2 whisker resistance, J-STD-020 Level 1 moisture sensitivity, and RoHS/halogen-free requirements - confirming suitability for under-hood and cabin ECU deployments where long-term reliability under thermal and mechanical stress is critical.
What is the thermal resistance of SMCJ58H, and how does it affect PCB layout?
The SMCJ58H has a junction-to-ambient thermal resistance (RθJA) of 55°C/W under standard JEDEC conditions. This means that with 1500W peak power dissipation, short-duration pulses do not cause thermal runaway, but sustained surge repetition requires adequate copper pour (≥1 in² per side) and thermal vias to maintain junction temperature below 150°C. Layout must avoid narrow traces on cathode/anode pads to minimize resistive heating during high IPPM events.
How does the SMCJ58H compare to SMCJ58AH in terms of electrical performance?
The SMCJ58AH differs from the SMCJ58H in having tighter VBR tolerance (64.4–71.2 V vs. 64.4–78.7 V), lower clamping voltage (93.6 V vs. 103 V at 16 A), and bipolar functionality. While both share the same 58 V VWM and DO-214AB package, the SMCJ58AH is optimized for lower clamping energy and bidirectional surge paths - making it preferable for symmetric signal-line protection, whereas the SMCJ58H is optimized for cost-effective unidirectional DC rail clamping with higher surge margin.
SMCJ58H 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ58H FAQ
1.How can I place an order for SMCJ58H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58H 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 SMCJ58H reliable?
The price and inventory of SMCJ58H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58H is usually 5 days.
3.What payment methods are accepted for SMCJ58H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58H?
SMCJ58H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58H 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 SMCJ58H?
For technical support, including SMCJ58H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58H requirements.
6.How does Aetrix verify that SMCJ58H is sourced from the original manufacturer or authorized distributors?
All SMCJ58H 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 SMCJ58H meets industry standards.
7.What is the process for return or replacement of SMCJ58H?
All SMCJ58H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58H, 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 SMCJ58H part is unused and in its original packaging.
Return procedure for SMCJ58H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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