Product Details
Place of Origin: Guangdong,China
Brand Name: LINK-PP
Certification: UL,RoHS,Reach,ISO
Model Number: SM91502AL
Payment & Shipping Terms
Minimum Order Quantity: 400/2000/10K/25K
Price: $0.06-$3.2
Packaging Details: T&R
Delivery Time: Stock
Payment Terms: TT,NET30/60/90 Days
Supply Ability: 3KK/Month
Part NUmber: |
SM91502AL |
Turns Ratio: |
1:1 ±2 % |
OCL (100 KHz, 0.1 V): |
150 µH Min. To 450 µH Max. |
Working Voltage: |
1000 VDC |
Hi-Pot (Isolation): |
4300 VDC (1 MA, 60 Sec.) |
Operating Temperature: |
-40 °C To +125 °C |
Part NUmber: |
SM91502AL |
Turns Ratio: |
1:1 ±2 % |
OCL (100 KHz, 0.1 V): |
150 µH Min. To 450 µH Max. |
Working Voltage: |
1000 VDC |
Hi-Pot (Isolation): |
4300 VDC (1 MA, 60 Sec.) |
Operating Temperature: |
-40 °C To +125 °C |
The Bourns SM91502AL is a single-channel Battery Management System (BMS) isolation transformer module featuring an integrated common mode choke for superior noise suppression. Specifically engineered for the high-safety requirements of Electric Vehicles (EV) and Energy Storage Systems (ESS), the SM91502AL supports serial daisy chain/isoSPI™ communication. With a 1000 VDC working voltage and AEC-Q200 compliance, it ensures robust signal integrity and galvanic isolation in the most demanding environments.
The SM91502AL stands out as a practical choice for BMS communication isolation because it combines electrical performance with production-ready reliability. Its specifications make it suitable for systems requiring dependable signal coupling and strong isolation characteristics.
| Parameter | Specification |
|---|---|
| Open Circuit Inductance (OCL) | 150 µH min. / 450 µH max. |
| Test Condition for OCL | 100 kHz, 0.1 V, -40 °C to +125 °C |
| Leakage Inductance | 0.5 µH max. |
| Leakage Inductance Test Condition | 100 kHz, 0.1 V |
| DCR - Transformer Side | 0.45 Ω max. |
| DCR - CM Choke Side | 0.85 Ω max. |
| Turns Ratio | 1:1 ±2% |
| Insertion Loss | -0.25 dB max. @ 4 MHz |
| Return Loss (Z out = 100 ohms) | -22 dB min. @ 4 MHz |
| Common Mode Rejection Ratio | -35 dB min. @ 1–100 MHz |
| Common Mode Rejection Ratio | -28 dB min. @ 100–200 MHz |
| Hi-Pot (1 mA, 60 sec.) | 4300 VDC |
| Working Voltage | 1000 VDC |
| Parameter | Specification |
|---|---|
| Functional Insulation | Yes |
| Operating Temperature Range | -40 °C to +125 °C |
| Storage Temperature Range | -25 °C to +85 °C |
| Moisture Sensitivity Level | 1 |
| ESD Classification (HBM) | N/A |
| Packaging | Tape & Reel |
| Reel Quantity | 800 pcs. / 13-inch reel |
| Termination | Cu/Ni/Sn |
| Compliance | RoHS compliant |
The SM91502AL BMS Transformer is well suited for designs that require isolation and stable communication inside battery monitoring networks. Common applications include:
In a Battery Management System, signal integrity and safety are non-negotiable. The SM91502AL stands out by offering functional insulation and a wide operating temperature range (-40 °C to +125 °C), making it suitable for under-the-hood automotive environments. Its low leakage inductance (0.5 µH max) ensures high-speed data accuracy, while the high CMRR protects your system from common-mode noise generated by high-power inverters.
The SM91502AL is a BMS transformer used in battery management system communication and isolation circuits, especially in IsoSPI and serial daisy chain designs.
Yes. The SM91502AL is AEC-Q200 compliant, making it suitable for automotive-grade applications.
The working voltage is 1000 VDC.
The hi-pot rating is 4300 VDC for 60 seconds at 1 mA.
It supports reference designs with Analog Devices LTC6804-1 / LTC6811 and MC33771 / MC33772.
