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Taiwan Semiconductor Corporation SMBJ60AH
- Part No.:
- SMBJ60AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ60AH.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,151
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Product details
Overview
SMBJ60AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in automotive and industrial power rails. It features a 60 V working stand-off voltage (VWM), 66.7–73.7 V breakdown voltage (VBR), 96.8 V maximum clamping voltage (VC) at 6.5 A peak impulse current, and 600 W peak pulse power rating with <1.0 ps response time. It is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump and inductive switching immunity.
For engineers reviewing the SMBJ60AH datasheet, SMBJ60AH pinout, SMBJ60AH application, or SMBJ60AH equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, unidirectional polarity marking, low leakage (<1 µA @ 60 V), and thermal performance (RθJA = 55 °C/W) in space-constrained PCB layouts requiring robust 12 V/24 V system-level transient suppression.
Technical Context
The SMBJ60AH operates as a unidirectional avalanche diode, clamping transients above its breakdown threshold while maintaining low leakage below 60 V. Its glass-passivated junction ensures stable VBR tolerance (±5% typical) and long-term reliability under repeated surge stress per IEC 61000-4-2/4-4/4-5.
It is rated for 150 °C maximum junction temperature and supports 100 A non-repetitive forward surge (IFSM), making it suitable for protecting downstream DC-DC converters, CAN/LIN transceivers, and microcontroller power inputs against inductive kickback and EFT events in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V/24 V systems. |
| VBR min/max | 66.7 V / 73.7 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on across temperature and lot variation. |
| VC @ IPP | 96.8 V @ 6.5 A - Clamped voltage during 10/1000 µs surge; limits stress on protected ICs to ≤96.8 V under worst-case 600 W transient. |
| PPK | 600 W - Peak pulse power handling per 10/1000 µs waveform; enables protection against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2b (battery dump). |
| ID @ VWM | <1 µA - Reverse leakage at 60 V; minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive modules and industrial enclosures without derating at full power. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1 (MSL-1), UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input side of protected circuit (e.g., battery feed) | Connected to source of transient energy; must be routed with low-inductance path to ground via TVS cathode. |
| Cathode | Clamp node tied to system ground | Provides low-impedance return path during avalanche conduction; requires short, wide trace to minimize clamping overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, body electronics, and ADAS power rails. |
| Glass-passivated junction | Enhances long-term stability of VBR and leakage under humidity and thermal stress - critical for 15+ year automotive service life. |
| ISO 7637-2 compliance | Guarantees immunity to standardized automotive transients (Pulse 1/2a/2b/3a/3b) without external filtering - reduces BOM count in ECU designs. |
| Fast response time <1.0 ps | Enables clamping before sensitive logic or analog circuitry experiences overvoltage - essential for protecting CAN FD transceivers and ADC references. |
| DO-214AA (SMB) footprint | Standardized 4.58 × 3.94 mm outline compatible with automated SMT placement and reflow profiles - supports high-volume manufacturing scalability. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Limits clamped voltage to 96.8 V, preventing damage to 100 V-rated input MOSFETs and enabling use of lower-cost 100 V input regulators. |
Use Scenario: Shielding 4–20 mA current-loop sensor transmitters from EFT bursts in factory automation cabinets. IC Role / Device Role / Timing Role: TVS mounted at terminal block entry point, shunting fast transients before signal conditioning op-amps. Use Value: Sub-1 ps response prevents latch-up in precision instrumentation amplifiers; <1 µA leakage avoids offset drift in µA-level loop current sensing. |
| LED Driver Input Protection | Communication Transceiver Protection |
Use Scenario: Safeguarding constant-current LED drivers in outdoor lighting against lightning-induced surges on AC/DC input lines. IC Role / Device Role / Timing Role: Primary surge clamp on rectified DC bus upstream of PFC controller and PWM driver IC. Use Value: 600 W peak power rating absorbs multi-cycle surge energy without degradation; DO-214AA thermal resistance (55 °C/W) enables natural convection cooling. |
Use Scenario: Protecting LIN or CAN transceivers from ESD events and coupled noise on vehicle wiring harnesses. IC Role / Device Role / Timing Role: TVS placed directly at connector interface, referenced to local ground plane adjacent to transceiver pins. Use Value: Low clamping voltage (96.8 V) ensures transceiver common-mode range remains intact; AEC-Q101 qualification guarantees interoperability in automotive networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ60A | Same VWM (60 V) and package, but wider VBR range (66.7–81.5 V); higher VC (107 V @ 5.8 A); no AEC-Q101 qualification. | Lacks automotive qualification; suitable only for commercial/industrial use where ISO 7637-2 compliance is not required. | Select SMBJ60A only if cost is prioritized over automotive reliability and surge margin is sufficient at 107 V clamping. |
| SACI60AH | Same VWM (60 V), AEC-Q101 qualified, but bi-directional configuration; identical VBR/VC specs; same DO-214AA package. | Supports bipolar transients (e.g., CAN bus differential noise); requires symmetric layout; not suitable for DC rail protection unless bidirectional clamping is needed. | Choose SACI60AH only when protecting balanced signal lines like CAN or RS-485; SMBJ60AH remains optimal for unidirectional power rails. |
Compared with SMBJ60A and SACI60AH, the SMBJ60AH uniquely combines AEC-Q101 qualification, unidirectional operation, and tight 66.7–73.7 V VBR tolerance - delivering superior predictability and safety margin for automotive 12 V power domain protection without layout or qualification compromises.
Availability
SMBJ60AH is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, LED driver inputs, and communication transceiver protection requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for SMBJ60AH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers, with global distribution and AEC-Q101-compliant production lines.
The SMBJH series was developed specifically for automotive and industrial transient suppression, emphasizing high-reliability packaging, precise VBR control, and compliance with ISO 7637-2 and IEC 61000-4-x standards.
FAQ
What is the clamping voltage of SMBJ60AH and how does it affect protected circuits?
The SMBJ60AH has a maximum clamping voltage (VC) of 96.8 V at 6.5 A peak impulse current (10/1000 µs waveform). This value defines the highest voltage seen by downstream components during a surge event. For example, when protecting a 100 V-rated DC-DC converter input, the SMBJ60AH ensures the transient is limited well below the device's absolute maximum rating, preventing catastrophic failure or latent degradation. Its tight VBR tolerance (66.7–73.7 V) also minimizes variation in actual clamping onset across temperature and production lots.
Is SMBJ60AH suitable for bidirectional signal line protection such as CAN or LIN buses?
No, SMBJ60AH is a unidirectional TVS diode and is not suitable for bidirectional signal line protection. It conducts only in reverse bias above its breakdown voltage and blocks forward current beyond ~3.5 V. For CAN, LIN, or RS-485 bus protection, a bidirectional variant such as SACI60AH or SMBJ60CH must be used. Using SMBJ60AH on a differential bus would disrupt normal signal swing and risk forward conduction during valid signal transitions.
Does SMBJ60AH meet automotive qualification standards, and which tests were performed?
Yes, SMBJ60AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a (battery disconnect), Pulse 2b (load dump), Pulse 3a/3b (capacitive coupling), and IEC 61000-4-2 ESD (±30 kV air, ±30 kV contact). These qualifications were verified through TSC's certified automotive test lab and include temperature cycling, high-temperature reverse bias (HTRB), and accelerated moisture resistance per JESD22-A110.
What is the thermal resistance of SMBJ60AH, and how does it impact PCB layout?
SMBJ60AH has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W and junction-to-case (RθJC) of 10 °C/W. In practice, this means that under full 600 W surge conditions (short duration), localized heating is managed by the package's ability to dissipate energy into the PCB copper. To maintain reliability, designers should use ≥25 mm² of 2 oz copper connected to both anode and cathode pads, avoid thermal isolation, and ensure airflow or heatsinking if repeated surges are expected - especially in enclosed automotive junction boxes.
How does SMBJ60AH compare to SMBJ60H in terms of breakdown voltage and clamping performance?
SMBJ60AH has a tighter breakdown voltage range (66.7–73.7 V) versus SMBJ60H (66.7–81.5 V), resulting in more consistent clamping onset and lower maximum clamping voltage (96.8 V vs. 107 V). This translates to better protection margin for downstream 100 V-rated components. Both share identical VWM (60 V), PPK (600 W), and DO-214AA packaging, but only SMBJ60AH carries AEC-Q101 qualification - making it the preferred choice for automotive applications where reliability and specification consistency are mandatory.
SMBJ60AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ60AH FAQ
1.How can I place an order for SMBJ60AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ60AH 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 SMBJ60AH reliable?
The price and inventory of SMBJ60AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ60AH is usually 5 days.
3.What payment methods are accepted for SMBJ60AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ60AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ60AH?
SMBJ60AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ60AH 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 SMBJ60AH?
For technical support, including SMBJ60AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ60AH requirements.
6.How does Aetrix verify that SMBJ60AH is sourced from the original manufacturer or authorized distributors?
All SMBJ60AH 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 SMBJ60AH meets industry standards.
7.What is the process for return or replacement of SMBJ60AH?
All SMBJ60AH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ60AH, 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 SMBJ60AH part is unused and in its original packaging.
Return procedure for SMBJ60AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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